US Pat. No. 9,131,552

APPARATUS AND METHOD OF OPERATING A LUMINAIRE

Express Imaging Systems, ...

1. A luminaire, comprising:
at least one solid state light source;
at least one photosensitive transducer responsive to at least one physical characteristic indicative of at least one light
condition in an ambient environment;

a real time clock (RTC) that provides RTC signals indicative of a current date and a current time;
a non-transitory processor-readable medium; and
a lamp control subsystem communicatively coupled to the real time clock to receive the RTC signals, communicatively coupled
to the non-transitory processor-readable medium, and communicatively coupled to the photosensitive transducer to receive light
condition signals indicative of the at least one light condition in the ambient environment sensed by the photosensitive transducer,
wherein the lamp control subsystem:

verifies whether at least one aspect of the light condition signals is within a threshold of an expected value for the respective
at least one light condition;

controls a supply of power to the at least one solid state light source responsive at least in part to the light condition
signals if verified;

logically associates the at least one light condition with the current time and the current date in the non-transitory processor-readable
medium if verified;

determines a year-long schedule based at least in part on at least some verified light conditions stored in the non-transitory
processor-readable medium, the year-long schedule variable by date; and

controls a supply of power to the at least one solid state light source according to the determined year-long schedule if
not verified.

US Pat. No. 9,210,751

SOLID STATE LIGHTING, DRIVE CIRCUIT AND METHOD OF DRIVING SAME

Express Imaging Systems, ...

1. A system for solid state lighting, comprising:
a transformer having a primary side and a secondary side, the primary side including at least a first primary inductor, the
secondary side including at least a pair of secondary inductors, each of the secondary inductors having a respective node
that provides current to a respective one of a pair of strings of solid state light sources and not the other one of the pair
of strings of solid state light sources, and the secondary side having a center tap between the pair of secondary inductors
that provides a common ground to each of the pair of strings of solid state light sources; and

a drive circuit electrically coupled to drive the primary side of the transformer.

US Pat. No. 9,360,198

ADJUSTABLE OUTPUT SOLID-STATE LIGHTING DEVICE

EXPRESS IMAGING SYSTEMS, ...

1. A lighting device to provide manually adjustable levels of solid state lighting, the lighting device comprising:
an adjustment component having a user-engageable actuator physically manipulable by a user and accessible by the user from
an exterior of the lighting device to vary an output of the adjustment component; and

a driver circuit electrically coupled to adjust an amount of light output by a number of solid-state light sources in response
to the output of the adjustment component, the driver circuit including:

a feedback circuit which provides a feedback signal responsive to current flowing through the solid-state light sources, the
feedback circuit electrically couples to the adjustment component, and physical manipulation of the user-engageable actuator
of the adjustment component by a user directly affects the feedback signal; and

a controller comprising an input terminal that receives the feedback signal from the feedback circuit, the driver circuit
adjusts the amount of light output by the solid-state light sources based at least in part on the output of the adjustment
component received through the feedback circuit at the input terminal.

US Pat. No. 9,210,759

LUMINAIRE WITH AMBIENT SENSING AND AUTONOMOUS CONTROL CAPABILITIES

Express Imaging Systems, ...

1. An illumination system, comprising:
a luminaire including at least one light source disposed at least partially in a housing;
at least one motion sensor proximate the housing that provides a signal indicative of a velocity of an object which is remote
from the luminaire and external to the luminaire;

a controller communicably coupled to the at least one light source and the at least one motion sensor, the controller includes
defined logic to autonomously operate the at least one light source responsive to the signal indicative of the velocity of
the object provided by the at least one motion sensor; and

a communications transceiver communicably coupled to the controller to communicate with at least one other luminaire;
wherein, responsive to receipt of the signal indicative of the velocity of the object provided by the at least one motion
sensor, the controller selectively autonomously communicates at least one signal via the communications transceiver to at
least one selected recipient luminaire in physical proximity to the luminaire which causes the at least one selected recipient
luminaire to control the illumination thereof based at least in part on the velocity of the object to provide illumination
for the object.

US Pat. No. 9,572,230

CENTRALIZED CONTROL OF AREA LIGHTING HOURS OF ILLUMINATION

EXPRESS IMAGING SYSTEMS, ...

1. A method of operation for a processor-based device to control a plurality of remotely located luminaires, the method comprising:
receiving, by at least one central control processor, illumination data relating to at least one of ambient illumination or
time of day;

generating, at the at least one central control processor, a set of illumination commands based at least in part on the received
illumination data, each one of the illumination commands in the set directed to a different subset of a plurality of luminaires;
and

sequentially distributing each of the illumination commands in the set of illumination commands through a power-line power
distribution system.

US Pat. No. 9,445,485

DETECTION AND CORRECTION OF FAULTY PHOTO CONTROLS IN OUTDOOR LUMINAIRES

Express Imaging Systems, ...

1. A method of operation for a processor-based device to control a plurality of remotely located area lighting luminaires,
each of the area lighting luminaires including a locally installed illumination control system, the method comprising:
receiving, by at least one central control processor, illumination control system fault data that identifies one or more of
the locally installed illumination control systems associated with one or more respective luminaires as a faulty illumination
control system;

receiving, by the at least one central control processor, illumination data relating to at least one of ambient illumination
or time of day;

generating, at the at least one central control processor, an illumination command based at least in part on the received
illumination data; and

distributing the illumination command to the one or more luminaires identified as having a faulty illumination control system
through a data communications network.

US Pat. No. 9,433,062

LUMINAIRE WITH AMBIENT SENSING AND AUTONOMOUS CONTROL CAPABILITIES

EXPRESS IMAGING SYSTEMS, ...

1. An illumination system, comprising:
a luminaire including at least one light source;
a controller to provide a signal output that autonomously adjusts a luminous output level of the at least one light source,
the controller including at least one processor;

a sensor communicably coupled to the controller to provide a signal that includes information indicative of an occurrence
or a lack of occurrence of a defined event; and

at least one set of machine executable instructions that when executed by the at least one processor cause the at least one
processor to:

determine whether the sensor is in at least one of: an operational mode or a failure mode;
wherein responsive to a determination that the sensor is in the failure mode, the processor provides the signal output based
at least in part on at least one value determined by the processor until a subsequent determination by the processor that
the sensor is in the operational mode; and

wherein responsive to a determination that the sensor is in the operational mode, the processor provides the signal output
based at least in part on the information included in the signal provided by the at least one sensor until a subsequent determination
by the processor that the sensor is in the failure mode.

US Pat. No. 9,288,873

SYSTEMS, METHODS, AND APPARATUSES FOR USING A HIGH CURRENT SWITCHING DEVICE AS A LOGIC LEVEL SENSOR

Express Imaging Systems, ...

1. A system to permit a line voltage switching device operable at a first voltage and a first current to provide, when in
an electrically continuous state, an output signal to a high-impedance controller input used to control the delivery of power
at the first voltage from a line voltage source to a load device, the system comprising:
a first node electrically, communicably, coupled to the line voltage switching device to receive a line voltage signal from
the line voltage switching device when the line voltage switching device is in the electrically continuous state;

a second node that outputs at the first voltage a first portion of the line voltage signal received at the first node, the
second node electrically, communicably, coupled through at least one first capacitive device to the first node;

a voltage divider electrically, communicably, coupled to the first node, the voltage divider including at least a first resistive
device serially electrically coupled to a second resistive device; and

a third node that provides a second portion of the line voltage signal received at the first node as the output signal indicative
of the electrically continuous state of the line voltage switching device to the high-impedance controller input, the third
node electrically, communicably, coupled between the first resistive device and the second resistive device, the output signal
at a second voltage lower than the first voltage and the output signal at a second current that is lower than the first current.

US Pat. No. 9,185,777

AMBIENT LIGHT CONTROL IN SOLID STATE LAMPS AND LUMINAIRES

Express Imaging Systems, ...

1. A method comprising:
providing a luminaire comprising:
a cover having a light transmissive portion at least partially formed from a light transmissive material;
a solid-state light source disposed within the cover, the solid-state light source having an illumination path that passes
through at least a portion of the light transmissive portion, the solid-state light source operative in an OFF state in which
no light is produced and an ON state in which at least some light is produced; and

a photosensitive transducer disposed within the cover, the photosensitive transducer having a detection path that passes through
at least a portion of the light transmissive portion and at least partially overlaps with the illumination path of the solid-state
light source, the photosensitive transducer operative to provide photosensitive transducer signals each indicative of a light
level of the detection path at a respective sampling time;

alternatingly operating the luminaire in a daytime mode wherein the solid-state light source is in the OFF state and a nighttime
mode wherein the solid-state light source produces at least some light in the illumination path, operating the luminaire in
the daytime mode comprises:

from time to time obtaining a photosensitive transducer signal from the photosensitive transducer;
analyzing a plurality of the obtained photosensitive transducer signals to determine the presence of a turn ON condition;
and

in response to determining the presence of the turn ON condition, controlling the solid-state light source to be in the ON
state and transitioning the luminaire from the daytime mode to the nighttime mode;

wherein operating the luminaire in the nighttime mode comprises:
from time to time controlling the solid-state light source to be in the OFF state for an OFF period that is imperceptible
to a human;

obtaining a photosensitive transducer signal having a sampling time that occurs during the OFF period while the solid-state
light source is in the OFF state;

analyzing a plurality of the obtained photosensitive transducer signals to determine the presence of a turn OFF condition;
and

in response to determining the presence of the turn OFF condition, controlling the solid-state light source to be in the OFF
state and transitioning the luminaire from the nighttime mode to the daytime mode.

US Pat. No. 9,241,401

SOLID STATE LIGHTING DEVICE AND METHOD EMPLOYING HEAT EXCHANGER THERMALLY COUPLED CIRCUIT BOARD

Express Imaging Systems, ...

1. A lighting device, comprising:
a heat exchanger having a circuit board mounting surface curved along a lateral dimension and a longitudinal dimension, the
lateral dimension perpendicular to the longitudinal dimension;

at least a first circuit board including a number of electrically insulative layers and a number of electrically conductive
paths, the first circuit board having a longitudinal dimension and a lateral dimension perpendicular to the longitudinal dimension,
a first major outer face, and a second major outer face, the first and the second major outer faces on opposite sides of the
first circuit board from one another, at least one thickness of the first circuit board defined between the first and the
second major outer faces; and

at least two solid state light emitters carried by the first circuit board and electrically coupled to the electrically conductive
paths of the first circuit board, wherein

at least the first circuit board is physically coupled to the circuit board mounting surface, such that the longitudinal dimension
of the first circuit board is curved along the longitudinal dimension of the circuit board mounting surface and the lateral
dimension of the first circuit board is curved along the lateral dimension of the circuit board mounting surface.

US Pat. No. 9,497,393

SYSTEMS AND METHODS THAT EMPLOY OBJECT RECOGNITION

EXPRESS IMAGING SYSTEMS, ...

1. An illumination system, comprising:
a light source which in use provides at least two levels of illumination;
a two-dimensional non-Passive Infrared (non-PIR) imager which in use images an area and to produce image data representative
of images across at least part of a visible portion of an electromagnetic spectrum; and

a controller communicatively coupled to the non-PIR imager, the controller receives the image data from the non-PIR imager,
wherein the controller performs one or more machine-vision object recognition techniques with respect to the received image
data to detect one or more visual features within the received image data and determines a match between the one or more visual
features and one or more defined features representative of a defined type of object to detect a presence of the defined type
of object in the area, and the controller coupled to control operation of the light source based on at least in part detection
of objects of the defined type of object in the area, wherein the controller adjusts the level of illumination provided to
the area from the light source to a first level when a level of ambient light is greater than a threshold level, adjusts the
level of illumination provided to the area from the light source to a second level that is greater than the first level when
the level of ambient light is less than the threshold level, and adjusts the level of illumination provided to the area from
the light source to a third level that is greater than the second level in response to detection of at least one object of
the defined type object in the area.

US Pat. No. 9,462,662

LOW POWER PHOTOCONTROL FOR LUMINAIRE

EXPRESS IMAGING SYSTEMS, ...

1. A photocontrol apparatus to provide a control signal to a high-impedance controller input used to control a delivery of
power to a load device, the photocontrol apparatus comprising:
a resistor having a first node and a second node;
a switch including a first node, a second node, and a third node, the first node electrically coupled to a line node of an
alternating current (AC) power source and the third node electrically coupled to the first node of the resistor, wherein the
second node of the resistor is an output node of the photocontrol that is electrically coupleable to the high-impedance controller
input;

a first capacitor having a first node and a second node, the first node of the first capacitor electrically coupled to the
first node of the switch and the second node of the first capacitor electrically coupled to the third node of the switch;

a direct current (DC) power supply circuit that includes:
a positive DC power supply node electrically coupled to the first node of the resistor;
a negative DC power supply node;
a second capacitor having a first node and a second node, the first node of the second capacitor electrically coupled to the
positive DC power supply node and the second node of the second capacitor electrically coupled to the negative DC power supply
node;

a zener diode having a cathode and an anode, the cathode of the zener diode electrically coupled to the positive DC power
supply node and the anode of the zener diode electrically coupled to the negative DC power supply node; and

a diode having a cathode and an anode, the cathode of the diode electrically coupled to the second node of the resistor and
the anode of the diode electrically coupled to the negative DC power supply node;

a comparator including a first power supply input node, a second power supply input node, a first input node, a second input
node, and an output node, wherein the output node is communicably coupled to the second node of the switch and one of the
first and the second power supply input nodes of the comparator is electrically coupled to the positive DC power supply node
of the DC power supply circuit and the other of the first and the second power supply input nodes of the comparator is electrically
coupled to the negative DC power supply node of the DC power supply circuit; and

an ambient light sensor having an output node electrically coupled to one of the first input node or the second input node
of the comparator, the ambient light sensor at least partially causes a voltage level of the one of the first input node or
the second input node to which the ambient light sensor is electrically coupled to change in response to the ambient light
sensor being at least partially illuminated with light.

US Pat. No. 9,125,261

ELECTRONIC CONTROL TO REGULATE POWER FOR SOLID-STATE LIGHTING AND METHODS THEREOF

Express Imaging Systems, ...

1. An illumination device, comprising:
a plurality of light emitters, a first number of light emitters of the plurality of light emitters being electrically coupled
in series to an input power;

a plurality of switches which when deactivated electrically couple a respective number of the light emitters to the input
power in addition to the first number of the light emitters, wherein each of the plurality of switches is electrically coupled
to short a respective one of the light emitters when activated; and

a control circuit controllingly coupled to the plurality of switches to activate and deactivate the switches in response to
a sensed operational parameter of the input power being greater than a first threshold value, where the first number of the
light emitters is coupled to the input power regardless of the sensed operational parameter of the input power.

US Pat. No. 9,301,365

LUMINAIRE WITH SWITCH-MODE CONVERTER POWER MONITORING

Express Imaging Systems, ...

1. A power monitoring system, comprising:
a power subsystem including:
at least one switch-mode power converter including at least one power converter drive circuit, the switch-mode power converter
electrically conductively coupled to provide an adjustable level power output to at least one solid state lighting subsystem
and the power converter drive circuit to adjust the power output level of the switch-mode power supply to the at least one
solid state lighting subsystem based on at least one of: a converter drive signal frequency or a converter drive signal pulse
width; and

a control subsystem communicably coupled to the power converter drive circuit, the control subsystem including: at least one
controller that determines at least an approximation of the power consumed by the power subsystem to generate the power output
to the at least one solid state lighting subsystem based at least in part on at least one of: information indicative of the
converter drive signal frequency or information indicative of the converter drive signal pulse width.

US Pat. No. 9,204,523

REMOTELY ADJUSTABLE SOLID-STATE LAMP

Express Imaging Systems, ...

1. A method of operation of a handheld computing device which includes at least one antenna, at least one transceiver communicatively
coupled to the at least one antenna, a number of user input elements, at least one processor communicatively coupled to the
at least one transceiver, the number of user input elements, and at least one non-transitory storage medium communicatively
coupled to the at least one processor and which stores processor executable instructions, the method comprising:
creating a first group logical association between two or more luminaires to form a first set from all available luminaires
for common configuration of the two or more luminaires in the first set;

determining via the processor a subset of luminaires of the first group which are within a communications range of the handheld
computing device at a first time;

transmitting signals via the transceiver only to the subset of luminaires of the first group, the signals to include configuration
information to the luminaires in the first set of luminaires;

transmitting via the transceiver to other luminaires of the first group as the other luminaires fall within the communications
range of the handheld computing device at a second time, as a relative position of the handheld computing device changes with
respect to the other luminaires; and

responsive to successful receipt of the configuration information by a luminaire within the first set, receiving via the transceiver
a unique acknowledgement message broadcast by the luminaire.

US Pat. No. 9,478,111

LONG-RANGE MOTION DETECTION FOR ILLUMINATION CONTROL

Express Imaging Systems, ...

1. An illumination system, comprising:
a two-dimensional non-Passive Infrared (non-PIR) imager that produces image data representative of images of an area, the
images of the area acquired across at least part of a visible portion of an electromagnetic spectrum;

a light source operable to provide at least two levels of illumination in addition to a zero level of illumination in at least
a portion of the area, wherein a first level of illumination corresponds to a non-zero level of illumination and a second
level of illumination corresponds to a higher level of illumination than the first level of illumination;

a controller communicably coupled to the non-PIR imager and to a nontransitory storage medium that includes controller executable
instructions which, when executed by the controller, cause the controller to:

receive data indicative of a dawn event on each of a plurality of days that precede a current day;
receive data indicative of a dusk event on each of the plurality of days that precede the current day;
determine a first solar time associated with an expected dawn event for the current day based on the received data indicative
of the dawn event on each of the plurality of days that precede the current day;

determine a second solar time associated with an expected dusk event for the current day based on the received data indicative
of the dusk event on each of the plurality of days that precede the current day;

logically associate a first period which is indicative of a daylight period with solar times of the current day between the
first solar time and the second solar time and a second period which is indicative of a non-daylight period with solar times
of the current day between the second solar time and the first solar time;

receive image data from the non-PIR imager;
detect at least one ambient environmental characteristic of the area indicative of a presence of an object or an imminent
presence of the object in the area based at least in part on the image data received from the non-PIR imager;

activate the light source at the first level of illumination for at least a portion of the second period; and
activate the light source at the second level of illumination for at least a portion of the second period responsive to detecting
the at least one ambient environmental characteristic of the area indicative of the presence of the object in the area or
the imminent presence of the object in the area.

US Pat. No. 9,414,449

HIGH EFFICIENCY POWER CONTROLLER FOR LUMINAIRE

Express Imaging Systems, ...

1. An illumination system, comprising:
one or more magnetic cores;
one or more control windings, each of the one or more control windings wound around at least a portion of at least one of
the one or more magnetic cores;

a control circuit electrically coupled to the one or more control windings, the control circuit controls a flow of direct
current through the one or more control windings which causes a biasing magnetic flux in the one or more magnetic cores;

one or more power windings, each of the one or more power windings wound around at least a portion of at least one of the
one or more magnetic cores, the one or more power windings which in operation receive alternating current from an alternating
current supply;

a plurality of solid-state light sources electrically coupled to the one or more power windings;
a rectifier electrically coupled to the one or more power windings and to the plurality of solid-state light sources, wherein
in operation the rectifier provides a direct current to drive the plurality of solid-state light sources; and

a flicker control circuit comprising a passive resonating circuit electrically coupled to the rectifier to increase a frequency
of an output signal of the rectifier to a frequency that is sufficiently high that a flicker from the plurality of solid-state
light sources is undetectable by an unaided human eye.

US Pat. No. 9,312,451

APPARATUS, METHOD TO ENHANCE COLOR CONTRAST IN PHOSPHOR-BASED SOLID STATE LIGHTS

EXPRESS IMAGING SYSTEMS, ...

1. A lighting device, comprising:
an active light source operable to emit light across a plurality of wavelengths;
at least one double-notch reflective filter that substantially passes light of a first set of wavelengths in the plurality
of wavelengths and that substantially reflects light of a second set of wavelengths in the plurality of wavelengths, the second
set of wavelengths including a first rejection band of about 400 nm to 480 nm and a second rejection band of about 570 nm
to 600 nm, the at least one double-notch reflective filter positioned in an optical path between the active light source and
an exterior of the lighting device to filter the light before the light reaches the exterior of the lighting device; and

a wavelength shifter positioned and oriented to receive at least some of the light of the second set of wavelengths returned
from the at least one double-notch reflective filter and in response emit light at wavelengths shifted from respective first
rejection band and the second rejection band toward an optical exit of the lighting device.

US Pat. No. 9,466,443

PHOTOCONTROL FOR LUMINAIRE CONSUMES VERY LOW POWER

Express Imaging Systems, ...

1. A photocontrol apparatus to provide a plurality of control signals to a high-impedance controller input used to control
the delivery of power to a load device, the apparatus comprising:
a switch including a first node, a second node, and a third node, the first node electrically, communicably coupled to a source
of electrical power and the third node electrically, communicably coupled to the high-impedance controller input; and

a photosensor electrically, communicably coupled between the second node and the third node, the photosensor operable to at
least partially cause a voltage level of the second node with respect to a voltage level of the third node to change when
the photosensor outputs current in response to being at least partially illuminated with light, wherein

when the voltage level of the second node with respect to the voltage level of the third node is greater than a threshold
voltage level, the third node outputs a first control signal, and

when the voltage level of the second node with respect to the voltage level of the third node is less than the threshold voltage
level, the third node outputs a second control signal different from the first control signal.

US Pat. No. 9,538,612

LOW POWER PHOTOCONTROL FOR LUMINAIRE

Express Imaging Systems, ...

1. A photocontrol apparatus to selectively provide alternating current (AC) power from an AC power source to a luminaire,
the photocontrol apparatus comprising:
an ambient light sensor having an output terminal which provides a signal responsive to an amount of light sensed by the ambient
light sensor;

an ambient light detection circuit including an input terminal and an output terminal, the input terminal electrically coupled
to the output terminal of the ambient light sensor, the output terminal of the ambient light detection circuit provides an
ambient light control signal which has a luminaire-on state and a luminaire-off state, the luminaire-on state indicates an
ambient light level detected by the ambient light sensor is at a level such that AC power is to be provided to the luminaire,
the luminaire-off state indicates the ambient light level detected by the ambient light sensor is at a level such that AC
power is not to be provided to the luminaire;

an AC sense circuit having an input terminal and an output terminal, the input terminal of the AC sense circuit electrically
coupleable to the AC power source, the output terminal provides an AC sense signal indicative of at least one characteristic
of the AC power source;

a switch including an input terminal, an output terminal and a control terminal, the input terminal electrically coupleable
to a line terminal of the AC power source, the output terminal electrically coupleable to a load terminal of the luminaire,
the switch having a closed state in which the switch electrically couples the luminaire to the AC power source and an opened
state in which the switch electrically decouples the luminaire from the AC power source; and

a switch control circuit having a first input terminal, a second input terminal and an output terminal, the first input terminal
electrically coupled to the output terminal of the AC sense circuit to receive the AC sense signal therefrom, the second input
terminal electrically coupled to the output terminal of the ambient light detection circuit to receive the ambient light control
signal therefrom, and the output terminal of the switch control circuit electrically coupled to the control terminal of the
switch to provide a switch control signal thereto, the switch control circuit:

detects a change of state of the ambient light control signal from the luminaire-off state to the luminaire-on state;
detects a zero-crossing of the AC power source based at least in part on the received AC sense signal; and
responsive to the detection of the zero-crossing of the AC power source, causes the switch to transition from the opened state
to the closed state which causes AC power to be provided to the luminaire from the AC power source.

US Pat. No. 9,801,248

APPARATUS AND METHOD OF OPERATING A LUMINAIRE

Express Imaging Systems, ...

1. A luminaire, comprising:
at least one solid state light source;
at least one photosensitive transducer responsive to at least one physical characteristic indicative of at least one light
condition in an ambient environment;

a lamp control subsystem comprising at least one controller and at least one non-transitory processor-readable medium, the
lamp control subsystem communicatively coupled to the photosensitive transducer to receive light condition signals indicative
of the at least one light condition in the ambient environment sensed by the photosensitive transducer, the lamp control subsystem
which:

determines an expected time for at least a first daily event, the first daily event associated with a respective first illumination
condition in the ambient environment;

detects an illumination condition in the ambient environment that matches the first illumination condition;
in response to detection of the illumination condition in the ambient environment that matches the first illumination condition,
verifies whether a time of detection of the detected illumination condition that matches the first illumination condition
is within a threshold of an expected time for the respective first daily event;

if verified, controls a supply of power to the at least one solid state light source responsive at least in part to the light
condition signals from the photosensitive transducer; and

if not verified, controls a supply of power to the at least one solid state light source according to a schedule, and not
according to the light condition signals from the photosensitive transducer.

US Pat. No. 9,713,228

APPARATUS AND METHOD OF ENERGY EFFICIENT ILLUMINATION USING RECEIVED SIGNALS

EXPRESS IMAGING SYSTEMS, ...

1. A method of operating an illumination system including at least one light source and at least one controller, the method
comprising:
detecting a level of light in an ambient environment;
comparing by the at least one controller the detected level of light in the ambient environment to a first threshold;
validating by the at least one controller a result of the comparison of the detected level of light in the ambient environment
to the first threshold with respect to at least one expected condition, the at least one expected condition comprising an
expected level of light for at least one of a current location, a current date or a current time; and

adjusting by the at least one controller an output of the at least one light source when both the detected level of light
in the ambient environment at least satisfies the first threshold and the result of the comparison is valid with respect to
the at least one expected condition.

US Pat. No. 9,781,797

HIGH EFFICIENCY POWER CONTROLLER FOR LUMINAIRE

Express Imaging Systems, ...

1. An illumination system, comprising:
one or more magnetic cores;
one or more control windings, each of the one or more control windings wound around at least a portion of at least one of
the one or more magnetic cores;

a control circuit electrically coupled to the one or more control windings, the control circuit controls a flow of direct
current through the one or more control windings which causes a biasing magnetic flux in the one or more magnetic cores;

one or more power windings, each of the one or more power windings wound around at least a portion of at least one of the
one or more magnetic cores, the one or more power windings directly electrically coupled to a first terminal of an alternating
current supply;

a rectifier directly electrically coupled to the one or more power windings; and
a plurality of solid-state light sources directly electrically coupled to a second terminal of the alternating current supply
and electrically coupled to the rectifier, wherein in operation the rectifier provides a direct current to drive the plurality
of solid-state light sources.

US Pat. No. 9,693,433

APPARATUS AND METHOD FOR SCHEDULE BASED OPERATION OF A LUMINAIRE

Express Imaging Systems, ...

1. A luminaire, comprising:
at least one light source;
at least one luminaire processor operatively coupled to the at least one light source;
at least one luminaire transceiver operatively coupled to the at least one luminaire processor and to at least one data communications
channel; and

at least one luminaire nontransitory processor-readable storage medium operatively coupled to the at least one luminaire processor
and which stores at least one of data or instructions which, when executed by the at least one luminaire processor, cause
the at least one luminaire processor to:

receive, via the at least one luminaire transceiver, geolocation information from an external device over the at least one
data communications channel, the geolocation information indicative of a geographical location of the external device when
the external device is positioned proximate the luminaire;

store the received geolocation information in the at least one nontransitory processor-readable storage medium as luminaire
geolocation information for the luminaire, the luminaire geolocation information indicative of a position of the luminaire
on a surface of the Earth;

receive, via the at least one luminaire transceiver, reference time data from an external device over the at least one data
communications channel;

store the received reference time data in the at least one nontransitory processor-readable storage medium;
determine at least one solar event time without utilizing a photosensitive transducer based at least in part on the received
geolocation information and the received reference time data; and

control the operation of the at least one light source based at least in part on the determined at least one solar event time.

US Pat. No. 9,961,731

LUMINAIRE WITH TRANSMISSIVE FILTER AND ADJUSTABLE ILLUMINATION PATTERN

EXPRESS IMAGING SYSTEMS, ...

1. A luminaire, comprising:an active light source which emits light across a plurality of wavelengths;
at least one transmissive filter positioned in a first portion of an optical path of the active light source between the active light source and an optical exit of the luminaire to receive an incident portion of the emitted light, the at least one transmissive filter positioned outside of a second portion of the optical path such that a non-incident portion of the emitted light in the second portion of the optical path exits the optical exit of the luminaire without striking the at least one transmissive filter, the at least one transmissive filter transmits light of the incident portion having a wavelength in a first set of wavelengths in the plurality of wavelengths and reflects light of the incident portion having a wavelength in a second set of wavelengths in the plurality of wavelengths; and
a wavelength shifter positioned and oriented to receive the transmitted portion of the incident portion and in response emit light at a shifted wavelength toward the optical exit of the luminaire.

US Pat. No. 9,967,933

ELECTRONIC CONTROL TO REGULATE POWER FOR SOLID-STATE LIGHTING AND METHODS THEREOF

Express Imaging Systems, ...

1. A regulator device to regulate an input power supply that supplies power to a plurality of light emitters, the plurality of light emitters electrically coupled in series between an input power node of the input power supply and a reference node, the regulator device comprising:a plurality of switches each of which selectively electrically couples a respective number of the light emitters to receive power from the input power supply via the input power node when the switch is deactivated; and
a control circuit electrically coupled to the input power node of the input power supply and controllingly coupled to the plurality of switches, the control circuit senses an operational parameter of the input power supply, the operational parameter comprising an entire voltage value between the input power node of the input power supply and the reference node, the control circuit deactivates a number of the switches to electrically couple the respective light emitters to the input power supply and a first number of the light emitters responsive to the sensed operational parameter of the input power supply, and adjusts the number of the switches deactivated responsive to a change in the sensed operational parameter of the input power supply, where the first number of the light emitters are coupled to the input power supply regardless of the sensed operational parameter of the input power supply.

US Pat. No. 9,985,429

INRUSH CURRENT LIMITER CIRCUIT

Express Imaging Systems, ...

1. An inrush current protection circuit, comprising:an input terminal electrically coupleable to an output terminal of a control switch, the control switch selectively couples an alternating current (AC) power source to a load;
an output terminal electrically coupleable to the load;
a load pre-charge circuit electrically coupled between the input terminal and the output terminal;
a bidirectional AC switch including a switch input terminal, a switch output terminal, and a switch control terminal, the switch input terminal electrically coupled to the input terminal of the protection circuit and the switch output terminal electrically coupled to the output terminal of the protection circuit such that the bidirectional AC switch is electrically coupled in parallel with the load pre-charge circuit, the bidirectional AC switch having an opened state, in which the bidirectional AC switch has a high resistance which inhibits AC flow, and a closed state, in which the bidirectional AC switch has a low resistance which permits AC flow; and
a switch control circuit electrically coupled to the switch control terminal of the bidirectional AC switch and electrically coupleable to the input terminal of the protection circuit to receive power from the AC power source via the control switch, in operation the switch control circuit:
causes the bidirectional AC switch to be in the opened state while the control switch is open;
detects AC power from the AC power source via the input terminal of the protection circuit due to a closing of the control switch;
responsive to the detection of AC power, causes the bidirectional AC switch to remain in the opened state for a determined delay period which causes current to flow through the load pre-charge circuit; and
causes the bidirectional AC switch to transition from the opened state to the closed state after the determined delay period which causes current to flow through the bidirectional AC switch and to bypass the load pre-charge circuit.

US Pat. No. 10,098,212

SYSTEMS AND METHODS FOR CONTROLLING OUTDOOR LUMINAIRE WIRELESS NETWORK USING SMART APPLIANCE

Express Imaging Systems, ...

1. An illumination system, comprising:a plurality of terminal luminaires, each of the terminal luminaires comprising:
at least one terminal luminaire processor;
at least one light source operatively coupled to the at least one terminal luminaire processor;
a terminal luminaire transceiver operatively coupled to the at least one terminal luminaire processor, in operation the terminal luminaire transceiver communicates via a first communications protocol; and
at least one nontransitory processor-readable storage medium operatively coupled to the at least one terminal luminaire processor and storing at least one of data or instructions;
a gateway luminaire comprising:
at least one gateway luminaire processor;
at least one light source operatively coupled to the at least one gateway luminaire processor;
a first gateway luminaire transceiver operatively coupled to the at least one gateway luminaire processor, in operation the first gateway luminaire transceiver communicates via the first communications protocol;
a second gateway luminaire transceiver operatively coupled to the at least one gateway luminaire processor, in operation the second gateway luminaire transceiver communicates via a second communications protocol, the second communications protocol different from the first communications protocol; and
at least one nontransitory processor-readable storage medium operatively coupled to the at least one gateway luminaire processor and storing at least one of data or instructions which, when executed by the at least one gateway luminaire processor, cause the at least one gateway luminaire processor to:
receive, via the second gateway luminaire transceiver, at least one of instructions or data from at least one mobile system; and
send, via the first gateway luminaire transceiver, the received at least one of instructions or data to at least one of the plurality of terminal luminaires.

US Pat. No. 9,924,582

LUMINAIRE DIMMING MODULE USES 3 CONTACT NEMA PHOTOCONTROL SOCKET

Express Imaging Systems, ...

1. A dimmer plug that is coupleable to a three contact socket of a luminaire, the three contact socket having three female
receptacles, the dimmer plug comprising:
a housing having a first face;
only three male electrical contacts, the three male electrical contacts which extend from the first face of the housing, and
arranged with respect to one another in a first arrangement;

a receiver housed by the housing and operable to receive input signals; and
circuitry housed by the housing and communicatively coupled to the receiver, the circuitry operable to provide an output signal
via one of the three male electrical contacts based on the input signals received by the receiver and operable to control
dimming of the luminaire without controlling a line power of the luminaire.

US Pat. No. 10,164,374

RECEPTACLE SOCKETS FOR TWIST-LOCK CONNECTORS

Express Imaging Systems, ...

1. A twist-lock connector that receives a set of male electrical contacts, the twist-lock connector comprising:a set of female electrical receptacles that correspond to the set of male electrical contacts, the set of female electrical receptacles sized and dimensioned to receive the set of male electrical contacts, and the set of female electrical receptacles are physically engageable with the set of male electrical contacts when each of the male electrical contacts in the set of male electrical contacts are inserted into respective ones of the female electrical receptacles in the set of female electrical receptacles and rotated;
a primary printed circuit board that has a first face and an opposing second face, the first face directed towards the female electrical receptacles; and
a set of electrical connectors that correspond to the set of male electrical contacts, each of the electrical connectors positioned on respective ones of a set of flexible portions of the primary printed circuit board, each of the flexible portions resiliently deform responsive to one of the male electrical contacts contacting and exerting a force on the electrical connector positioned on the flexible portion to provide a biasing force that urges the electrical connector toward the male electrical contact.

US Pat. No. 10,219,360

SYSTEMS AND METHODS FOR OUTDOOR LUMINAIRE WIRELESS CONTROL

EXPRESS IMAGING SYSTEMS, ...

1. A wireless adapter system, comprising:an adapter system physical luminaire interface that is physically coupleable to a physical luminaire interface of a luminaire to receive alternating current (AC) power from the luminaire;
a first adapter system transceiver that in operation wirelessly communicates with a luminaire transceiver of the luminaire;
at least one processor communicatively coupled to the first adapter system transceiver; and
at least one nontransitory processor-readable storage medium operatively coupled to the at least one processor and storing at least one of data or instructions which, when executed by the at least one processor, cause the at least one processor to:
cause the first adapter system transceiver to at least one of:
wirelessly send data or instructions to the luminaire; or
wirelessly receive data or instructions from the luminaire.

US Pat. No. 10,230,296

OUTPUT RIPPLE REDUCTION FOR POWER CONVERTERS

EXPRESS IMAGING SYSTEMS, ...

1. A circuit to reduce output ripple in a direct current (DC) power converter, the DC power converter comprising first and second output nodes which provides DC power that includes an AC ripple having a ripple frequency (fRIPPLE) which is a multiple of an AC power source which provides power to the DC power converter, the circuit comprising:a transformer comprising:
a core;
a primary winding wrapped around at least a portion of the core a first number of times, the primary winding comprising a first primary terminal having a first polarity and a second primary terminal having a second polarity opposite the first polarity, the first primary terminal electrically coupled to the first output node of the DC power converter; and
a secondary winding wrapped around at least a portion of the core a second number of times, the secondary winding comprising a first secondary terminal having the first polarity and a second secondary terminal having the second polarity, the first secondary terminal electrically coupled to a first load terminal of a load; and
a first capacitor having a first capacitor terminal and a second capacitor terminal, the first capacitor terminal electrically coupled to the second primary terminal and the second secondary terminal of the transformer, and the second capacitor terminal electrically coupled to the second output node of the DC power converter.