US Pat. No. 9,061,869

LIFT ASSEMBLY SYSTEMS AND METHODS

Electronic Theatre Contro...

1. A lift assembly comprising:
an article to be lifted between a lowered position and a raised position;
a flexible drive element coupled to the article and defining a longitudinal axis;
a power mechanism coupled to the drive element;
a drum powered by the power mechanism and dimensioned to facilitate winding of the drive element onto the drum;
a cable keeper providing a force on the drive element to bias the drive element toward the drum;
a keeper shaft coupled to the cable keeper to provide movement of the cable keeper laterally relative to the longitudinal
axis; and

an encoder mounted for rotation with the keeper shaft, wherein the encoder provides information regarding the position of
the article from the lowered position to the raised position.

US Pat. No. 9,309,094

LIFT ASSEMBLY SYSTEMS AND METHODS

Electronic Theatre Contro...

1. A lift system configured to lift an article, the lift system comprising:
a drum that rotates about an axis;
a first cable that winds around the drum when the drum rotates about the axis in a first direction to raise the article and
the first cable unwinds from the drum when the drum rotates about the axis in a second direction to lower the article;

a motor operable to rotate the drum about the axis in the first direction;
an electrical cable configured to supply power from a power source to the article; and
a second cable that is coupled to the electrical cable and the second cable pulls at least a portion of the electrical cable
from a substantially vertical position to a substantially horizontal position.

US Pat. No. 9,260,279

LIFT ASSEMBLY WITH TAPERED DRUMS

Electronic Theatre Contro...

1. A lift assembly comprising:
a base;
a drive mechanism;
a drum assembly adapted to be driven by the drive mechanism, the drum assembly including first and second drum segments positioned
adjacent each other, each drum segment including a small diameter portion, a large diameter portion, and a tapered portion
between the small diameter portion and the large diameter portion; and

first and second flexible drive elements at least partially wrapped around the small diameter portions of the first and second
drum segments, respectively;

wherein the large diameter portion of the first drum segment abuts the small diameter portion of the second drum segment.

US Pat. No. 9,140,425

CYC ATTACHMENT FOR A LIGHT ENGINE

Electronic Theatre Contro...

1. A light-diffusing attachment for a light engine having a housing, comprising:
a frame adapted to be secured to the housing of the light engine;
a refracting lens supported by the frame; and
a diffuser supported by the frame,
wherein the refracting lens comprises a lenticular lens,
wherein the lenticular lens includes a first array with a first orientation and a second array with a second orientation different
than the first orientation.

US Pat. No. 9,451,668

SYSTEM AND METHOD FOR CONTROLLING A PLURALITY OF LIGHT FIXTURE OUTPUTS

Electronic Theatre Contro...

1. A method of controlling a plurality of light fixtures, the method comprising:
determining a first light output of a first light fixture, the first light output having a first output color, the first output
color having a first output spectrum;

determining a second light output of a second light fixture, the second light output having a second output color, the second
output color having a second output spectrum;

detecting a first reflection of light from a surface, the first reflection of light corresponding to light from the first
light fixture and the second light fixture that is reflected off of the surface;

analyzing the first reflection of light to determine a spectrum of the light reflected off of the surface;
determining a difference in color between the first light output and the second light output;
determining a difference between the spectrum of the light reflected off of the surface and a desired spectrum of the light
reflected off of the surface;

when a difference in color between the first light output and the second light output is identified, calculating an updated
output color of at least one of the first light fixture and the second light fixture such that the first output color substantially
matches the second output color;

when a difference in the spectrum of the light reflected off of the surface and the desired spectrum of the light reflected
off of the surface is identified, calculating an updated output spectrum for at least one of the first light fixture and the
second light fixture such that the first output spectrum substantially matches the second output spectrum without further
changing the first output color, or the second output color;

determining a respective light source output value for each light source in each of the first light fixture and the second
light fixture such that the first output color substantially matches the second output color, the first output spectrum substantially
matches the second output spectrum; and

driving each of the light sources in each of the first light fixture and the second light fixture at the respective light
source output value.

US Pat. No. 9,493,328

LIFT ASSEMBLY SYSTEMS AND METHODS

Electronic Theatre Contro...

1. A lift system configured to lift an article, the lift system comprising:
a drum that rotates about an axis;
a drive mechanism operable to rotate the drum about the axis;
an elongate member having a wound portion wound around the drum and a vertical portion extending downward from the drum to
the article being lifted, the drum rotatable by the drive mechanism to wind the elongate member around the drum to raise the
article and the drum rotatable to unwind the elongate member from around the drum to lower the article; and

a low profile adjuster for adjusting a vertical length of the vertical portion of the elongate member, the low profile adjuster
comprising:

a first guide adapted to support the article to be lifted, the first guide including a first pathway;
a second guide movable relative to the first guide, wherein the elongate member transitions from the vertical portion, through
the first pathway to a non-vertical portion, and to the second guide, and wherein adjustment of a distance between the first
guide and the second guide results in adjustment of a vertical position of the first guide relative to the drive mechanism,
and

wherein the low profile adjuster is coupled to the elongate member along the vertical portion of the elongate member for movement
with the vertical portion of the elongate member relative to the drum when the drum is rotated to wind and unwind the elongate
member such that the low profile adjust moves with the article between a raised and a lowered position the article.

US Pat. No. 9,242,186

LOFT BLOCK WITH ALIGNED SHEAVES

Electronic Theatre Contro...

1. A lift system configured to lift an article, the lift system comprising:
a first cable configured to be coupled to the article;
a second cable configured to be coupled to the article;
a drive mechanism coupled to the first cable and the second cable and operable to raise and lower the article;
a first loft block including a first loft sheave to redirect the first cable from a first substantially horizontal axis to
a first substantially vertical axis, and an idler sheave to direct the second cable along a second substantially horizontal
axis; and

a second loft block including a second loft sheave to redirect the second cable from the second substantially horizontal axis
to a second substantially vertical axis, wherein the idler sheave of the first loft block is located at least partially above
the first horizontal axis,

wherein the first vertical axis extends through the idler sheave such that at least a portion of the idler sheave vertically
overlaps with the first loft sheave.

US Pat. No. 9,340,396

NESTED LIFT ASSEMBLIES

Electronic Theatre Contro...

1. A group of lift assemblies comprising:
a first lift assembly including:
a base having a first side and a second side opposite the first side, the base having an end defining an outlet positioned
closer to the first side than to the second side;

a take-up mechanism mounted to the base;
a cable having a stored portion on the take-up mechanism and a free portion extending from the take-up mechanism through the
outlet;

a second lift assembly including:
a base having a first side and a second side opposite the first side, the base having an end defining an outlet positioned
closer to the first side than to the second side;

a take-up mechanism mounted to the base;
a cable having a stored portion on the take-up mechanism and a free portion extending from the take-up mechanism through the
outlet,

wherein the first side of the first lift assembly is positioned adjacent the second side of the second lift assembly, such
that the cable exiting the outlet of the first lift assembly is spaced from the cable exiting the outlet of the second lift
assembly; and

a third lift assembly including:
a base having a first side and a second side opposite the first side, the base having a first end defining an outlet positioned
closer to the first side than to the second side, and the base further having a second end opposite the first end;

a take-up mechanism mounted to the base;
a cable having a stored portion on the take-up mechanism and a free portion extending from the take-up mechanism through the
outlet,

wherein the second end of the base of the third lift assembly abuts the ends of the first and second lift assemblies, and
wherein the cable exiting the outlet of the third lift assembly is positioned between the cables exiting the first and second
lift assemblies.

US Pat. No. 9,253,842

DIMMABLE LIGHT EMITTING DIODE LIGHTING SYSTEM

Electronic Theatre Contro...

1. A light-emitting diode (“LED”) lighting system comprising:
a dimmer having a preheat function and configured to generate a dimming signal;
a group of LEDs configured to be driven by an LED drive signal;
a dimming controller configured to
receive the dimming signal from the dimmer, and
generate a first pulse-width modulated (“PWM”) signal based on the dimming signal, the first PWM signal having a first duty
cycle;

a software controller in electrical communication with the dimming controller, the software controller configured to
receive the first PWM signal from the dimming controller, and
compensate the first PWM signal for the preheat function of the dimmer to generate a second PWM signal, the second PWM signal
having a second duty cycle, the second duty cycle being different than the first duty cycle; and

an LED driver module configured to
receive the second PWM signal,
generate the LED drive signal based on the second PWM signal, the LED drive signal associated with a drive level of the group
of LEDs, and

transmit the LED drive signal to the group of LEDs.

US Pat. No. 9,144,140

SYSTEM AND METHOD FOR CONTROLLING A PLURALITY OF LIGHT FIXTURE OUTPUTS

Electronic Theatre Contro...

1. A method of controlling a plurality of light fixtures, the method comprising:
detecting a first light output of a first light fixture, the first light output having a first output color and a first output
brightness, the first output color having a first output spectrum;

detecting a second light output of a second light fixture, the second light output having a second output color and a second
output brightness, the second output color having a second output spectrum;

detecting a first reflection of light from a surface, the first reflection of light corresponding to light from the first
light fixture and the second light fixture that is reflected off of the surface;

analyzing the first light output to determine the first output color and the first output brightness;
analyzing the second light output to determine the second output color and the second output brightness;
analyzing the first reflection of light to determine a spectrum of the light reflected off of the surface;
determining a difference in color between the first light output and the second light output;
determining a difference in brightness between the first output brightness and the second output brightness;
determining a difference between the spectrum of the light reflected off of the surface and a desired spectrum of the light
reflected off of the surface;

when a difference in color between the first light output and the second light output is identified, calculating an updated
output color of at least one of the first light fixture and the second light fixture such that the output color of the first
light output of the first light fixture substantially matches the output color of the second light output of the second light
fixture;

when a difference in brightness between the first output brightness and the second output brightness is identified, calculating
an updated output brightness for at least one of the first light fixture and the second light fixture such that the output
brightness of the first light output of the first light fixture substantially matches the output brightness of the second
light output of the second light fixture;

when a difference in the spectrum of the light reflected off of the surface and the desired spectrum of the light reflected
off of light from the surface is identified, calculating an updated output spectrum for at least one of the first light fixture
and the second light fixture such that the first output spectrum substantially matches the second output spectrum without
further changing the first output color, the second output color, the first output brightness, or the second output brightness;

determining a respective light source output value for each light source in each of the first light fixture and the second
light fixture such that the first output color substantially matches the second output color, the first output spectrum substantially
matches the second output spectrum, and the first output brightness substantially matches the second output brightness; and

driving each of the light sources in each of the first light fixture and the second light fixture at the respective light
source output value.

US Pat. No. 9,281,139

COVER ASSEMBLY FOR AN ELECTRICAL SWITCH

Electronic Theatre Contro...

1. A cover assembly for a first electrical switch and a second electrical switch, the cover assembly comprising:
an alignment plate configured to be removably coupled to the first electrical switch, the alignment plate including,
a first alignment feature that receives a first portion of the first electrical switch to align the alignment plate with the
first electrical switch,

a second alignment feature that receives a first portion of the second electrical switch to align the alignment plate with
the second electrical switch and to align the second electrical switch with the first electrical switch,

a third alignment feature that receives a second portion of the first electrical switch,
a fourth alignment feature that receives a second portion of the second electrical switch, and
a divider that extends from the first and second alignment features to the third and fourth alignment features; and
a faceplate that is removably coupled to the alignment plate.

US Pat. No. 9,728,977

CONTROL OF POWER DISTRIBUTION SYSTEM

Electronic Theatre Contro...

1. A first and a second non-transitory medium for use in connection with a power distribution system comprising a handheld
device, a power distribution device, and a plurality of outlets, the handheld device including a first controller, the power
distribution device including a second controller, the power distribution device is located in a first room and is physically
separated from the plurality of outlets, a first outlet of the plurality of outlets is located in a second room, each outlet
of the plurality of outlets including a socket and indicia located proximate to the socket,
the first non-transitory medium comprising instructions that when executed by the first controller cause the first controller
to:

scan indicia of the first outlet,
determine an identifier of the first outlet based on the scanned indicia,
receive a set of input data via a user interface,
determine a target setting of the first outlet based on the set of input data and the scanned indicia, and
transmit the target setting,the second non-transitory medium comprising instructions that when executed by the second controller cause the second controller
to:
receive the target setting, and
provide electrical power to the first outlet based on the target setting.

US Pat. No. 9,908,755

LIFT ASSEMBLY WITH LOAD CELLS

Electronic Theatre Contro...

1. A lift assembly comprising:
a base;
a drive mechanism;
first and second flexible drive elements driven by the drive mechanism;
first and second sheaves directing the first and second drive elements, respectively, along paths in first and second directions,
respectively; and

a first load cell for sensing a first load on the first sheave in the first direction and a second load cell for sensing a
second load on the second sheave in the second direction;

wherein the first and second sheaves are mounted to first and second sheave mounts, respectively, and wherein the first and
second load cells sense load on the first and second sheave mounts, respectively;

wherein the first and second sheave mounts are provided on first and second sheave plates, respectively; wherein the first
sheave plate is positioned at least partially directly below the second sheave plate.

US Pat. No. 9,713,222

SYSTEM AND METHOD FOR CONTROLLING A PLURALITY OF LIGHT FIXTURE OUTPUTS

Electronic Theatre Contro...

1. A method of controlling a plurality of light fixtures, the method comprising:
driving light sources in each of the plurality of light fixtures at a first set of light source output values;
determining first light outputs for each of the plurality of light fixtures, each of the first light outputs having a first
output spectrum;

determining a first spectrum of light reflected off of a surface, the light reflected off of the surface corresponding to
light from the plurality of light fixtures;

determining a first difference between the first light outputs and desired light outputs for each of the plurality of light
fixtures;

determining a second difference between the first spectrum of light reflected off of the surface and a desired spectrum of
light reflected off of the surface;

calculating an updated output spectrum for the plurality of light fixtures based at least in part on the first difference
and the second difference;

determining a second set of light source output values based at least in part on the updated output spectrum; and
driving the light sources in each of the plurality of light fixtures at the second set of light source output values.

US Pat. No. 10,082,280

THEATRE LIGHT APPARATUS AND METHOD INCORPORATING A PLURALITY OF LIGHT SOURCES WITH ANTI-COLLISION

ELECTRONIC THEATRE CONTRO...

18. A method of operating a theatrical lighting system comprising:changing a current position of a first light source from a first position to a second position remotely by use of a computer processor implementing a computer program stored in a computer memory;
changing a current position of a second light source from a third position to a fourth position remotely by use of a computer processor implementing a computer program stored in a computer memory;
changing a current position of a third light source from a fifth position to a sixth position remotely by use of a computer processor implementing a computer program stored in a computer memory;
wherein the first light source cannot be moved from the first position to the second position, while the second light source is in the third position, without colliding with the second light source;
wherein the first light source cannot be moved from the first position to a seventh position, while the third light source is in the fifth position, without colliding with the third light source;
wherein the computer program prevents the first light source from colliding with the second light source and the first light source from colliding with the third light source;
wherein the first light source, the second light source, and the third light source are part of a lamp housing;
wherein the lamp housing is rotatably mounted to a base;
wherein the lamp housing has a front arc having a radius;
wherein the first, second, and third light sources are arranged along the front arc; and
wherein the first, second and third light sources pivot on the same plane.

US Pat. No. 9,962,620

LOFT BLOCK WITH ALIGNED SHEAVES

Electronic Theatre Contro...

1. A lift system configured to lift an article relative to a structural member, the lift system comprising:a first cable configured to be coupled to the article;
a second cable configured to be coupled to the article;
a drive mechanism coupled to the first cable and the second cable and operable to raise and lower the article;
a plurality of loft blocks including a first loft block positioned closer to the drive mechanism than the other plurality of loft blocks, the first loft block including a first loft sheave rotatable about a loft axis and configured to redirect the first cable from a first substantially horizontal axis to a first substantially vertical axis, the first substantially horizontal axis defined by a portion of the first cable positioned closer to the drive mechanism than the first loft block, the first loft block further including a guide member configured to support the second cable along a second substantially horizontal axis, the second substantially horizontal axis defined by a portion of the second cable positioned closer to the drive mechanism than the first loft block, and wherein the portion of the first cable is obliquely oriented relative to the portion of the second cable in a direction non-parallel to the loft axis; and
a second loft block of the plurality of loft blocks including a second loft sheave configured to redirect the second cable to a second substantially vertical axis,
wherein the guide member of the first loft block is located at least partially above the first substantially horizontal axis, and
wherein the first substantially vertical axis extends through the guide member such that at least a portion of the guide member vertically overlaps with the first loft sheave.

US Pat. No. 10,148,071

BREAKER MODULE WITH RECESSED BREAKER CONNECTIONS

Electronic Theatre Contro...

1. A breaker module for use with a breaker board having a bus bar including a first engagement feature, a board mount spaced from the bus bar, a back surface between the bus bar and the board mount, a well recessed into the back surface between the bus bar and the board mount, and board connections positioned in the well between the bus bar and the board mount, the breaker module comprising:a breaker housing defining a bottom surface,
a line side connector including a second engagement feature adapted to engage the first engagement feature to inhibit separation of the breaker module from the breaker board,
a module mount adapted to engage the board mount,
a platform protruding from the bottom surface between the line side connector and the module mount, and
breaker connections recessed into the platform positioned between the line side connector and the module mount and adapted to engage the board connections,
wherein the platform is dimensioned to mate into the well to facilitate coupling of the breaker connections to the board connections.

US Pat. No. 9,876,334

BREAKER ASSEMBLY WITH MATING PLATFORM AND WELL CONNECTION

Electronic Theatre Contro...

1. A breaker assembly comprising:
a breaker board having:
a bus bar including a first engagement feature,
a board mount spaced from the bus bar,
a back surface between the bus bar and the board mount,
a well recessed into the back surface between the bus bar and the board mount, and
board connections positioned in the well between the bus bar and the board mount; and
a breaker module having:
a breaker housing defining a bottom surface,
a line side connector including a second engagement feature engaging the first engagement feature to inhibit separation of
the breaker module from the breaker board,

a module mount adapted to engage the board mount,
a platform protruding from the bottom surface between the line side connector and the module mount, and
breaker connections recessed into the platform positioned between the line side connector and the module mount and adapted
to be engaged with the board connections,
wherein the platform is dimensioned to mate into the well to facilitate coupling of the breaker connections to the board connections.

US Pat. No. 9,962,621

COMPACT HOIST SYSTEM

Electronic Theatre Contro...

1. A hoist system, comprising:a first length of drum disposed about a first drum shaft and having a first elongate member coupled at one end to the first length of drum;
a first motor coupled by a spline shaft to the first drum shaft for imparting a rotational motion upon the first length of drum while permitting longitudinal motion of the first length of drum with respect to an axis of rotation of the first drum shaft, the elongate member winding about the first length of drum upon rotation of the first drum shaft in a first rotational direction; and
a batten encasing the first length of drum and having an opening therein for permitting the elongate member to emerge therefrom, the elongate member having a second end adapted to be fixed to an elevated support structure for supporting the hoist system, the batten having a longitudinal axis substantially parallel to the axis of rotation of the first length of drum;
the hoist system being expandable by coupling a second drum shaft to the first drum shaft and disposing about the second drum shaft a second length of drum.

US Pat. No. 9,935,495

AUTOMATIC TRANSFER SWITCH

Electronic Theatre Contro...

1. An automatic transfer switch comprising:a first latching relay having an opened state and a closed state, wherein a line connection of a first power source is connected to a line connection of an electrical load via the first latching relay when the first latching relay is in its closed state;
a second latching relay having an opened state and a closed state, wherein a neutral connection of the first power source is connected to a neutral connection of the electrical load via the second latching relay when the second latching relay is in its closed state;
a third latching relay having an opened state and a closed state, wherein a line connection of a second power source is connected to the line connection of the electrical load via the third latching relay when the third latching relay is in its closed state;
a fourth latching relay having an opened state and a closed state, wherein a neutral connection of the second power source is connected to the neutral connection of the electrical load via the fourth latching relay when the fourth latching relay is in its closed state; and
an electronic controller electrically coupled to the first latching relay, the second latching relay, the third latching relay, and the fourth latching relay, the electronic controller configured to
determine a voltage of the first power source,
connect the second power source to the electrical load when the voltage of the first power source is less than a first threshold, and
connect the first power source to the electrical load when the voltage of the first power source is greater than a second threshold.

US Pat. No. 10,544,018

LIFT ASSEMBLY WITH LOAD CELLS

Electronic Theatre Contro...

1. A lift assembly comprising:a base;
a drum including a longitudinal axis;
a flexible drive element driven by the drum and extending from the drum along a fleet axis; and
a sheave directing the drive element from the fleet axis to a first output axis different than the fleet axis when the sheave is coupled to the base in a first orientation relative to the base and the sheave is configured to be coupled to the base in a second orientation relative to the base different than the first orientation;
wherein in the first orientation, the sheave directs the drive element from the fleet axis to the first output axis, and
wherein to couple the sheave to the base in the second orientation, the sheave is repositioned relative to the base to an opposing side of the fleet axis to direct the drive element from the fleet axis to a second output axis different than the first output axis.

US Pat. No. 10,399,832

COMPACT HOIST ACCESSORIES AND COMBINATION SYSTEMS

Electronic Theatre Contro...

1. An overspeed brake assembly for use in a hoist system utilizing an elongate member, comprising:a rotary device coupled to the elongate member;
a centrifugal member coupled to the rotary device and being adapted to move from an inactive position to an active position when a rotational speed of the rotary device exceeds a predetermined limit;
a trip mechanism disposed in proximity to the rotary device, such that the rotary device in the inactive position may rotate freely of the trip mechanism, and such that the rotary device, upon rotation in the active position, actuates the trip mechanism;
a brake assembly coupled to the trip mechanism, the brake assembly comprising:
a key having formed therein a guide for receiving a jaw, the key being movable between a 1) disengaged position wherein the jaw is positioned in proximity to the elongate member and 2) an engaged position wherein the jaw is moved into contact with the elongate member, applying a braking force thereto;
a spring positioned to bias the key toward the engaged position;
a release, coupled to the trip mechanism, for maintaining the key in the disengaged position until the release is tripped by the trip mechanism.

US Pat. No. 10,328,358

LIFT ASSEMBLY SYSTEMS AND METHODS

Electronic Theatre Contro...

1. A lift system configured to lift an article, the lift system comprising:a drum that rotates about an axis;
an elongate member that winds around the drum when the drum rotates about the axis in a first direction to raise the article and that unwinds from the drum when the drum rotates about the axis in a second direction to lower the article;
a drive mechanism operable to rotate the drum about the axis; and
a braking mechanism adapted to inhibit rotation of the drum, the braking mechanism including:
a brake disk rotatable with the drum;
a movable brake pad; and
a ramp that guides movement of the movable brake pad relative to the brake disk.

US Pat. No. 10,227,221

LIFT ASSEMBLY SYSTEMS AND METHODS

Electronic Theatre Contro...

1. A lift assembly adapted to lift an article between a lowered position and a raised position, the lift assembly comprising:a drive element configured to be coupled to the article;
a power mechanism coupled to the drive element;
a drum defining a longitudinal axis, the drum powered by the power mechanism and dimensioned to facilitate winding of the drive element onto the drum;
a cable keeper arm including a cable contact member providing a force on the drive element to bias the drive element toward the drum; and
a ground out member operable to deactivate the power mechanism when the drive element contacts the ground out member, the ground out member coupled to the cable keeper arm.

US Pat. No. 10,183,850

COMPACT HOIST SYSTEM

Electronic Theatre Contro...

1. A cable management system for a hoist system, the hoist system configured to be supported by a fixed structural member via an elongate member, the hoist system configured to move between an extended position and a retracted position relative to the fixed structural member, the cable management system comprising:a guide bar having an opening configured to slidably receive the elongate member;
a cable configured to be electrically coupled to the hoist system to provide electrical power to the hoist system; and
a first guide connected to a first end of the guide bar and rotatable with respect to the guide bar, the first guide being connected to the cable to inhibit movement of the cable relative to the first guide, the first guide directing the cable at least one half of a revolution around the elongate member.

US Pat. No. 10,772,173

SYSTEMS, METHODS, AND DEVICES FOR CONTROLLING ONE OR MORE LED LIGHT FIXTURES

Electronic Theatre Contro...

1. A light fixture comprising:an array of light-emitting diode (“LED”) light sources corresponding to a color channel of the light fixture;
a driver circuit configured to drive the array of LED light sources; and
a controller including a non-transitory computer readable medium and a processing unit, the controller including computer executable instructions stored in the computer readable medium for controlling operation of the light fixture to:
receive a direct drive signal related to a direct drive signal value for the array of LED light sources,
determine an output of a reference light fixture based on the direct drive signal,
determine a value for a color channel drive signal based on the output of the reference light fixture, the value for the color channel drive signal corresponding to a drive value for the color channel that results in an output of the light fixture that matches the output of the reference light fixture, and
provide a control signal to the driver circuit to cause the driver circuit to apply the color channel drive signal having the value to the array of LED light sources.

US Pat. No. 10,415,967

SYSTEM AND METHOD FOR DETERMINING A POSITION OF A LIGHT FIXTURE

Electronic Theatre Contro...

1. A system for determining a position of a light fixture that projects a beam of light onto a stage to form a first beam pattern on the stage, the system comprising:an observing device located at a position relative to the stage to observe the first beam pattern; and
a controller in communication with the observing device, the controller configured to
capture from the observing device an image of the first beam pattern on the stage,
determine a major dimension and a minor dimension of the first beam pattern from the image,
determine an eccentricity of the first beam pattern based on the major dimension and the minor dimension, and
calculate a position of the light fixture relative to the stage based on the eccentricity.

US Pat. No. 10,240,768

LIGHT FIXTURE PANNING APPARATUS

Electronic Theatre Contro...

1. A light fixture panning apparatus comprising:a base;
a light fixture rotatably coupled to the base such that the light fixture rotates about an axis relative to the base; and
a bearing that facilitates rotation of the light fixture relative to the base about the axis, the bearing including a raceway and a rolling element that rolls along the raceway as the light fixture rotates about the axis relative to the base,
wherein the raceway is curved such that the raceway extends around at least a portion of the axis.

US Pat. No. 10,378,730

CYC LIGHT

Electronic Theatre Contro...

1. A cyc light assembly comprising:a base having a front direction defined by a front opening and a rear direction opposite the front direction;
a lighting element supported by the base and defining a central axis;
a first reflector positioned on a rear side of the lighting element to reflect light toward the front opening; and
a lens positioned in the front opening and adapted to bend light from the first reflector, wherein the lens includes a plurality of cylinder lens portions,
wherein the central axis intersects a midsection of the first reflector.

US Pat. No. 10,753,580

LIGHTING FIXTURE

Electronic Theatre Contro...

1. A lighting fixture comprising:a light source including an array of light emitting diodes (LEDs);
a reflector including a input end adjacent the array of LEDs and an output end opposite the input end such that the light source emits light through the reflector from the input end through the output end, the reflector further including a first, a second, a third, and a fourth sidewall that extend from the input end to the output end, the first and the second sidewalls each including an interior surface, the third and the fourth sidewalls each include an interior surface having a reflectivity that is more diffuse than the interior surfaces of the first and second sidewalls; and
a lens adjacent the output end of the reflector.

US Pat. No. 10,274,175

SYSTEMS AND METHODS FOR CONTROLLING THE POSITION OF A MOVING LIGHT FIXTURE

Electronic Theatre Contro...

1. A moving light fixture comprising:a housing;
one or more light sources disposed within the housing;
a stepper motor operably coupled to the housing such that the stepper motor rotates the housing about an axis of rotation;
a magnetic position encoder configured to transmit a position signal indicating an angular position of the housing about the axis of rotation; and
an electronic controller configured to
receive a target position of the moving light fixture,
determine the angular position of the housing about the axis of rotation based on the position signal,
determine a current full step of the stepper motor based on the angular position of the housing about the axis of rotation,
determine a current micro step of the stepper motor,
determine a current position of the moving light fixture based on the current full step of the stepper motor and the current micro step of the stepper motor, and
drive the stepper motor to move the moving light fixture from the current position to the target position.