US Patent No. 10,433,387

LIGHT EMITTING DEVICE AND LIGHT EMITTING AND RECEIVING DEVICE


Patent No. 10,433,387
Issue Date October 01, 2019
Title Light Emitting Device And Light Emitting And Receiving Device
Inventorship Hiromi Fujita, Tokyo (JP)
Yoshiki Sakurai, Tokyo (JP)
Assignee Asahi Kasei Microdevices Corporation, Tokyo (JP)

Claim of US Patent No. 10,433,387

1. A light emitting device comprising:a light emitting element;
a molded resin portion configured to seal at least a portion of the light emitting element;
a temperature information acquiring unit configured to acquire temperature information;
a humidity information calculating unit configured to calculate humidity information, based on information relating to at least either electrical characteristics or optical characteristics of the light emitting element and the temperature information;
a controlling unit configured to control the light emitting element, based on the temperature information and the humidity information; and
an auxiliary element at least a portion of which is sealed by the molded resin portion, wherein
the light emitting element is disposed to be influenced by a stress of the molded resin portion,
the temperature information includes information relating to temperature of the light emitting element or temperature of the molded resin portion, and the humidity information includes information relating to humidity of the molded resin portion based on change in swelling stress, and
at least either the temperature information or the humidity information includes information relating to at least either electrical characteristics or optical characteristics of the auxiliary element.