発はっ光こう素そ子し

は

っ

こ

う

そ

し

Meanings

1

noun

light-emitting element; light emitter

computing

Technical term used in fiber optics and electronics for a component that emits light, such as an LED or laser diode.

発departure, discharge, publish

光ray, light

素elementary, principle, naked

子child, sign of the rat, 11PM-1AM

受じゅ光こう素そ子し
受光素子 is a light-receiving element, the counterpart to 発光素子.
LED
LED is a common type of 発光素子, but 発光素子 is a broader category that includes laser diodes and other emitters.

Compound of 発光 (はっこう, 'light emission') and 素子 (そし, 'element, device').