photoreceptor
This term describes the biological or mechanical interface between light and electrical energy. In biological contexts, it refers to the specialized sensory neurons in the eye, such as rods and cones, which trigger neural impulses upon absorbing photons. In technical contexts, it refers to components like photoresistors or photodiodes used in automation. These devices allow machines to react to environmental lighting changes, such as triggering a street lamp or a camera shutter.
Meanings
A specialized cell or protein that converts light energy into an electrical signal.
"The rods and cones in the human retina are the primary photoreceptors."
A device or sensor designed to detect light and convert it into an electrical current for electronic processing.
"The automatic street lights are triggered by a sensitive photoreceptor."