Photoreceptor
# Photoreceptor

Photoreceptor can refer to:

In anatomy/cell biology:

* Photoreceptor cell, a photosensitive cell in the retina of vertebrate eyes
* Simple eye in invertebrates (Ocellus), photoreceptor organ ("simple eye") of invertebrates often composed of a few sensory cells and a single lens
* Eyespot apparatus (microbial photoreceptor), the photoreceptor organelle of a unicellular organism that allows for phototaxis

In biochemistry:

* Photoreceptor protein, a chromoprotein that responds to being exposed to a certain wavelength of light by initiating a signal transduction cascade
* Photopigment, an unstable pigment that undergoes a physical or chemical change upon absorbing a particular wavelength of light; also see
   * Photosynthetic pigment, molecules involved in transducing light into chemical energy

In technology:

