Photoreceptor can refer to:
In anatomy/cell biology:
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Photoreceptor cell, a photosensitive cell in the retina of vertebrate eyes
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Simple eye in invertebrates (Ocellus), photoreceptor organ ("simple eye") of invertebrates often composed of a few sensory cells and a single lens
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Eyespot apparatus (microbial photoreceptor), the photoreceptor organelle of a unicellular organism that allows for phototaxis
In biochemistry:
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Photoreceptor protein, a chromoprotein that responds to being exposed to a certain wavelength of light by initiating a signal transduction cascade
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Photopigment, an unstable pigment that undergoes a physical or chemical change upon absorbing a particular wavelength of light; also see
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Photosynthetic pigment, molecules involved in transducing light into chemical energy
In technology:
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Photodetector or photosensor, a device that detects light by capturing photons
See also
