Photoreceptor/Legends

"You can take your hands away from your photoreceptors, Threepio."

- Princess Leia Organa

Photoreceptors, sometimes known as optical sensors, lenses, or simply optics, were the visual "organs" of most droids, also used by many cyborgs.

They were often sensitive to a wider visual spectrum than a typical humanoid eye. Droids could have many photoreceptors on their bodies, sometimes highly specialized.

Zam Wesell's ASN-121 assassin droid featured an infrared photoreceptor.

Notes and references
Fotorezeptor