Photoreceptor

Photoreceptors, also known as visual sensors, was a technical name for the optical sensors of a droid. They were the equivalent to an eye.^[1] Numbers of photoreceptors could vary depending on the size and model of a droid. For instance, R2-D2 had one, while EV-9D9 had three. Many droids, like C-3PO, had two.^[3] Some could have them in different areas. For instance, General Grievous' MagnaGuards had a built-in photoreceptor in their torso to allow them to fight without their heads.^[4]

Appearances

This in-universe list is incomplete. You can help Wookieepedia by expanding it. "The Queen's Bloom" — The High Republic: Tales of Light and Life (and audiobook) The High Republic: Quest for the Hidden City (and audiobook) "Tales of Enlightenment: No Such Thing as a Bad Customer" — Star Wars Insider 217–218 (reprinted in Star Wars Insider: The High Republic: Tales of Enlightenment) The High Republic: Cataclysm (and audiobook) The High Republic: Light of the Jedi (and audiobook) The High Republic: A Test of Courage (and audiobook) "Starlight: First Duty" — Star Wars Insider 201–202 The High Republic: Race to Crashpoint Tower (and audiobook) The High Republic: Mission to Disaster (and audiobook) The High Republic: Tears of the Nameless (and audiobook) The High Republic: Trials of the Jedi (and audiobook) The High Republic Adventures (2023) 16 The High Republic – Fear of the Jedi 3 "Tales from the Occlusion Zone: Out with a Bang" — Star Wars Insider 231 The High Republic – Fear of the Jedi 5 The High Republic Adventures (2023) 17 The High Republic: A Valiant Vow (and audiobook) The High Republic Adventures (2023) 18 The High Republic Adventures (2023) 20 The High Republic – The Finale 1 Star Wars Eclipse The Acolyte: The Crystal Crown Star Wars: The Acolyte — "Lost / Found" Star Wars: Tales of the Jedi — "Justice" Padawan (and audiobook) Jedi Knights 2 Darth Maul (2017) 2 Darth Maul (2017) 4 Star Wars: Episode I The Phantom Menace Queen's Shadow (and audiobook) Star Wars: Episode II Attack of the Clones "Galactic Tales: Inheritance" — Star Wars Insider 211 "Galactic Tales: From The Shadows Come The Kran" — Star Wars Insider 212 Star Wars: The Clone Wars film Star Wars: The Clone Wars — "Destroy Malevolence" Star Wars: The Clone Wars — "Bombad Jedi" Star Wars: The Clone Wars — "Cloak of Darkness" (In flashback(s)) Choose Your Destiny: A Clone Trooper Mission Star Wars: The Clone Wars — "Trespass" Star Wars: The Clone Wars — "Blue Shadow Virus" Star Wars: The Clone Wars — "Senate Spy" Star Wars: The Clone Wars — "Lightsaber Lost" (In flashback(s)) Star Wars: The Clone Wars — "Voyage of Temptation" Star Wars: The Clone Wars — "Hostage Crisis" "Hostage Crisis" — The Clone Wars: Stories of Light and Dark (and audiobook) Star Wars: Episode III Revenge of the Sith Master of Evil Star Wars: The Bad Batch — "Rampage" Adventures in Wild Space: The Escape (and audiobook) Adventures in Wild Space: The Cold (and audiobook) Servants of the Empire: Edge of the Galaxy Star Wars: Andor — "Daughter of Ferrix" Rise of the Rebels The Rebellion Begins Servants of the Empire: Rebel in the Ranks (Mentioned only) Servants of the Empire: Imperial Justice Servants of the Empire: The Secret Academy Battle to the End Thrawn: Alliances (and audiobook) "An Old Hope" — Life Day Treasury Rogue One: A Star Wars Story Star Wars: Episode IV A New Hope (First appearance) Star Wars: A New Hope junior novelization Escape from Darth Vader "The Red One" — From a Certain Point of View (and audiobook) Battlefront II: Inferno Squad (and audiobook) Smuggler's Run: A Han Solo & Chewbacca Adventure (and audiobook) The Weapon of a Jedi: A Luke Skywalker Adventure (and audiobook) Star Wars (2015) 26 Doctor Aphra (2016) 30 (Indirect mention only) Choose Your Destiny: A Smuggler Mission Star Wars: Episode V The Empire Strikes Back "Eyes of the Empire" — From a Certain Point of View: The Empire Strikes Back (and audiobook) "Faith in an Old Friend" — From a Certain Point of View: The Empire Strikes Back (and audiobook) "Wait for It" — From a Certain Point of View: The Empire Strikes Back (and audiobook) Bounty Hunters 3 Star Wars Outlaws Darth Vader (2020) 36 Dark Droids 2 Doctor Aphra (2020) 39 Darth Vader (2020) 41 Dark Droids 5 Star Wars (2020) 41 Moving Target: A Princess Leia Adventure (and audiobook) "Trooper Trouble" — From a Certain Point of View: Return of the Jedi (and audiobook) (Indirect mention only) Star Wars: Episode VI Return of the Jedi Star Wars: Return of the Jedi junior novelization Return of the Jedi: Beware the Power of the Dark Side! (and audiobook) Return of the Jedi – Jabba's Palace 1 "Satisfaction" — From a Certain Point of View: Return of the Jedi (and audiobook) "No Contingency" — From a Certain Point of View: Return of the Jedi (and audiobook) The Princess and the Scoundrel (and audiobook) Alphabet Squadron (and audiobook) Shadow Fall: An Alphabet Squadron Novel (and audiobook) Victory's Price: An Alphabet Squadron Novel (and audiobook) Doctor Aphra – Chaos Agent 1 Doctor Aphra – Chaos Agent 2 Star Wars (2025) 3 Last Shot (and audiobook) Hunters: Battle for the Arena (and audiobook) The Mandalorian Junior Novel (and audiobook) Star Wars: The Book of Boba Fett — "Chapter 6: From the Desert Comes a Stranger" Star Wars: Skeleton Crew — "The Real Good Guys" The Legends of Luke Skywalker (and audiobook) "High Noon on Jakku" (reprinted in Tales from a Galaxy Far, Far Away: Aliens: Volume I) "Bakurat" — Dark Legends (In flashback(s)) "The Crimson Corsair and the Lost Treasure of Count Dooku" (reprinted in Tales from a Galaxy Far, Far Away: Aliens: Volume I) Hyperspace Stories—Codebreaker 2 Hyperspace Stories—Codebreaker 3 Star Wars: The Force Awakens: A Junior Novel (and audiobook) Join the Resistance: Attack on Starkiller Base (and audiobook) (First identified as ocular sensor) Star Wars Adventures Ashcan (In flashback(s)) Star Wars: The Last Jedi: Expanded Edition (and audiobook) Star Wars: The Last Jedi: A Junior Novel (and audiobook) Star Wars: Droid Repair Bay Legacy of Vader 2 (In flashback(s)) Star Wars Galactic Pals — "Tauntaun" Star Wars Galactic Pals — "Rancor" Star Wars Galactic Pals — "Porgs" Star Wars Galactic Pals — "Ortolan" Star Wars Galactic Pals — "Gungan" Star Wars Galactic Pals — "Loth-Cat" "Tales from Wild Space: Alone in the Dark" — Star Wars Adventures (2017) 26 The Jaws of Jakku (In flashback(s)) Star Wars: The Rise of Skywalker: A Junior Novel (and audiobook) The Last Order Ghosts of Dathomir

Non-canon appearances

This in-universe list is incomplete. You can help Wookieepedia by expanding it.

• LEGO Star Wars: The Freemaker Adventures — "The Maker of Zoh"
• LEGO Star Wars: The Freemaker Adventures — "Return of the Kyber Saber"
• LEGO Star Wars: The Freemaker Adventures — "Trouble on Tibalt"
• LEGO Star Wars: The Freemaker Adventures — "The Tower of Alistan Nor"
• LEGO Star Wars: The Freemaker Adventures — "The Embersteel Blade"
• LEGO Star Wars: The Freemaker Adventures — "The Storms of Taul"
• LEGO Star Wars: The Freemaker Adventures — "Return to the Wheel"
• LEGO Star Wars: The Freemaker Adventures — "The Lost Crystals of Qalydon"
• LEGO Star Wars: The Freemaker Adventures — "The Pit and the Pinnacle"
• LEGO Star Wars: The Freemaker Adventures — "Flight of the Arrowhead"
• LEGO Star Wars: The Freemaker Adventures — "A Perilous Rescue"
• LEGO Star Wars: The Freemaker Adventures — "Escape from Coruscant"
• LEGO Star Wars: The Freemaker Adventures — "Free Fall"
• Star Wars: Visions — "Sith"

Sources

Notes and references