Optical Key Switch

What is Optical Key Switch

Optical Key Switch uses a light beam to control on/off electricity status. Typically a infra-red light beam.

Optical key switch became popular around 2016, due to the Bloody B840 Optical Switch Keyboard using the “Bloody LK Optic 2 switch”.

• Bloody B840 LK

Advantage of Optical Switch

Optical switch is great because it does not need metal contact. Meaning, no wear, last longer, and easier to be water resistant.

Modern Optical Switch Types

Optical Key Switch keyboards

There are a lot. Here's a few example.

• Bloody B840 LK

• Keychron Keyboard

• Cleave Keyboard

Old Optical Key Switch Keyboards

• Teletype Optical Switch Keyboard
• Invac PK-200 keyboard. 1966