Optical Key Switch Keyboard

By Xah Lee. Date: . Last updated: .

Optical key switch became popular around 2016.

light strike optical switch 4bcc8
light strike optical switch
infra red optical switch 27658
infra red optical switch
Tosoro optical switch

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

Keyboards with Optical switch on the market are actually not more expensive then Cherry MX.

[see Keyboard Key Switch Mechanisms]

Keyboards with Optical Switche

Bloody LK Optical Key Switches Keyboard

Bloody B840 keyboard 19317
Bloody B840 keyboard Buy at amazon


Jan 6, 2017
Asian Reviews
bloody b830 optical keyboard 192a5
Buy at amazon

Bloody LK Optic 2 switch

“LK Optic 2” refers to a clicky switch from Bloody. In English, Bloody still call it “LK Optic” (and refer to Light Strike Technology, of which “LK” is an abbreviation, instead of Light Strike 2 Technology) while in Chinese it is referred to as “LK二代光轴” (LK II optical switch), “LK2光轴” (LK2 optical switch), “LK光轴” (LK optical switch) or simply “光轴” (optical switch).

The switch is unusual in having a design that is totally new, resembling no other known switch. The internal mechanism is of a curious and unclear design, and one that is described as clicky and offering a “machine gun” sound.

“Key response” is given as 0.2 ms, citing an 18–30 ms “delay” due to contact bounce in metal contact switches. Contact bounce is typically given by manufacturers as 5 ms maximum, and it is not clear where the 18–30 ms comes from.

It is likely that the switches accept Cherry MX mount keycaps, but this is not confirmed.


here's how it actually looks like:

bloody light strike optical switch cec08-s1102x735
bloody light strike optical switch. Stem is CHERRY MX compatible. [image source reddit]

Tesoro Excalibur SE Keyboard

Tesoro Excalibur SE keyboard 10995
Tesoro Excalibur SE Keyboard Buy at amazon
Optical Switches - Are They Worth It? Tesoro Excalibur SE
May 9, 2017
Tech Tesseract

Key Switch Topic