What are Optical Key Switches?
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Description
The optical switch is a relatively new type of keyboard switch that promises faster response times than ever before. How do they work, and what else can they do? lynda.com message: Sign up for your 10-day FREE trial at lynda.com Follow: twitter.com Join the community: linustechtips.com
Optical key switches represent a fusion of traditional mechanical keyboard technology with infrared sensing to detect keystrokes. The video explains that there are two main varieties currently available: light strike switches, also known as LK switches, which use a mechanical shaft to block an infrared beam until a press displaces it, allowing for faster keystroke registration than typical mechanical keyboards. The presenter notes that this can reduce actuation travel to about 1.5 millimeters, which translates to potentially much faster response times for gaming, with claimed sub-millisecond responses in some cases. The second type, Flaretech, uses an infrared sensor oriented toward the switch to measure how far the key is pressed, enabling analog input rather than simple on/off signaling. The possibility of true analog control is highlighted with examples like smoother throttle in driving games, where pressing deeper could modulate speed more precisely. The video also emphasizes practicality improvements such as replaceability, since neither type needs to be soldered to the PCB, and discusses how these technologies could integrate with existing keyboard bases or plates. Finally, the video foresees broader adoption by major peripheral brands and points viewers toward learning resources for upskilling in this cutting-edge hardware space.
Topics · hardware · keyboard-technology · input-devices · technology-trends
Questions answered
- What are the two main types of optical switches described, and how do they differ in operation?
- The two main types are light strike LK switches, which use a mechanical shaft to block an infrared beam that is released when pressed, and Flaretech switches, which detect the depth of press with an infrared sensor to enable analog input.
- What advantages do optical switches offer for gaming compared to traditional mechanical switches?
- Optical switches can provide faster actuation due to reduced travel distance and faster signal timing, with the LK type offering very quick keystroke registration and Flaretech enabling potential analog control for more nuanced input.
- Are optical switches easily replaceable in keyboards, and can they be integrated with existing keyboard designs?
- Yes, both switch types are designed to be replaceable without soldering to the PCB, and the Flaretech type does not require a physical connection to the switch, allowing flexible integration with different keyboard bases.