1. Of or relating to sight; visual: an optical defect.
2. Designed to assist sight: optical instruments.
3. Of or relating to optics.
4. Relating to or using visible light: optical astronomy.
5. Using light-sensitive devices.
having to do with the eye
optical power means living
optical density is the amount of light
sight
optics deals with the behavior of light and optical deals with sight and the interaction of visible light
Optical drive
"Optical" means related to light, often to visible light. So, a system that works with light.
It depends what kind of optical devices you mean, For instance Meiji Techno manufactures microscopes.
Target Identification System, Electro-Optical.
Japan Optical Company
In OP art OP means Optical Illusion.
It could mean: RAM Optical Instrument Rules of Interaction (Gaming) Read Only Information
Optical signals (usually on the infrared band) optical s ignals generally mean visible light... so it mainly uses visible light.