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A camera, television, lap top, glasses, psp, claw machine.
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If you are talking convex and concave, they both have an optical lens. Sorry if that doesn't help, but what do I know.
Optical Energy, better known as Optical Power, is the converging strength of a lens. As an example a lens with a high Optical Power will have a wider range of view but less focal distance. A lens with low Optical Power will have a longer focal distance but less range of view.
The cornea (aka lens).
A camera, television, lap top, glasses, psp, claw machine.
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LENS
Optical equipment is any device that uses light to perform its function.
optical triggering device
Just have a guess
A camera, television, lap top, glasses, psp, claw machine.
A telescope can do that, but magnification is not its purpose.
Optical mouse: Most desktop computer users today have some type of optical mouse, which uses devices that emit and sense light to detect the mouse's movement.
It is called an optical drive because the mechanism for reading and writing information is optical (light) based - it uses lasers.
Computer lens are glasses for preventing damage to the eyes due to working at a computer for long hours. Computer lens may also refer to the device that emits the laser beam in optical disk drives.