image
Light pen is a mechanical or optical device? i don't know answer for this
Just have a guess
An optical comparator is a device that applies the principles of optics for the inspection of manufactured parts. They are used in the automotive industry.
The adjustment of the optical device to produce a clear image
There is a nice article on this optical device in wikipedia. It is better you don't suffer my transcription errors.
No, its not an optical storage device.
It is not an optical device. C D ROM or DVD are optical devices. Whereas a digital memory card is solid state device.
Light pen is a mechanical or optical device? i don't know answer for this
It is an optical device to study about the spectrum produced by the refraction phenomenon through a triangular prism or obtained by the diffraction phenomenon at the grating.
It's input I think, not that sure, but I just know that it reads data from a disc and then views them onto the computer screen. :)
magnetic storage device
CD-R
Input device
Optical equipment is any device that uses light to perform its function.
A device to measure optical refraction.
Mechanical input device
OCR, optical character reading device, OCR device...