which type of lens is used in scanner
Answers
Answered by
0
Answer:
A lamp is used to illuminate the document. The lamp in newer scanners is either a cold cathode fluorescent lamp (CCFL) or a xenon lamp, while older scanners may have a standard fluorescent lamp. The entire mechanism (mirrors, lens, filter and CCD array) make up the scan head.
Scanning is a reading technique to be used when you want to find specific information quickly. In scanning you have a question in your mind and you read a passage only to find the answer, ignoring unrelated information
Similar questions