Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1989-12-01
1991-08-27
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
2191218, 250225, H01J 4014
Patent
active
050435663
ABSTRACT:
A monitor mechanism for use with a scanning optical apparatus in which the direction of polarization is utilized to separate a source laser light beam into a pattern drawing and a monitor beamlet and to synthesize them again into a single after passing through a scanning lens and beam deflector. The two beamlets can thus be controlled so as to project towards the deflector and scanning lens in the same direction, which is effective in reducing the offset between the pattern drawing and monitor beams that may occur on account of such factors as variations in lens performance.
REFERENCES:
patent: 4695698 (1987-09-01), Mayor et al.
Andoh Hiroaki
Ikeda Yasushi
Iwama Masatoshi
Kakimoto Mitsuo
Matsui Yuji
Asahi Kogaku Kogyo Kabushiki Kaisha
Nelms David C.
LandOfFree
Monitor mechanism for use with a scanning optical apparatus with does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Monitor mechanism for use with a scanning optical apparatus with, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Monitor mechanism for use with a scanning optical apparatus with will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1416052