Device for the automatic focussing of optical instruments with c

Details Device for the automatic focussing of optical instruments with c Device for the automatic focussing of optical instruments with c

1984-10-31

1987-08-11

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

356 4, G01J 120

Patent

active

046863605

ABSTRACT:
For the automatic focussing of an optical instrument on an object, a measng diaphragm is inserted into the illuminating radiation path, which diaphragm is to be projected onto the object plane and focus plane during focussing. This intermediate image of the measuring diaphragm is projected via a detector diaphragm which is complementary to the measuring diaphragm, onto a detector, the output signal of which is a scale for the quality of the focussing and which acts on a focussing drive in the sense of optimum focussing via a control device.

REFERENCES:
patent: 3721827 (1973-03-01), Reinheimer
patent: 3967110 (1976-06-01), Rogers et al.
patent: 4153834 (1979-05-01), Hayamizu
patent: 4460258 (1984-07-01), Fukuhara

Affiliated with

Also associated with

Rating

Device for the automatic focussing of optical instruments with c does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device for the automatic focussing of optical instruments with c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for the automatic focussing of optical instruments with c will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-403992