Optical imaging arrangement comprising an opto-electronic focuss

Details Optical imaging arrangement comprising an opto-electronic focuss Optical imaging arrangement comprising an opto-electronic focuss

1988-02-09

1989-09-12

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

356 4, G01J 120, G01J 134

Patent

active

048662623

ABSTRACT:
An optical imaging arrangement is described which comprises an opto-electronic focussing-error detection system (1, 2, 3, 4, 5, 6, 12, 13, 14, 18, 19, 20, 21) for determining a deviation between the image plane (P.sub.L) of the imaging system (L) and a second plane (P.sub.S) in which the image is to be formed. The image plane (P.sub.F) of the focussing-error detection system is adjustable, for example by means of a pivotable plane-parallel plate (15), so that the zero point of the focussing-error signal (S.sub.f) is adjustable.

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patent: 4631396 (1986-12-01), Utsumi
patent: 4668677 (1987-05-01), Tanaka

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