Optical apparatus for detecting a focusing state

Details Optical apparatus for detecting a focusing state Optical apparatus for detecting a focusing state

1989-12-26

1991-07-30

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

369 4423, 369 4424, G01J 120

Patent

active

050361856

ABSTRACT:
A light detecting apparatus including a portion for receiving light with a predetermined light pattern, a first element for extracting part of the received light in reference to the light pattern, a second element for reshaping the light pattern of the received light and a photo-detecting element on which the received light is projected.

REFERENCES:
patent: 4023033 (1977-05-01), Bricot et al.
patent: 4079248 (1978-03-01), Lehureau et al.
patent: 4441175 (1984-04-01), Shuman
patent: 4604739 (1986-08-01), Cohen
patent: 4709139 (1987-11-01), Nakamura et al.
patent: 4731527 (1988-03-01), Nomura et al.
patent: 4812638 (1989-03-01), Ogata et al.
patent: 4816665 (1989-03-01), Hsu

Affiliated with

Also associated with

Rating

Optical apparatus for detecting a focusing state does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical apparatus for detecting a focusing state, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical apparatus for detecting a focusing state will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1543437