Brightness measuring apparatus for providing adequate object bri

Details Brightness measuring apparatus for providing adequate object bri Brightness measuring apparatus for providing adequate object bri

1990-04-18

1991-01-08

Perkey, W. B.

354420, 354432, G03B 1505

Patent

active

049840061

ABSTRACT:
The brightness measuring apparatus according to this invention comprises a plurality of light receiving elements for respectively receive light from a plurality of areas in a photographic range and output values corresponding to the areas based on the amounts of light received, and judges whether or not the object is under rear light conditions based on the outputted values and the value of rear light detection level which is decided based on focal length of a photographing lens, image magnification, object distance, or brightness of background.

REFERENCES:
patent: 4550996 (1985-11-01), Taniguchi et al.
patent: 4558939 (1985-12-01), Taniguchi et al.
patent: 4664495 (1987-05-01), Alyfuku et al.
patent: 4690536 (1987-09-01), Nakai et al.
patent: 4821074 (1989-04-01), Nakai et al.
patent: 4862206 (1989-08-01), Ootsuka et al.

Affiliated with

Also associated with

Rating

Brightness measuring apparatus for providing adequate object bri does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Brightness measuring apparatus for providing adequate object bri, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Brightness measuring apparatus for providing adequate object bri will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-938092