View finder

Photography – Exposure control circuit – Viewfinder light compensation

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

396296, 396373, G03B 1310

Patent

active

060028874

ABSTRACT:
In a view finder having an objective lens, an indicator is provided in the vicinity of an image forming position of the objective lens. The indicator includes a liquid crystal cell having a pair of spaced first and second glass substrates with transparent electrodes. A transparent macromolecular substance having a liquid crystal dispersed therein is enclosed in the space between the first and second glass substrates. An eyepiece is provided through which an image formed by the objective lens can be viewed. Light sources are provided along side surfaces of the indicator to emit and make light incident upon the indicator.

REFERENCES:
patent: 4142786 (1979-03-01), Suzuki et al.
patent: 4294529 (1981-10-01), Sato et al.
patent: 4374612 (1983-02-01), Matsumura et al.
patent: 4555170 (1985-11-01), Wakui et al.
patent: 4560264 (1985-12-01), Kitazawa et al.
patent: 4829492 (1989-05-01), Choi et al.
patent: 4921342 (1990-05-01), Pringle
patent: 5066968 (1991-11-01), Suzuki et al.
patent: 5121232 (1992-06-01), Miyadera
patent: 5299037 (1994-03-01), Sakata
patent: 5341231 (1994-08-01), Yamamoto et al.
patent: 5349416 (1994-09-01), Hara
patent: 5426526 (1995-06-01), Yamamoto et al.
patent: 5442523 (1995-08-01), Kashima et al.
patent: 5517278 (1996-05-01), Takahara et al.
patent: 5537184 (1996-07-01), Hasushita et al.
patent: 5572283 (1996-11-01), Wakabayashi et al.
patent: 5603068 (1997-02-01), Aihara
patent: 5666576 (1997-09-01), Ohtake
patent: 5727245 (1998-03-01), Asakura et al.
Electro-Optical Devices and Systems by Karim, Mohammad A., PWS-KENT Publishing Co., pp. 273-278, 294-303, 1990.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

View finder does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with View finder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and View finder will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-872093

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.