Photography – With exposure objective focusing means – focusing aid – or... – Having auxiliary illumination
Patent
1996-09-10
1998-02-24
Adams, Russell E.
Photography
With exposure objective focusing means, focusing aid, or...
Having auxiliary illumination
396271, 396373, 396384, G03B 1300
Patent
active
057219796
ABSTRACT:
A camera has a finder optical system and a range measuring optical system which are provided independent of a photographing optical system. The finder optical system includes an objective system having a positive refracting power, an image inverting optical member having a plurality of reflecting surfaces for erecting an image formed by the objective system, and an eyepiece system having a positive refracting power. At least one of the reflecting surfaces constituting the image inverting optical member is disposed as a path splitting member In the optical path of the objective system so that one of optical paths split by the path splitting member is used for the finder optical system and the other is used for the range measuring optical system. A positive refracting power is provided, as a whole, between the path splitting member and the imaging plane of the objective system, without any refracting power between the path splitting member and a range measuring element. In this way, the camera is capable of making a range measurement of a high degree of accuracy and having a compact finder optical system.
REFERENCES:
patent: 4534637 (1985-08-01), Suzuki et al.
patent: 4693582 (1987-09-01), Kawamura et al.
patent: 4707103 (1987-11-01), Ikemori et al.
patent: 4818865 (1989-04-01), Matsui et al.
patent: 4972216 (1990-11-01), Ueda et al.
patent: 5341186 (1994-08-01), Kato
Ito Kazumi
Takato Hideyasu
Adams Russell E.
Olympus Optical Co,. Ltd.
LandOfFree
Camera does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Camera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Camera will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1882570