Indication device in viewfinder for a single lens reflex camera

Details Indication device in viewfinder for a single lens reflex camera Indication device in viewfinder for a single lens reflex camera

1976-11-15

1978-07-04

O'Connor, Edna M.

354 54, 354289, G03B 1302, G03B 1720

Patent

active

040991903

ABSTRACT:
The disclosure describes an indication device in viewfinder for a single lens reflex camera having an exchangeable viewfinder optical system. To improve the exchangeability of the components of the viewfinder optical system, informative members necessary for indicating the information of shutter speed, diaphragm aperture and the like are built in the camera body itself. Among the components of the viewfinder optical system, the condenser lens member and the focusing screen member is enclosed with a frame member to form an unitary viewfinder screen unit. Making use of the space in the unit, a necessary reflective member is fixed to the underside of the condenser lens member. A lighting window is formed on the frame member to direct the information coming from the informative members to the reflective member.

REFERENCES:
patent: 3387530 (1968-06-01), Eberty
patent: 3996593 (1976-12-01), Uno et al.
patent: 4015576 (1977-04-01), Nomura

Affiliated with

Also associated with

Rating

Indication device in viewfinder for a single lens reflex 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 Indication device in viewfinder for a single lens reflex camera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Indication device in viewfinder for a single lens reflex camera will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-280831