View finder for reflex camera

Details View finder for reflex camera View finder for reflex camera

1975-08-04

1977-05-31

Hix, L. T.

354155, 354199, 354224, G03B 1308

Patent

active

040273270

ABSTRACT:
A holographic lens which functions to converge light passing therethrough is located on a plane equivalent to the focal plane of a taking lens of a reflex camera. An image of the object is formed on the holographic lens and viewed in enlarged scale through an eyepiece. The light passing through the holographic lens is converged to the eyepiece so that a uniformly bright image of the object formed on the holographic lens may be viewed through the eyepiece.

REFERENCES:
patent: 3149547 (1964-09-01), Jurenz
patent: 3218948 (1965-11-01), Kuppenbender
patent: 3500736 (1970-03-01), Ewald
patent: 3609027 (1971-09-01), Lowenthal
patent: 3630134 (1971-12-01), Nakamura
patent: 3807829 (1974-04-01), Close
patent: 3915548 (1975-10-01), Opittek et al.

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