Real image zoom viewfinder

Details Real image zoom viewfinder Real image zoom viewfinder

1991-05-13

1993-01-26

Gellner, Michael L.

354222, 354225, G03B 1314, G03B 1310, G03B 1308

Patent

active

051825929

ABSTRACT:
A real image zooming viewfinder comprising three optical units with refracting optical power and an additional moving reflective optical unit. Zooming is accomplished by moving one of the refractive optical units and the additional reflective optical unit. A parallax correction can be achieved by moving laterally a first optical unit with refractive power.

REFERENCES:
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patent: 4838668 (1989-06-01), Betensky et al.
patent: 4887109 (1989-12-01), Fujita et al.
patent: 4972216 (1990-11-01), Ueda et al.
patent: 5014078 (1991-05-01), Kudo et al.
patent: 5052787 (1991-10-01), Sugawara

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