Real image type finder

Details Real image type finder Real image type finder

1992-10-15

1994-12-27

Blankenship, Howard B.

Optical: systems and elements

Prism

With reflecting surface

359432, 359740, G03B 1302

Patent

active

053769848

ABSTRACT:
A real image type finder is provided comprising an objective optical system, an eye piece optical system, and an aperture which is arranged in the objective optical system and that is substantially conjugate with an exit pupil. The finder permits a user to adjust the aperture diameter and its position simply by manipulating the aperture for adjustment.

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Camera Viewfinder Using Titled Concave Mirror Erecting Elements, D. DeJager, SPIE vol. 237, 1980, International Lens Design Conference (OSA), pp. 292-298.
English Translation of Japanese Patent Publication 61-156019.
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English language abstract of Japanese Patent Publication JP-1129225.

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