Albada type inverted galilean finder for camera

Details Albada type inverted galilean finder for camera Albada type inverted galilean finder for camera

1994-09-13

1996-12-24

Sugarman, Scott J.

Optical: systems and elements

Lens

Including a nonspherical surface

359646, 396373, 396386, G02B 1318, G03B 1302, G03B 1308

Patent

active

055878440

ABSTRACT:
An Albada type inverted Galilean finder for a camera has an objective lens of negative power having a concave surface on a pupil side opposite an object side which is provided thereon with a half mirror coating and an eyepiece having a convex surface on the pupil side and a surface on the object side which is provided thereon with a framing marking defining an area for framing.

REFERENCES:
patent: 4429978 (1984-02-01), Ikari
patent: 4650293 (1987-03-01), Kimura et al.
patent: 4828374 (1989-05-01), Ishisaka et al.
patent: 5353158 (1994-10-01), Matsuo

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