Holographic optical device, camera finder indication, and...

Details Holographic optical device, camera finder indication, and... Holographic optical device, camera finder indication, and...

2008-09-16

2008-09-16

Perkey, W. B. (Department: 2862)

Photography

Having camera indicator

Nonmechanical visual display

C396S296000, C359S013000, C349S011000

Reexamination Certificate

active

10537657

ABSTRACT:
The present invention relates to a holographic optical element (8), a viewfinder display (5, 6, 7) of a camera (1) using thereof, and a camera (1). The purpose of the present invention is to show various superimposed displays for various information with securing a bright viewfinder image. In the holographic optical element according to the present invention, a liquid crystal (13) whose orientation is changeable and a liquid crystal (14) whose orientation is fixed are arranged alternately with a striped shape between the transparent members (12a) (12b) on which the transparent electrodes (11a) (11b) are formed facing with each other.

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