Patent ID: 7426343
Filing Date: 2008-09-16
Classification: G02F,G03B

Abstract:
1. A viewfinder display of a camera displaying given information superimposed with an object image, the viewfinder display comprising: a first transparent member which has a board shape and on which object light is incident; a second transparent member which has a board shape and is separately disposed from the first transparent member facing the first transparent member, and from which the object light incident on the first transparent member leaves; transparent electrodes formed on the first transparent member and the second transparent member, respectively, and facing each other; a first liquid crystal whose orientation is changeable; and a second liquid crystal whose orientation is fixed; the first liquid crystal and the second liquid crystal being arranged alternately in a first direction with a striped shape between the transparent members on which the transparent electrodes are formed facing each other, wherein the viewfinder display has an incident surface on which light crossing a direction of an optical path of the object light is incident, and the incident surface crosses an exit surface from which the object light leaves the second transparent member, and crosses the first direction, and wherein the light incident on the incident surface is diffracted by the first liquid crystal and the second liquid crystal and leaves from the exit surface.