| 摘要 |
PROBLEM TO BE SOLVED: To perform field switching display by moving a hologram within a finder which displays a field frame by utilizing incident light on the finder and the hologram without necessitating plural light sources. SOLUTION: This device is equipped with the hologram 5 provided in the optical path of a finder optical system through which subject luminous flux passes and which is capable of controlling the direction of light by reflecting specified wavelength to recorded interference fringe, and a mask provided in the optical path of the finder optical system and disposed on a lens surface arranged nearer to an emitting surface side than the hologram 5. By reflecting the specified wavelength of the luminous flux of the mask irradiated with the light made incident on the optical path of the finder optical system by the hologram 5, a selected field display pattern is displayed in the field of the finder optical system.
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