To provide a finder device capable of contributing to the miniaturization of the entire device by contriving the arrangement of the transmissive reflection surface of an inverting optical system and setting the focal distance of an eyepiece optical system to be short so that necessary finder magnification is secured and a finder optical system is miniaturized.
This finder device is equipped with an objective optical system forming an observed image, the inverting optical system for making the observed image formed by the objective optical system an erect normal image, and the eyepiece optical system for observing the observed image. The inverting optical system is equipped with a 1st reflection surface 54a, a 2nd reflection surface 55a and a 3rd reflection surface 55b at least on the side of the objective optical system from an observed image forming position A and the transmissive reflection surface (4th reflection surface) 56a on the side of the eyepiece optical system, then a photometry means 15 is arranged on the extension of the optical path of incident light on the 4th reflection surface and a display means within a finder 60 is provided on the extension of the optical path of reflected light from the 4th reflection surface.
SUGITA YUKIHIKO
TAKAHASHI SHINYA
KATO SHIGERU
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