| 摘要 |
An optical apparatus is provided with an eyepiece, a focusing screen onto which an image is projected, a reflecting device for reflecting the light from the focusing screen to thereby cause it to enter the eyepiece in order to show the image, an illuminating device for illuminating an eye, an imaging optical system for receiving the light from the eye through the eyepiece and a certain portion of the reflecting device, and forming the image of the eye by the light from the eye, and a photoelectric converter for receiving the image of the eye. The reflecting device comprises a hollow optical part, and the light from the eye passes through the hollow portion and the mirror portion of the optical part.
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