| 摘要 |
PURPOSE:To change the visibility of a finder stepwise, by shunting a lens effective for adjusting the visibility, from an optical system, in a finder eyepiece system of a camera. CONSTITUTION:In a standard state that an operating member 25 indicates ''0'' of an index 26, both lenses 6, 7 of an eyepiece optical system are positioned in the optical path. On the lenses, pins 20, 21 are provided, and they are pushed by pressing end parts 22, 23 of a pushing plate 24. Also, moving tables 10, 11 on which the lenses have been placed are fitted into guide rods 12, 13, and they are usually brought into contact with stoppers 14, 17 by tension springs 18, 19. When the operating member 25 is operated to the side of ''+'' or the side of ''-'', the lens 6 or 7 is shunted to the outside of the optical path, and the visibility is changed stepwise. Since it is moved in the vertical direction with respect to the optical axis, it can be incorporated in a finder having no sufficient space. |
