发明授权
- 专利标题: Camera
- 专利标题(中): 相机
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申请号: US702993申请日: 1996-08-26
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公开(公告)号: US5903788A公开(公告)日: 1999-05-11
- 发明人: Hiromu Mukai , Katsuto Tanaka , Jun Ishihara , Ichiro Tsujimura
- 申请人: Hiromu Mukai , Katsuto Tanaka , Jun Ishihara , Ichiro Tsujimura
- 申请人地址: JPX Osaka
- 专利权人: Minolta Co., Ltd.
- 当前专利权人: Minolta Co., Ltd.
- 当前专利权人地址: JPX Osaka
- 优先权: JPXH5-001397 19930107
- 主分类号: G02F1/13
- IPC分类号: G02F1/13 ; G03B13/24 ; G03B17/14 ; G03B19/12 ; G03B13/02
摘要:
A subject image is formed on a focusing screen by a taking lens in a camera. The focusing screen is constituted by a liquid crystal whose light diffusion characteristic is variable. The light diffusion characteristic is varied according to an open aperture value of the taking lens which is attached to the camera.
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