发明授权
- 专利标题: Shutter speed display device for a camera
- 专利标题(中): 相机快门速度显示装置
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申请号: US141490申请日: 1980-04-18
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公开(公告)号: US4821056A公开(公告)日: 1989-04-11
- 发明人: Masaharu Kawamura , Nobuaki Sakurada , Hiroyasu Murakami , Nobuhiki Shinoda , Tadashi Ito
- 申请人: Masaharu Kawamura , Nobuaki Sakurada , Hiroyasu Murakami , Nobuhiki Shinoda , Tadashi Ito
- 申请人地址: JPX Tokyo
- 专利权人: Canon Kabushiki Kaisha
- 当前专利权人: Canon Kabushiki Kaisha
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX52-25223 19770308
- 主分类号: G03B17/18
- IPC分类号: G03B17/18 ; G03B7/093 ; G03B17/20
摘要:
A digital display system connected to an exposure indicator in a camera to provide a digital display representative of the exposure value in shutter speed by an array of numerical indicators of the block number eight type. When the numerical value of shutter speed is equal to or larger than one second, the indicator which is directly to the right of the least significant digit is utilized to display an indicium representing a "second" unit as is usual in digital stop watch art by driving a pair of upper-positioned parallel segments in the "FIG. eight" pattern to be lit serially from the least significant digit.