发明授权
- 专利标题: Image projecting apparatus furnished with image rotating mechanism
- 专利标题(中): 图像投影设备配有图像旋转机构
-
申请号: US713680申请日: 1991-06-11
-
公开(公告)号: US5160950A公开(公告)日: 1992-11-03
- 发明人: Koji Niizawa
- 申请人: Koji Niizawa
- 申请人地址: JPX Osaka
- 专利权人: Minolta Camera Kabushiki Kaisha
- 当前专利权人: Minolta Camera Kabushiki Kaisha
- 当前专利权人地址: JPX Osaka
- 优先权: JPX2-154656 19900613; JPX3-107413 19910513
- 主分类号: G03B21/11
- IPC分类号: G03B21/11 ; G03B27/32
摘要:
An image projecting apparatus is disclosed which is provided with a film carrier part for retaining a microfilm, a screen for allowing an image recorded on the film to be projected thereon, and an optical image rotating mechanism disposed in a projected light path extending from a light source to the screen and adapted to rotate the image recorded on the film and consequently allow the image to be projected in a desired posture on the screen. The operator, even when the image on the film is projected in a rotated state, is enabled to move the film in a prescribed direction in accordance with the angle of the rotation of the image produced by the optical image rotating mechanism by keeping an eye on the image projected on the screen and, at the same time, manipulating a key corresponding to the direction in which the image is desired to be observed or to the direction identical to the direction in which the image is desired to be moved.
公开/授权文献
- US5896351A Recording method for optical disk drive 公开/授权日:1999-04-20
信息查询