Camera, such as an APS camera, having a single-piece, rotatable viewfinder and light-pipe mask for format selection
US6151452A · kind A · utility
5Cited by
42References
49Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1999 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Apr 14, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2219/045
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera for making pseudo-photographic images has a series of viewfinder masks that define various fields of vision and a series of light-pipe masks that selectively block the passage of light through two light pipes disposed within the camera. The selective blockage causes various patterns of encodement marks to be placed on the edge of the camera's photographic film. The masks are rotatably disposed around the optical axis of the camera's picture-taking lens. The masks are manually rotated by the camera user via a lever and gear assembly disposed on the camera's front cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.