Camera bellows of rotating-mirror framing camera without principle error
US8107809B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2009 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Jan 17, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A new camera bellows of a rotating-mirror framing camera, without principle errors such as defocusing error of imaging points, non-uniform photographic frequency and each axial chief ray of exit-pupil and the corresponding relay lens being different with a corresponding reflective optical axis, is provided. This kind of camera bellows is carried out through centers of the exit-pupil diaphragms being disposed on a cylindrical surface aligned with a first Pascal spiral line, and principal points of the relay lenses of the relay lens array and the image recording surface being disposed on cylindrical surfaces aligned with second and third Pascal spiral lines respectively. The bellows is mainly composed of a box, and an aperture diaphragm, a field lens, a rotating mirror, a relay lens array, an exit-pupil diaphragm array and a record image surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.