Solid state variable direction of view endoscope
US8992423B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2014 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | Jun 23, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B23/2484
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An endoscope with a wide angle lens that comprises an optical axis that is angularly offset from a longitudinal axis of the endoscope such that the optical axis resides at an angle greater than zero degrees to the longitudinal axis. The wide angle lens system simultaneously gathers an endoscopic image field, the endoscopic image field at least spanning the longitudinal axis and an angle greater than ninety degrees to the longitudinal axis. The endoscope includes a transmission system with a lens system having f-sin(theta) distortion or substantially f-sin(theta) distortion that distributes the angle of incidence of the light rays gathered from the endoscopic field of view on to the image surface area in order to even out the information density across the surface area of the imager.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.