Structure of the distal end portion of an endoscope
US5427087A · kind A · utility
320Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1991 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Nov 26, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B23/2484
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The distal end body of an endoscope accommodates an objective optical system, and a solid-state image pick-up element having a light receiving surface is disposed axially in parallel with the center axis of the objective optical system. A prism is disposed such that the optical axis of the objective optical system is perpendicular to the center axis of the light receiving surface. An object is imaged on the light receiving surface of the solid-state image pick-up element, through the objective optical system. The prism is shaped like a trapezoid in cross-section to minimize the size of the endoscope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.