Endoscope
US4682219A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 12, 1986 |
| Grant date | Jul 21, 1987 |
| Priority date | — |
| Expiry date | Aug 12, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/555
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An endoscope includes in the viewing head of its insertable section into a cavity of a living body an image sensor for generating a video signal which in turn is transmitted to a television display to be visualized thereon as a television picture. The image sensor with a shape such as a plate is located in a plane containing the longitudinal center line of the viewing head. In the present endoscope, a prism to be cemented to the image sensor is shielded in the periphery thereof by a light shielding material except for an image pick-up light path which is so positioned as to face the image area of the image sensor, whereby any lights other than a light contributing to forming an image are prevented from entering the image sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.