Adapter for coupling a camera with a viewing device
US4264167A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 4, 1980 |
| Grant date | Apr 28, 1981 |
| Priority date | — |
| Expiry date | Feb 4, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B29/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An adapter by which a self-contained camera having an objective lens can be optically and mechanically coupled with a well-known endoscope of the type having an especially designed eyepiece adapted to be changed between a viewing mode and a photographic mode, in which the eyepiece operates as an objective lens for forming an object image in a plane located a predetermined distance behind the eyepiece. The adapter of the invention is structured to mechanically and optically couple the self-contained camera to the endoscope and to change the endoscope eyepiece from its viewing mode to its photographic mode. Provided in the adapter is a negative lens which optically nullifies the objective lens function of the endoscope eyepiece of collimating convergent image forming rays therefrom so that the self-contained camera can be used to photograph the image formed by the endoscope with the camera objective lens focused at infinity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.