Movable instrument with light emitting position indicator
US4078179A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1976 |
| Grant date | Mar 7, 1978 |
| Priority date | — |
| Expiry date | Jul 30, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J5/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A movable instrument intended for utilization in detecting a difference which is capable of being optically detected between adjacent locations can be constructed so as to include an optical sensor for producing an output which is proportional to the difference between various locations and an illumination source operatively connected to the optical sensor for providing a level of brightness which is proportional to the output of the optical sensor. Such an instrument is preferably a device which is used in determining the temperature of a surface. When the invention is utilized in conjunction with such an instrument the apparent intensity of the light emitted from the illumination source provides a convenient analog indicator facilitating the instrument being pointed at either the hottest or coldest portion of the surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.