Light source aiming system and method for hand-held temperature measuring unit
US5823678A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1996 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Dec 11, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S33/21
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and apparatus are provided for visibly outlining the energy zone to be measured by a radiometer. The method comprises the steps of providing a laser sighting device on the radiometer adapted to emit at last one laser beam against a surface whose temperature is to be measured and positioning said laser beam about the energy zone to outline said energy zone. The apparatus comprises a laser sighting device adapted to emit at least one laser beam against the surface and means to position said laser beam about the energy zone to outline said energy zone. The laser beam may be rotated about the periphery of the energy zone. In another embodiment, a pair of laser beams are projected on opposite sides of the energy zone. The laser beam may be further pulsed on and off in a synchronised manner so as to cause a series of intermittent lines to outline the energy zone. Such an embodiment improves the efficiency of the laser and results in a brighter laser beam being projected. In yet another embodiment, a primary laser beam is passed through or over a diffraction grating so as to be formed into a plurality of secondary beams which form, where they strike the target, a pattern which defi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.