Optical sensing device with rotating type shading assembly
US8184278B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 2010 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Nov 24, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J1/0271
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical sensing device includes a shell, at least one light emitting member, a rotating type shading assembly and at least one optical sensing member. The shell is formed with a black-body condition space having a light emitting chamber, a shading chamber and at least one optical sensing chamber. The light emitting member projects a light beam. The rotating type shading assembly includes a pivot and a shading member. The shading member is pivotally connected to the pivot in the shading chamber, and has a weight center offset from the pivot center. When the optical sensing device is tilted, the shading member is rotated to make the weight center located in a lowering azimuth with respect to the pivot. The optical sensing member is arranged in the optical sensing chamber, and senses the light beam to accordingly send out a sensing signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.