Light guide mechanism for guiding a light to an illuminance sensor
US7884314B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2008 |
| Grant date | Feb 8, 2011 |
| Priority date | — |
| Expiry date | Mar 23, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J1/0422
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A light guide mechanism for an illuminance sensor includes: a lighting window configured to pass through an external light; the illuminance sensor configured to detect an illuminance of the light passed through the lighting window; and a light-blocking part provided between the lighting window and the illuminance sensor and configured to block a light other than the light passed through the lighting window. The light-blocking part has an inner surface inclined with respect to a line perpendicular to a light-receiving surface of the illuminance sensor. A direction of inclination of the inner surface is such that the inner surface faces the light-receiving surface of the illuminance sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.