Light source device for collimator
US10332647B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2017 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Nov 2, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N23/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided is a light source device for a collimator capable of improving an illuminance ratio in an inside of a visible light's radiation field to an outside thereof. The light source device for a collimator includes an LED with a light emitting portion that irradiates visible light and a visible light guide member. The visible light guide member may have a main body, a spacer, and a base. In the main body, a through-hole of a truncated conical shape is formed. The through-hole of a truncated cone shape forms a first opening at a first surface of the main body on a side of the LED and a second opening a second surface of the main body opposite to the first surface. The first opening may be smaller than the second opening. The conical surface of the through-hole having the truncated conical shape is formed as a mirror surface which reflects the visible light irradiated from the LED with high reflectance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.