Light guide with multiple rod-shaped light guide portions attached to each other having a prism surface
US11782201B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2022 |
| Grant date | Oct 10, 2023 |
| Priority date | — |
| Expiry date | Oct 27, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0038
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A light guide includes a rod-shaped first light guide portion including a prism surface including a prism to reflect internally propagating light and output the light to an outside along a lengthwise direction thereof, a rod-shaped second light guide portion including a light intake portion to take in light from a light source, and a rod-shaped intermediate light guide portion between the first light guide portion and the second light guide portion provided such that side surfaces thereof are connected to side surfaces of the first light guide portion and the second light guide portion. A thickness of the intermediate light guide portion is smaller than a thickness of the first light guide portion and a thickness of the second light guide portion. A side surface of the intermediate light guide portion on a side of the prism surface is continuous with the prism surface in a same plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.