Projection lens with peripheral thick part and vehicle lamp provided with the same
US10162158B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2014 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | Dec 24, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B19/0061
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A projection lens formed of a light-transmitting resin including an incidence part on which light is incident, an emission part, a peripheral edge portion, and a thick part. Light is incident on the incidence part. The emission part emits the light incident from the incidence part. The peripheral edge portion is provided at a boundary between the incidence part and the emission part. The thick part is provided at a part of the peripheral edge portion, made thicker in an optical axis direction than other parts of the peripheral edge portion and having a gate mark formed at least on a part of an outer peripheral surface of the thick part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.