Title:
投影レンズ及びそれを備えた車両用灯具
Document Type and Number:
Japanese Patent JP6487334
Kind Code:
B2
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.
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Inventors:
Akinori Matsumoto
Tatsuhiko mountain road
Kenji Yoshida
Masafumi Katayama
Takahito Osawa
Mamoru Kosuga
Tatsuhiko mountain road
Kenji Yoshida
Masafumi Katayama
Takahito Osawa
Mamoru Kosuga
Application Number:
JP2015549090A
Publication Date:
March 20, 2019
Filing Date:
November 13, 2014
Export Citation:
Assignee:
Koito Manufacturing Co., Ltd.
International Classes:
F21S41/25; F21V5/00; F21V17/00
Domestic Patent References:
| JP11014804A | ||||
| JP2000000856A | ||||
| JP2004319380A | ||||
| JP2005010657A | ||||
| JP2000135729A | ||||
| JP8160201A |
Foreign References:
| US20130308210 |
Attorney, Agent or Firm:
Shinei Patent Office