The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 23, 2021
Filed:
Jul. 13, 2018
Koito Manufacturing Co., Ltd., Tokyo, JP;
Takanobu Toyoshima, Shizuoka, JP;
Naoki Sugiura, Shizuoka, JP;
KOITO MANUFACTURING CO., LTD., Tokyo, JP;
Abstract
The present invention relates to a vehicle headlight that ensures improving usage efficiency of light focusing of light emitted from a light source. A vehicle headlight () has a main reflecting mirror () having an elliptic main reflecting surface () and a light source () positioned at a first focal point (F) of the main reflecting surface () and disposed opposed to the main reflecting surface (). The vehicle headlight includes a reflection type polarizing plate () disposed between the main reflecting mirror () and a second focal point (F) of the main reflecting mirror (), an auxiliary reflecting mirror () that is disposed opposed to the reflection type polarizing plate () and reflects reflected polarized light (B) by the reflection type polarizing plate () again to focus the reflected polarized light at the second focal point (F) of the main reflecting surface (), and a quarter-wave plate () that is disposed between the reflection type polarizing plate () and the auxiliary reflecting mirror () and disposed between the auxiliary reflecting mirror () and the second focal point (F) of the main reflecting mirror ().