Title:
VEHICLE LAMP
Document Type and Number:
WIPO Patent Application WO/2020/039964
Kind Code:
A1
Abstract:
A vehicle headlamp (1) serving as a vehicle lamp comprises: light sources (52R, 52G, 52B) that emit beams of light of mutually different wavelengths; phase modulation elements (54R, 54G, 54B) in which the beams of light emitted from each of the light sources (52R, 52G, 52B) are diffracted, thereby imparting each of the plurality of beams of light with a prescribed light distribution pattern; and a projection lens (80) that adjusts the divergence angle of beams of light DLR, DLG, DLB emitted from the phase modulation elements (54R, 54G, 54B). Of the beams of light DLR, DLG, DLB imparted with the prescribed light distribution pattern by the phase modulation elements (54R, 54G, 54B), the beam of light DLB having the shortest wavelength is imaged at an imaging position CPB closest to the projection lens (80).
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Inventors:
MOTOHASHI KAZUYA (JP)
KITO MASANORI (JP)
KITO MASANORI (JP)
Application Number:
PCT/JP2019/031394
Publication Date:
February 27, 2020
Filing Date:
August 08, 2019
Export Citation:
Assignee:
KOITO MFG CO LTD (JP)
International Classes:
F21S41/64; B60Q1/14; F21S41/125; F21S41/16; F21W102/155; F21W102/18; F21W102/20; F21Y115/30
Domestic Patent References:
| WO2018092834A1 | 2018-05-24 | |||
| WO2017199841A1 | 2017-11-23 |
Foreign References:
| JP2012146621A | 2012-08-02 | |||
| JP2015204272A | 2015-11-16 | |||
| JPH02103801A | 1990-04-16 | |||
| JP2015222687A | 2015-12-10 |
Attorney, Agent or Firm:
MORIMURA Yasuo (JP)
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