Title:
LIGHT EMISSION DEVICE, HEAD-UP DISPLAY, VEHICLE LAMP, AND PROJECTOR
Document Type and Number:
WIPO Patent Application WO/2021/065820
Kind Code:
A1
Abstract:
Provided is a light emission device capable of preventing heat damage from external light without reducing light emission performance. This light emission device (20) comprises a light source (24), an optical member (27) that expands the light emitted from the light source (24) by transmitting or reflecting the light and emits the light to the outside, and an optical isolator (70) that is capable of transmitting the light and preventing external light from the outside from entering into the light source (24).
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Inventors:
TOYOSHIMA TAKANOBU (JP)
MOTOHASHI KAZUYA (JP)
SATO NORIKO (JP)
MURAKAMI KAZUOMI (JP)
MOTOHASHI KAZUYA (JP)
SATO NORIKO (JP)
MURAKAMI KAZUOMI (JP)
Application Number:
PCT/JP2020/036681
Publication Date:
April 08, 2021
Filing Date:
September 28, 2020
Export Citation:
Assignee:
KOITO MFG CO LTD (JP)
International Classes:
G02B27/28; B60K35/00; B60R11/02; G02B27/01; G09G3/20; G09G5/00; G09G5/36; G09G5/377
Domestic Patent References:
| WO2019134345A1 | 2019-07-11 | |||
| WO2018021108A1 | 2018-02-01 | |||
| WO2015045937A1 | 2015-04-02 | |||
| WO2017141896A1 | 2017-08-24 |
Foreign References:
| JP2003140264A | 2003-05-14 | |||
| JPH05157994A | 1993-06-25 | |||
| JP2003075775A | 2003-03-12 | |||
| JP2003005241A | 2003-01-08 | |||
| JP2012137546A | 2012-07-19 | |||
| JP2019061241A | 2019-04-18 | |||
| JP2018525836A | 2018-09-06 | |||
| JPH07181955A | 1995-07-21 | |||
| JP2006001377A | 2006-01-05 |
Attorney, Agent or Firm:
SHIN-EI PATENT FIRM, P.C. (JP)
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