Title:
LIGHT SOURCE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/018819
Kind Code:
A1
Abstract:
A light source device according to the present disclosure comprises: a collimating lens that collimates incident light; a light source group that includes a plurality of light sources disposed apart from one another in a direction separating away from the optical axis of the collimating lens and that overall emits a beam of light having a divergence angle which differs in a first direction and a second direction, the first direction and the second direction being perpendicular to one another and being each parallel to a direction separating away from the optical axis; and a light deflecting element that is disposed between the light source group and the collimating lens in the optical axis direction and that deflects the light emitted from each of the plurality of light sources in a direction separating away from the optical axis to cause the light to be incident on the collimating lens in the first direction, in which the divergence angle of the light source group is smaller from among the first direction and the second direction.
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Inventors:
YAMADA AKIHIRO (JP)
KIDA HIROSHI (JP)
KIDA HIROSHI (JP)
Application Number:
PCT/JP2020/028228
Publication Date:
January 27, 2022
Filing Date:
July 21, 2020
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F21V5/00; F21V5/04; G02F1/13357; F21Y115/10
Domestic Patent References:
| WO2016035349A1 | 2016-03-10 |
Foreign References:
| JP2019129076A | 2019-08-01 |
Attorney, Agent or Firm:
YOSHITAKE Hidetoshi et al. (JP)
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