Title:
PLANAR ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/249557
Kind Code:
A1
Abstract:
A planar illumination device (1) according to an embodiment of the present invention is provided with: a substrate (2); a first optical element (5a); and a second optical element (6a). A plurality of light sources (3) are two-dimensionally disposed on the substrate (2). The first optical element (5a) is disposed on the emission side of the plurality of light sources (3), and collects light emitted from the plurality of light sources (3). The second optical element (6a) tilts, with respect to a first axial direction (Y-axis direction), the distribution of light collected by the first optical element (5a).
Inventors:
ITO GINGA (JP)
MUKUMOTO SUGURU (JP)
MUKUMOTO SUGURU (JP)
Application Number:
PCT/JP2022/004402
Publication Date:
December 01, 2022
Filing Date:
February 04, 2022
Export Citation:
Assignee:
MINEBEA MITSUMI INC (JP)
International Classes:
F21S2/00; F21V5/04; G02F1/13357; F21Y115/10
Domestic Patent References:
| WO2017090335A1 | 2017-06-01 |
Foreign References:
| JP2009117195A | 2009-05-28 | |||
| JP2017027706A | 2017-02-02 | |||
| JPH0915729A | 1997-01-17 | |||
| JP2002221605A | 2002-08-09 | |||
| JP2012203092A | 2012-10-22 |
Attorney, Agent or Firm:
TORANOMON INTELLECTUAL PROPERTY FIRM (JP)
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