公开(公告)号：US11015768B2

公开(公告)日：2021-05-25

申请号：US16375452

申请日：2019-04-04

Applicant: NICHIA CORPORATION

Inventor： Atsushi Yamamoto ,  Takeshi Tamura

IPC: H01L25/075 ,  F21K9/66 ,  H01L21/66 ,  H01L33/46 ,  F21K9/64 ,  F21K9/68 ,  F21K9/90 ,  F21K9/69 ,  H01L33/50 ,  F21Y105/16

Abstract: A method of manufacturing a light source device includes: providing a substrate having a plurality of light sources disposed thereon; causing the plurality of light sources to emit light; measuring a first light-intensity distribution of an entire surface that is in parallel to the substrate and located above the plurality of light sources; and based on a measured value of the first light-intensity distribution, forming a light-reflecting pattern above the plurality of light sources to obtain a second light-intensity distribution that is different from the first light-intensity distribution.

公开(公告)号：US10670233B2

公开(公告)日：2020-06-02

申请号：US16352388

申请日：2019-03-13

Applicant: NICHIA CORPORATION

Inventor： Takeshi Tamura ,  Hiroshi Fujimori ,  Motokazu Yamada

IPC: F21V13/08 ,  G02F1/1335 ,  H01L25/075 ,  F21V3/02 ,  F21V7/00 ,  F21V9/08 ,  H01L33/60 ,  F21Y115/10 ,  G02F1/13357

Abstract: A light emitting device includes a mounting board on which a plurality of light sources are disposed; a partitioning member surrounding the light sources and including a plurality of walls that include top parts and form a plurality of areas; a diffuser sheet provided above the partitioning member and supported directly or indirectly by at least one of the top parts; a plurality of first reflectors provided directly above the light sources and positioned on one of an upper surface and a lower surface of the diffuser sheet; a second reflector provided directly above the top parts and positioned on one of the upper surface and the lower surface of the diffuser sheet; and a wavelength conversion sheet positioned above the diffuser sheet. The first reflectors contain a light absorbing material that absorbs at least part of a wavelength of light from the light sources.