公开(公告)号：US20210332965A1

公开(公告)日：2021-10-28

申请号：US17369521

申请日：2021-07-07

Applicant: NICHIA CORPORATION

Inventor： Daisuke IWAKURA

IPC: F21S43/20 ,  F21V9/32 ,  F21V9/08 ,  F21S43/16 ,  H01L25/075 ,  C09K11/64 ,  H01L33/50 ,  H01L33/60 ,  C09K11/77 ,  H01L33/48 ,  F21V9/40 ,  B60Q1/44 ,  B60Q1/34

Abstract: A lighting apparatus includes light emitting elements having an emission peak wavelength of 400 to 510 nm, a first phosphor having an emission peak wavelength of 485 to 700 nm, a second phosphor having an emission peak wavelength of 510 to 590 nm, a third phosphor having an emission peak wavelength of 600 to 700 nm, and a color filter having transmittance for light with a wavelength of 600 to 730 nm that is 80% or more and transmittance for light with a wavelength of 410 to 480 nm that is 3% or more and 50% or less. The color filter transmits a part of light emitted from the first phosphor, at least a part of light emitted from the second phosphor, and at least a part of light emitted from the third phosphor. Light transmitted through the color filter is emitted to the outside.

公开(公告)号：US20210036192A1

公开(公告)日：2021-02-04

申请号：US16942983

申请日：2020-07-30

Applicant: NICHIA CORPORATION

Inventor： Chihiro YAMADA ,  Daisuke IWAKURA

IPC: H01L33/50 ,  H01L33/00 ,  H04N5/225 ,  H04N5/33

Abstract: A illumination device comprises an excitation light source, a first fluorescent material that converts the wavelength of light emitted from the excitation light source and emits light having a light emission peak wavelength in a range of 780 nm or more and 1,600 nm or less, and a cut filter that blocks light in a wavelength range of 870 nm or less, wherein the first fluorescent material contains a fluorescent material having a composition of rare earth aluminate containing Ce and Nd.

公开(公告)号：US20190252581A1

公开(公告)日：2019-08-15

申请号：US16393965

申请日：2019-04-25

Applicant: NICHIA CORPORATION

Inventor： Daisuke IWAKURA

IPC: H01L33/50 ,  H01L33/62 ,  H01L33/60 ,  H01L33/46

Abstract: A method for manufacturing a light emitting device includes disposing on lateral surfaces of the light emitting element, a first wavelength converting member containing a first phosphor to convert the first light emitted from the light emitting element into a second light having a second peak wavelength longer than the first peak wavelength. The light emitting element provided with the first wavelength converting member is disposed on a base. A second wavelength converting member is disposed on the base. The second wavelength converting member covers an upper surface of the light emitting element provided with the first wavelength converting member and lateral surfaces of the first wavelength converting member provided opposite to additional lateral surfaces of the first wavelength converting member. The additional lateral surfaces face the lateral surface of the light emitting element. The second wavelength converting member contains a second phosphor.

公开(公告)号：US20190234581A1

公开(公告)日：2019-08-01

申请号：US16260957

申请日：2019-01-29

Applicant: NICHIA CORPORATION

Inventor： Daisuke IWAKURA

IPC: F21S43/20 ,  F21V9/32 ,  F21V9/08 ,  F21S43/16 ,  H01L25/075 ,  H01L33/48 ,  H01L33/50 ,  H01L33/60 ,  C09K11/77 ,  C09K11/64

CPC classification number: F21S43/255 ,  B60Q1/34 ,  B60Q1/44 ,  B60Q2400/20 ,  C09K11/641 ,  C09K11/7706 ,  F21S43/16 ,  F21V9/08 ,  F21V9/32 ,  F21V9/40 ,  F21W2103/20 ,  F21W2103/35 ,  H01L25/0753 ,  H01L33/486 ,  H01L33/502 ,  H01L33/507 ,  H01L33/60

Abstract: A lighting apparatus includes light emitting elements having an emission peak wavelength of 400 to 510 nm, a first phosphor having an emission peak wavelength of 485 to 700 nm, a second phosphor having an emission peak wavelength of 510 to 590 nm, a third phosphor having an emission peak wavelength of 600 to 700 nm, and a color filter having transmittance for light with a wavelength of 600 to 730 nm that is 80% or more and transmittance for light with a wavelength of 410 to 480 nm that is 3% or more and 50% or less. The color filter transmits a part of light emitted from the first phosphor, at least a part of light emitted from the second phosphor, and at least a part of light emitted from the third phosphor. Light transmitted through the color filter is emitted to the outside.

公开(公告)号：US20160011354A1

公开(公告)日：2016-01-14

申请号：US14794644

申请日：2015-07-08

Applicant: NICHIA CORPORATION

Inventor： Yusaku ACHI ,  Daisuke IWAKURA

IPC: F21V8/00

CPC classification number: G02B6/002 ,  G02B6/0068 ,  G02B6/0085 ,  G02B6/009 ,  H01L2224/48091 ,  H01L2924/00014

Abstract: A backlight device includes a light guide plate including a first incident surface, and one or more second incident surfaces that are connected to the first incident surface and inclined with respect to the first incident surface in a top plan view; at least one green illuminant arranged to face one of (i) the first incident surface and (ii) the one or more second incident surfaces; and at least one red illuminant arranged to face the other of (i) the first incident surface and (ii) the one or more second incident surfaces. At least one of (i) the green light emitted from the green illuminant, and (ii) the red light emitted from the red illuminant, contains a blue component whose emission peak wavelength is 420 nm to 500 nm.

Abstract translation: 背光装置包括导光板，该导光板包括第一入射表面和一个或多个第二入射表面，其在顶部平面图中连接到第一入射表面并相对于第一入射表面倾斜; 至少一个绿色光源布置成面对（i）第一入射表面和（ii）一个或多个第二入射表面中的一个; 以及至少一个红色发光体，被布置为面对（i）第一入射表面和（ii）一个或多个第二入射表面中的另一个。 （i）从绿色光源发出的绿色光和（ii）从红色发光体发出的红色光中的至少一种含有发光峰值波长为420nm〜500nm的蓝色成分。

公开(公告)号：US20230288042A1

公开(公告)日：2023-09-14

申请号：US18320344

申请日：2023-05-19

Applicant: NICHIA CORPORATION

Inventor： Daisuke IWAKURA

IPC: F21S43/20 ,  F21V9/32 ,  F21V9/08 ,  F21S43/16 ,  H01L25/075 ,  C09K11/64 ,  H01L33/50 ,  H01L33/60 ,  C09K11/77 ,  H01L33/48 ,  F21V9/40 ,  B60Q1/44 ,  B60Q1/34

CPC classification number: F21S43/255 ,  F21V9/32 ,  F21V9/08 ,  F21S43/16 ,  H01L25/0753 ,  C09K11/641 ,  H01L33/502 ,  H01L33/507 ,  H01L33/60 ,  C09K11/7706 ,  H01L33/486 ,  F21V9/40 ,  B60Q1/44 ,  B60Q1/34 ,  F21W2103/35

Abstract: A lighting apparatus includes light emitting elements having an emission peak wavelength of 400 to 510 nm, a first phosphor having an emission peak wavelength of 485 to 700 nm, a second phosphor having an emission peak wavelength of 510 to 590 nm, a third phosphor having an emission peak wavelength of 600 to 700 nm, and a color filter having transmittance for light with a wavelength of 600 to 730 nm that is 80% or more and transmittance for light with a wavelength of 410 to 480 nm that is 3% or more and 50% or less. The color filter transmits a part of light emitted from the first phosphor, at least a part of light emitted from the second phosphor, and at least a part of light emitted from the third phosphor. Light transmitted through the color filter is emitted to the outside.

公开(公告)号：US20230116946A1

公开(公告)日：2023-04-20

申请号：US18046907

申请日：2022-10-14

Applicant: NICHIA CORPORATION

Inventor： Takuya NAKABAYASHI ,  Daisuke IWAKURA ,  Yoichi BANDO ,  Yasunori SHINOMIYA ,  Satoshi YOSHINAGA

IPC: F21V8/00

Abstract: A light emitting module includes a light source, a light guide member, and first and second light reflective members. The light guide member is configured to transmit light from the light source. The light guide member having an upper surface and a lower surface opposite to the upper surface. The first light reflective member is arranged on a lower surface side of the light guide member. The first light reflective member has a lower surface. The first light reflective member includes a first resin, and a first reflective body having a refractive index higher than a refractive index of the first resin. The second light reflective member is arranged on a lower surface side of the first light reflective member. The second light reflective member includes a second resin, and a second reflective body having a refractive index lower than a refractive index of the second resin.

公开(公告)号：US20200313047A1

公开(公告)日：2020-10-01

申请号：US16833552

申请日：2020-03-28

Applicant: NICHIA CORPORATION

Inventor： Chihiro YAMADA ,  Daisuke IWAKURA

IPC: H01L33/50 ,  H01L33/62 ,  H01L33/60 ,  H01L33/32 ,  H01L33/56 ,  H01L33/48 ,  C09K11/66 ,  C09K11/77 ,  C09K11/08

Abstract: The red light-emitting device includes a light source, a first layer covering at least a portion of the light source and containing a fluoride phosphor converting light emitted from the light source, and a second layer covering at least a portion of the first layer and containing a nitride phosphor converting light emitted from the light source and/or the first layer. An emission intensity ratio at an emission peak wavelength of the light source is greater than 0 and 0.1 or less, and the emission intensity ratio at the wavelength of the maximum emission peak in an emission spectrum of the light-emitting device is greater than 2.8, supposing the reference emission intensity that is the minimum emission intensity within the range of plus or minus 15 nm or 30 nm from the wavelength of the maximum emission peak in the emission spectrum of the light-emitting device is 1.

公开(公告)号：US20180351053A1

公开(公告)日：2018-12-06

申请号：US15993014

申请日：2018-05-30

Applicant: NICHIA CORPORATION

Inventor： Taiki YUASA ,  Daisuke IWAKURA

IPC: H01L33/50 ,  H01L33/48 ,  H01L33/60

CPC classification number: H01L33/44 ,  H01L33/46 ,  H01L33/504 ,  H01L33/505

Abstract: A light-emitting device includes: a light-transmissive member having a first surface, a second surface opposite the first surface, and a third surface contiguous with the first surface and the second surface; a phosphor layer disposed opposite to the second surface of the light-transmissive member; a cover layer disposed on a lateral surface of the phosphor layer and the third surface of the light-transmissive member; a light-emitting element disposed opposite to the phosphor layer; and a light-reflective member that covers at least a portion of the cover layer.

公开(公告)号：US20180004040A1

公开(公告)日：2018-01-04

申请号：US15636645

申请日：2017-06-29

Applicant: NICHIA CORPORATION

Inventor： Masafumi KURAMOTO ,  Daisuke IWAKURA

IPC: G02F1/1335 ,  F21V5/02 ,  G02B19/00

CPC classification number: G02F1/133603 ,  F21V5/02 ,  G02B6/0011 ,  G02B19/0014 ,  G02B19/0061 ,  G02F1/133502 ,  H01L25/0753 ,  H01L33/20 ,  H01L33/50 ,  H01L2224/48137 ,  H01L2224/8592

Abstract: A light-emitting device includes a package having a recessed portion defined by a bottom surface and lateral walls surrounding the bottom surface, first and second light-emitting elements aligned in the longitudinal direction on the bottom surface, and a wavelength conversion member in the recessed portion, the wavelength conversion member converting light from the first light-emitting element. The first and second light-emitting elements each have a polygonal shape other than a rectangular shape in a front view. The first and second light-emitting elements are disposed away from each other so that a longest side of each light-emitting element will be substantially parallel to the longitudinal direction of the bottom surface and so that sides facing each other will be substantially parallel to each other. The wavelength conversion member is disposed at least in a region on the bottom surface between the first and second light-emitting elements.