公开(公告)号：US20200263850A1

公开(公告)日：2020-08-20

申请号：US16061645

申请日：2016-08-05

申请人： SHARP KABUSHIKI KAISHA

发明人： YOSHINOBU KAWAGUCHI ,  KOJI TAKAHASHI ,  YOSHIYUKI TAKAHIRA

IPC分类号： F21S41/675 ,  G02B26/10 ,  F21S41/16 ,  F21S41/176 ,  F21S41/33 ,  B60Q1/08

摘要： Provided are an illumination device that is capable of making linearly clear a bright-dark contrast of a boundary between an illumination region and a dark portion in at least one of a horizontal direction and a vertical direction, and a vehicular headlight. The illumination device (1A) includes an emitting section (15) having a phosphor that receives excitation light emitted from a laser element (2c) and emits light; and a movable mirror (20A) that continuously changes a position of a spot (15a) of the excitation light on the emitting section (15) in accordance with a predetermined rule. The spot (15a) has an edge portion in which at least a pair of two opposing sides are linear.

公开(公告)号：US20190024854A1

公开(公告)日：2019-01-24

申请号：US15757344

申请日：2016-05-31

申请人： SHARP KABUSHIKI KAISHA

发明人： KAZUNORI ANNEN ,  YOSHINOBU KAWAGUCHI ,  YOSHIYUKI TAKAHIRA ,  KOJI TAKAHASHI ,  YOSUKE MAEMURA ,  TOMOHIRO SAKAUE

IPC分类号： F21K9/65 ,  F21S41/141 ,  F21S41/16 ,  F21V7/22 ,  F21S43/20 ,  F21V9/30 ,  F21K9/64 ,  F21K9/68

CPC分类号： F21K9/65 ,  F21K9/64 ,  F21K9/68 ,  F21S2/00 ,  F21S41/141 ,  F21S41/16 ,  F21S41/176 ,  F21S41/24 ,  F21S41/285 ,  F21S43/20 ,  F21S45/47 ,  F21S45/70 ,  F21V7/00 ,  F21V7/22 ,  F21V9/30 ,  F21V11/10

摘要： A light emission body capable of simultaneously improving spot feature and color unevenness of illumination light is provided. A light emission body (6) according to one embodiment of the present invention includes a fluorescent substance layer (61) having a light irradiation surface (61a) irradiated with laser light (L1) and a light emitting surface (61b) emitting the laser light (L1) and fluorescence (L2), a light absorption layer (62) that blocks the laser light (L1) and the fluorescence (L2) emitted from the light emitting surface (61b), and a scattering layer (63) that scatters the laser light (L1) and the fluorescence (L2) which are not blocked by the light absorption layer (62).

公开(公告)号：US20180347785A1

公开(公告)日：2018-12-06

申请号：US15756222

申请日：2016-05-17

申请人： SHARP KABUSHIKI KAISHA

发明人： YOSHINOBU KAWAGUCHI ,  KAZUNORI ANNEN ,  KOJI TAKAHASHI ,  YOSHIYUKI TAKAHIRA ,  YOSUKE MAEMURA ,  TOMOHIRO SAKAUE

IPC分类号： F21V7/22 ,  F21S2/00 ,  F21V9/30 ,  G02B5/26 ,  G02B5/28 ,  H01S5/022 ,  F21K9/90 ,  F21S41/16 ,  F21S41/24

CPC分类号： F21S2/00 ,  F21V7/22 ,  F21V9/30 ,  G02B5/20 ,  G02B5/26 ,  G02B5/28 ,  H01S5/022

摘要： When a phosphor layer formed of a small-gap phosphor plate is used, color irregularity of illumination light emitted from a light-emitting device is reduced. The light-emitting device (100) which emits laser light (L1) as part of illumination light includes a semiconductor laser (10a to 10c) which emits the laser light (L1), which is visible light, a phosphor layer (1a) formed of a small-gap phosphor plate which emits a fluorescence (L2) upon reception of the laser light (L1) emitted from the semiconductor laser (10a to 10c), and an excitation light distribution control unit (1b) which controls light distribution of the laser light (L1) and guides the laser light (L1) to inside of the phosphor layer (1a). The small-gap phosphor plate is a phosphor plate in which a gap that is present inside has a width equal to or longer than 0 nm and equal to or shorter than one tenths of a wavelength of the laser light (L1).

公开(公告)号：US20190052052A1

公开(公告)日：2019-02-14

申请号：US15757746

申请日：2016-05-12

申请人： SHARP KABUSHIKI KAISHA

发明人： YOSHIYUKI TAKAHIRA ,  KOJI TAKAHASHI ,  YOSHINOBU KAWAGUCHI ,  KAZUNORI ANNEN ,  YOSUKE MAEMURA ,  TOMOHIRO SAKAUE ,  TAKATOSHI MORITA

IPC分类号： H01S5/06 ,  F21K9/64 ,  H01S5/022 ,  H01S5/323

摘要： A wavelength conversion member that includes a single crystal phosphor and has a high yield rate is provided. A light emitting unit (1) is a wavelength conversion member that converts a wavelength of a laser light output from a laser light source and includes a phosphor layer (1a) formed of a single crystal phosphor. A plane orientation of a principal plane (1b), which has an area larger than those of divided planes, of the phosphor layer is {111}, and a plane orientation of some divided planes out of the plurality of divided planes is {1-10}.

公开(公告)号：US20190032866A1

公开(公告)日：2019-01-31

申请号：US16073263

申请日：2016-12-20

申请人： SHARP KABUSHIKI KAISHA

发明人： KAZUNORI ANNEN ,  KOJI TAKAHASHI ,  YOSHINOBU KAWAGUCHI ,  YOSUKE MAEMURA ,  TOMOHIRO SAKAUE ,  YOSHIYUKI TAKAHIRA

IPC分类号： F21K9/65 ,  F21K9/64 ,  F21K9/68 ,  F21S41/141 ,  F21S41/16 ,  F21S43/20 ,  F21V9/30

摘要： Efficiency of extracting fluorescent light in a desired direction is improved. A light emitting portion (12) of a light emitting device (10) includes a gap present inside thereof, the gap having a width that is one-tenth or less of the wavelength of laser light. An excitation-light transmitting film (13) that transmits laser light and that reflects fluorescent light is provided on a side where a light reception surface (12a) that receives laser light is present. A fluorescent-light transmitting film (14) that reflects laser light and that transmits fluorescent light is provided on a side where an emission surface (12b) that emits fluorescent light is present.