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公开(公告)号：US20200183013A1
公开(公告)日：2020-06-11
申请号：US16617482
申请日：2018-04-18
IPC分类号： G01S17/894 , G01S7/486 , G01S17/10
摘要： A three-dimensional image element and an optical radar device that have low cost and are capable of detecting a distance to a measurement object at a close distance before a final result of counting the number of pulses is acquired are realized. A pixel storage element has a plurality of binary counters that integrate the number of electrical pulses at mutually different timings and the reading of data by a signal processing circuit and the integration are able to be performed in parallel.
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公开(公告)号：US20190320149A1
公开(公告)日：2019-10-17
申请号：US16379510
申请日：2019-04-09
发明人： KOJI TAKAHASHI , HIDENORI KAWANISHI
摘要： A light source device includes an optical member. The optical member has an inner space. At least one entrance opening and one exit opening are formed in the optical member. The at least one entrance opening allows a laser beam emitted from a laser-beam source to enter the inner space. The one exit opening allows a laser beam that is scattered or reflected in the inner space to be emitted to the outside of the optical member.
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公开(公告)号：US20190265583A1
公开(公告)日：2019-08-29
申请号：US16279324
申请日：2019-02-19
IPC分类号： G03B21/20
摘要： A light source device includes a laser device emitting primary light, a wavelength converter including an illuminated region to which the primary light is applied, and performing wavelength conversion from the primary light to secondary light, and a light output portion through which the secondary light is taken out, wherein an area of the illuminated region is larger than an area of the light output portion, and the area of the light output portion is not larger than 7 mm2.
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公开(公告)号：US20190301708A1
公开(公告)日：2019-10-03
申请号：US16294202
申请日：2019-03-06
发明人： KOJI TAKAHASHI , KARL PETER WELNA
摘要： A light source device includes a semiconductor laser that outputs laser light, a polarization rotator that rotates a polarization plane of the light, a polarization splitter that transmits and reflects the light in accordance with the polarization plane, and a fluorescent body that emits light by being excited by the laser light. The light source device controls an amount of the light that excites the fluorescent body by controlling a rotational angle of the polarization plane in the polarization rotator in a time-series fashion.
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公开(公告)号：US20190024854A1
公开(公告)日：2019-01-24
申请号：US15757344
申请日：2016-05-31
发明人： KAZUNORI ANNEN , YOSHINOBU KAWAGUCHI , YOSHIYUKI TAKAHIRA , KOJI TAKAHASHI , YOSUKE MAEMURA , TOMOHIRO SAKAUE
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).
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公开(公告)号：US20180347785A1
公开(公告)日：2018-12-06
申请号：US15756222
申请日：2016-05-17
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
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).
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公开(公告)号：US20200049317A1
公开(公告)日：2020-02-13
申请号：US16530368
申请日：2019-08-02
发明人： KOJI TAKAHASHI , KARL PETER WELNA
IPC分类号： F21K9/64 , F21K9/68 , F21K9/61 , F21S41/16 , F21S41/176 , F21S41/365 , F21S41/40
摘要： [Object] External leakage of laser light can be prevented in a reflective type light source device.[Solution] Laser light excites a first surface (21) of a phosphor light-emitting section. (20), and a window portion (30) formed of a transparent member disposed spaced away from the first surface (21) is provided. A light leakage prevention portion (600), which inhibits the laser light reflected at the first surface (21) of the phosphor light-emitting section (20) from leaking to the outside through the window portion (30) is provided to part of the window portion (30).
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公开(公告)号：US20190052052A1
公开(公告)日：2019-02-14
申请号：US15757746
申请日：2016-05-12
发明人： YOSHIYUKI TAKAHIRA , KOJI TAKAHASHI , YOSHINOBU KAWAGUCHI , KAZUNORI ANNEN , YOSUKE MAEMURA , TOMOHIRO SAKAUE , TAKATOSHI MORITA
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}.
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公开(公告)号：US20190032866A1
公开(公告)日：2019-01-31
申请号：US16073263
申请日：2016-12-20
发明人： KAZUNORI ANNEN , KOJI TAKAHASHI , YOSHINOBU KAWAGUCHI , YOSUKE MAEMURA , TOMOHIRO SAKAUE , YOSHIYUKI TAKAHIRA
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.
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公开(公告)号：US20210124030A1
公开(公告)日：2021-04-29
申请号：US16618066
申请日：2018-04-18
摘要： An SN ratio of light to be received is improved. A polarizing filter (150) that is arranged in a light path extending from an object (11) to a light receiving unit (154) of a ToF sensor (153) and allows transmission of light polarized in a direction vertical to a direction of scanning is provided.
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