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公开(公告)号：US11374157B2
公开(公告)日：2022-06-28
申请号：US16726318
申请日：2019-12-24
发明人： Hiroaki Watanabe
摘要： (Problem)
To provide a small light illuminating apparatus configured to uniformly cool a plurality of light emitting diodes (LEDs)
(Problem-solving approach)
A light illuminating apparatus that irradiates light of a line shape includes a light source unit having a plurality of light sources arranged along a first direction on a surface of a substrate, a heat dissipation unit having a plurality of heat sink fins formed along the first direction, and thermally coupled to an opposing surface side of the substrate, a housing which receives the heat dissipation unit and forms a wind tunnel with a cooling wind flowing inside, wherein the cooling wind cools the heat sink fins, and a first cooling fan which generates the cooling wind flowing in the first direction within the wind tunnel, wherein at least one of opposite sides of a second direction of the housing has an air hole through which the cooling wind is discharged to outside via the plurality of heat sink fins, or the cooling wind is absorbed via the plurality of heat sink fins from outside, and the wind tunnel serves as a pressure chamber in which positive pressure or negative pressure is produced by the cooling wind.-
公开(公告)号：US11309463B2
公开(公告)日：2022-04-19
申请号：US15941506
申请日：2018-03-30
发明人： Taiji Mizuta
IPC分类号： H01L33/58 , H01L33/54 , H01L25/13 , H01L25/075 , H01L33/20
摘要： A light emitting device includes a substrate, a LED element placed on the substrate, and a lens placed on an optical path of the LED element, wherein the lens has a convex part protruding in a direction of an optical axis of the lens in a central part of an exit surface of the lens.
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公开(公告)号：US20190103529A1
公开(公告)日：2019-04-04
申请号：US16140159
申请日：2018-09-24
发明人： Yasuo KOGURE , Shinichi OGAWA , Satoshi YAJIMA
摘要： Provided is an optical semiconductor apparatus having an optical semiconductor device, a light-permeable buffer layer containing a cured high-hardness silicone resin having a thickness of 1-300 μm, which covers at least part of a light-emitting surface of the optical semiconductor device, and a flexible sealing layer containing a cured flexible silicone resin having a lower hardness than the light-permeable buffer layer, which covers the optical semiconductor device and the light-permeable buffer layer.
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公开(公告)号：US20190018246A1
公开(公告)日：2019-01-17
申请号：US16033080
申请日：2018-07-11
发明人： Yasuo KOGURE
CPC分类号： G02B27/0172 , C03C3/064 , G02B6/0026 , G02B6/005 , G02B2027/0123 , G02B2027/0136 , G02B2027/0174 , G02B2027/0178
摘要： Provided is a light guide plate for an image display device which uses lead-free glass, has excellent color reproducibility and a light weight, and may obtain a wide viewing angle. A light guide plate for an image display device, which guides image light inputted from an image display element and outputs the image light toward a user's pupil, is configured to be made of lead-free glass having a refractive index of 1.8 or more with respect to a wavelength of the image light, and to have internal transmittance of 0.6 or more with respect to a wavelength of 400 nm when a plate thickness is 10 mm.
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公开(公告)号：US20190011112A1
公开(公告)日：2019-01-10
申请号：US16026755
申请日：2018-07-03
发明人： Kazutaka SHITO
摘要： A light illuminating apparatus for irradiating light of a line shape extending in a first direction and having a predetermined line width in a second direction perpendicular to the first direction, includes a light emitting unit including a substrate, and a plurality of light sources arranged at a predetermined interval along the first direction on the substrate such that an optical axis is matched to a third direction perpendicular to the first and second directions, and a mirror unit having a mirror surface to reflect and focus the light. In a cross section of the mirror unit taken along a plane defined by the second direction and the third direction, a cross-sectional shape of the mirror surface is a curved shape resulting from rotation of each of a horizontal axis direction positive side part and a horizontal axis direction negative side part of a parabola y=ax2.
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公开(公告)号：US20180214843A1
公开(公告)日：2018-08-02
申请号：US15884312
申请日：2018-01-30
发明人： Kazutaka SHITO
CPC分类号： B01J19/123 , A61L2/10 , A61L2/26 , A61L2202/11 , B01J2219/0869 , B01J2219/0871 , B01J2219/0879 , B01J2219/1203 , B05D3/067 , C03C25/104 , C03C25/12 , C03C25/24 , C03C25/6226 , C03C2218/32 , G02B6/02395 , G02B19/0028 , G02B19/0095
摘要： A light irradiation device includes a light source having a plurality of solid-state elements disposed on a substrate to be defined by a first direction and a second direction in a plurality of rows and irradiate the irradiation target with light from a third direction, an optical element refracting light from the solid-state elements, emitting the light and narrowing a spread angle of light to be emitted from the solid-state elements relative to the third direction, a first reflection portion having at least two first reflection surfaces on a downstream side in the third direction of the irradiation target and reflecting a part of light incident on the first reflection surface to the irradiation target, and a second reflection portion having a pair of second reflection surfaces disposed between the optical element and the first reflection portion and guiding light from the optical element to the first reflection surface.
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公开(公告)号：US10012825B2
公开(公告)日：2018-07-03
申请号：US15458862
申请日：2017-03-14
发明人： Yasuo Kogure
CPC分类号： G02B19/009 , B41F23/005 , B41F23/0409 , B41J3/4073 , B41J11/002 , B41M7/0081 , F26B3/28 , G02B19/0066 , H05B33/02
摘要： A light irradiating device includes a plurality of LED elements which is disposed on a substrate along a first direction and irradiatesan ultraviolet ray on an irradiating object; and a plurality of light collecting units which is disposed in an optical path of each LED element and forms the ultraviolet ray emitted from each LED element to have a narrow spread angle, in which the ultraviolet ray which passes through the light collecting unit to be directed to the irradiating object has a first light distribution peak which is inclined to an upstream side of the first direction at a first angle and a second light distribution peak which is inclined to a downstream side of the first direction at a second angle, with respect to a second direction which is perpendicular to the first direction.
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公开(公告)号：US20170282597A1
公开(公告)日：2017-10-05
申请号：US15458530
申请日：2017-03-14
发明人： Kazutaka SHITO
CPC分类号： B41J11/002 , B41J2/45 , F21V5/007 , G02B19/0014 , G02B19/0066 , G02B19/0095 , G02B27/0905 , G02B27/0911 , G02B27/0927 , G02B27/0955
摘要： Provided is a light illuminating apparatus for irradiating light of a line shape extending in a first direction and having a line width in a second direction. The light illuminating apparatus includes light emitting units, each including a substrate, light sources arranged at an interval along the first direction on the substrate and placed such that a direction of an optical axis is matched to a direction perpendicular to the substrate surface, and optical devices placed on optical paths of each light source to shape light from each light source into light with a predetermined divergence angle, wherein the light emitting units are arranged on an arc having its center at the irradiation position when viewed in the first direction, and an irradiation width in the second direction of light from the light emitting units is approximately equal within a preset range in a direction perpendicular to the irradiation surface.
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公开(公告)号：US20170197001A1
公开(公告)日：2017-07-13
申请号：US15400309
申请日：2017-01-06
发明人： Kazutaka SHITO
CPC分类号： A61L2/10 , G02B6/02395 , G02B6/4401 , G21K5/00
摘要： Provided is a light illuminating apparatus irradiates a target object relatively moveable along a first direction with light. The apparatus includes a light source having a plurality of solid-state devices which irradiates the target object with the light in a second direction perpendicular to the first direction; a first reflecting part having at least one first reflecting surface placed at a downstream side in the second direction below the target object when viewed from the first direction, wherein the first reflecting part reflects a portion of the light from the light source incident on the first reflecting surface onto the target object; and a second reflecting part having a pair of second reflecting surfaces standing erect from the light source toward the first reflecting surface, wherein the second reflecting part guides the light from the light source into the first reflecting surface.
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公开(公告)号：US20170191650A1
公开(公告)日：2017-07-06
申请号：US15393439
申请日：2016-12-29
发明人： Norio KOBAYASHI
IPC分类号： F21V29/65 , F21V7/00 , F21V31/00 , B05D3/06 , F21V29/505 , F21V29/70 , F21V29/80 , F21V29/503 , F21K9/62
CPC分类号： F21V29/65 , B05D3/065 , B41J11/002 , F21K9/62 , F21V7/00 , F21V29/503 , F21V29/505 , F21V29/70 , F21V29/80 , F21V31/00 , F21Y2105/16 , F21Y2115/10 , G02B19/0019 , G02B19/0066 , H01L23/46 , H01L25/0753 , H01L33/648
摘要： The light irradiating device includes a substrate; a plurality of light emitting diode elements disposed on a surface of the substrate; a cooling unit which is disposed on a rear surface of the substrate; an inner wall which is disposed to enclose a light passage area through which light of the plurality of light emitting diode elements passes; a housing which accommodates the substrate, the plurality of light emitting diode elements, the cooling unit, and the inner wall and generates a space between the inner wall and the housing; an air inlet which introduces air in the light passage area onto the rear surface of the substrate; a flow channel which passes through the rear surface of the substrate and connects the air inlet and the space; and a circulation port which is provided to discharge the air in the space to the light passage area.
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