公开(公告)号：US20170115446A1

公开(公告)日：2017-04-27

申请号：US15127043

申请日：2015-02-19

Applicant: Sharp Kabushiki Kaisha

Inventor： Yoshinobu HIRAYAMA ,  Shugo YAGI ,  Toru INATA

IPC: F21V8/00

CPC classification number: G02B6/0053 ,  G02B6/0038 ,  G02B6/0056 ,  G02B6/0073

Abstract: A lighting device includes a light source, a light guide plate including a light incident surface, a non-light input opposite surface, and a light emission surface, a prism sheet including a base member, a light input-side prism portion formed on a light input-side plate surface of the base member and including light input-side unit prisms, and a light output-side prism portion formed on a light output-side plate surface of the base member and including light output-side unit prisms, and an incidence angle control structure in which a first light output-side inclined surface, a first light input-side inclined surface, and a second light input-side inclined surface respectively make inclination angles with respect to the plate surface of the base member, having a magnitude such that a light incidence angle with respect to the first light output-side inclined surface is in an angle range including the Brewster's angle.

公开(公告)号：US20150301266A1

公开(公告)日：2015-10-22

申请号：US14439021

申请日：2013-10-23

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Ryoh ARAKI ,  Shugo YAGI ,  Kazuya HATTA

IPC: F21V8/00

CPC classification number: G02B6/0055 ,  G02B6/005 ,  G02B6/0088

Abstract: An illumination device of the present invention is provided with: a light source; a light guide plate having a light-receiving face that faces the light source and on which light that has been generated from the light source is incident, an opposite surface that is on the opposite side to the light-receiving face, and a light-exiting surface from which light that has entered the light guide plate from the light-receiving face exits; a first wall disposed along the front-back direction of the light guide plate and having a light absorbing surface that faces the opposite surface and absorbs light that has leaked out from the light guide plate; and a first light absorbing member that extends between a front periphery adjacent to the opposite surface on the light-exiting surface and a front end of the first wall, and absorbs light that has leaked out from the light guide plate.

Abstract translation: 本发明的照明装置设置有：光源; 导光板，其具有与光源相对的受光面，并且从光源产生的光入射到与光接收面相反的一侧的相反面; 从光接收面入射到导光板的光的出射表面离开; 沿着导光板的前后方向设置的第一壁，具有面对相对面的吸光面，吸收从导光板泄漏出来的光; 以及第一光吸收构件，其在与出射表面上的相对表面相邻的前周边与第一壁的前端之间延伸，并且吸收从导光板泄漏的光。

公开(公告)号：US20170205558A1

公开(公告)日：2017-07-20

申请号：US15329662

申请日：2015-07-22

Applicant: Sharp Kabushiki Kaisha

Inventor： Yoshinobu HIRAYAMA ,  Takao IMAOKU ,  Takeshi ISHIDA ,  Ryuzo YUKI ,  Shugo YAGI

IPC: F21V8/00

CPC classification number: G02B6/0038 ,  G02B6/00 ,  G02B6/0036 ,  G02B6/0053 ,  G02B6/0055 ,  G02B6/0061 ,  G02B6/0085 ,  G02B6/0088 ,  G02B6/009 ,  G02F1/133308 ,  G02F2001/133314 ,  G02F2001/133317

Abstract: A backlight unit includes LEDs, a light guide plate, a prism sheet, exiting light reflecting portions, prisms, concave lenticular lens lenses, and flat portions. The concave lenticular lenses are configured such that an occupancy rate of concave cylindrical lenses with respect to the second direction is higher in an area closer to a light entering surface with respect to the first direction and the occupancy rate is lower in an area farther from the light entering surface. The flat portions are formed adjacent to the concave cylindrical lenses with respect to the second direction such that an occupancy rate of flat portions with respect to the second direction is lower in an area closer to a light entering surface with respect to the first direction and the occupancy rate of the flat portions with respect to the second direction is higher in an area farther from the light entering surface.

公开(公告)号：US20170038515A1

公开(公告)日：2017-02-09

申请号：US15124722

申请日：2015-02-19

Applicant: Sharp Kabushiki Kaisha

Inventor： Ryuzo YUKI ,  Takeshi ISHIDA ,  Takao IMAOKU ,  Yoshinobu HIRAYAMA ,  Shugo YAGI

IPC: F21V8/00

CPC classification number: G02B6/0036 ,  G02B6/00 ,  G02B6/0038 ,  G02B6/0061 ,  G02B6/0085 ,  G02B6/0088 ,  G02F1/133308 ,  G02F2001/133314 ,  G02F2001/133317

Abstract: A backlight unit includes a light emission reflecting portion, first reflecting protrusions, and second reflecting protrusions. The light emission reflecting portion includes unit reflecting portions that include main reflecting surfaces and light reentering surfaces arranged opposite to the main reflecting surfaces, respectively. The first reflecting protrusions include extended main reflecting surfaces that continue to the main reflecting surfaces, respectively, and first auxiliary reflecting surfaces that reflect rays of light traveling toward an opposite plate surface and direct the rays of light toward the main reflecting surfaces and the extended main reflecting surfaces. The second reflecting protrusions include extended light reentering surfaces that continue to the light reentering surfaces, respectively, and second auxiliary reflecting surfaces that reflect rays of light entering through at least one of the light reentering surfaces and the extended light reentering surfaces and direct the rays of light toward the light exiting surface.

Abstract translation: 背光单元包括发光反射部，第一反射突起和第二反射突起。 发光反射部分包括分别包括主反射表面和与主反射表面相对布置的光再入入表面的单元反射部分。 第一反射突起包括分别延伸到主反射表面的延伸的主反射表面和反射朝向相对板表面的光线的第一辅助反射表面，并将光线引向主反射表面和延伸主体 反射面。 第二反射突起包括分别延续到光再入入表面的延伸的光再入入表面和反射入射通过至少一个光再入入表面和延伸的光再入入表面的光线的第二辅助反射表面， 朝向光出射表面的光。

公开(公告)号：US20160320545A1

公开(公告)日：2016-11-03

申请号：US15107902

申请日：2014-12-18

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Yoshinobu HIRAYAMA ,  Shugo YAGI ,  Toru INATA

IPC: F21V8/00

CPC classification number: G02B6/0038 ,  G02B6/0036 ,  G02B6/0053 ,  G02B6/0061 ,  G02B6/0085

Abstract: A backlight device is provided with: LEDs; a light guide plate having a light-receiving face, a light-exiting surface, and an opposite plate surface; a prism sheet including a plurality of light-exiting side unit prisms aligned along a second direction; a light-exiting surface-side prism portion including a plurality of light-exiting surface-side prism units aligned along the second direction; a light emission reflection portion including a plurality of reflection units aligned along a first direction at an interval; an opposite plate surface-side prism portion including a plurality of opposite plate surface-side unit prisms aligned along the second direction; and bow-shaped portions disposed into such a form as to be adjacent to the light-exiting surface-side prism units in the second direction while extending along the first direction, the bow-shaped portions having a bow-shaped cross-section.

Abstract translation: 背光装置设有：LED; 导光板，具有受光面，出光面和相对的板面; 棱镜片，其包括沿着第二方向排列的多个光出射侧单元棱镜; 光出射表面侧棱镜部分，其包括沿着所述第二方向排列的多个出射表面侧棱镜单元; 发光反射部分，其包括以一定间隔沿第一方向排列的多个反射单元; 相对的板表面侧棱镜部分，包括沿着第二方向排列的多个相对的板表面侧单元棱镜; 所述弓形部分沿着所述第一方向延伸设置成与所述出射表面侧棱镜单元相邻的形式，所述弓形部分沿着所述第一方向延伸，所述弓形部分具有弓形横截面。

公开(公告)号：US20160313496A1

公开(公告)日：2016-10-27

申请号：US15105537

申请日：2014-12-12

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Yoshinobu HIRAYAMA ,  Shugo YAGI ,  Toru INATA

IPC: F21V8/00 ,  G02F1/1333

CPC classification number: G02B6/0053 ,  G02B6/0036 ,  G02B6/0038 ,  G02B6/005 ,  G02B6/0055 ,  G02B6/0058 ,  G02B6/0068 ,  G02B6/0073 ,  G02B6/0083 ,  G02B6/0085 ,  G02B6/0088 ,  G02B6/0093 ,  G02B27/2214 ,  G02F1/133308 ,  G02F1/13338 ,  G02F1/133385 ,  G02F2001/133331

Abstract: A backlight device is provided with: LEDs; a light guide plate having a light-receiving face, a light-exiting surface, and an opposite plate surface; a prism sheet that is disposed on the light-exiting side of the light guide plate and that includes a plurality of light-exiting side prisms aligned along a second direction; a light-exiting surface-side prism portion that is disposed in the light-exiting surface of the light guide plate and that includes a plurality of light-exiting surface-side prisms aligned along the second direction; a light emission reflection portion that is disposed in the opposite plate surface of the light guide plate and that includes a plurality of reflection units aligned along a first direction at an interval; and an opposite plate surface-side prism portion that is disposed in the opposite plate surface of the light guide plate and that includes a plurality of opposite plate surface-side prisms aligned along the second direction.

Abstract translation: 背光装置设有：LED; 导光板，具有受光面，出光面和相对的板面; 棱镜片，其设置在所述导光板的出射侧，并且包括沿着第二方向排列的多个光出射侧棱镜; 光出射表面侧棱镜部分，其设置在所述导光板的出射表面中并且包括沿着所述第二方向排列的多个出光表面侧棱镜; 发光反射部分，其设置在所述导光板的相对的板表面中，并且包括沿着第一方向间隔排列的多个反射单元; 以及相对的板表面侧棱镜部，其设置在所述导光板的相对的板表面中，并且包括沿着所述第二方向排列的多个相对的板表面侧棱镜。

公开(公告)号：US20170269285A1

公开(公告)日：2017-09-21

申请号：US15327761

申请日：2015-07-22

Applicant: Sharp Kabushiki Kaisha

Inventor： Yoshinobu HIRAYAMA ,  Takao IMAOKU ,  Takeshi ISHIDA ,  Ryuzo YUKI ,  Shugo YAGI

IPC: F21V8/00

CPC classification number: G02B6/0061 ,  G02B6/0036 ,  G02B6/0038 ,  G02B6/0053 ,  G02B6/0055

Abstract: A backlight device includes: LEDs; a light guide plate that has a light-receiving face, a light-exiting surface, and an opposite surface; a reflective sheet disposed so as to face the opposite surface of the light guide plate; and an exiting-light reflecting part that facilitates the emission of light from the light-exiting surface by reflecting light that propagates within the light guide plate, and that is disposed on the light-exiting surface side of the light guide plate. The exiting-light reflecting part is formed of a reflective unit disposed in plurality with gaps therebetween along a first direction, which is along a pair of end faces that are among the peripheral end faces of the light guide plate, are on opposite sides of the light guide plate, and do not include the light-receiving face. The reflective unit extends along a second direction, which is along a pair of end faces that are among the peripheral end faces of the light guide plate and that include the light-receiving face.

公开(公告)号：US20160054508A1

公开(公告)日：2016-02-25

申请号：US14780663

申请日：2014-03-27

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Yoshinobu HIRAYAMA ,  Hiroshi FUKUSHIMA ,  Ryoh ARAKI ,  Shugo YAGI ,  Masaki KAGEYAMA ,  Toru INATA

IPC: F21V8/00

CPC classification number: G02B6/0055 ,  G02B6/0038 ,  G02B6/0053

Abstract: A backlight unit includes LEDs, a light guide plate, a reflection sheet, a prism sheet, and an anisotropic reflection portion. The light guide plate includes a light entrance surface opposed to the LEDs and light exit surface. The reflection sheet includes a reflection surface opposed to an opposite plate surface of the light guide plate opposite from the light exit surface. The prism sheet is formed on a side of the light guide plate opposite from a side on which the reflection sheet is disposed. The prism sheet includes unit prisms that extend along a first direction and are arranged parallel to one another along a second direction. The anisotropic reflection portion includes unit reflectors disposed on the reflection surface of the reflection sheet. The unit reflectors extend along the first direction and are arranged parallel to one another along the second direction.

Abstract translation: 背光单元包括LED，导光板，反射片，棱镜片和各向异性反射部。 导光板包括与LED和光出射表面相对的光入射表面。 反射片包括与导光板的与光出射表面相对的相对的板表面相对的反射表面。 棱镜片形成在与设置有反射片的一侧相对的导光板的一侧。 棱镜片包括沿着第一方向延伸并沿着第二方向彼此平行布置的单位棱镜。 各向异性反射部包括设置在反射片的反射面上的单位反射器。 单元反射器沿着第一方向延伸并且沿着第二方向彼此平行地布置。

公开(公告)号：US20160054507A1

公开(公告)日：2016-02-25

申请号：US14780660

申请日：2014-03-27

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Yoshinobu HIRAYAMA ,  Hiroshi FUKUSHIMA ,  Ryoh ARAKI ,  Shugo YAGI ,  Masaki KAGEYAMA ,  Toru INATA

IPC: F21V8/00

CPC classification number: G02B6/0053 ,  G02B6/0038 ,  G02B6/0055 ,  G02B6/0091

Abstract: A backlight unit includes LEDs, a light guide plate, a lenticular lens portion, a first prism sheet, and a second prism sheet. The lenticular lens portion includes cylindrical lenses that extend along a first direction and arranged parallel to one another along a second direction. The first prism sheet is disposed on a front side of the lenticular lens portion and includes first unit prisms arranged parallel to one another along the second direction and each extending along the first direction and having a triangular cross section. The second prism sheet is disposed between the lenticular lens portion and the first prism sheet. The second prism sheet includes second unit prisms arranged parallel to one another along the second direction and each extending along the first direction, having a triangular cross section, and having a vertex angle larger than a vertex angle of each first unit prism.

Abstract translation: 背光单元包括LED，导光板，双凸透镜部分，第一棱镜片和第二棱镜片。 双凸透镜部分包括沿着第一方向延伸并沿着第二方向彼此平行布置的柱面透镜。 第一棱镜片设置在双凸透镜部分的前侧，并且包括沿着第二方向彼此平行布置并且沿着第一方向延伸并且具有三角形横截面的第一单位棱镜。 第二棱镜片设置在双凸透镜部分和第一棱镜片之间。 第二棱镜片包括沿着第二方向彼此平行布置并且沿着第一方向延伸的第二单位棱镜，其具有三角形横截面，并且具有大于每个第一单位棱镜的顶角的顶角。