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Stepped light guide illumination systems
Publication/Patent Number: US10908350B2 Publication Date: 2021-02-02 Application Number: 16/826,234 Filing Date: 2020-03-22 Inventor: Vasylyev, Sergiy   Assignee: S.V.V. TECHNOLOGY INNOVATIONS, INC   IPC: F21V8/00 Abstract: A stepped light guide illumination system employing a planar sheet of an optically transmissive material having a stepped light guiding structure including one or more parallel arrays of channels. Light is input into the stepped light guiding structure using a number of light sources, such as LEDs, located within the channels and coupled to the stepped light guiding structure at multiple locations. Light is extracted from the stepped light guiding structure by two-dimensional patterns of light extraction features provided in surface areas of the stepped light guiding structure located between the parallel channels.
Publication/Patent Number: US2021011212A1 Publication Date: 2021-01-14 Application Number: 16/916,862 Filing Date: 2020-06-30 Inventor: Hsu, Wei-tsung   Su, Hui-wen   Chen, Chun-fang   Assignee: InnoLux Corporation   IPC: F21V8/00 Abstract: An electronic device is provided. The electronic device includes a backlight module. The backlight module includes a light-guiding plate and a light-guiding element, and the light-guiding element is disposed under the light-guiding plate. In addition, the light-guiding element has a protruding structure, and the protruding structure faces the light-guiding plate.
Publication/Patent Number: US2021026056A1 Publication Date: 2021-01-28 Application Number: 16/968,099 Filing Date: 2018-07-05 Inventor: Park, Kwanwoo   Woo, Kisuk   Kang, Seokhoon   Cheon, Jeongin   Assignee: LG ELECTRONICS INC.   IPC: F21V8/00 Abstract: Discussed is a lamp or a lighting device including a substrate; a plurality of semiconductor light-emitting devices; a light guide layer provided with an incident light surface on which light emitted from the plurality of semiconductor light-emitting devices is incident and a light exit surface from which the light is emitted; a first reflective layer disposed on one surface of the light guide layer facing towards the light exit surface to reflect the light; and a second reflective layer disposed on another surface different from the one surface of the light guide layer on which the first reflective layer is disposed, wherein the first reflective layer is disposed on the same surface as the incident light surface, and wherein the second reflective layer is disposed obliquely to the incident light surface to allow light incident on the incident light surface to travel along the light guide layer
Optical sheet, backlight unit, liquid crystal display device, and information equipment
Publication/Patent Number: US10921507B2 Publication Date: 2021-02-16 Application Number: 16/597,346 Filing Date: 2019-10-09 Inventor: Shiba, Satoshi   Assignee: KEIWA Inc.   IPC: F21V8/00 Abstract: A luminance equalization region is formed on one surface of an optical sheet incorporated into a liquid crystal display device to equalize luminance of a visible region of the liquid crystal display device. The luminance equalization region is in at least the visible region in a state in which the optical sheet is incorporated into the liquid crystal display device. The luminance equalization region in the visible region has a colored portion and a light-transmitting portion that surrounds the colored portion. The distance from an end of a display surface of the liquid crystal display device to an end of the visible region is 10 mm or less.
Publication/Patent Number: US2021055471A1 Publication Date: 2021-02-25 Application Number: 16/099,983 Filing Date: 2018-04-20 Inventor: Xiang, Desheng   Wang, Yanming   Wang, Jiaqiang   Chang, Cheng   Liu, Rui   Liu, Shuainan   Assignee: Beijing BOE Optoelectronics Technology Co., Ltd.   BOE TECHNOLOGY GROUP CO., LTD.   IPC: F21V8/00 Abstract: A backlight module includes a back plate including a back plate body and a first bending structure perpendicular to the back plate body. The backlight module includes a light source. On a side at which the light source is disposed, the back plate further includes a second bending structure connected to the first bending structure and extending in the same direction as the back plate body. The second bending structure includes a plurality of spaced protrusion portions, and a depressed portion between the adjacent protrusion portions configured to accommodate a light emitting portion of the light source.
Publication/Patent Number: EP2823221B1 Publication Date: 2021-02-24 Application Number: 13711730.5 Filing Date: 2013-03-08 Inventor: Gourlay, James   Assignee: Design LED Products Limited   IPC: F21V8/00
Publication/Patent Number: US2021003765A1 Publication Date: 2021-01-07 Application Number: 16/502,698 Filing Date: 2019-07-03 Inventor: Defever, Derrick   Mccarter, Glenn   Schickel, Dylan   Assignee: VARROC LIGHTING SYSTEMS, S.R.O.   IPC: F21V8/00 Abstract: A light assembly includes a core, a light source, and a functional layer. The core extends along a centerline, and includes a base end, a distal end, a first side spanning axially between the base and distal ends, and a second side opposite the first side and spanning axially between the base and distal ends. The second side includes an unbinding element axially extending partially between the base and distal ends. The light source is adapted to emit light rays into the core at the base end. The functional layer is laterally spaced from the first side, axially extends partially between the base and distal ends, and is axially aligned to the unbinding element.
Publication/Patent Number: EP3775681A1 Publication Date: 2021-02-17 Application Number: 19721420.8 Filing Date: 2019-04-01 Inventor: Logunov, Stephan Lvovich   Ocampo, Manuela   Wigley, Peter Gerard   Assignee: Corning Incorporated   IPC: F21V8/00
Lighting device and display device
Publication/Patent Number: US10928578B2 Publication Date: 2021-02-23 Application Number: 16/747,302 Filing Date: 2020-01-20 Inventor: Yagi, Shugo   Ishida, Takeshi   Kanbayashi, Yuuichi   Tsubooka, Satoshi   Assignee: SHARP KABUSHIKI KAISHA   IPC: F21V8/00 Abstract: First and second prism sheets have pluralities of first and second unit prisms, respectively, arranged along a first direction and extending along a second direction, each of which has a base that is parallel to the first direction and a pair of oblique sides standing from both ends, respectively, of the base, and an angle that a second LED facing oblique side, which is one of the oblique sides that faces toward the LED, forms with respect to the base in the first direction in the second unit prism is smaller than an angle that a first LED facing oblique side that faces toward the LED forms with respect to the base in the first direction in the first unit prism.
Publication/Patent Number: US2021055472A1 Publication Date: 2021-02-25 Application Number: 16/969,482 Filing Date: 2019-02-12 Inventor: Bretschneider, Eric   Schinagl, Ferdinand   Assignee: Quarkstar LLC   IPC: F21V8/00 Abstract: A luminaire module (100) includes light-emitting elements (LEEs) (110) arranged to provide light; a light guide (130) including a receiving end (131a) and an opposing end (131b), the receiving end (131a) arranged to receive light provided by the LEEs (110), a core (134) including a first transparent material with a first refractive index (n1), the core (134) having a pair of opposing side surfaces (132a, 132b) extending along a length of the light guide (130) between the receiving and opposing ends (131a, 131b), and a cladding (136) including a second material having a second smaller refractive index (n2), the cladding (136) extending across and being in contact with at least a portion of the opposing side surfaces (132a, 132b) forming a cladding-core interface. The cladding-core interface is optically smooth. Additionally, the luminaire module (100) includes an optical extractor (140) arranged to receive guided light from the opposing end (131b) of the light guide (130) and configured to output into the ambient environment at least some of the received guided light.
Publication/Patent Number: EP3184886B1 Publication Date: 2021-01-20 Application Number: 16201839.4 Filing Date: 2016-12-02 Inventor: Goldstein, Jörg   Schmidt, Steven   Eibl, Stefan   Assignee: REHAU AG + Co   IPC: F21V8/00
Backlight module and manufacturing method thereof, display device and light guide device
Publication/Patent Number: US10914884B2 Publication Date: 2021-02-09 Application Number: 16/097,503 Filing Date: 2018-02-01 Inventor: Gao, Jian   Chen, Xiaochuan   Wang, Wei   Tan, Jifeng   Meng, Xiandong   Meng, Xianqin   Lu, Pengcheng   Assignee: BOE TECHNOLOGY GROUP CO., LTD.   IPC: F21V8/00 Abstract: A backlight module, a manufacturing method thereof, a display device and a light guide device are provided. The backlight module includes: a light guide structure, including a volume grating layer, the volume grating layer including a plurality of volume grating portions and a light guide portion between adjacent volume grating portions, the plurality of volume grating portions being configured to introduce a beam of a specific wavelength into the light guide portion; and a light extraction structure, located on a light exit side of the light guide structure, wherein a refractive index of the light guide structure is greater than a refractive index of the light extraction structure, and an incident angle of the beam introduced into the light guide portion on a plane where the light guide portion is located is not less than a total reflection critical angle of the light guide structure.
Publication/Patent Number: CN110431345B Publication Date: 2021-02-26 Application Number: 201780086380.7 Filing Date: 2017-12-12 Inventor: J.登布里尹   邱怡峰   Assignee: 亮锐有限责任公司   IPC: F21V8/00 Abstract: 公开了一种光照系统,其被布置为补偿系统中的不同LED之间的亮度变化。该系统可以包括耦合到光导的LED的阵列,其中光导被提供有多个光提取图案。每个光提取图案可以包括多个光提取特征。光提取图案可以在特征的密度方面彼此不同。具有更大密度的光提取图案可以与阵列中的不太亮的LED组合,而具有更低特征密度的光提取图案可以与阵列中的更亮的LED组合。
Publication/Patent Number: US2021055467A1 Publication Date: 2021-02-25 Application Number: 16/617,061 Filing Date: 2018-05-30 Inventor: Humbach, Oliver   Bülters, Mike   Assignee: Temicon GmbH   IPC: F21V8/00 Abstract: A decorative light guide element having a decorative surface made of segments, at least one of which is a decorative light guide element, and method for producing such a decorative light guide element with illumination and decorative functions. To provide a decorative light guide element, which facilitates illumination independent of the decoration but also has visible decoration when deactivated, provision is made for the decorative light guide element to have a planar light guide element and a light source for coupling light into the light guide element. On a first side of the light guide element, a planar decorative element and, on the opposite side, a microstructure layer for coupling out the light of the light guide element are arranged. An intermediate layer is arranged between the light guide and decorative elements. The intermediate layer having a lower refractive index than the material of the light guide element.
Publication/Patent Number: US2021003766A1 Publication Date: 2021-01-07 Application Number: 16/982,313 Filing Date: 2019-03-22 Inventor: Rinko, Kari   Assignee: NITTO DENKO CORPORATION   IPC: F21V8/00 Abstract: With a simple configuration, an optical device having an in-coupling function to a lightguide is provided. The optical device includes a light guiding layer; and in-coupling optics provided integrally with the light guiding layer to couple light from a light source to an incident edge of the light guiding layer. The in-coupling optics include an optical element that is convex toward the incident edge and an air cavity provided between the optical element and the incident edge.
Back plate including receiving slots back plate assembly, backlight module and display device
Publication/Patent Number: US10908352B1 Publication Date: 2021-02-02 Application Number: 16/830,547 Filing Date: 2020-03-26 Inventor: Chen, Liri   Zhou, Qingen   Zhang, Rongshun   Assignee: K-TRONICS (SUZHOU) TECHNOLOGY CO., LTD.   BOE TECHNOLOGY GROUP CO., LTD.   IPC: F21V8/00 Abstract: A back plate includes: a bottom plate; side plates on the same side of the bottom plate, wherein an accommodation space enclosed by both the bottom plate and the side plates is formed, the side plates include a first side plate including an inner surface facing the accommodation space; and receiving slots which are respectively located in the side plates and include a first receiving slot in the first side plate. The first receiving slot penetrates the first side plate in a first direction. The first receiving slot includes a receiving head, a positioning portion and a receiving tail, which are sequentially arranged from a slot bottom toward a slot opening in a second direction. A size of at least a part of the positioning portion in a third direction is greater than a size of each of the receiving head and the receiving tail in the third direction.
Linear lighting device
Publication/Patent Number: US10901131B2 Publication Date: 2021-01-26 Application Number: 16/775,655 Filing Date: 2020-01-29 Inventor: Schabacker, Stephan   Woelfing, Bernd   Senner, Eric   Assignee: SCHOTT AG   IPC: F21V8/00 Abstract: A luminous glazing is provided that includes a pane and a light guide. The pane has two opposite faces and is transparent in the visible spectrum. The light guide has a core surrounded by a cladding so that the core is capable of guiding light along the longitudinal extension of the light guide. The light guide includes a light scattering element so that when light is injected into one of the end faces if the light guide, the light guide is a side-emitting light guide and forms a linear light source. The light guide extends along the faces and is disposed on one face such that the light scattering area is spaced apart from the face and so that light guided in the core, scattered, and laterally exiting from the light guide enters the transparent pane through the face and is be transmitted through the pane to the opposite face.
Publication/Patent Number: CN212510985U Publication Date: 2021-02-09 Application Number: 202021515838.1 Filing Date: 2020-07-28 Inventor: 奚晓珊   Assignee: 广州优炜光电科技有限公司   IPC: F21V8/00 Abstract: 本实用新型公开了一种均匀混光的照明器件,包括导光柱,所述导光柱包括入射面、混光面及出射面,光线自所述入射面进入,经所述混光面反射,自所述出射面射出,所述混光面包括多个曲面与多个平面。本实用新型将导光柱的混光面设计为多个平面与多个曲面的组合面,入射光线经入射面进入导光柱内部时,考虑到不同色光在的折射率不同,其分别在混光面上进行多处反射,将光线混合均匀,同时入射光线曲面处收缩,以达到收窄光照区域的效果,提高入射光线亮度,与现有的匀光透镜对比,经过本实用新型的混合光线的匀光效果更佳,亮度提高,适用于各种反复多变的照明环境极其他类似需用的应用场合。
Backlight unit and liquid crystal display device having a backlight unit
Publication/Patent Number: US10884178B2 Publication Date: 2021-01-05 Application Number: 15/716,227 Filing Date: 2017-09-26 Inventor: Kim, Jinho   Kong, Changkyeong   Assignee: LG DISPLAY CO., LTD.   IPC: F21V8/00 Abstract: The present disclosure relates to a backlight unit and a liquid crystal display device having a backlight unit. The backlight unit includes a light guide plate, a light source assembly positioned adjacent to a light-incident surface among lateral surfaces of the light guide plate, and an external tape covering the entire lateral surface of the light guide plate except the light-incident surface and parts of an upper surface and a lower surface of the light guide plate. Thus, the light efficiency of the backlight unit may be increased and the manufacturing costs reduced. Further, since the light efficiency of the backlight unit is increased, the luminance and power consumption of the liquid crystal display device can be improved.
Publication/Patent Number: EP3760919A1 Publication Date: 2021-01-06 Application Number: 19913093.1 Filing Date: 2019-01-31 Inventor: Sim, Sujin   Kim, Minho   Lee, Uihyung   Jung, Yongmin   Joung, Juyoung   Assignee: LG Electronics Inc.   IPC: F21V8/00 Abstract: The present embodiment comprises: a plurality of light-emitting units; and a reflector including reflector units having spaces formed to receive the plurality of light-emitting units, respectively. Each of the plurality of light-emitting units includes an LED package mounted on a substrate and a light diffusion layer having a groove portion formed on a surface opposite to the substrate in the LED package, wherein the outer circumference of the light diffusion layer faces the inner surface of a reflector unit. In the reflector, the plurality of reflector units are integrally formed, the spaces expand along a direction extending away from the substrate, and a wall forming each of the spaces surrounds the outer circumference of each of the LED package and the light diffusion layer.
Total 500 pages