Abstract: A glass sheet of the present invention is characterized in that: the glass sheet has a refractive index nd of from 1.55 to 2.30; an angle formed by a principal surface and an end surface is from 85° to 90°; and the end surface has a surface roughness Ra of 1 ?m or less.

Abstract: A backlight and a display device are provided herein, which is related to the field of display technology and intends to improve visual effect of the image displayed by the display device. The backlight may include a back plate, a light guide plate and a light source. The back plate includes an accommodation groove, and the light guide plate includes a holding groove at a first side surface of the light guide plate. The light source includes at least one light emitting element. The holding groove is configured to hold at least a portion of the at least one light emitting element, and the accommodation groove is configured to accommodate the light guide plate and the light source.

Abstract: The backlight module includes a backplate, a light guide plate and a light source. The light guide plate includes a body part and a bending part. The body part is located on a side of the backplate facing the display panel, and a surface of the body part facing away from the backplate is an out-light surface. The bending part has a first end face and a second end face. The first end face is connected to the body part, the second end face is located on the side of the backplate facing away from the display panel and is an out-light surface. The light source is located on the side of the backplate facing away from the display panel and opposite to the second end face. The disclosure can achieve a narrower bezel design or bezel-less design.

Abstract: A backlight kit includes a base member, a covering member, a slim-type light guide element and an illumination module. The covering member is combined with the base member. The slim-type light guide element and the illumination module are arranged between the base member and the covering member. After the illumination module emits a light beam to the slim-type light guide element, the light beam is transferred through the slim-type light guide element. Consequently, a luminance gradient region is formed on the surface of the covering member.

Abstract: A backlight module includes a light bar, a light guide plate located on a light exit side of the light bar, a reflective strip, and at least two cushion pads. The light guide plate includes a first side surface away from the light bar. The reflective strip is attached to the first side surface. Each cushion pad includes a first positioning portion and an avoiding portion. An orthographic projection of the reflective strip on the first side surface is located outside an orthographic projection of the first positioning portion on the first side surface, and is partially overlapped with an orthographic projection of the avoiding portion on the first side surface. The first positioning portion is in surface contact with a portion of the first side surface that is non-covered by the reflective strip. The avoiding portion and the reflective strip have a first interval therebetween.

Abstract: A touch sensing apparatus is disclosed, comprising a light transmissive panel that defines a touch surface, an opposite rear surface, and panel sides extending between the touch surface and rear surface. The panel sides define a perimeter of the light transmissive panel. The touch sensing apparatus comprises a plurality of light emitters and detectors arranged along the perimeter and adjacent the panel sides, a light guide arranged along the perimeter and having a first reflective surface comprising a diffusive light scattering element.

Abstract: A display device with a transparent illuminator and an liquid crystal (LC) display panel is disclosed. The transparent illuminator includes a light source and a transparent lightguide, which may be based on a slab of transparent material with zigzag light propagation of the illuminating light in the slab and/or a transparent photonic integrated circuit with singlemode ridge waveguides for spreading the illuminating light in a plane parallel to the plane of LC display panel. The lightguide includes a plurality of grating out-couplers whose position is coordinated with positions of LC pixels for higher throughput. A reflective offset-to-angle optical element may be provided to form an image in angular domain through the LC panel and through the transparent illuminator, resulting in an overall compact and efficient display configuration.

Abstract: According to an embodiment, an illumination device includes a light guide having a first plane, a second plane opposed to the first plane and substantially parallel to the first plane, and a tilted plane opposed to the first plane and tilted to the first plane, the tilted plane and the second plane being arranged in a first direction, and a light emitting device including a first light emitting part, a second light emitting part, and a third light emitting part which are located directly below the tilted plane, arranged in the first direction, and configured to emit light having wavelengths different from each other.

Abstract: An optical device for coupling light propagating between a waveguide and an optical transmission component is provided. The optical device includes a taper portion and a grating portion. The taper portion is disposed between the grating portion and the waveguide. The grating portion includes rows of grating patterns. A first size of a first grating pattern in a first row of grating patterns is larger than a second size of a second grating pattern in a second row of grating patterns. A first distance between the first row of grating patterns and the waveguide is less than a second distance between the second row of grating patterns and the waveguide.

Abstract: The present disclosure provides a backlight module including a plurality of light-emitting elements and a light guide plate, in which the light guide plate includes a light-emitting surface, a bottom surface opposite to the light-emitting surface, and a light-incident side connecting the light-emitting surface and the bottom surface. The light-emitting elements are disposed at the light-incident side along a first direction, and the light-emitting surface includes a first region near the light-incident side. The light guide plate includes a plurality of columns extending along the first direction and disposed in the first region of the light-emitting surface and a plurality of microstructure groups, in which each microstructure group includes a plurality of microstructures arranged along a second direction different from the first direction, and each microstructure connects the adjacent two of the columns.

Abstract: An optical element and lighting module are provided with increased light output, uniformity of brightness and color, and controlled lighting distributions. The optical element functions simultaneously as an outcoupling TIR light guide and a direct throughput lens. Additionally, areas typically dedicated to bezels or edge reflectors can be greatly reduced or eliminated due to decreased hotspotting to provide a fixture face with a very high percentage of light emitting area. It provides typical benefits of an edge-lit light guide design including thin forms and shallow depth, extended emitting area, and single or dual peak off axis light distributions particularly useful in applications such as indirect illumination of ceilings, wall washing, aisle lighting, exterior façade lighting and area lighting as well as other lighting applications. Embodiments are described for direct, indirect, and direct:indirect illumination in recessed, surface and suspended fixture configurations.

Abstract: A light guide is provided. The light guide includes a planar body with a first light receiving surface, a light transmission region in optical communication with the first light receiving surface, and an aperture having an inner circumferential wall defining a light emission region, the inner circumferential wall having a plurality of vertically extending flutes. Substantially all light received at the light receiving surface internally reflects through the transmission region before extraction at the emission region. A luminaire is also provided. The luminaire includes a housing, a light guide as described herein, and a plurality of point light sources in optical communication with the light receiving surface of the light guide.

Abstract: Disclosed are a display device and a backlight module. The display device includes a backlight module, a liquid crystal display panel, and a chip-on-flex. The backlight module may include a frame body, and an edge-type light source, a light guide plate, a reflector strip, a light absorber strip, and an optical film disposed in the frame body. The light absorber strip and the diffuser sheet are not bonded, and the reflector strip and the diffuser sheet of the optical film are bonded.

Abstract: Provided is a surface light emitting illumination device including: a light guide panel on which a fine pattern is formed; a channel formed in a closed curve shape inside an edge of the light guide panel; an LED strip inserted in the channel, in which a plurality of LED chips are mounted on a flexible substrate at regular intervals; a fixing band inserted in the channel to fix the LED strip so that the LED strip is not separated from the channel; a channel communication part formed in the light guide panel to communicate with the channel.

Abstract: Provided is a surface light emitting illumination device including: a light guide panel on which a fine pattern is formed; a channel that includes a pair of first and second channels inside an edge of the light guide panel, and a third channel that connects the first and second channels; first and second LED strips inserted in the first and second channels, in which a plurality of LED chips are mounted on a flexible substrate; an electric wire inserted in the third channel to connect the first and second LED strips; first and second fixing bands inserted in the first and second channels to fix the first and second LED so that the first and second LED strips are not separated from the first and second channels; and a channel communication part formed in a side wall of the light guide panel to communicate with the first channel.

Abstract: A backlight comprises a light guide plate and a light emitting element. The light guide plate has a first main surface, a second main surface opposite the first main surface, and a side surface connecting the first main surface and the second main surface, the side surface having a first region and a second region different from the first region. The light emitting element emits light toward the first region of the side surface of the light guide plate. The side surface of the light guide plate includes, in the second region of the side surface of the light guide plate, a first inclined surface that extends from an outer edge of the first main surface in an inclined manner and has an inclination angle between 52° and 83° with respect to the first main surface.

Abstract: With a simple configuration, an optical device which realizes uniform light distribution and adequate display quality is provided. An optical device includes: a light guiding layer; a first optically functional layer provided on at least one of a first principal face and a second principal face of the light guiding layer; and a ray control structure, at an end of the light guiding layer on a light-incident side, being provided on a surface of the first optically functional layer that is on an opposite side to the light guiding layer. The ray control structure reduces light which is incident from an edge of the light guiding layer to the first optically functional layer at an angle smaller than a critical angle.

Abstract: A dishwasher appliance having a console assembly equipped with light bleed prevention features is provided. In one aspect, the dishwasher includes a cabinet, a door rotatably mounted to the cabinet, and a console assembly mounted to the door. The console assembly includes a light source operable to emit light into a console cover. A light blocking film is mounted to a top surface of the console cover and defines a light pass-through opening through which light may pass to illuminate an indicia. The console cover includes one or more edges that may be exposed to an ambient environment. The console cover is formed at least in part of a non-clear resin such that light is allowed to travel through the console cover and through the light pass-through opening yet light bleed stemming from the one or more edges is not visible to a human eye.

Abstract: The present application discloses a backlight module and a display device thereof. The backlight module includes a light guide plate, a side part thereof including a light incident surface; a light bar, including a circuit board and a plurality of photoelectric elements disposed on the circuit board, wherein the circuit board includes spacing parts located between two adjacent photoelectric elements, and light emitting surfaces of the photoelectric elements correspond to the light incident surface; and a reflective sheet, disposed between the light guide plate and the light bar, wherein the reflective sheet includes hollowed parts, and the hollowed parts are correspondingly disposed between the light emitting surfaces and the light incident surface, so as to reduce a reflective brightness of the photoelectric elements.

Abstract: A backlight module and a display device are provided. The backlight module includes a back plate, a light source layer, a light guide plate, and an optical film. By providing a compensation light structure between backlights, issues of insufficient light at a gap can be better compensated, and an optical performance of the display device can be improved.

Abstract: An optical array formed from unclad fibers that are affixed with a micro-coating of adhesive has been developed to allow for enhanced light collection translating into parallel streams of optical output. The system is designed to be used for applications requiring parallel output streams (e.g. random number generation for parallel computing architectures, observation of position information for optical sensing application, etc.). The system acts as a parallel, pixeled detector for a source where the individual pixels are simultaneously readout.

Abstract: A light guide plate includes a plate body with a first surface, a second surface opposite to the first surface, and a side surface connecting the first surface and the second surface and defining a plate thickness; a light source arranged to project light into the side surface of the light guide plate; and a plurality of microstructures arranged periodically on the first surface and indented from the first surface towards the second surface to define an indentation depth of less than half the plate thickness. Each of the light-uniformity microstructures substantially has a shape of an inverted truncated cone.

Abstract: A backlight unit includes LEDs a light guide plate, and a wavelength converter. The light guide plate includes a light entering end surface and a light exiting plate surface. The light entering end surface is at least a section of an outer peripheral end surface of the light guide plate. The light exiting plate surface is a plate surface of the light guide plate. The wavelength converter is interposed among the LEDs and the light entering end surface to extend along the length direction of the light entering end surface. The wavelength converter includes phosphors configured to wavelength-convert light. The wavelength converter is configured such that at least any one of end portions in the length direction is formed as a great light emission portion configured to emit a greater amount of wavelength-converted light per unit length in the length direction than that of a center portion.

Abstract: A light guide plate with a toothed light incident surface includes a light guide plate body. A first plate surface and a second plate surface are formed at two opposite surfaces of the light guide plate body, respectively. Micro-structure points are provided and distributed randomly and densely on the first plate surface. Among multiple side surfaces of the light guide plate body, at least one side surface is provided with a plurality of first teeth arranged sequentially in parallel. The first teeth extend along a height direction of the light guide plate body. A first groove is arranged between every two neighboring first teeth. The light incident surface is formed by the plurality of first teeth and the plurality of first grooves.

Abstract: An input coupler includes: a plurality of semi-reflectors located along an optical path along which a light incident from a light source travels, each of the plurality of semi-reflectors comprising a reflective surface that is inclined with respect to the optical path and configured to reflect a first portion of the light and transmit a second portion of the light; and a plurality of optical path changing members configured to change an optical path of the light transmitted through the plurality of semi-reflectors, wherein the plurality of semi-reflectors and the plurality of optical path changing members are arranged such that the light passing through at least one of the plurality of semi-reflectors and emitted in one direction has a linear beam distribution.

Abstract: A light emission module includes: a light guide including emission sides disposed facing each other, a first and second side connecting the emission sides, a third side connecting the first and second side; a light source unit including a first and second light source corresponding to the first and third side respectively, and a light source substrate supporting the first and second light source and including a first and second portion supporting the first and second light source respectively, the second portion inclined at a first angle with respect to the first portion, the second light source emits a light incident on the third side comprising a first and second orientation angle edge light, the former inclined at a second angle and refracted to propagate in a path adjacent to the second side, and then refracted adjacent to the second side, the first angle smaller than the third angle.

Abstract: Discussed is a frame for display capable of reducing a bezel width, and a display apparatus including the same, wherein the frame for display includes first to fourth frame members connected with each other so as to make a rectangular band shape, wherein each of the first to fourth frame members includes a diagonal connection surface at its end, and a restraint member prepared in the diagonal connection surface, wherein the restraint member prevents deformation in the frame members connected by the diagonal connection surfaces.

Abstract: A light guide device that improves the efficiency of backlighting and creates a more uniformly illuminated image is provided. The light guide device includes a first light guide that guides light emitted from a light source and a second light guide component disposed in contact with a surface of the first light guide component to guide incident light incident through the first light guide component. A first optical reflection component is disposed on the surface of the first light guide component to reflect incident light to an adjacent surface of the first light guide component. A second optical reflection component is disposed on a surface of the second light guide component that is adjacent to the first light guide component to reflect incident light through the first optical reflection component to the first light guide component.

Abstract: The invention provides a lighting unit comprising a waveguide for providing first light (111) having a first spectral distribution and second light (121) having a second spectral distribution emanating from a waveguide (100) in different directions, wherein the first spectral distribution and second spectral distribution differ. For instance, the first light (111) and the second light (121) have different color temperatures.

Abstract: A light source module includes a substrate, a first illumination element, a second illumination element and a third illumination element. The first illumination element includes a blue LED chip disposed on the substrate and a first wavelength converting layer that covers the blue LED chip, in which blue light emitted from the blue LED chip can be converted to light in the range of a first wavelength. The second illumination element includes a blue LED chip disposed on the substrate and a second wavelength converting layer that covers the blue LED chip, in which blue light emitted from the blue LED chip can be converted to light in the range of a second wavelength. The third illumination element includes a blue LED chip.

Abstract: The present invention relates to the field of display techniques, and discloses a light guide plate and a manufacturing method thereof, as well as a backlight module; the light guide plate comprises a light guide plate body and lattice points, wherein the light guide plate body is provided with a light output surface, and a receiving groove for receiving a light source is formed in a surface of the light guide plate body facing away from the light output surface thereof, and a side surface and a bottom surface of the receiving groove form a light input surface. The lattice points are distributed inside the light guide plate body along a plane parallel with the light output surface; the further the lattice points are distanced from the light input surface, the more densely they are distributed.

Abstract: A household appliance includes an information light device that projects light onto a surface to enable a user to determine whether or not the household device is in operation. The information light device may include a light guide. The light guide may be disposed along a side portion of the household appliance.

Abstract: The disclosure is related to an ultrathin planar light source apparatus, comprising a LED light source and a light guide plate; the LED light source comprises a light emitting chip which is disposed opposite to a light incident side of the light guide plate; a polarizer parallel to the light guide plate and disposed between the light emitting chip and the light guide plate; the polarizer projects the light emitted from the light emitting chip toward the light guide plate. The disclosure controls the light emitted from the LED light source well to deflect within a certain range of angles such that the light completely enter into the light guide plate without increasing the thickness of the light guide plate.

Abstract: A light guide plate includes a light incident surface, a side surface opposite to the light incident surface, and a light emitting surface connecting to the light incident surface and the side surface. The light emitting surface has a first portion adjacent to the light incident surface and a second portion adjacent to the side surface. The first portion defines a number of first micro recesses. The second portion defines a number of second micro recesses. In a plane perpendicular to the light emitting surface and the side surface, a cross section of each second micro recess is a portion of an ellipse. A major axis of the ellipse is inclined towards the light incident surface. A maximum depth of each second micro recess is greater than a maximum depth of each first micro recess.

Abstract: A curved surface backlight unit is disclosed which includes: a light source; a curved surface light guide plate disposed parallel to the light source; first patterns on one surface of the light guide plate; a reflection plate disposed under the light guide plate; optical sheets disposed on the light guide plate; and second patterns formed on one surface of at least one of the optical sheets.

Abstract: The present invention relates to an area light source device and a display device using the area light source device. The present invention includes a point light source, and a light guide plate. The light guide plate includes a protruding structure on a light entrance surface side. The protruding structure protrudes from a light exit surface side or a counter light exit surface side opposite from the light exit surface. The point light source includes an arrangement of point light sources. The protruding structure is configured such that oblique cylinders each having a semicircular upper surface protrude and arranged in a direction of the arrangement of the point light sources. The point light sources are arranged so that the lines of intersection of adjacent ones of the oblique cylinders coincide with the middles of the point light sources, respectively.

Abstract: Disclosed is a transparent display device including a light guide plate formed with a plurality of concave patterns at the lower surface thereof to totally reflect polarized light entered in a lateral direction while transmitting natural light entered from a lower direction therethrough; a light source disposed in a lateral direction of the light guide plate to emit visible light including first and second polarized lights; a first polarizing plate disposed at a lateral portion of the light guide plate to transmit either one of the first and second polarized lights through the light guide plate; a liquid crystal panel for driving liquid crystals to change the phase of the polarized light; and a second polarizing plate for controlling an amount of the polarized light according to the changed phase of the polarized light.

Abstract: The invention described herein is a very thin flat panel LED luminaire, including a flat baseboard, a flat reflection panel, a flat acrylic panel, a flat diffusion panel, LED bar, and aluminum encasement frame which combines with the baseboard to form the chassis for the luminaire. The LED bar is placed along either or both sides of the stack. The acrylic panel is printed with a mesh-like mask pattern of dots in a pattern in which the density of the pattern is decreases the farther away from the LED bar the pattern is, differentially coupling the light from the point source LED bar from the reflection panel into the flat acrylic panel so that illumination across the luminaire is substantially uniform.

Abstract: A liquid crystal module is disclosed. The liquid crystal module includes a light source, a light guiding device, and a coupling device. The light guiding device is arranged at a light emitting side of the light source and is spaced apart from the light guiding device by a distance. The coupling device is installed between the light source and the light guiding device for controlling a coupling distance therebetween. The coupling device keeps the coupling distance between a light guiding plate and a light source to remain a predetermined value. In this way, the coupling efficiency of the liquid crystal module is not affected by the difference of LEDs or heat inflation so as to enhance the coupling efficiency.

Abstract: Discussed are a backlight unit and an LCD device using the same. The backlight unit according to an embodiment includes a light source; a light guide plate facing the light source; a plurality of protrusion patterns provided on the bottom of the light guide plate; an optical sheet disposed on the light guide plate; and a reflector disposed under the light guide plate, wherein each of the plurality of protrusion patterns has a cross-sectional structure comprising a first side that is a portion of the bottom of the light guide plate, a second side that extends from one end of the first side, and a third side that extends from the other end of the first side.

Abstract: A light source module including a light guide plate, a first light-emitting device and a second light-emitting device is provided. The light guide plate has a first surface, a second surface and a light incident surface. The light incident surface includes a first and second light incident sub-surfaces and a first end, wherein the second light incident sub-surface is oblique relative to the first light incident sub-surface. The first light-emitting device is disposed beside the first light incident sub-surface, and the second light-emitting device is disposed beside the second light incident sub-surface. The light guide plate has a visual area, and the visual area has a first corner located beside the first end, a light-emitting range of the second light-emitting device covers the first corner, and the second light incident sub-surface is located between the first end and the first light incident sub-surface.

Abstract: A light guide plate includes a light incident surface, a light emitting surface and a light guide surface. The light incident surface receives light from an external light source. The light emitting surface emits outward the light received through the light incident surface. The light guide surface faces the light emitting surface and includes a diffusion pattern formed thereon. The diffusion pattern includes a plurality of porous particles and a plurality of spheroidal particles, and the porous particles have pores formed therein and on surfaces thereof.

Abstract: A light guide plate has a light introduction part having an end face configured to have light incident thereon, and a light guide plate body provided continuously to the light introduction part and comprising a thickness smaller than maximum thickness of the light introduction part. The light guide plate body has a light emitting surface configured to emit light incident from the end face. A directivity conversion pattern is provided on at least one of a face on a light exit side and a face opposite to the face. The directivity conversion pattern converts directivity spread in a thickness direction of the light introduction part to a directivity characteristic which is inclined in a direction parallel to a face direction of the light introduction part. A light reflection wall is provided on the end face.

Abstract: A spread illumination apparatus includes: a light source; and a light guide plate having a light entrance surface on which the light source is disposed, and a light exit surface through which light introduced from the light entrance surface is emitted, wherein the light guide plate includes a light entrance wedge portion which has an inclined surface and of which thickness is thinner from the light entrance surface side toward the light exit surface side, the inclined surface includes a first, a second, and a third inclined surface portions, and an average inclination angle of the second inclined surface portion at an arbitrary cross section perpendicular to the light entrance surface and the light exit surface along the light entrance surface in a longitudinal direction is configured to be larger than average inclination angles of the first inclined surface portion and the third inclined surface portion.

Abstract: A light-guide apparatus comprising a light-guide plate for guiding light rays and a plurality of light extraction features is described. The light extraction features comprise a transparent material applied to the light-guide plate so as to form an uneven surface. The transparent material may comprise a textured ink applied to the surface of the light-guide plate via a printing process. The incorporation of an uneven surface provides micro-lens like elements on the surface of the extraction feature which have a higher aspect ratio and so lend themselves to the refraction of the light out of the light-guide plate. In this way a device is produced wherein the size, height, location and surface profile of the extraction features can be carefully controlled. As a result the described light-guide apparatus provides for a highly efficient and relatively uniform light output.

Abstract: A backlight assembly includes a first light source unit including n light emitting members; and a light guide plate including a first side adjacent to the first light source unit, and a first groove adjacent to a first end of the first side.

Abstract: A backlight module includes a light guide plate and only one light source. The light guide plate has a main body and protrusions. The main body has a light emitting surface, a light incident surface, a first side surface, and a second side surface. The protrusions are positioned on the light incident surface, and face the light source. The protrusions diffuse the light rays from the only one light source and guides the light rays into the main body. The light emitting surface has a light emitting area and a marginal area surrounding the light emitting area. The marginal area has a light diffusion area adjacent to the light incident surface and the first side surface. An included angle between the light incident surface and the first side surface is an obtuse angle. An included angle between the light incident surface and the second side surface is an obtuse angle.

Abstract: A backlight is disclosed and includes a visible light transmissive body primarily propagating light by TIR with a light input surface and a light output surface and a light guide portion and a light input portion. The light guide portion has a light reflection surface and a light emission surface. The light input portion has opposing side surfaces that are not parallel. One of the opposing surfaces is co-planar with either the light emission surface or the light reflection surface. A light source is disposed adjacent to the light input surface. The light source emits light into the light input portion. A reflective layer is disposed adjacent to or on the opposing side surfaces.

Abstract: A light guide plate and a backlight module are provided. The backlight module includes a light source and the light guide plate. The light source includes a light emitting surface. The light guide plate includes a light incident surface, a first surface, and a second surface, wherein the first surface is opposite to the second surface. The light guide plate is disposed at a side of the light source. The light incident surface of the light guide plate is opposite to the light emitting surface of the light source. The light incident surface is connected to the first surface and the second surface and includes a first curved surface and a second curved surface. The first curved surface is adjacent to the first surface, and the second curved surface is adjacent to the second surface. The first curved surface is a concave surface.

Abstract: Illumination devices and methods of making same are disclosed. In one embodiment, an illumination apparatus includes a light source, a light guide having a planar first surface, a first end and a second end, and a length therebetween, the light guide positioned to receive light from the light source into the light guide first end, and the light guide configured such that light from the light source provided into the first end of the light guide propagates towards the second end, and a plurality of light turning features that are configured to reflect light propagating towards the second end of the light guide out of the planar first surface of the light guide, each light turning feature having a turning surface and an interferometric stack formed on the turning surface.