Abstract: The present disclosure describes a flat lightguide configured to be illuminated by one or more small light sources, such as light emitting diode (LED) light sources. The one or more small light sources inject light into an end of a stepped lightguide that includes light redirecting elements capable of changing the direction of the light to exit perpendicular to the stepped lightguide and enter an edge of a planar lightguide.

Abstract: The present invention provides a light guide plate, a backlight module, and a method for manufacturing the light guide plate. The light guide plate include a light guide plate body, on which at least two layers of dots having a refractive index different from the light guide plate body are distributed. According to the light guide plate of the present invention, the dots are distributed on at least two layers, rather than merely on a single interface as that in the traditional light guide plate. As a result, the dot density in an identical region of the light guide plate will exceed the limit of 100%, and thereby a better light guide effect will be achieved. In addition, according to the method of the present invention, the light guide plate is manufactured based on a 3D printing technology.

Abstract: A prism sheet and a liquid crystal display (LCD) device having the same are provided to improve optical efficiency of the prism sheet by changing a refractive angle of light, which is incident at an angle less than a minimum angle to an effective angle, by forming a concave surface on a bottom surface of prism patterns. Optical efficiency of the prism sheet is also improved by refracting light, which is incident at an angle more than a maximum angle, toward the adjacent prism pattern, by forming the bottom surface of the 2nth prism pattern in a groove of a base film.

Abstract: In an imaging device having a waveguide, a surface of an insulating film covering a seal ring is prevented from getting rough. A pixel region, a peripheral circuit region, and a seal region are defined over a semiconductor substrate. After formation of a pad electrode in the peripheral circuit region and a seal ring in the seal ring region, a TEOS film is so formed as to cover the pad electrode and the seal ring. A pattern of a photoresist for exposing a portion of the TEOS film covering the pad electrode and the seal ring, respectively, is formed and etching treatment is subjected to the exposed TEOS film. Then, after the pattern of the photoresist has been formed, a second waveguide holding hole is formed in the pixel region by performing etching treatment.

Abstract: The invention relates to a document scanning device having a document bed for placement of an identification document, a detection apparatus for detecting an actual position of the identification document on the document bed and a display apparatus for displaying a reference to the target position of the identification document on the document bed.

Abstract: A backlight module includes a light guide plate; a first light source arranged along a first side of the light guide plate; a plurality of second light sources arranged along at least one of the two sides perpendicular to the first side, wherein the plurality of second light sources have different color temperatures, and values of the color temperatures of the second light sources at different positions are determined according to the light absorption characteristics of the light guide plate so as to compensate for the light absorbed by the light guide plate corresponding to the color temperature of the second light source.

Abstract: A luminaire is provided. A main surface of a light-guiding panel included in the luminaire includes a reflecting area having a plurality of approximately conical recesses. An angle ? formed by a lateral surface of each of the recesses and the main surface of the light-guiding panel satisfies a condition defined by a distance D from a center position of a light source to a center position of the reflecting area, a distance H from an illumination target surface to the center position of the light source, an angle ? which the light-guiding panel forms with a horizontal plane, a refractive index n of the light-guiding panel, and a surface roughness Ra of the lateral surface of each of the recesses.

Abstract: Disclosed are optical connectors for electronic devices that are disposed at a hinge of the device. The electronic device has an optical connector comprising a base portion having a hinge with a hinge attachment structure and a base connector having one or more base optical channels, and a display. The display comprising a display attachment structure and a display connector having one or more display optical channels for mating with the base connector. The concepts disclosed allow an optical connection for electronic devices having a display that is separable from a base portion.

Abstract: An illumination device for illuminating at least one spatial light modulator device. At least one light source device with at least one light source illuminates the at least one spatial light modulator device; a light guiding element through which light emanating from the light source propagates; and at least one light decoupling element arranged on top or inside of the light guiding element. The at least one light decoupling element decouples of a wave field of the light which propagating in the light guiding element into the direction of the spatial light modulator device. The light guiding element has a refractive index which is lower than or at least equal to the refractive index of the at least one light decoupling element. The entrance angle of the wave field entering the light decoupling element is determined by the difference between the refractive indices according to a particular equation.

Abstract: A ferrule (10) has a receiving area for receiving and securing an optical waveguide (20) and an optical element (13) for receiving light from an optical waveguide received and secured at the receiving area and changing at least one of a divergence and a propagation direction of the received light. A plurality of registration features (30, 31, 32, 33, 34) are configured to permit a stacking of the ferrule in a stacking direction such that the ferrules in the stack are aligned relative to each other along a length of the ferrule and along a direction perpendicular to the stacking direction.

Abstract: An image pickup apparatus includes a semiconductor layer that constitutes a pixel circuit region and a peripheral circuit region. An element isolation portion is disposed in the pixel circuit region and the peripheral circuit region, defines an element portion of the semiconductor layer, and contains an insulator. The element isolation portion in the pixel circuit region has a hydrogen concentration 10 times or more higher than the hydrogen concentration of the element isolation portion in the peripheral circuit region.

Abstract: A light pipe for transmitting lights includes a light incident wall, a light radiation wall, a first side wall, and a second side wall, the light incident wall opposite the light radiation wall, the first side wall opposite the second side wall, the first side wall and the second side wall are connected between the light incident wall and the light radiation wall, respectively. the first side wall and the second side wall are parabolic and having focal points between the first side wall and the second side wall, the first side wall and the second side wall are parabolic making the lights passing through the light radiation wall be uniformly distributed.

Abstract: Lighting assembly comprises an optical fiber light guide panel member having a light conducting core cladded on opposite sides by cladding made of optically transparent material having a lower index of refraction than the light conducting core to cause total internal reflection of conducted light within the light conducting core at the core-cladding interface. Disruptions at one or more areas of the cladding cause conducted light within the light conducting core to be emitted from one or more areas of the panel member. Electrical circuitry is bonded to one or both sides of the cladding. One or more LEDs embedded in the panel member are in electrical conduct with the electrical circuitry and optically coupled to the light conducting core.

Abstract: Provided is an edge-light type illumination device capable of increasing luminance directly thereunder and capable of providing anisotropy to the luminance distribution. Light to be emitted from an emission surface (2d) of a light-guide plate (2) fulfills a condition (1) Etotal/Em>2.0 and a condition (2) Etotal(20°,0°)/Etotal(20°,90°)>1.2.

Abstract: Optically patterned waveguides and systems employing optically patterned waveguides are provided. The optically patterned waveguide is configured for use in a lighting system and arranged perpendicular to an overhead structure, such as a ceiling. The optically patterned waveguide includes major surfaces that are patterned with a plurality of elongated facets formed into the major surfaces and extending in a direction parallel to the length of the waveguide. The optically patterned waveguide provides illumination patterns having increased uniformity.

Abstract: The present invention provides an optical touch system, applied to an electronic apparatus having at least a physical plane. It comprises: an optical unit set on the physical plane and configured to produce a first optical effect; an image acquisition unit set on the physical plane, at least a part of the optical unit being within an acquisition range of the image acquisition unit, a touch operation area being formed by the image acquisition unit and the optical unit; the image acquisition unit configured to capture an image having a second optical effect which is formed on the first optical effect after an operation body for operating the electronic apparatus enters the touch operation area; a processing unit being connected with the image acquisition unit and configured to determine the range of the operation body in the touch operation area according to the image having the second optical effect.

Abstract: An optical element includes a base, and primary structures and secondary structures disposed on a surface of the base, each of the primary structures and secondary structures being a projection or a depression. The primary structures constitute a plurality of rows of tracks on the surface of the base and are periodically repeatedly arranged at a fine pitch equal to or smaller than a wavelength of visible light. The secondary structures are smaller in size than the primary structures, and are provided between the primary structures, in the gaps in the arrangement of the primary structures, or on the surfaces of the primary structures.

Abstract: A light guide plate including a first substrate, a second substrate opposite to the first substrate, a plurality of first microstructures, a plurality of second microstructures, and a plurality of third microstructures is provided. The first substrate has a light emitting surface, a first bottom surface, and a light incidence surface. The second substrate has a top surface and a second bottom surface. The top surface is located between the first substrate and the second bottom surface. The first microstructures and the second microstructures are disposed on the light emitting surface and the second bottom surface respectively and extend along a first direction parallel to the light incidence surface respectively. The third microstructures are connected between the first bottom surface and the top surface and extend along a second direction perpendicular to the light incidence surface respectively. A light source module is also provided.

Abstract: Disclosed is a light source device. The light source device includes: a light guide plate; a reflector disposed under the light guide plate; a light source unit optically coupled to the light guide plate; and a photo luminescent film disposed between the light guide plate and the light source unit, wherein the photo luminescent film includes at least two partitioned areas, and wherein a first fluorescent material included in at least one area of the at least two areas is different from a second fluorescent material included in the other areas.

Abstract: A beam collimated light emitting module with a light color mixed chamber includes a light holder, a light source assembly located on the light holder, an optical lens covering the light source assembly, and a reflector. The optical lens includes a first light exit surface, a light entrance surface, and a second light exit surface. The first light exit surface has a round-shaped concave surface formed by recessing the first light exit surface, and the aspheric curvature of the concave surface is gradually decreased in an outward direction away from the center of the optical lens. The reflector surrounds the optical lens. When the light source assembly emits light, the bluish white light and the yellowish white light of the light source assembly are refracted by the concave surface, and next the bluish white light and the yellowish white light are reflected by the reflector.

Abstract: An encapsulated integrated photodetector waveguide structures with alignment tolerance and methods of manufacture are disclosed. The method includes forming a waveguide structure bounded by one or more shallow trench isolation (STI) structure(s). The method further includes forming a photodetector fully landed on the waveguide structure.

Abstract: An encapsulated integrated photodetector waveguide structures with alignment tolerance and methods of manufacture are disclosed. The method includes forming a waveguide structure bounded by one or more shallow trench isolation (STI) structure(s). The method further includes forming a photodetector fully landed on the waveguide structure.

Abstract: According to one embodiment, a backlight includes a light source, a light guide plate provided laterally to the light source to convert light from the light source into planar light, and multiple optical sheets provided in a laminated manner between the light guide plate and a liquid crystal panel. A liquid crystal display device includes a frame surrounding and holding the liquid crystal panel and the backlight. The frame includes fitted portions recessed in positions opposed to the optical sheets. The optical sheets each include protrusions provided on both sides close to the light source to be fitted into the respective fitted portions. The optical sheets each further include a stuck portion provided on the side near the light source and stuck to a double-sided adhesive tape.

Abstract: The present invention discloses a LED backlight module, which comprises a backplane; a side-type backlight source, which comprises a backlight source substrate and multiple light emitting diodes provided on the backlight light source substrate; a reflector, which is provided on the backplane; multiple light guides provided on the reflector in parallel, each light guide being provided with at least one light-incident surface and one light-emitting surface, the light-incident surface of the light guide being opposite to the LED; diffusers provided on the multiple light guides, which are opposite to the light-emitting surface of the light guide; and an optical film set, which is located above the diffuser. The embodiment of the present invention further discloses the corresponding liquid crystal display. According to the embodiment of the present invention, it can save the amount of LEDs, which is beneficial for the narrow frame of the liquid crystal display panel.

Abstract: To provide a lateral light emitting device that can prevent coupling efficiency in a fused portion of a rod lens and a prism from being deteriorated, can set an outside diameter extremely small, and set the distance to a beam waist long. A lateral light emitting device includes an optical fiber 2, a rod lens 3, one end of which is fused to the end surface of the optical fiber 3, and a prism 4 fused to the other end of the rod lens. The prism has a base shape obtained by cutting a part of the circumference of a cylinder and forming a flat emission surface 4c parallel to an axial line. In a fused portion of the rod lens and the prism, the outside diameter of a fused end surface of the rod lens is equal to or smaller than the smallest diameter of a fused end surface of the prism. The fused end surface of the rod lens does not protrude from the fused end surface of the prism. A center O1 of the fused end surface of the rod lens and a center O2 of a circular arc of the fused end surface of the prism are offset.

Abstract: A backlight unit includes a light source which emits a first light, a light guide bar extending in a first direction, where the light guide bar receives the first light through an incident surface thereof, and guides the first light to convert the first light to a second light, and a control pattern disposed on a surface of the light guide bar, which extends in the first direction, where the control pattern converts the second light to a third light, and has a shape extending in the first direction to control an exit angle of the third light.

Abstract: A solar concentrator, comprising: a substantially planar light insertion layer being made of light-transmissive material and including: an optical entry surface, an array of optical redirecting elements, and an array of optical exits being, each of the optical redirecting elements receiving and redirecting light towards an optical exit; a substantially planar light guide layer being made of light-transmissive material and including: a first surface for receiving light exiting the light insertion layer, a second surface opposite the first surface, the first and second surfaces being structured and arranged with one respect to the other such that light entering the light guide layer is guided to at least one optical output surface via a series of reflections; and an array of optical apertures optically interconnecting the light insertion layer and the light guide layer formed by at least one deformed optical coupling element. A method of manufacture thereof is also disclosed.

Abstract: A display includes a lightguide having an array of light extraction features that can be actively controlled to direct varying amounts of light received from one or more light sources arranged at the edge of the display. The light extraction features include two fluids with different refractive indices. The relative positions of the fluids in each light extraction feature are controlled, e.g., by electrowetting, to control the amount of light directed toward the display.

Abstract: A light guide plate includes a light exit surface, a light guide plate bottom surface, and at least one light incidence surface. The light exit surface and the light guide plate bottom surface are opposite to each other. The light incidence surface is connected to the light exit surface and the light guide plate bottom surface. The light guide plate is of a wedge configuration and has an end that is close to the light incidence surface and has a thickness greater than a thickness of an end thereof distant from the light incidence surface. The light guide plate includes a hollow wedge cavity that includes a hollow wedge cavity bottom surface adjacent to the light guide plate bottom surface. The hollow wedge cavity receives therein a reflector plate laminated on the hollow wedge cavity bottom surface and having a surface facing the light exit surface and including reflection projections.

Abstract: The present invention relates to an optical light mixer providing a homogenized and uniform light beam where the optical light mixer is formed of a solid transparent material and light enters the optical light mixer through an entrance surface and is reflected through said body to an exit surface where said light exits said optical light mixer. The optical light mixer comprises a first part formed as a pyramid frustum where the top surface of the pyramid frustum forms the entrance surface and a second part formed as a cone frustum and where the bottom surface the cone frustum forms the exit surface. The present invention relates also to an illumination device comprising a number of light sources and such optical light mixer.

Abstract: The present disclosure relates to the technical field of light emission of an LED and discloses a light emitting diode assembly, a backlight module, a liquid crystal display and an illumination device. The LED assembly comprises a lamp base and at least one pair of LED dies. The lamp base has a mounting groove. A pair of the LED dies are mounted at a bottom surface of the mounting groove, and two LED dies in the pair of LED dies are disposed symmetrically about an axis of the mounting groove. Among angles formed by intersection of planes where light exit surfaces of the two LED dies lie, an angle facing the bottom surface of the mounting groove is greater than 0 degree and less than 180 degrees. The light emitting diode assembly has a larger light exit angle and exhibits a simple structure.

Abstract: An encapsulated integrated photodetector waveguide structures with alignment tolerance and methods of manufacture are disclosed. The method includes forming a waveguide structure bounded by one or more shallow trench isolation (STI) structure(s). The method further includes forming a photodetector fully landed on the waveguide structure.

Abstract: The neutralization units 12a and 12b are arranged between the primary transfer positions and the cleaning units 11a and 11b, and, irradiate a region on the image supporting body 2a with first neutralization light 131, the regions spanning from a position facing the primary transfer position to a position facing the cleaning unit 11a. The neutralization units 12a and 12b irradiate a region on the image supporting body 2b with second neutralization light 132, the region spanning from a position facing the developing unit 16b to a position facing the primary transfer position. The neutralization units 12a and 12b include a first reflective part and a second reflective part provided at different positions on a side face of the light guiding body. The first reflective part forms the light 131 and the second reflective part forms the light 132 by reflecting the light from the neutralization light source.

Abstract: A planar light source device with highly uniform intensity and high light utilization efficiency, and a display apparatus incorporating the same, are provided. A light guide plate, configured by a material such as plate-shaped and transparent acryl resin, polycarbonate resin, or glass, causes incident light to propagate within the light guide plate and then to exit the light through an exit surface as a surface emitting light. A first recess is formed substantially in the center of the exit surface. The first recess is cylinder-shaped, and on a bottom thereof is provided a lens that refracts incident light from a light source, in a direction away from the center of a circle on the bottom.

Abstract: A lighting assembly includes a light source to emit on-axis light rays at smaller angles relative to an optical axis of the light source, and off-axis light rays at larger angles relative to the optical axis and spectrally different from the on-axis light rays. The lighting assembly additionally includes a light guide having a light input edge adjacent the light source and opposed major surfaces between which light from the light source propagates by total internal reflection. The light input edge has an edge feature aligned with the light source to receive light therefrom. The edge feature specularly redirects the on-axis light rays and the off-axis light rays differently to increase overlap between the on-axis light rays and the off-axis light rays within the light guide. The increased overlap reduces spatial color variation of light extracted from the light guide between locations at different angles from the optical axis.

Abstract: The present invention relates to an apparatus for fabricating a light guide panel which can improve light efficiency and brightness, and a backlight unit having the light guide panel. The backlight unit includes a light source for generating a light, and a light guide panel for guiding the light incident thereon from the light source, the light guide panel having an upper pattern which is formed on a front side thereof for emitting the light guided thus to upward and a lower pattern which is formed on a backside thereof for reflecting or refracting the light, wherein the lower pattern of the light guide panel is formed in an intaglio pattern having a vertical angle at which two inclined planes meet, and one of the two inclined planes the light from the light source incident thereon has an angle of 45˜55°.

Abstract: An optical compound sheet for a backlight module includes a base layer formed of a transparent material, a plurality of structured patterns formed on the base layer at a predetermined interval, a light-condensing layer which includes a surface coating including nano-particles distributed on the surface of the structured patterns at the thickness of 0.01 ?m to 1 ?m, and an anti-scratching layer which is coated under the base layer at the thickness of 0.1 ?m to 3 ?m by using the UV-curable bond containing nano-particles. While improving the anti-scratching performance by using the surface coating and the anti-scratching layer containing the nano-particles, the wet-out and Moire phenomena are greatly reduced by the finely separate coating of the nano-particles, thereby achieving both the light-condensing function and light-diffusing function.

Abstract: A liquid crystal display device having brightness uniformity at its front and lateral sides is provided according to one or more embodiments. In one embodiment, the liquid crystal display device includes a reflection sheet reflecting light, an optical plate including a substrate for guiding light, a height-varying portion formed on one surface of the substrate, not facing the reflection sheet, and a prism pattern formed on the height-varying portion, and a plurality of light sources arranged on one lateral surface of the optical plate in a first direction so as to correspond to a position of the height-varying portion having a height not greater than an average height from the one surface of the substrate to the height-varying portion, wherein the prism pattern extends in a second direction substantially perpendicular to the first direction, and the average height is in a range of about 0.1% to about 10% of the thickness of the substrate.

Abstract: Provided is a display device. The display device includes a light guide plate; a light source disposed at a lateral side of the light guide plate; and an optical path conversion unit converting a path of the light emitted from the light source. A first area corresponding to a light emitting plane of the light guide plate and a second area adjacent to the first area are defined. The optical path conversion unit is disposed in the second area.

Abstract: In an optical waveguide 10 with a light-emitting element to be used in the present invention, a core includes: a main path; and a plurality of branched paths branched at a plurality of branched points from the main path. The main path has two sides faced to each other, in which one side has a plurality of branched points and the other side does not have any branched points. The plurality of branched points are provided on a straight line substantially parallel to a light guiding direction of the main path. The width of the main path becomes narrower as the main path moves away from a light-emitting element. An angle ? formed by the other side without a branched point and the light guiding direction of the main path is 0.3 to 1.7°.

Abstract: Different interfacial processes for producing photoactive additives are disclosed. Generally, the photoactive additives are formed from a photoactive moiety, a first linker moiety, and a diol chain extender. The resulting additives can be crosslinked with other polymers upon exposure to UV radiation.

Abstract: Example fiber optic enclosures include a cable spool assembly and a cover. Each disc of the cable spool assembly has a removable section that extends radially outwardly from a central portion of the disc. The cable spool assembly has a first diameter when the removable sections are attached to the discs. The central portion of each disc has a second diameter. The cover has a lateral dimension that is smaller than the first diameter of the cable spool assembly and larger than the second diameter of the cable spool assembly. Certain types of spool assemblies include a termination region including a plurality of adapters that rotate in unison with the first disc of the cable spool assembly.

Abstract: An optical active fiber is configured with an asymmetrically-shaped core having at least one long axis and a shortest axis which extends transversely to the long axis. The outmost cladding of the active fiber is configured with a marking indicating the orientation of the short axis. The marking allows for bending the fiber so that the shortest axis extends along and lies in the plane of the bend thereby minimizing distortion of a mode which is guided by the asymmetrically-shaped core as light propagates along the bend.

Abstract: A backlight module includes a light guide plate and a number of light sources. The light guide plate includes a frosted light incident surface, diffusion structures positioned on the frosted light incident surface, and dot-shaped micro-recesses positioned on the diffusion structures. The light sources face the frosted light incident surface.

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 receiving device has a light receiving section for receiving a remote control signal light beam, and a light guide section for guiding the light beam to the light receiving section. The light guide section has a first reflection surface for reflecting the light beam to the light receiving section, the first reflection surface being disposed to oppose obliquely at a sharp angle to an entrance plane, and a second reflection surface for guiding the remote control signal light beam, the second reflection surface being disposed between the entrance plane and the first reflection surface. The first reflection surface includes a circular arc curved surface curved outward in a part closer to the entrance plane and farther from the light receiving section, and a linear inclined surface in a part approaching the light receiving section from the curved surface.

Abstract: A solar light concentration plate comprises a first hologram which receives solar light and diffracts incident light in a range of an incident angle, and first and second light guides respectively disposed on both sides of the first hologram, wherein at least one of the first and second light guides has an outer surface substantially inclined to an inner surface of the at least one of the first and second light guides.

Abstract: An X-ray waveguide showing a small propagation loss and having a waveguide mode with its phase controlled is provided. The X-ray waveguide including: a core for guiding an X-ray in a wavelength band that a real part of the refractive index of a material is 1 or less; and a cladding for confining the X-ray in the core, in which: the X-ray is confined in the core by total reflection at a interface between the core and the cladding; in the core multiple materials having different real parts of the refractive index are periodically arranged; and a waveguide mode of the X-ray waveguide is such that the number of antinodes or nodes of an electric field intensity distribution or a magnetic field intensity distribution of the X-ray coincides with the number of periods of the periodic structure in a direction perpendicular to a waveguiding direction of the X-ray in the core.

Abstract: Optical and thermal splines are integrated in the external envelope of a non-planar lamp allowing the optical output of discrete light sources such as LEDs to be distributed for uniform output and the achievement of desired light distributions such as omnidirectional output. Integrated thermal splines and perimeter location of light sources allow for improved thermal management without significantly compromised optical performance.

Abstract: An end of a light guide plate used for a liquid crystal display and a lighting unit, which is positioned on one side in a first direction, is provided with a depressed portion, and another end of the light guide plate, which is positioned on the other side in the first direction, is provided with a projecting portion. Using the depressed portion and the projecting portion, the light guide plate is placed in a predetermined position of a frame body. The depressed portion and the projecting portion are formed at positions opposite each other in the first direction, and the projecting portion is equal to or smaller than the depressed portion in size.