57 results about "Light guide" patented technology

Extended area lighting devices include a light guide and diffractive surface features on a major surface of the light guide, at least some diffractive surface features adapted to couple guided-mode light out of the light guide. The diffractive features include first and second diffractive features disposed on respective first and second portions of the major surface. A patterned light transmissive layer, including a second light transmissive medium, optically contacts the second diffractive features but not the first diffractive features. A first light transmissive medium optically contacts the first but not the second diffractive features. The first and second portions may define indicia, and the first and second diffractive features provide low distortion for viewing objects through the light guide such that the indicia is not readily apparent to users when guided-mode light does not propagate within the light guide. Optical films having such diffractive features are also disclosed.

A touch indication device comprises a light guide structure for passing light of a light source via total internal reflection. A touch surface disturbs the total internal reflection when touched, causing light to leave the light guide structure. A light enhancement layer converts the light leaving the light guide and sends the converted light to a light detector. The light enhancement layer amplifies the intensity and/or changes the color of the light leaving the light guide. The detector determines the position of the touch on the touch surface based on the light from the light enhancement layer.

Endoscopic arrangement comprising a first distal end, an imaging device arranged at the first distal end, a first proximal end for connection to a supply unit, a data transmission element embodied as a light guide and having a second distal end and a second proximal end, and comprising an electro-optical converter, wherein the electro-optical converter is configured to convert digital data generated by the imaging device into an optical signal, wherein the data transmission element at its second distal end is optically coupled to the electro-optical converter for coupling the optical signal into the data transmission element, wherein the imaging device comprises at least two data outputs each having a digital output signal, and wherein a first signal converter is provided between the imaging device and the electro-optical converter for combining the digital output signals into a digital combined output signal.

A display apparatus including a backlight module and a transmissive display panel is provided. The backlight module includes a light guide plate, a patterned light scattering structure, and a light emitting device. The light guide plate has a first surface, a second surface opposite to the first surface, and a light incident surface connecting the first surface and the second surface. The patterned light scattering structure is disposed on the light guide plate or inside the light guide plate. The patterned light scattering structure includes a plurality of light scattering strips. The light emitting device is configured to emit an illumination light and the light incident surface is disposed on the path of the illumination light. The light scattering strips are configured to scatter the illumination light. The transmissive display panel is disposed beside the backlight module. The first surface faces the transmissive display panel.

An optical touch panel including a light guide plate, at least one light-emitting element and a plurality of optical sensing elements and a touchscreen using the same are provided. The light guide plate has a plurality of lateral surfaces, a top surface, a bottom surface and a light extraction structure. The light-emitting element provides a light beam entering the light guide plate. The optical sensing elements are disposed under the bottom surface of the light guide plate. Each of the optical sensing elements has a sensing surface not parallel to the bottom surface of the light guide plate. The optical sensing elements are disposed at an illuminated region of the light beam provided by the light-emitting element. By the light extraction structure, a second portion of the light beam entered the light guide plate is scattered to the optical sensing elements from the bottom surface.

A light emitting sheet module includes a light guiding sheet to cover a plurality of key switches, at least one LED disposed on at least one end portion of the light guiding sheet, and a circuit board disposed on the one end portion of the light guiding sheet on which the LED is disposed. When the light emitting sheet module is, mounted on a switch board, it is capable of adaptation to key switches in a wide variety of forms and to illuminate the key switches with light emission of high brightness.

An optical fiber 13, of which one end 13a is optically coupled to a laser light source 12, for propagating, from the one end 13a to other end 13c, a laser light emitted from the laser light source 12, and a light-guiding plate 11 including a light-guiding section 11b in which a plurality of right prisms of the same shape for extracting the laser light by contacting the optical fiber 13 are arranged parallel to each other in the same direction at equal intervals, and also including a planar section 11c for diffusing the laser light extracted from the light-guiding section 11b and emitting the diffused laser light from one main surface, are provided. The optical fiber 13 is bent more than twice to form a plurality of straight line portions arranged parallel to each other at unequal intervals, and the optical fiber 13 and the light-guiding plate 11 are positioned such that the laser light is extracted at equal intervals from each of the plurality of straight line portions.

A liquid crystal display apparatus is provided which has two or more options in selection of the range of viewing angles. A surface light source device according to the invention has a main surface from which light is emitted, and includes a plurality of light guide plates corresponding to a plurality of regions obtained by dividing the main surface in parallel; an optical film provided on the exit surface side of the light guide plates; and a light driver that controls the turning on and off of the plurality of light guide plates. The optical film includes a light-guide slit film which transmits light that is emitted from the light guide plates and that is within a certain range of angles.

The invention discloses a backlight module and a manufacturing method thereof and a display device and belongs to the technical field of display. The backlight module comprises a light guide plate, a light bar and a rubber frame. The light bar comprises a flexible circuit board and a plurality of backlight lamps which are arranged on the flexible circuit board; the rubber frame is arranged around the light guide plate, and a gap exists between the rubber frame and the light guide plate, the flexible circuit board is arranged on the rubber frame, the plurality of backlight lamps are located in the gap, a first positioning portion is arranged on the flexible circuit board, a second positioning portion is arranged on the rubber frame, and the first positioning portion and the second positioning portion can be matched to position the flexible circuit board. The backlight module disclosed by the invention solves the problem that a connecting terminal of the flexible circuit board cannot be effectively welded to the display panel as the flexible circuit board deviates, so that the connecting terminal of the flexible circuit board is effectively welded to the display panel favorably. The invention is used for the backlight module.

A dual display structure including a light source, a light guide plate, a first display module and a second display module is provided. The light guide plate includes a light incident surface, a first light exiting surface and a second light exiting surface. The first and second display modules are respectively disposed at one side of the first and second exiting surfaces in parallel and back to each other. Light emitted from the light source enters the light guide plate through the light incident surface and emits to the first display module and the second display module through the first light exiting surface and the second light exiting surface.

The invention discloses a lamp optical system for an automobile. The lamp optical system for the automobile comprises two light sources, a polyhedral thick-wall light guide and two light inlet areas.The two light sources are homochromatic or non-homochromatic light sources. The two light inlet areas guide the light rays from the two light sources into the thick-wall light guide. The light rays from the two light sources enter from two outwards protruding surfaces of the polyhedron, are collimated and then are emitted from the same light outlet surface after being reflected by different optical coupling surfaces or a coupling surface set. Therefore, the space utilization rate of an automobile lamp is improved, and different functions of the automobile lamp are realized.

An endoscopic light guide for guiding illumination light to an observation target is equipped with: an optical fiber; and a radiation mode inducing means for causing propagation mode light propagating through the optical fiber to make side face radiation in the vicinity of an output facet of the optical fiber through which the propagation mode light exits, thereby converting the propagation mode light to radiation mode light such that the radiation mode light can be utilized as the illumination light.

The invention discloses an area light source equipment, it includes at least a light emitting diode, at least a reflector and an optical leading board, which at least includes an incident face, an emergent face, an underside which is according to the emergent face, and several flanks. The reflector is a groove with two lateral walls, it is located on one side of the optical leading board and clamp with it to form a cavity to contain the light emitting diode.

A display includes a display panel and a backlight module. The backlight module is configured below the display panel and includes a light guide plate (LGP), a light source, an optical film, and a pad. The light source is located near the LGP. The optical film is configured on the LGP. The pad is located between the optical film and the display panel. A first surface of the pad is fixed to the optical film, and a second surface of the pad is slidable relative to the display panel.

A light guide plate includes a base plate and a plurality of light deflecting elements. The light deflecting elements are formed on one surface of the base plate and arranged based on two coordinate axis directions of the surface of the base plate. Each row of the light deflecting elements substantially aligned along one coordinate axis direction has a distribution offset toward the other coordinate axis direction.

The invention relates to a photoelectric liquid level sensor, which comprises a shell, a photoelectric receiver, a control circuit and at least one group of light guide components, and is characterized in that each light guide component comprises a photoelectric emitter, a first light guide column, a second light guide column and a first reflecting surface; the control circuit is used for controlling the photoelectric emitter to emit signal light and detecting whether the photoelectric receiver receives the signal light or not; the first light guide column guides the signal emitted by the photoelectric emitter to the first reflecting surface; and the first reflecting surface reflects the light guided out by the first light guide column to the second light guide column. And the second lightguide column is made of a transparent light guide material and guides the signal reflected by the first reflecting surface to the position of the photoelectric receiver. According to the invention, as the signal light is transmitted in the light guide column, the loss of the signal light in long-distance transmission can be greatly reduced, the testing distance is greatly increased, and the sensor can be mounted at the top of the liquid container. In addition, stray light interference received by the photoelectric receiver is little, and the detection result is accurate and stable.

The invention discloses an LED panel lamp structure with a novel lighting manner. The panel lamp comprises frames, a back plate, a light guide plate, a diffusion plate, a light source plate and a drive. The light source plate is adhered to one frame I; the surface of the light guide plate is provided with a reflecting film in an adhered manner; the diffusion plate, the light guide plate and the back plate are integrated and clamped in the frame I provided with the light source plate and the other three frames; the diffusion plate is mounted at the bottom of a panel lamp and is opposite to the reflecting film of the light guide plate; the back plate is mounted at the top of the panel lamp and is arranged on the same side with the reflecting film of the light guide plate. A structure of the light source plate is mounted on the LED panel lamp, the assembling procedures are simple, a few materials are required, cost of raw materials of products is reduced, cost consumption of manual assembly is reduced, assembly time is shortened, producing efficiency of the products is improved, and the structure is adaptive to promotion.

A multi-functional keypad module for a mobile phone includes a circuit board, a light-emitting element, a soft light-guiding rubber layer, an optical touch layer, and a key layer. The soft light-guiding rubber layer is provided on the circuit board and has a plurality of protrusions each corresponding to the circuit board; thereby a feedback feeling from a pressing action and a light-guiding effect can be obtained. The optical touch layer is provided on the soft light-guiding rubber layer, in order to continue the optically enhanced touch-control and the feedback feeling. The key layer is provided on the optical touch layer, with a plurality of keys respectively corresponding to one of the protrusion, thereby completes and achieves the optically enhanced touch-control effect and feedback feeling. Via the above arrangement, the keypad module of a mobile phone has multiple functions of light guiding, touch-control, and feedback feeling from a pressing action.

The present invention relates to a backlight for a liquid crystal display (LCD). The backlight can comprise a back cover including a bottom plate and side covers, a light guide plate disposed on the bottom plate, and cold cathode fluorescence lamps (CCFLs) located on the sides of the light guide plate and enclosed by the side covers. The CCFLs can be disposed on four sides of the light guide plate. The CCFLs can be two lamps in L shape or four lamps in a straight line shape disposed on the sides of the light plate, with high voltage ends of one CCFL adjacent to the low voltage ends of another CCFL, thus allowing the LCD lighter, slimmer and more compact in structure.

A keystroke module for use with a light guiding plate includes a contacting and controlling layer, a light guiding plate and a light source. The contacting and controlling layer has a pressing side and a contacting and light guiding side. The light guiding plate is arranged under the contacting and light guiding side of the contacting and controlling layer and further includes a light auxiliary layer and a light inducting layer, which is a soft piece body having a reflecting side, on which plural light guiding parts are arranged, while the auxiliary light layer is a hard transparent piece body that is laminated correspondingly above the reflecting side of the light inducting layer. In addition, the light source is arranged at one side of the light guiding plate for irradiating light from the light auxiliary layer, then the light being reflected out by the reflecting side and the light guiding parts of the light inducting layer; thereby, it is possible to prevent the components contacted with the light inducting layer of the light guiding plate from easy wearing and permanent deforming, and the using lifetime of the light guiding plate or the keystroke module may be prolonged significantly.

Disclosed herein are glass light guides comprising a first surface, an opposing second surface, and at least one edge, wherein the first surface is patterned with a plurality of color converting elements, and wherein the second surface is optionally patterned with a plurality of light extraction features and/or color converting elements. Also disclosed herein are display devices comprising such glass light guides. The display devices may further comprise a thin-film transistor (TFT) having a coefficient of thermal expansion (CTE) substantially similar to the CTE of the glass light guide.

A backlight module comprises a light bar, a light guide plate and at least one positioning member. The positioning member comprises a positioning part and a buffer part connected with the positioning part. The positioning part is arranged between the light bar and the light guide plate and is pressed against the light bar and the light guide plate. The buffer part is arranged on the side, which is opposite to the light guide plate, of the light bar.

The invention discloses a flickering key structure which comprises a base, a keycap, a restoring force mechanism and a light source device, wherein the keycap comprises a cap body and a light guiding column; the restoring force mechanism is connected between the base and the light source device; the keycap can be vertically moved relative to the base under the driving of the restoring force mechanism; the light source device is arranged between the light guiding column and the base and is faced to the emitting light of the light guiding column. The light enters from one end of the light guiding column, and then is emitted to the cap body from the other end and the side surface surrounding the end of the light guiding column, so that the cap body is capable of wholly receiving the relative uniform backlight.

The invention provides a light guide plate making method, and the method comprises the following steps: S10A, forming a reflection layer through injection molding; S20A, taking the reflection layer asa base material to form a light guide layer comprising the reflection layer and the light guide layer through secondary injection molding; or, S10B, forming the light guide layer through injection molding; S20B, taking the light guide layer as the base material to form a light guide plate comprising the reflection layer and the light guide layer through secondary injection molding; wherein one side of the reflection layer comprises a first optical part, one side of the light guide layer comprises a second optical part, and the first optical part and the second optical part are in concave-convex cooperation to form a lattice point. A light guide plate is provided, the light guide plate comprises the reflection layer and the light guide layer which are arranged in stacked form, one side ofthe reflection layer comprises the first optical part, one side of the light guide layer comprises the second optical part, and the first optical part and the second optical part are in concave-convexcooperation. A side-entering backlight module is provided, and the side-entering backlight module comprises the light guide plate. The light guide plate making method provided by the invention makesthe light guide plate simultaneously having reflection, light guiding and dodging functions, and improves making efficiency of the light guide plate.

The invention discloses a light guide pipe illumination device used for agriculture cultivation. The light guide pipe illumination device comprises a lighting device, a photovoltaic panel, a seal ring, a storage battery and a cultivation room. A controller is arranged on the cultivation room. Keys are arranged on the controller. A display screen is arranged above the keys. A diffuser is arranged in the cultivation room. An LED lamp is arranged above the diffuser. A regulator is arranged above the LED lamp. An extension tube is arranged above the regulator. A bent light guide pipe is arranged above the extension tube. The storage battery is arranged above the bent light guide pipe. The light guide pipe illumination device has the beneficial effects that the LED lamp is arranged so that light supplementation can be achieved and illumination can be brighter; the photovoltaic panel is arranged so that electricity can be stored in the daytime through solar energy; and a wind power generation device is arranged, and therefore electricity can also be generated through wind energy, the electric energy production can be larger, and electricity consumption at night can be ensured.