75results about How to "Change direction of propagation" patented technology

The application provides a display panel and a control method thereof and a display device. The display panel includes a control module, a display substrate and an adjustment device arranged on the light output side of the display substrate. The adjustment device includes a first electrode, a first insulating layer, an electrostrictive layer and a second electrode, which are stacked together. Thecontrol module is connected with the first electrode and the second electrode, and is used for controlling the voltages of the first electrode and the second electrode and adjusting the electric fieldgenerated between the first electrode and the second electrode so as to deform the electrostrictive layer under the action of the electric field and adjust the propagation direction of light incidenton the electrostrictive layer. The adjustment device is arranged on the light output side of the display substrate. The electrostrictive layer in the adjustment device is deformed to form a lens structure under the action of the electric field, so as to change the propagation direction of incident light and the size of visual angle of display. Thus, the display panel achieves an anti-peep (reducing the angle of view) or sharing (increasing the angle of view) effect.

The invention discloses a touch screen with infrared rays transmitted inside a screen body and a method for identifying touch points. In the touch screen, the infrared rays sent out by an infra-red emission unit ripe into the touch screen body, are totally reflected by an upper reflecting surface and a lower reflecting surface inside the touch screen body, and are transmitted into the infrared receiving unit. According to the invention, the infrared rays are transmitted inside the touch screen body by using the total reflection principle, and a touch body is enabled to be clung to the surface of the touch screen to generate touch response, so that the problem of touch floating height is solved; and since the infrared rays are transmitted inside the touch screen, the infra-red emission unit is not required to be placed on the surface of the touch screen. Therefore, an edge frame free touch screen is realized.

The invention discloses an organic light-emitting diode (OLED) packaging structure, a manufacturing method thereof and a luminescent device. The OLED packaging structure comprises a substrate, OLEDs, blocked layers and optical modulation layers. The OLEDs are formed on the substrate. The blocked layers and the optical modulation layers are alternately formed on the OLEDs. According to the technical scheme of the OLED packaging structure and the manufacturing method thereof, the blocked layers and the optical modulation layers are alternately formed on the OLEDs, and by the optical modulation layers, the scattering light-emitting capability of the OLEDs is enhanced, and the propagation direction of a part of light is changed, so that the observation angle dependence of the OLEDs caused by a micro-cavity effect is reduced.

The invention discloses a quantum-dot color filter, a manufacturing method thereof and a display device and relates to the technical field of display, aiming at solving the problem that an existing display device is low in light-emitting efficiency. The quantum-dot color filter comprises a substrate, black matrixes and a quantum dot layer, wherein the latticed black matrixes and the quantum dot layer are positioned on the substrate, the quantum dot layer is positioned in lattices enclosed by the black matrixes, and the black matrixes are capable of reflecting light emitted by quantum dots in the quantum dot layer after the quantum dots are excited. When the display device provided with the quantum-dot color filter operates, backlight emits into the quantum-dot color filter to excite the quantum dots in the quantum dot layer, the quantum dots emit light, part of the light emitted by the quantum dots is emitted towards the black matrixes, and the black matrixes reflect such light to change a light propagation direction to make the light emit from an emergent face of the display device, so that light-emitting efficiency of the display device is improved. The quantum-dot color filter is applied to the display device.

The present invention relates to a projection type holographic grating backlight structure. The projection type holographic grating backlight structure comprises a light source, an inclined reflection surface, a slab waveguide layer, a complex transmission holographic grating, a liquid crystal layer and a three primary color filter; the light source is positioned at the left lower end of the slab waveguide layer; the inclined reflection surface is positioned at the left side of the light source; the complex transmission holographic grating is positioned at an upper end of the slab waveguide layer; the liquid crystal layer is positioned at an upper end of the complex transmission holographic grating; and the three primary color filter is positioned at an upper end of the liquid crystal layer. According to the lighting structure, the light ray propagation direction of a point light source can be changed, the light is uniformly exported nearly without light energy loss, and luminance uniformity is well achieved. Red, green and blue three-color wave bands in the hybrid light are narrow, monochromaticity is good, so that the displayed color gamut can be expanded, and light efficiency can be improved.

The invention describes a display panel and a display device including the display panel. The display panel comprises a first sub display panel and a second sub display panel which are adjacent to each other, a splicing area, a first component, a second component, and an optical film layer. The splicing area comprises a part of a first display area, close to the second sub display panel, of the first sub display panel and a part of a second display area, close to the first sub display panel, of the second sub display panel, and each of the first display area and the second display area comprises a plurality of light-emitting elements. The first component and the second component are arranged on the edges of the two sides of the splicing area respectively. The optical film layer is located between the first component and the second component and at least covers the splicing area, and the face, away from the sub display panels, of the optical film layer is of a non-planar structure. The invention further provides a display device comprising the panel structure. According to the invention, the surface of the optical film layer covering the splicing area is arranged, so that the light emitted from the optical film layer can be emitted at different angles, light regulation and control are realized, and the problem that the light of a spliced screen is not uniform is solved.

The RFID system 10 has an interrogator 11, an interrogator antenna 12 connected to the interrogator 11 to transmit a signal, and a radio wave reflection sheet 21 that reflects a signal transmitted from the interrogator antenna 12 and includes a part of a parabolic curve or a curve similar thereto. , The wireless tag 13 that communicates with the interrogator 11 by receiving and responding to a signal from the interrogator antenna 12 at least through the radio wave reflecting sheet 21 . The signal passing through without being irradiated to the wireless tag 13 is reflected by the radio wave reflection sheet 21 toward the inside of the radio wave reflection sheet 21 . Therefore, signal dispersion can be prevented, and the signal from the interrogator antenna 12 can be effectively used.

The invention discloses a four-jamming-light-path infrared jamming simulation system using a microlens array as a beam expansion element, and belongs to the technical field of infrared semi-physical simulation. The four-jamming-light-path infrared jamming simulation system comprises jamming light paths, a compound objective lens (5), the microlens array (14) and a collimator objective lens (8) in the direction of the light paths, wherein parallel light beams emitted by the jamming light paths light on the microlens array (14) after penetrating through the compound objective lens (5), convergency of the light beams is carried out through the microlens array (14), collimation is carried out on the light beams through the collimator objective lens (8), and the light beams are received by a seeker. According to the four-jamming-light-path infrared jamming simulation system using the microlens array as the beam expansion element, when the microlens array serves as the beam expansion element, the jamming light beams lighting on the front surface of the microlens array are further converged, the direction of propagation of the light beams is changed, and the angle of divergence of the light beams is enlarged; meanwhile, the collimator objective lens can be filled with jamming light, collection efficiency of jamming light energy is greatly improved.

The invention relates to a plasma etching device comprising a technological cavity, a first electrode, a second electrode, and excitation radio frequency units. The first electrode and the second electrode are arranged in the technological cavity and are opposite to each other; and the first electrode includes at least two polar plates. The number of the excitation radio frequency units are identical with that of the polar plates and all the polar plates and all the excitation radio frequency units are in one-to-one electrical connection; and the excitation radio frequency units are used for providing excitation energy for etching gas in the technological cavity by all the polar plates of the first electrode. On the basis of the difference of output frequencies of all the excitation radio frequency units, phase differences between emission radio frequencies of all the excitation radio frequency units, or differences of frequencies and phases of the emission radio frequencies, a standing wave occurrence caused by coherence due to opposite transmission of electromagnetic waves in the technological cavity can be avoided by using the plasma etching device. Therefore, a standing wave effect in the technological cavity can be weakened or even eliminated; the plasma with the high-density uniformity can be obtained; and uniform etching on the large-size wafer can be realized.

The invention relates to a structured arrangement manometer coarsened sapphire substrate and a preparation method. The sapphire substrate is provided with composite patterns formed by combining micron order patterns and nanometer order patterns, the nanometer order patterns are distributed on the micron order patterns, and the nanometer order patterns are distributed on the radiuses or the connecting lines of the gravity centers and the corners of the upper surfaces of the micron order patterns. The central points of the lower surfaces of the nanometer order patterns coincide with the central points of the radiuses or the centers of the connecting lines of the gravity centers and the corners of the upper surfaces of the micron order patterns. The nanometer order patterns on each micron order pattern are distributed symmetrically. The method comprises the steps that firstly, the micron order patterns are prepared on the sapphire substrate, and then the nanometer order patterns are prepared on the micron order patterns. By means of the structured arrangement manometer coarsened sapphire substrate and the preparation method, the propagation direction of light can be effectively changed, the probability of light overflow is increased, a light path can be effectively emitted out, the reflection of the patterns to light is enhanced, so that the propagation direction of the light is changed, and the light extraction efficiency and the light output power of a GaN-based LED with the sapphire substrate are improved.

The invention discloses a stress and strain detection device based on illumination intensity measurement, and belongs to the field of stress and strain detection. The stress and strain detection device comprises a first corresponding face, a second corresponding face, multiple photosensitive sensors and multiple light sources, wherein the photosensitive sensors and the light sources are arranged on the first corresponding face and / or the second corresponding face, an optical path gap is reserved between the first corresponding face and the second corresponding face, and the first corresponding face and the second corresponding face are placed oppositely. The photosensitive sensors are used for sensing illumination intensity of light coming from the light source and reaching the photosensitive sensors after being propagated in different directions. The stress and strain detection device has the advantages of being low in cost, light in weight, simple in machining process, high in reliability, wide in application range and capable of efficiently meeting the requirement of large-area stress and strain measurement.

The invention provides a lighting module of barcode recognition equipment. The lighting module comprises a lighting source, a condensing lens, a camera shooting module, a fixed support and a bottom plate; the fixed support is used for fixing the lighting source, the condensing lens and the camera shooting module on the bottom plate; the condensing lens comprises two structural assembly blocks and an effective mirror plane, the two structural assembly blocks are arranged side by side at a certain interval, and the effective mirror plane is erected at the tops of the two structural assembly blocks, so that the structural assembly blocks and the effective mirror plane form a containing space; and the lighting source is arranged in the containing space, and light rays of the lighting source penetrate through the condensing lens to supplement light for the image recognition zone of the camera shooting module. The condensing lens, the lighting source and the camera shooting module are combined to form a whole body by the fixed support, so that the lighting source, the condensing lens and the camera shooting module can be firmly fixed, thus being uneasy to cause dislocation and displacement, being convenient to install and fix, saving installing and operating time, and greatly improving working efficiency.

The invention provides a nanometer / micrometer composite graphical sapphire substrate and a preparation method thereof. The sapphire substrate has a composite pattern which is obtained through compositing a nanometer-scale pattern and a micrometer-scale pattern. The preparation method comprises the steps of preparing the micrometer-scale pattern on the sapphire substrate; depositing a nickel film on the micrometer-scale pattern; aggregating the nickel film for obtaining a large number of nickel nanometer particles; transferring the pattern of the nickel nanometer particles to the sapphire substrate according to dry-method etching through using the nickel nanometer particles as a mask, and forming a nanometer pattern on the micrometer-scale pattern of the sapphire substrate; eliminating nickel nanometer particle corrosion; and cleaning the substrate for finally obtaining the sapphire substrate with the nanometer / micrometer composite pattern. The nanometer / micrometer composite graphical sapphire substrate and the preparation method thereof have advantages of performing nanometer coarsening on the micrometer-scale pattern, improving epitaxial lateral growth, further improving crystal quality of the epitaxial film, more effectively changing light propagation direction, increasing light outlet probability, and improving internal quantum efficiency and light extraction efficiency of GaN-base LED of the sapphire substrate.

The invention discloses an optical module. The optical module comprises a circuit board and a lens assembly, wherein an optical transmitter and an optical detector are integrated with the circuit board; the lens assembly is covered above the optical transmitter and the optical detector; a first plane of reflection, a second plane of reflection and a third plane of reflection are formed in the lensassembly; a light beam irradiated on the first plane of reflection is propagated in a first direction after reflection; after a light beam irradiated on second plane of reflection is reflected, the light beam is irradiated on the third plane of reflection in a second direction, is propagated in a third direction after being reflected on the third plane of reflection, and then is incident in the optical detector; and the included angle between the first direction and second direction is 80-100DEG. The optical module reduces the process of manufacturing and increases the stability of product.

The invention provides an optical module. The optical module comprises a circuit board, an arrayed waveguide grating AWG and an optical detector array which is arranged on the surface of the circuit board. Glue is coated on the surface of the optical detector array. The end of the AWG is an inclined surface. The glue is in contact with the AWG. The absolute value of the difference between the refractive index of the glue and the refractive index of the AWG is less than 10%. The light is reflected on the inclined surface of the AWG and incident to the surface of the optical detector array through the glue. According to the technical scheme, the glue is coated on the surface of the optical detector array, and the coupling efficiency can be improved and the coupling time can be shortened by using the simple optical path system, and the position accuracy requirement for each device in the optical path system can be reduced.

The invention discloses a collimating backlight structure, a light source array, a light collimating component and a light guide plate. The light source array includes several LED light sources. The light collimating component includes a light pipe array, and the light pipe array is composed of several light pipes, and the light pipes are used for collimating the light emitted by the LED light source. The light guide plate is a flat plate or a wedge-shaped plate structure, and receives the light emitted from the light collimating member. One surface of the light guide plate contains several microstructure units, and several microstructure units have the same structure. The microstructure includes at least two surfaces, one of which is The surface changes the propagation direction of the light in the light guide plate, so that the light is deflected at a certain angle and then exits the light guide plate. The light guide plate does not change the divergence angle of the light emitted by the light collimating component, but only changes the propagation direction of the light emitted by the light collimating component.

The invention provides a vibration reduction method and system for low frequency elastic waves, and a vibration reduction device. According to the technical scheme of the invention, the vibration reduction device is manufactured according to the characteristics of the elastic waves and the vibration reduction requirements, and the shape, size and material parameters of the vibration reduction device are designed, so that when the vibration reduction device is used as a transmission space for the elastic waves, the transformation of an elastic wave control equation approximately meets the invariance requirement, so that during vibration reduction, after the elastic waves enter the vibration reduction device from the end face, located on a path that the elastic waves are transmitted to a component to be isolated from vibration, of the vibration reduction device, the transmission direction of the elastic waves bends, and the elastic waves can be transmitted to the other end face of the vibration reduction device along the interior of the vibration reduction device, so that the transmission direction of the elastic waves is changed, and the elastic waves transmitted to the component tobe isolated from vibration are reduced so that the vibration reduction is achieved. According to the technical scheme, the vibration reduction device has an obvious vibration reduction effect on thelow frequency elastic waves within the frequency band range of 332-1800 Hz.

The embodiment of the invention relates to a rotation sound box, which comprises a base, a bass box body, a bass horn, an inverted tube, a frequency divider, a mid-high-pitch sound box, a high-pitch horn and a mid-pitch horn, wherein the bass box body is arranged above the base; the upper surface of the bass box body is provided with a first mounting groove, and a bearing is embedded in the first mounting groove; the upper surface of the bass box body is provided with multiple ball fixing grooves; balls are arranged in the ball fixing grooves; the mid-high-pitch sound box is arranged above the bass box body; the lower surface of the mid-high-pitch sound box is provided with a second mounting groove; the other end of the bearing is embedded in the second mounting groove; the lower surface of the mid-high-pitch sound box is provided with a sliding rail; angular displacement is generated between the bass box body and the mid-high-pitch sound box through the bearing; and friction is generated between the balls and the sliding rail, dam movement is generated. A vertical separate structure is adopted, the upper mid-high-pitch sound box can rotate horizontally, good sound effects are realized, and requirements of a user are met.

The invention provides an optical module and belongs to the field of optical communication. The optical module comprises a circuit board, a light emitter / receiver and a lens assembly. The light emitter / receiver is arranged on the surface of the circuit board. The lens assembly covers the light emitter / receiver and changes transmission direction of light. The edge of the lens assembly is provided with a first metal layer. The surface of the circuit board is provided with a second metal layer. The first metal layer is connected with the second metal layer in a welded manner, so the lens assembly is fixed on the circuit board. After light passes the lens assembly, the transmission direction is changed. In addition, by wielding the first metal layer and the second metal layer, offset between actual installation position and preset installation position is reduced.

The invention provides an optical fiber radiation source with adjustable radiation energy and wavelength. The optical fiber radiation source comprises a light emitting source, a monochromator, an input collimator, an attenuation slice, an output collimator, a stepper motor, a stepper motor screw and an optical fiber. The light emitting source is directed at an incidence slit of the monochromator. The input collimator is arranged in an emergence slit of the monochromator. The attenuation slice is located between the input collimator and the output collimator. The stepper motor is connected with the attenuation slice through the stepper motor screw, so as to control the movement of the attenuation slice. The input port of the optical fiber and the emergence port of the output collimator are connected. According to the scheme, by adjusting the monochromator and the attenuation ratio of the attenuation slice, the radiation source with adjustable radiation energy and wavelength is realized; the optical fiber is used to output a beam, thus the propagation direction of the beam can be conveniently changed; and the requirements of adjustable radiation energy and wavelength of the radiation source and flexible change of the beam direction are satisfied when calibration is carried out on a spectrometer, a photoelectric detector and the like.

The invention belongs to the technical field of solar cells and provides an organic solar cell having a cascaded metal grating structure. The organic solar cell comprises a conductive film layer, a hole transport lay, a uniform absorbing layer, a grating layer and a back cathode, which are arranged from top to bottom; the grating layer is a one-dimensional periodic structure formed by arranging aplurality of cascaded gratings with the same structure transversely; each of the cascaded gratings includes a first grating, a second grating, a third grating, and a fourth grating which have the equal period and are arranged in sequence, wherein the grating ridge widths W1, W2, W3, and W4 of the first grating, the second grating, the third grating, and the fourth grating are sequentially increased, and the grating ridge heights of the first grating, the second grating, the third grating, and the fourth grating are equal. The invention improves the absorption efficiency of the solar cell and realizes broad spectrum absorption.

The invention discloses a sounding screen and a display device.The sounding screen comprises a screen body and an exciter arranged on one side of the screen body, and a sound wave refraction layer anda sound wave reflection layer are sequentially arranged on the surface of the side, away from the exciter, of the screen body in a stacked mode; the sound wave refraction layer comprises a pluralityof protruding blocks with arc outer surfaces, the protruding blocks are used for refracting sound waves generated by vibration to the sound wave reflection layer in the same direction, and the included angle between the reflection face of the sound wave reflection layer and the screen body is an acute angle. The sound wave refraction layer and the sound wave reflection layer are arranged above thescreen, sound waves generated by screen vibration are refracted to the sound wave reflection layer in the same direction through the sound wave refraction layer, then the sound waves are reflected toa specific position through the sound wave reflection layer, the propagation direction of the sound waves can be changed, and the screen makes a sound at the specific position; therefore, directionalsounding is realized, and the privacy of listening to voice or conversation by a user is greatly improved.

The embodiment of the invention discloses an optical anti-shake device, which can maintain the stability of a camera and improve the photographing effect, can be applied to mobile phones, tablet personal computers and other terminal devices, and can also be applied to projection, 3D distance sensors and other devices. The optical anti-shake device comprises a first lens, a first reflecting mirror,a position sensor, a control part and a shell used for wrapping the first lens and the first reflecting mirror; the position sensor is connected with the control part; an optical signal is transmitted to the first reflecting mirror after passing through the first lens; the first reflecting mirror reflects the received optical signal, and the reflected optical signal is projected on the imaging surface; the position sensor is used for detecting jitter information of the first lens and sending the jitter information to the control part; the control part is used for controlling the first reflecting mirror to rotate with a first preset direction as the axis according to the jitter information, and the first preset direction is not parallel to the normal direction of the first reflector.

The invention discloses an EPR thermal shrinkage cable terminal internal defect detection system and a detection method thereof, belongs to the technical field of high voltage and insulation, and aimsto solve the problems of poor generalization performance, poor penetrability, great environmental temperature influence, damage to a detected object and the like. The system comprises a femtosecond laser, a spectroscope, a detection light path system, an excitation light path system, a lock-in amplifier and an acquisition terminal, wherein the femtosecond laser and the spectroscope are arranged from left to right along a terahertz pulse path, the detection light path system and the excitation light path system are arranged behind the spectroscope in parallel, and the lock-in amplifier and theacquisition terminal are connected with each other. The method comprises the steps of: sample preparation and installation, defect detection, data collection and processing and result application. The combination of the system and the method is the widening of the application of the terahertz nondestructive visual detection technology to an EPR thermal shrinkage cable terminal; the unique structure and the method are combined, the terahertz time-domain spectral characteristics of the internal defects of the EPR thermal shrinkage cable terminal can be clearly established; and finally, the reverse application is carried out, so that the nondestructive visual detection of the internal defects of a composite cable is realized.

The invention relates to an intelligent solar street lamp of an anti-hot spot effect with a light supplementing function. The intelligent solar street lamp comprises a base, a lamp pole, a side rod, alamp shell, a lamp tube and a power generation mechanism, wherein the power generation mechanism comprises a bottom plate, an adjusting assembly, a flat plate, solar panels and four light supplementing mechanisms, wherein each light supplementing mechanism comprises a telescopic assembly, movable plates, a translation assembly, supporting columns and light supplementing boxes; and each light supplementing box comprises a light inlet pipe and a light outlet pipe, and light guide assemblies are arranged inside the light outlet tubes. The intelligent solar street lamp of the anti-hot spot effectwith the light supplementing function is used for supplementing light to the shadow of the solar panels through the light supplementing mechanisms, so that the hot spot effect is prevented, and the power generation efficiency of the solar panels is improved; in the light supplementing mechanisms, and the light supplementing boxes are driven by the telescopic assemblies to be far away from the solar panels, the translation assemblies drive the light supplementing boxes to horizontally move, so that the light supplementing boxes can move to a sunlight irradiation position, and sunlight is reflected by the light guide assemblies and then is irradiated to the shadow of the solar panels after being reflected by a mirror surface, so that the hot spot effect is prevented, and the practicabilityof equipment is improved.

The invention discloses a powder-actuated tool with internal carbon ash removal and silencing functions. The powder-actuated tool comprises a dustproof cover, a movable sleeve and a sliding rail. A shell is arranged in the middle of the dustproof cover, and exhaust holes are embedded in the middle of the shell. Silencing cotton is arranged in the shell, and buffering holes are formed between the silencing cotton. A nail tube is arranged between the buffering holes, and silencing holes are distributed around the nail tube. A needle sleeve is arranged in the nail tube, and a firing pin is arranged in the needle sleeve. A return spring is arranged in the movable sleeve, and the movable sleeve is positioned on the right side of the firing pin. A fixing rod is mounted in the sliding rail. The sliding rail is positioned on the right side of the movable sleeve. An elastic pin is arranged in the fixing rod. According to the powder-actuated tool, the movable sleeve and the sliding rail are arranged, and the movable sleeve is wrapped with the sliding rail; and when the powder-actuated tool works, the movable sleeve moves in the horizontal center line direction of the sliding rail and assiststhe return spring in moving in the horizontal center line direction of the movable sleeve, and the return spring is prevented from shifting.

The invention provides a brush carrier of an automobile generator adjuster and belongs to the technical field of machinery. The problem of poor heat dissipation performance of an existing brush carrier is solved. The brush carrier comprises a brush carrier body, mounting holes used for mounting a carbon brush are formed in the brush carrier body, and the two mounting holes are parallelly formed; the two mounting holes are separated through partition walls between the two mounting holes, a long-strip-shaped groove is formed in the partition wall, and the groove is composed of a bottom wall, twofirst side walls which are oppositely arranged, and two second side walls which are oppositely arranged, wherein the distribution directions of the two first side walls are perpendicular to those ofthe two second mounting holes; a U-shaped heat dissipation rack is vertically and fixedly arranged in the groove, plate-shaped connection parts are arranged at two ends of the heat dissipation rack, and strip-shaped heat dissipation parts are arranged on two back opposite sides of the two connection parts; the heat dissipation parts abut against the second side walls, a cuboid-shaped heat preservation plate is further vertically arranged in the groove, the heat preservation plate is clamped between the two connection parts, and two side surfaces of the heat preservation plate are attached to the two first side walls respectively. The brush carrier has the advantage of good heat dissipation effect.

The invention provides a brightening and noise-reducing composite ceramic tile, comprising a substrate, a reflective material layer disposed on the upper surface of the substrate, and a protective layer disposed on the upper surface of the reflective material layer; the upper surface of the substrate has a concave-convex texture structure; the substrate is a ceramic substrate or a soft ceramic substrate; the composite ceramic tile is provided with tapered through holes extending through a thickness direction; and the large aperture end of each tapered through hole is located at the upper surface of the composite ceramic tile. The brightening and noise-reducing composite ceramic tile utilizes the concave-convex texture structure of the surface of the composite ceramic tile to change the vibration frequency of the sound source, reduce the sound rebound and change the direction of sound propagation, and uses the tapered through holes to induce the sound to the back of the composite ceramic tile, thereby achieving the effect of sound absorption and noise reduction; in addition, the concave-convex texture structure of the surface of the composite ceramic tile provided by the invention can reflect the light source from multiple angles, thereby effectively improving the brightness of the light, reducing the use of the lighting fixture and reducing energy consumption.

The invention discloses a novel distance sensing device and method. The novel distance sensing device comprises a distance sensor, and further comprises a first photoconductive element and / or a secondphotoconductive element. The first photoconductive element is used for guiding the distance measuring laser emitted by the distance sensor to a tested object, the light input end faces the emitting end of the distance sensor, and the light emitting end faces the tested object; the second photoconductive element is used for directing the ranging laser reflected back by the object toward the distance sensor, the light entering end facing the object, and the light emitting end facing the sensing end of the distance sensor. The novel distance sensing device can flexibly design the installation position of the distance sensor in the terminal equipment.