1287 results about "Collimated light" patented technology

The invention discloses an optical chip-optical fiber coupler based on a collimating grating penetrating through a substrate, which belongs to the technical field of photoelectric chips and comprises a substrate, an inverted optical chip is arranged on the substrate, and the optical chip comprises at least one optical device, an optical waveguide array for realizing input and output and a collimating grating array. The collimating grating array is provided with a gradually changing period and duty ratio, so that light output from the optical waveguide array is diffracted to the substrate through the collimating grating array and is propagated to the back surface of the optical chip as basically collimated light; an optical coupling element array is arranged at the position, corresponding to emergent light of the collimating grating array, of the back face of the optical chip to couple light to an optical fiber array. By the adoption of the structure, high-efficiency coupling of the optical chip and the optical fiber array is achieved, and compared with a common grating coupler and an edge coupler, the coupler has higher coupling efficiency and alignment tolerance, is easier to manufacture and can be widely applied to the fields of optical IO, photoelectric sealing (CPO) and the like of large-scale photoelectric integrated chips.

A kaleidoscopic laser beam projector (KLBP) system that employs a single moving structure to project patterns of sweeping laser beams with diverse sweep directions and emission apertures. The system comprises a collimated light source, a spinning mirror deflector (“spindle / flutter mirror”) at the center, and a stationary kaleidoscopic mirror containing multiple facet mirrors arranged in a concave fashion around the spindle mirror. As the spindle mirror rotates, it directs laser beams in a radially whirling movement toward the facet mirrors, which then subdivide these beams into multiple short strokes and redirect them outward in different directions. Various embodiments include configurations with diffractive optical elements (DOEs) for beam splitting, different kaleidoscopic mirror geometries (hexagonal, octagonal, etc.), and innovative flutter mirror mechanisms that create controlled angular variations during rotation. The system enables a “4×1” configuration that replaces traditional “4×4” systems requiring eight motors and multiple moving structures. The KLBP system offers significant advantages including mechanical simplicity, reduced size and weight, improved energy efficiency, enhanced reliability, cost-effectiveness, and modular configurability. The diverse beam incidence angles enable superior illumination of complex three-dimensional objects for applications in machine vision systems, precision metrology, gap and flushness inspection, and robot-assisted assembly of complex structures.

The embodiment of the invention discloses an 8K ultra-high-definition optical endoscope and an imaging system, relates to the technical field of medical instruments, and aims to provide an optical endoscope with higher resolution. The optical endoscope comprises a tube body, an objective lens group and a relay lens group, the objective lens group and the relay lens group are arranged in the tube body, the relay lens group is arranged at the image space of the objective lens group, and a collimation magnifying lens group is arranged at the image space of the relay lens group; wherein the objective lens group is used for imaging an observed object; the relay lens group performs relay transmission on the image formed by the objective lens group; the collimation magnifying lens group amplifies the light spot of the image space of the relay lens group into a parallel collimation light spot, so that the light emergent angle of the relay lens group is consistent with the light incident angle of the pick-up lens, and the size of the parallel collimation light spot formed after amplification is consistent with the size of the entrance pupil of the pick-up lens; and the light emitting side of the relay lens group is the image side of the relay lens group. The embodiment of the invention is suitable for the scene of medical examination and operation through the endoscope.

A lens element intended to be worn in front of an eye of a wearer, the lens element being adapted to provide a prescribed dioptric correction function in a prescription plane, the lens element including an arrangement of microoptical elements. When receiving a collimated beam of monochromatic light, the lens element is configured to produce a primary luminous intensity maximum in a prescription plane, and the arrangement of microoptical elements is configured to produce at least one first secondary luminous intensity maximum at a first proximity difference from the prescription plane and at least one second secondary luminous intensity maximum at a second proximity difference from the prescription plane, the first proximity difference and the second proximity difference having opposite signs.

The utility model discloses a semiconductor laser. The semiconductor laser comprises a tube shell which comprises a base and a wall seat, the base is provided with a mounting surface, and the wall seat is arranged on the mounting surface of the base and is provided with a plurality of parallel step surfaces perpendicular to the mounting surface; the plurality of collimation light path groups are arranged on the mounting surface, correspond to the step surfaces in sequence and are used for emitting a plurality of collimation light beams along a first direction parallel to the mounting surface; and the multi-path reflecting mirror group is sequentially arranged on each step surface and is used for reflecting the multi-path collimated light beams to a plane higher than the mounting surface and transmitting the multi-path collimated light beams along a second direction parallel to the mounting surface, and the second direction is different from the first direction. Through the mode, the semiconductor laser provided by the utility model can uniformly dissipate heat of the laser chip in the semiconductor laser, the cooling water channel of the base is easy to process, the light path shaping and adjusting difficulty is small, and the size of the semiconductor laser can be effectively reduced.

The invention discloses a light field display system based on collimated light and multiple light control, and relates to the field of three-dimensional display. The system is provided with a diaphragm array layer which can limit the light emitting angle of a light source layer; the square lens array layer is arranged, light emitted by the light source layer can be converted into collimated light, and the directivity of the light is guaranteed; the orthogonal prism sheet layer is arranged, so that light rays are homogenized in two dimensions, and brightness balance of all parts of a final display area is ensured; pixel light rays are projected to different positions in a space through the light control grating layer, so that left and right eyes can see different image information respectively to form stereoscopic vision; the unidirectional diffusion layer is arranged above the light control grating layer, light rays are diffused in a unidirectional manner, and the same three-dimensional effect is generated at different positions in the vertical direction; and reverse compensation is carried out through a diffusion error compensation algorithm, so that observers at different positions can obtain consistent visual experience, and finally, a three-dimensional light field display effect with uniform brightness and low crosstalk is presented.

The utility model provides a multi-axis shape and position error synchronous measuring device. The multi-axis shape and position error synchronous measuring device comprises a laser module, a light splitting steering system, a two-dimensional position detector A arranged on a sliding block of a first linear guide rail, a two-dimensional position detector B arranged on a sliding block of a second linear guide rail, and a two-dimensional position detector C arranged on a sliding block of a third linear guide rail, initial laser output by the laser module is divided into a first Y-axis collimated light beam, a second Y-axis collimated light beam and a third X-axis collimated light beam through the light splitting steering system, and the first Y-axis collimated light beam, the second Y-axis collimated light beam and the third X-axis collimated light beam enter the two-dimensional position detector A, the two-dimensional position detector B and the two-dimensional position detector C respectively. According to the utility model, multiple form and position errors such as parallelism and verticality between the guide rails can be measured at the same time through one-time measurement, one-by-one measurement is not needed, and the measurement efficiency is greatly improved.

The double-light module comprises a lens and a plurality of unit optical systems, the unit optical systems are sequentially arranged in the transverse direction, each unit optical system comprises a primary optical element and a light source, the lens is provided with a plurality of lens units connected in sequence, and the unit optical systems correspond to the lens units one to one; at least one unit optical system is a high and low beam combination unit system, the high and low beam combination unit system comprises at least one low beam light source, a low beam primary optical element, a high beam light source and a high beam primary optical element, and the high and low beam combination unit system corresponds to a high and low beam combination lens unit; the low-beam primary optical element is configured to collimate light emitted by the low-beam light source to the high-beam and low-beam combined lens unit and perform projection imaging, and the high-beam primary optical element is configured to collimate light emitted by the high-beam light source to the high-beam and low-beam combined lens unit and perform projection imaging. The system thermal risk can be improved, the light pattern broadening is effectively increased, and the cost is low.

The present invention relates to a radiation generating system (1) comprising a radiation unit (2), wherein the radiation unit (2) comprises a light source (3), a first collimator (4), and an optical arrangement (5). The light source (3) is configured to generate light source radiation (100) having a first spectral power distribution having an intensity I1,1 at a first wavelength λ1 and an intensity I1,2 at a second wavelength λ2. The first collimator (4) is configured in a light receiving relationship with the light source (3), wherein the first collimator (4) is configured to collimate the light source radiation (100) into collimated light source radiation (101) having an initial spatial light distribution (ISLD). The optical arrangement (5) is arranged downstream of the first collimator (4) and comprises an optical filter (6) and a diffuser (7). The optical filter (6) has a higher transmission for the first wavelength λ1 than for the second wavelength Xi when irradiated under a predefined angle 0. The first wavelength Xi is selected from the range of 190-230 nm and the second wavelength Xi is selected from the range of 100-190 nm and / or 230-300 nm. The optical filter (6) is configured to filter at least part of the collimated light source radiation (101) into filtered radiation (102) comprising at least portion of the light source radiation (100) of the first wavelength Xi having a first spatial light distribution (SLD1) and at least portion of the light source radiation (100) of the second wavelength λ2 having a second spatial light distribution (SLD2) different from the first spatial light distribution (SLD1). The diffuser (7) is configured downstream of the optical filter (6). The diffuser (7) is configured to diffuse at least part of the filtered radiation (102) into diffused radiation (103) comprising at least a portion of the light source radiation (100) of the first wavelength λ1 having a third spatial light distribution (SLD3) and at least portion of the light source radiation (100) of the second wavelength λ2 having a fourth spatial light distribution (SLD4) different from the second spatial light distribution (SLD2).

The invention discloses a lens mounting flange distance and decentration integrated measurement light path and a measurement method, belongs to the technical field of optical measurement, and aims to solve the problems in the prior art. According to the invention, monochromatic light emitted by a light source passes through a dodging sheet and an emergent small hole sheet and then is collimated into parallel light by a collimation off-axis parabolic mirror, the parallel light is reflected to a rear beam splitter prism by a front beam splitter prism, and the parallel light passes through the rear beam splitter prism and is propagated to a convergent lens; the convergent focus of the convergent lens reaches a to-be-tested system and is collimated again through the convergent lens after being reflected by the to-be-tested system, the collimated light after being collimated is transmitted in two paths, one path of collimated light passes through the rear beam splitter prism and the front beam splitter prism and is transmitted to the energy convergence off-axis parabolic mirror, and the other path of collimated light passes through the energy convergence off-axis parabolic mirror; after being converged by the energy convergence off-axis parabolic mirror, the light enters an optical power detector through an incident small hole sheet; and the other path of collimated light is reflected to the imaging convergence off-axis parabolic mirror by the rear beam splitter prism, and is converged in the area array CCD camera for imaging through the imaging convergence off-axis parabolic mirror.

Technologies for beam expansion in monolithic glass substrates are disclosed. In an illustrative embodiment, lenses in a glass substrate may be formed using a laser, either by changing the index of refraction or as part of a two-step etching process. A seam may be prepared and etched, separating the glass substrate into two components, one of which will be part of an optical plug and one of which will be part of an optical receptacle. The optical plug has a cavity into which an optical fiber can be placed. In use, the lens in the glass substrate of the optical plug collimates light from the optical fiber into a beam. When the optical plug is mated with the optical receptacle, the beam is aligned to the lens and a waveguide in the optical receptacle. The large size of the beam relaxes the alignment tolerance for the optical plug and receptacle.

The invention discloses a two-dimensional holographic grating exposure device and an industrial production method. The two-dimensional holographic grating exposure device is composed of a light splitting collimation light path at the front end and an exposure module at the rear end. In a light splitting and collimating light path at the front end, light emitted by a laser (121) is modulated by a power modulator (111), passes through an electronic shutter (131) and then is split into a first sub-light beam (151), a second sub-light beam (152) and a third sub-light beam (153) by a light splitting unit (14), the three paths of light reach a first diaphragm, a second diaphragm and a third diaphragm after being subjected to turning, polarization modulation, beam expansion and collimation, and the spot size and shape of the light are limited through the diaphragms. The three beams of light passing through the diaphragm are introduced into the rear-end exposure module, the first path of light and the third path of light pass through the first coupling prism, the second coupling prism, the substrate material and the base material and then intersect with the second path of light passing through the substrate material and the base material at the holographic material, and the three beams of light interfere with each other to form a two-dimensional grating. The device can perform grating exposure in two dimensions at the same time, the two-dimensional grating exposure process is simplified, and the two-dimensional grating manufacturing efficiency is improved.

Various examples relate to collimated phase measuring deflectometry. In one example, is a collimated phase measuring deflectometer system with a screen that emits a structured light pattern; a collimation optical system comprising a Fourier lens positioned such that the structured light pattern passes through the collimation optical system; a beam splitter positioned such that the structured light pattern is redirected to illuminate a surface of a specimen under test (SUT); and a camera having a telecentric lens positioned such that a deflected pattern produced by illuminating the surface of the SUT is captured by the camera. The deflection pattern is insensitive to the distance from the collimated phase measuring deflectometer to the SUT surface. In another example, a method includes emitting a structured light pattern; collimating the emitted light pattern; reflecting collimated light to illuminate a SUT surface; and acquiring an image of a deflected pattern produced by the illumination.

The utility model discloses a light weight myriawatt laser welding head and a laser welding system capable of adjusting annular light spots, which comprise a zooming component, and the zooming component receives collimated light beams output by an upstream light path and focuses the collimated light beams to a workpiece to be processed. The zoom assembly comprises a rotation driving device and a first lens, the rotation driving device is used for driving the first lens to rotate around a rotating shaft of the rotation driving device, a main optical axis of the first lens does not coincide with the rotating shaft, and the distance between the main optical axis of the first lens and the rotating shaft is adjustable. A galvanometer module is not adopted in a light path of the welding head, no optical medium face needs to be arranged, laser spots with the controllable swing track can be output through a simple structure, the welding quality is greatly improved, and the welding head can adapt to various complex welding processes; and meanwhile, laser energy loss and return light can be reduced, and the device is particularly suitable for a high-power laser processing system.

An augmented-reality glasses comprises a plurality of panels of light emitters arranged to form an array of light emitters, wherein the array of light emitters includes light emitters of three colors; collimation optics for collimating light received from the array of light emitters; an optical coupler for receiving the collimated light; and a three-channel waveguide combiner for display of augmented-reality content to a wearer of the augmented-reality glasses, wherein each channel of the three-channel waveguide combiner respectively causes display of images of one color of the three colors generated by the light emitters. In some embodiments, the three-channel waveguide combiner is an optical waveguide with pupil replication and the optical coupler is an in-coupling optical element for coupling the collimated light into the three-channel waveguide combiner.

The utility model provides a metasurface type speckle projector and depth detection equipment, which can realize a speckle projection function based on a light source array by using a metasurface and avoid the problem of zero-order bright spots or stronger background light generally existing when a diffractive optical element is used. The metasurface type speckle projector comprises a light source array used for emitting a plurality of conical light beams arranged in an array; the light modulation element has positive focal power, is arranged on the light emitting side of the light source array and is used for collecting the conical light beams from the light source array; and the metasurface element is arranged on one side, far away from the light source array, of the light modulation element and is used for regulating and controlling the light beams gathered by the light modulation element so as to form a plurality of collimated light beams projected towards different directions.

The invention discloses a composite additive system based on programmable laser beam-double arcs and a working method of the composite additive system. The composite additive system is mainly composed of a laser unit, a beam shaping unit, a deformation optical unit, a double-arc unit, a double-wire-feeding unit, a substrate unit and a light spot shape unit. According to the system, Gaussian laser is converted into a flat-topped beam through a pi Shaper collimation beam shaper, and the shape and intensity distribution of a light spot are dynamically regulated and controlled by combining an electromagnetic actuating self-adaptive optical element; the double arc units cooperate around the laser beam to achieve gradient deposition of heterogeneous materials such as titanium / aluminum and the like in cooperation with an independently-controlled wire feeding system. A closed-loop feedback mechanism is adopted, molten pool parameters are monitored in real time through an optical sensor, laser power, electric arc parameters and wire feeding speed are dynamically adjusted, and molten pool stability and metallurgical reaction control precision are remarkably improved. The system can meet the multi-material composite additive manufacturing requirements of multifunctional parts of complex structures, and is particularly suitable for efficient forming of high-performance titanium-aluminum alloy components in the aerospace field.

Disclosed are a high-speed optical phase measurement system, a measurement method and an application thereof. The system includes an illumination module, a microscope module, an interference module, a camera module, a high-precision positioning stage and a control and data processing module. The illumination module, microscope module and interference module form an interferometer, with a preset angle between the reference mirror and the plane perpendicular to the optical axis; the high-precision positioning stage is configured to carry the sample and provide stable and accurate scanning; the emitted light from the collimated light source passes through the objective lenses and is incident on the sample and reference mirror respectively, the reflected light of the sample interferes with the reference light and is collected by the camera module; the control and data processing module implements on-line phase measurement based on the interference image.

The utility model discloses a receiving end assembly of a high-speed optical module, which belongs to the technical field of optical devices and comprises a Receptacle optical interface, an optical fiber, a capillary tube, a lens, a wavelength division multiplexer, an array lens, a prism and a substrate, the optical fiber is used for transmitting light, the capillary tube, the lens, the wavelength division multiplexer, the array lens and the prism are fixed on the substrate, the Receptacle optical interface is connected with the optical fiber, and the optical fiber is connected with the substrate. The lens is located between the capillary tube and the wavelength division multiplexer, the array lens is located between the wavelength division multiplexer and the prism, the capillary tube converges light rays and enables the light rays to enter the lens, the lens enables collimated light converged by the capillary tube to enter the wavelength division multiplexer, the wavelength division multiplexer demultiplexes wavelengths, four paths of parallel light are formed and enter the array lens, and the array lens is located between the prism and the array lens. The array lens gathers incident light, and the gathered light beam is emitted from the prism and then gathers to the focus position. According to the invention, four light beams of 0.75 Pitch are converted into four light beams of 0.25 Pitch by using the turning prism; according to the invention, four light beams with the interval of 0.25 mm can be realized at the receiving end of the optical module.

The invention discloses a glare database acquisition method, a glare database acquisition device, an image processing method, an image processing device, electronic equipment and a computer readable storage medium. The glare database acquisition method comprises the following steps: for the same light source, adopting a first camera module and a second camera module to shoot a first image and a second image under the same incident light angle so as to form an image pair, an anti-reflection film is additionally arranged on a first optical assembly of the first camera module; the incident angle of the illumination light of the collimation light source is changed for multiple times, and the first camera module and the second camera module shoot a plurality of first images and a plurality of second images to form a plurality of image pairs; obtaining a glare mask pattern according to the first image and the second image in each image pair; extracting feature data of glare in the glare mask pattern; and establishing a glare database according to the glare mask patterns of the plurality of image pairs and the corresponding glare feature data.

A transparent wearable data display having a source of collimated light, a deflector for deflecting the collimated light into a scanned beam, and a first of switchable grating elements sandwiched between first and second parallel transparent substrates, which together functioning as a first light guide. A first coupling is provided for directing the scanned beam into a first total internal reflection (TIR) light path of the first light guide along the first array column. The grating elements having diffracting and non-diffracting states, in their diffracting state deflecting light out of said light guide. The grating elements are switchable into their diffracting states one group of elements at a time.

The invention relates to the technical field of light paths, and particularly discloses a laser shaping system and a laser printer, the laser shaping system comprises an LD collimating lens, a rotating mirror, a focusing lens and a focusing surface which are arranged in sequence; the LD collimating lens is used for receiving a first fast-axis laser beam and a first slow-axis laser beam, converting the first fast-axis laser beam into a fast-axis collimated beam, and converting the first slow-axis laser beam into a slow-axis collimated beam; wherein the fast axis collimated light beam and the slow axis laser light beam are parallel light beams; the rotating mirror is used for performing deflection processing on the fast-axis collimated light beam to obtain a second fast-axis laser beam, and performing deflection processing on the slow-axis laser beam to obtain a second slow-axis laser beam; and the focusing lens is used for focusing the second fast axis laser beam and the second slow axis laser beam to the focusing surface. The invention can bear high-power laser, and is low in light path cost and easy to process.

The invention provides a near-to-eye display device and a preparation method thereof, the near-to-eye display device comprises a waveguide substrate, a coupling-in grating, a coupling-out grating and a metasurface lens, and the waveguide substrate comprises a light-in area and a light-out area; the coupling-in grating is located in the light incidence area of the waveguide substrate and used for enabling at least part of incident light to be coupled into the waveguide substrate along a first path. The coupling-out grating is located in the light emitting area of the waveguide substrate and is used for taking out the light coupled into the waveguide substrate and emitting the light along a second path; the metasurface lens is located in the light incident area of the waveguide substrate and used for adjusting at least part of incident light propagating along the first path from divergent light to collimated light. The overall size of the near-to-eye display device can be reduced, and the integration level of the near-to-eye display device is improved. And meanwhile, the attractiveness, portability and comfort of the near-to-eye display device can be improved.

The invention belongs to the field of optics, and particularly discloses a light spot shrinking device for an angle resolution scatterometer. Through the first lens, the beam shaping element and the second lens which are sequentially arranged along the light path, beam focusing, beam shaping and collimation are carried out in sequence, the collimated beam with the diameter smaller than that of the beam of the light source is formed, the collimated beam is combined with the subsequent light path, and the light spot shrinking function can be achieved at the detection end of the objective lens.

The invention relates to an optical fiber beam expanding contact piece and a hollow-core optical fiber connector, and belongs to the field of optical fiber connectors, the optical fiber beam expanding contact piece comprises a hollow-core optical fiber and a light transmission medium which is arranged in front of the hollow-core optical fiber and can output beam expanding collimated light, the light transmission medium is arranged in a connector pin, and the light transmission medium is a medium with a focusing function. The connector pin is mounted on the positioning piece, and the positioning piece is used for being matched and assembled with a connector shell of the hollow-core optical fiber connector; the hollow-core optical fiber connector comprises a connector shell and an optical fiber beam expanding contact piece arranged in the connector shell. Efficient optical signal transmission can be achieved, and the requirements of an optical fiber communication system for efficient and stable connection performance are met.

The utility model discloses a semiconductor laser. The semiconductor laser comprises a tube shell which comprises a base and a wall seat, the base is provided with a first mounting surface, and the wall seat is arranged on the first mounting surface of the base and is provided with a second mounting surface perpendicular to the first mounting surface; the plurality of collimation light path groups are arranged on the first mounting surface and are used for emitting a plurality of collimation light beams along a first direction parallel to the first mounting surface; the multi-path reflecting mirror group comprises a bottom reflecting mirror and a beam combining reflecting mirror which are arranged on the second mounting surface at intervals along a second direction, each reflecting mirror group is arranged corresponding to each collimation light path group, and the bottom reflecting mirror reflects the collimation light beams transmitted along the first direction to transmit the collimation light beams to the beam combining reflecting mirror along the second direction parallel to the second mounting surface; the reflecting surface of each beam combining reflecting mirror is arranged on the second mounting surface at a preset angle, so that the rear beam combining reflecting mirror is used for lifting the corresponding collimated light beam so as to cross the front beam combining reflecting mirror; and the rhombic prism is arranged on an emergent light path of the multi-path reflecting mirror group and is used for carrying out inclined compensation on each collimated light beam, so that each collimated light beam is emergent along a third direction parallel to the first mounting surface and the second mounting surface. Through the mode, the semiconductor laser provided by the utility model can uniformly dissipate heat of the laser chip in the semiconductor laser, the cooling water channel of the base is easy to process, the light path shaping and adjusting difficulty is small, and the size of the semiconductor laser can be effectively reduced.

The invention relates to a Mini-LED display submodule and a large-size naked-eye 3D display device. The Mini-LED display submodule comprises a display panel, a first grating layer and a second grating layer which are arranged in sequence. The display panel comprises a plurality of pixel units, the first grating layer comprises a plurality of first lenses, and the first lenses are used for converting emergent light rays emitted by the corresponding pixel units into collimated light rays; the focal points of the multiple first lenses are arranged in a coplanar mode, light rays passing through the first lenses can be converted into collimated light rays with unified parameters, the multiple pixel units and the multiple first lenses are arranged in a one-to-one correspondence mode, independent regulation and control of single emergent light rays can be achieved, and the problem of cross crosstalk of different emergent light rays is greatly solved in combination with collimation processing of the first lenses; by arranging the second grating layer, directional refraction can be carried out on the collimated light rays output by different first grating layers, the collimated light rays after refraction are respectively projected to different viewpoint positions in the space, and naked eye 3D display can be realized.

A medical system is described comprising a mirror comprising a handle and a shaft defining a channel having a distal opening, a processor, at least one laser source, a first laser fiber, and a second laser fiber, wherein each of the first laser fiber and the second laser fiber is coupled to at least one laser source and extends through the shaft, and wherein a distal end of the shaft comprises an imager, a distal opening of the channel, a distal end of the first laser fiber and a distal end of the second laser fiber, and wherein each of the first laser fiber and the second laser fiber is configured to transmit the collimated light beam onto the target without altering or splitting the target.

The embodiments of the present application provide an optical module, a display device, a display equipment and an electronic device, which are used to improve the problem that a display device provided with an anti-glare cover plate is difficult to meet the requirements of low flash point and high definition. The optical module is applied to a display device, the display device includes a display panel, and the optical module includes a uniform light layer and an anti-glare layer arranged in sequence in the light emitting direction of the display panel; the uniform light layer generates an output light intensity distribution when collimated light is vertically incident, and the light intensity attenuation within the set output angle range is less than or equal to a first threshold value, and the uniform light layer is used to uniformly mix the light emitted by the display panel, and the light after mixing by the uniform light layer can avoid the generation of flash points when it enters the anti-glare layer, so that there is no need to suppress the flash points by increasing the haze of the anti-glare layer, and the clarity of the display imaging can be guaranteed.

The invention relates to a low-cost 800G 2XFR4 silicon light engine which comprises four collimating lenses distributed side by side, the light incident side of each collimating lens is coupled with a laser chip, the light emergent sides of the four collimating lenses are jointly coupled with a prism used for reducing the distance between four paths of parallel collimated light, and the light emergent side of each collimating lens is coupled with a laser chip. The light emitting side of the prism is sequentially coupled with an array converging lens, a polarization-independent optical isolator and a silicon optical chip in the light propagation direction, or the light emitting side of the prism is sequentially coupled with a polarization-independent optical isolator, an array converging lens and a silicon optical chip in the light propagation direction. The polarization-independent optical isolator has the advantages that the number of the lenses is reduced, the number of coupling times can be reduced, coupling time consumption can be shortened, only one large polarization-independent optical isolator can be adopted, compared with four independent polarization-independent optical isolators adopted in the prior art, the size of the polarization-independent optical isolator can be integrally reduced, and the size of the polarization-independent optical isolator can be reduced. And the cost is reduced.