2436results about "Diffusing elements" patented technology

Provided is a light source device, including a first laser light source group, a second laser light source group, a dichroic mirror, a fluorescence converter, and an emission component. The first laser light source group emits laser light of a first waveband, and the second laser light source group emits laser light of a second waveband and laser light of a third waveband. The dichroic mirror is disposed on light-output sides of the first laser light source group and the second laser light source group, and the fluorescence converter and the emission component are respectively disposed on light-output sides of the dichroic mirror. The dichroic mirror is configured to emit laser light of various wavebands, and the fluorescence converter generates target fluorescence under the excitation of the laser light of the first waveband, and the target fluorescence is reflected by the dichroic mirror to the emission component.

The invention discloses a composite optical film with a polarization function, a preparation method and application thereof. The composite optical film comprises a transparent substrate layer, and a buffer layer, an oriented calcite crystal layer and an anti-reflection layer which are laminated on one side of the transparent substrate layer. Wherein the oriented calcite crystal layer is obtained by coating a superparamagnetic modified calcite crystal composite material suspension on the surface of the buffer layer, inducing optical axis oriented arrangement through a magnetic field and performing UV curing; the buffer layer is obtained by co-extruding a cycloolefin polymer and a polyurethane acrylate mixture, and a thermal expansion coefficient transition system is formed; the anti-reflection layer is composed of nano-porous titanium dioxide with the refractive index changing from 1.8 to 2.3 in a gradient mode, and a refractive index gradient structure is formed. According to the composite optical film, the polarization efficiency and the light transmittance of the composite optical film are improved and the industrial stability is improved through the design of the polarization functional layer in which the calcite nanocrystals are directionally arranged under the induction of a magnetic field and in combination with the gradient refractive index scattering layer.

The embodiment of the invention provides an anti-dazzle low-reflection optical film and a preparation method and application thereof, and relates to the field of optical films. The anti-dazzle low-reflection optical film comprises a base material layer, an anti-dazzle layer and a low-reflection layer which are sequentially stacked from bottom to top, the low-reflection layer contains low-reflection particles, and the anti-dazzle layer contains organic anti-dazzle particles and inorganic particles. The mass concentration of the organic anti-dazzle particles close to the base material layer is larger than the mass concentration of the organic anti-dazzle particles close to the low-reflection layer, the mass concentration of the inorganic particles close to the base material layer is smaller than the mass concentration of the inorganic particles close to the low-reflection layer, and the refractive index of the low-reflection particles is larger than the refractive index of the inorganic particles and smaller than the refractive index of the organic anti-dazzle particles. Seen from the direction from the low-reflection layer to the base material layer, the refractive indexes of all the layers are gradually increased. According to the anti-dazzle low-reflection optical film and the preparation method and application thereof, the optical film achieves high haze and low reflectivity and can be applied to a strong light environment.

An imaging device that is capable of causing a change in an aerial image, and can be reduced in size is provided. The imaging device includes, in a housing, a disk-shaped retro-reflection sheet in which a plurality of designs are formed at different positions, an LED light source configured to irradiate the retro-reflection sheet, a beam splitter, and a motor configured to rotate and move the retro-reflection sheet. The retro-reflection sheet is rotated and moved to enable switching of aerial images of the designs irradiated by the LED light source.

The invention provides a diffuse reflection target plate. The diffuse reflection target plate comprises a substrate; a plurality of microstructures; wherein the plurality of microstructures are distributed on the substrate; the substrate has a first reflectivity, and the microstructure has a second reflectivity; the first reflectivity is different from the second reflectivity; the target reflectivity of the diffuse reflection target plate is related to the first reflectivity and the second reflectivity. According to the diffuse reflection target plate, reliable large-range reflectivity can be achieved, and the test requirement is met. By changing the specification and / or distribution mode of the microstructure, the duty ratio of the substrate can be adjusted, then the target reflectivity of the diffuse reflection target plate is adjusted, the reflectivity range from 0% to 100% is covered, and flexibility and reliability are achieved.

The invention provides electronic equipment. The electronic device includes a display panel; the anti-glare optical layer is arranged on the light emitting side of the display panel, the anti-glare optical layer comprises a substrate and a microstructure layer, the microstructure layer is arranged on the surface of the substrate in the thickness direction of the substrate, and the microstructure layer comprises a plurality of microstructure units; wherein the size of a single microstructure unit is in direct proportion to the pixel density of the display panel. The electronic device can inhibit the flash point phenomenon and improve the visual definition of the displayed image while achieving the anti-glare performance.

Methods and devices to build and use multi-functional scattering structures. The disclosed methods and devices account for multiple target functions and can be implemented using fabrication methods based on two-photon polymerization or multi-layer lithography. Exemplary devices functioning as wave splitters are also described. Results confirming the performance and benefits of the disclosed teachings are also described.

The present invention discloses a privacy protection device and method based on physical light field modulation, which belongs to the field of optical devices and data security technology. In view of the problem that the existing privacy protection scheme relies on software algorithms, resulting in the risk of retaining original data, the device selectively attenuates the spatial frequency of the incident light field through an optical modulation unit, and implements irreversible destruction of high-frequency sensitive features (such as facial texture), while retaining low-frequency contour features (such as human body posture) to maintain machine vision functions. Users directly perceive that their privacy is protected through the optical phenomena of the physical appearance of the modulator (atomized surface, diffraction spot) without relying on electronic signal verification. This solution can effectively resist GAN data reconstruction attacks, is compatible with mainstream image sensors, and is suitable for scenarios such as smart security and medical image acquisition that require both privacy and machine vision.

The utility model relates to an optical composite film. The optical composite film sequentially comprises a first prism layer, a first base material layer, a haze attaching layer, a second prism layer, a second base material layer and a high-haze diffusion layer from top to bottom. Wherein the first prism layer adopts a microstructure design, the bottom width of the first prism layer is smaller than that of the second prism layer, the bad phenomenon of light interference is avoided, the second prism layer is composed of a prism group composed of high prisms and low prisms, and multi-angle and multi-layer regulation and control of light are achieved. In addition, due to the arrangement of the haze attaching layer and the high-haze diffusion layer, the diffusion effect and the shielding performance of the optical composite film are enhanced. Through the integrated design, the functions of a traditional multi-layer optical film and a diffusion plate are combined into a single film, the product weight and thickness are reduced, the product structure and the assembly process are simplified, and the production efficiency and reliability are improved. High optical gain is maintained, high shielding performance is achieved, and the advantages of improving display image quality, reducing product weight and thickness, simplifying product structure and assembly process and the like are achieved.

Provided is a glass laminate including: a glass substrate having a first main surface and a second main surface; a functional layer provided on a first main surface side of the glass substrate and including any one or more selected from an antiglare layer, an antireflection layer, and an anti-finger print layer; and a colored layer provided on a second main surface side of the glass substrate and having a hole-formed region in which a plurality of holes are provided, in which the hole-formed region has a visible light transmittance of 5% or more.

To provide a light source device capable of irradiating a desired irradiation region with a sufficient amount of light.SOLUTION: A light source device for irradiating two or more irradiation regions with light includes a plurality of light emitting units each having a light emitting surface on an upper surface thereof, optical lenses that correspond to the plurality of light emitting units respectively, have a first surface which contains a plurality of incident regions to which light emitted from the light emitting units is incident and are located on a light emitting surface side of the light emitting units, and a second surface which contains a plurality of emission regions corresponding to the plurality of incident regions respectively, and are located on the opposite side to the first surface, and are located above the light emitting surfaces of the light emitting units, and light converging units which correspond to the plurality of light emitting units respectively, have a plurality of light entering portions covering the light emitting surfaces of the light emitting units, and light exiting portions which are provided to correspond to the plurality of light entering units respectively, each light exiting portion having an area smaller than the area of each of the light entering portions, and each light converging unit being located between the light emitting unit and the optical lens.SELECTED DRAWING: Figure 1

The invention relates to the technical field of optical materials, and discloses organic silicon micropowder as well as a preparation method and application thereof. The organic silicon micro powder is composed of a plurality of polysiloxane microspheres, the surface relative smoothness of each polysiloxane microsphere is R, 1.02 < = R < = 1.30, R = Rq / Ra, Rq is the root mean square surface roughness of the polysiloxane microspheres, and Ra is the average surface roughness of the polysiloxane microspheres; the relative size uniformity of the organic silicon micro-powder is RSU, RSU = 1-phi / d2 > = 0.992, phi is the variance of the diameter of the organic silicon micro-powder, and d is the average diameter of the organic silicon micro-powder. The organic silicon micropowder has the advantages of higher light utilization rate, higher light transmittance and good light scattering and diffusion uniformity; after the material is applied to a light diffusion material, the light control fineness is high, the light transmittance and diffusivity are good, and the light transmittance and brightness are higher; and the flatness of the coating formed when the coating is used as a raw material for forming the coating is good.

The invention provides an oblique incidence high-efficiency broadband long-wave light splitting film, the working angle of the light splitting film is 45 degrees, an equivalent relation of double-sided design and single-sided design under oblique incidence is established through numerical calculation, 45-degree single-sided transmittance and reflectivity target values are set, and film system matching is performed by adopting a design method of alternating three refractive indexes. And then the same film system is plated on the two surfaces of the long-wave infrared substrate respectively, so that the preparation of the beam splitting film is realized. The objective of the invention is to realize high-efficiency light splitting of a long-wave infrared window in a transmittance / reflectivity ratio of 1: 1 in a wave band range of 7 [mu] m-12 [mu] m under 45-degree inclined incidence, and the light splitting film has the advantages of stable performance and small surface shape change, and is suitable for optical systems for imaging, detection and the like.

An optical stack including an optical diffuser and a first reflective polarizer disposed on the optical diffuser is described. For substantially normally incident light and for nonoverlapping first and second wavelength ranges: the optical diffuser has a first scattering rate R1 for at least one wavelength in the first wavelength range, and a second scattering rate R2 for at least one wavelength in the second wavelength range, such that R1 / R2 is greater than or equal to 2. The first reflective polarizer may transmit at least 40% of light for a first polarization state for each wavelength in the first wavelength range, may reflect at least 70% of light for an orthogonal 10 second polarization state for each wavelength in the first wavelength range, and transmit at least 40% of light for each of the first and second polarization states and for each wavelength in the second wavelength range.

The present invention discloses a friction-resistant light diffusion film, comprising a PET substrate layer, a light diffusion layer is provided on the upper surface of the PET substrate layer, an isolation layer is provided on the lower surface of the PET substrate layer, the isolation layer comprises a first resin coating and a plurality of soft particles, the first resin coating is fixed on the lower surface of the PET substrate layer by coating, the soft particles are embedded in the surface of the first resin coating, the soft particles form an uneven plane on the surface of the isolation layer, an anti-friction layer is provided on the side of the isolation layer away from the PET substrate layer, the anti-friction layer covers the first resin coating and the surface of the soft particles of the isolation layer. The present invention provides a friction-resistant light diffusion film, which can better protect the particles on the surface of the isolation layer of the light diffusion film, reduce the friction coefficient of the light diffusion film, and improve the friction resistance of the light diffusion film. The present invention also provides a method for preparing a friction-resistant light diffusion film.

Provided is a polyester film having good electrostatic adhesion. Disclosed is a polyester film having a polyester substrate film and a resin thin film layer on at least one surface of the polyester substrate film, wherein the polyester substrate film contains 0.01-950 ppm by mass of an ionic compound having a dissociation energy Q (kJ / mol) of anions and cations of 850 or less.

The invention provides a diffusion screen which can be applied to a projection display device, such as a head-up display system. The diffusion screen provided by the invention can reduce reflection of incident light on the surface of the diffusion screen and increase transmission, so that when stray light enters the surface of the diffusion screen, the stray light reflected into an imaging light path can be reduced, and the purpose of improving the imaging quality of a display system is achieved. Specifically, the diffusion screen provided by the invention comprises a first surface, a first film system is arranged on the first surface, the first film system is used for reducing the reflectivity of incident light on the first film system, and the first film system comprises multiple layers of first films with different refractive indexes.

Provided are a light emitting device capable of suitably shaping light from a plurality of light emitting elements, a manufacturing method for a light emitting device, and a distance measuring device.A light emitting device of the present disclosure includes: a substrate; a plurality of light emitting elements provided on a first surface of the substrate; and a plurality of structure bodies provided on a second surface of the substrate and through which light emitted from the plurality of light emitting elements is transmitted. At least any of the structure bodies includes a first structure body through which a first portion of the light is transmitted and a second structure body having a function different from a function of the first structure body and through which a second portion of the light is transmitted.

The invention relates to the field of optical thin films, in particular to a preparation method of an optical diffusion film. A preparation method of an optical diffusion film comprises the following steps: uniformly mixing a curing agent and polydimethylsiloxane, curing, and then carrying out oxygen plasma treatment and room temperature aging treatment to obtain a polydimethylsiloxane flat plate; dissolving PET particles and PMMA particles in a solvent to obtain a polymer solution; and placing a polydimethylsiloxane flat plate above the polymer solution, and standing to obtain the optical diffusion film. According to the application, PMMA is used as a high glass transition temperature component to be blended with PET, so that the overall glass transition temperature of a blending system is improved, and the practicability of the optical diffusion film in a high-temperature environment is improved; strong scattering is provided through the refractive index difference between air holes and a polymer phase, and a refractive index gradient is formed by using the refractive index difference between PET and PMMA, so that a secondary scattering interface is formed, and light absorption is reduced and high transmittance is maintained while high haze is ensured.

The present disclosure provides a stacked body for a display device comprising a substrate layer, a first layer, and a second layer, in this order; wherein a luminous reflectance of regular reflection light, when light is entered to a second layer side surface of the stacked body for a display device with incident angle of 60°, is 10.0% or less; and an absolute value of a difference, between yellowness YI1 of transmitted light in 60° direction with respect to a normal line to the second layer side surface of the stacked body for a display device and yellowness YI2 of transmitted light in 15° direction with respect to a normal line to the second layer side surface of the stacked body for a display device, is 3.0 or less.

A viewer for an optical data insertion device and a combined system comprising a viewer and an optical data insertion device. The optical data insertion device comprising a projector operable to project a visible image and a light guiding device operable to direct light from the projector into the viewer. The viewer comprising an objective lens, an eyepiece lens and a diffuser screen provided between the objective lens and the eyepiece lens.

The invention discloses a liquid crystal display device for improving contrast based on movable light guide lattice points and a light guide layer and a control method of the liquid crystal display device. The device comprises a backlight module, a dynamic light guide layer, a liquid crystal display panel and a control system. The dynamic light guide layer is packaged by two transparent substrates to form a sealed cavity, the cavity is filled with transparent base liquid and movable micro units with different refractive indexes, and transparent electrode arrays are arranged on the inner surfaces of the substrates. The control system controls the electrode array to generate a corresponding electric field according to brightness and darkness distribution of an input image signal, drives the micro-units to move in the base liquid and gather to the position below an image brightness field area so as to enhance light output, and meanwhile enables the micro-units to be dispersed below a dark field area so as to reduce light leakage. According to the invention, a static light guide structure is changed into a dynamic programming system, and the real-time pixel-level matching of backlight distribution and display content is realized, so that the contrast ratio is remarkably improved, the halo is inhibited, and the power consumption is reduced. The invention also protects the core component of the dynamic light guide layer and the corresponding control method.

The invention relates to the technical field of optical thin films, in particular to a high-transmittance low-haze upper diffusion film and a preparation method thereof. A high-light-transmittance low-haze upper diffusion film comprises a transparent base film and a nano coating coated on the surface of the transparent base film, and the nano coating comprises the following preparation raw materials: 30-40 parts of polyurethane modified acrylate, 20-30 parts of a high refractive index monomer, 10-15 parts of a functional monomer, 1.5-2 parts of nanoparticles and 2-4 parts of a photoinitiator. Wherein the nano particles are modified AlO / SiO nano composite particles. Through nano particle modification, functional monomer compounding and resin matrix optimization, the contradiction between light transmittance and mechanical performance of a traditional light diffusion film is broken through, comprehensive upgrading of optical performance (light transmittance / haze), mechanical strength (hardness / flexibility) and weather resistance (high temperature / aging resistance) is achieved, and the light diffusion film is suitable for high-end scenes such as ultra-thin OLED screens and vehicle-mounted display.

A barrier film for a wavelength conversion sheet, which can effectively suppress adhering of a light guide plate to the wavelength conversion sheet and suppresses damaging of a wavelength conversion sheet, a light guide plate, a diffusion plate, etc. A barrier film includes at least a barrier layer and base material layers. The barrier film has stacked on one surface thereof a mat layer including a resin and fillers which at least partially project from the mat layer. In a plan view, the proportion of the projecting fillers from the mat layer that are viewed as having a particle size at least twice the thickness of the mat layer is 20-80% of the total fillers projecting from the mat layer, and the total number of fillers in a square of 1 mm2 in the plan view of the mat layer is 1800 or more.

The invention provides a polaroid, an optical functional layer coating and a display device. The polaroid comprises an optical function layer, and the optical function layer comprises thermocuring resin, first ultraviolet curing resin, second ultraviolet curing resin and needle-shaped particles. The molecular weight of the thermocuring resin is 500,000-1,500,000, the number of acrylic functional groups of the first ultraviolet curing resin is 5-50, the number of acrylic functional groups of the second ultraviolet curing resin is 2-5, and the ratio of the length of the needle-shaped particles to the diameter of the cross section is 5-60. The optical functional layer coating comprises the components, a photoinitiator, a dispersing agent and a solvent, and the mass of the needle-shaped particles accounts for 6-18% of the mass of the optical functional layer coating. The display device comprises a display panel and a polaroid. Through specific combination of the three kinds of resin and the needle-shaped particles, the technical problem that the viewing angle increasing capacity of the polaroid is limited is solved.

The present invention relates to a flexible optical variable thin film with light-induced angle-dependent color change and a preparation method thereof. The base film is selected from one of biaxially oriented polyester film (BOPET), biaxially oriented polypropylene film (BOPP), OPP and nylon (PA) film. By using suitable equipment, processes and materials, an adhesive layer, a reflective layer, a refractive layer and a protective layer are plated and coated based on metals Cr\AL and polymers. It is fully considered that the finished product can still maintain flexibility after the drying and forming of each film layer, and light can propagate between different film layers. As a result of multiple reflections and refractions interacting with each other, an interference phenomenon of "two-color effect" of light occurs, resulting in a light-induced angle-dependent color change effect, and endowing the thin film with different bright lights and colors from multiple perspectives.

The present invention relates to novel image reconstruction methods and technologies. Embodiments of the invention specifically relate to image reconstruction using a flat lensless camera, or any other imaging device and / or imaging system, and a pre-trained diffusion model with a control network and a learned separable transformation. Additional embodiments of the invention include the addition of textual descriptions and / or text captions of the captured scene to further enhance image reconstruction.

Provided is an optical film comprising a first base portion; a pyramid pattern layer including a plurality of pyramid patterns formed on a first surface of the first base portion and a first side of a base of the pyramid pattern arranged in a pyramid direction; and a first prism pattern layer including a plurality of first prism patterns formed on a second surface of the first base portion and an edge of the first prism pattern arranged in a prism direction.

The invention discloses a composite brightness enhancement film and a preparation method and application thereof, and belongs to the technical field of optical films. The composite brightness enhancement film comprises a first prism layer, a first base material layer, a first back coating layer, a second prism layer, a second base material layer and a second back coating layer. The upper surface of the first base material layer is coated with the first prism layer, the lower surface of the first base material layer is bonded with the second prism layer through the first back coating layer, the second prism layer is arranged on the upper surface of the second base material layer, the second back coating layer is coated on the lower surface of the second base material layer, and an included angle exists between prism structure arrays of the first prism layer and the second prism layer. The range of the included angle is larger than or equal to 40 degrees and smaller than or equal to 60 degrees, or larger than or equal to-60 degrees and smaller than or equal to-40 degrees, and the haze of the first back coating layer is 10%-20%. According to the composite brightness enhancement film, the emergent surface of light can be more comprehensive, and the brightness uniformity is effectively considered while the front-view brightness is remarkably improved; and meanwhile, the first back coating layer with medium haze is matched, so that certain atomization and light leakage effects are achieved, and the emergent surface of light rays is more uniform.

The utility model provides a polaroid and a display panel, and relates to the technical field of display, and the polaroid comprises a polarizing layer and an optical film layer formed on the light emitting side of the polarizing layer; the optical film layer comprises a plurality of bulge structures arranged at intervals and flat structures filled among the bulge structures, the refractive index of the bulge structures is smaller than that of the flat structures, and the cross sections of the bulge structures are gradually reduced from bottom to top, so that after light is emitted out of the bulge structures with the smaller refractive index, the light can be emitted out of the bulge structures with the smaller refractive index; when the display panel rotates, the light can be diffused by the flat structure with the large refractive index, so that the angle of the light emitted out of the polaroid is increased, the large-viewing-angle light emitting effect of the display panel when a screen rotates is improved, and the use flexibility of a user is improved.