1667results about "Prisms" patented technology

An optical device for an aerial display apparatus includes: a planar base member; a plurality of optical elements provided below the base member, each extending in a first direction and aligned in a second direction orthogonal to the first direction; a reflection layer provided in each of the optical elements and configured to reflect light; and an absorption layer provided on the reflection layer and configured to absorb light. Each of the optical elements has an incident surface and a reflection surface which are inclined with respect to a normal direction of the base member and are in contact with each other. The reflection layer is provided on the reflection surface. The optical device is arranged in such a manner as to receive external light on the incident surface.

The disclosure relates to viewing optics, and more particularly to a viewing optic having an optical system with a prism and a microdisplay. The optical system can comprise a primary prism and a corrective prism.

The utility model relates to an efficient and low-cost brightness enhancement film which is composed of a first base material layer, a low-refractive-index coating and a first prism layer, the first prism layer is arranged on the front face of the first base material layer, the low-refractive-index coating is arranged on the back face of the first base material layer, hollow nano-particles are mixed in the low-refractive-index coating, and the diameter range of the hollow nano-particles is 20-500 nm. By optimizing the diameter and the adding proportion of the hollow nanoparticles, the reflectivity of the light incident surface of the brightness enhancement film is effectively reduced, the light transmittance is improved, and the brightness of the brightness enhancement film is further enhanced. Meanwhile, the pencil hardness and the wear resistance of the back coating of the brightness enhancement film can be improved by introducing the hollow nanoparticles, and in the optimal design, the brightness enhancement film comprises an integrally-formed biprism layer structure with different prism extension directions and vertex angles, and the brightness enhancement film can be obtained by controlling parameters such as the size of the hollow nanoparticles, the size of the hollow structure and the thickness of the low-refractive-index coating. The brightness enhancement film can be manufactured at low cost, and is higher in efficiency and more excellent in performance.

The invention relates to an antireflection film, an optical conduction assembly, a camera module and electronic equipment. The antireflection film is provided with a light inlet side and a light outlet side and comprises a first mixture film layer, a metal film layer, a second mixture film layer and an inorganic compound film layer which are sequentially stacked in the direction from the light inlet side to the light outlet side. The first mixture film layer and the second mixture film layer are made of aluminum oxide-praseodymium oxide mixed oxide. According to the antireflection film, the materials and the arrangement of the film layers are designed, so that the film layers can be matched with one another, the transmittance of the antireflection film is effectively improved, the reflectivity of the antireflection film is reduced, and the spectral bandwidth of the antireflection film is widened.

The invention discloses a dodging film, a backlight module, a display device and a preparation method of the dodging film, and relates to the technical field of display. The dodging film comprises a base material layer, a light source layer and a light source layer, the first atomization layer is arranged on the light emitting surface of the base material layer; and the second atomization layer is stacked on the first atomization layer far away from one side of the base material layer. The invention solves the problems that the existing dodging film technology has complex microstructure design, so that the mold processing is very difficult, the processing time is long, the success rate is low, and the roll-to-roll production efficiency and cost of the dodging film product are seriously influenced; and an existing uniform light film product still has insufficient shielding performance, so that an enough shielding effect is provided in a mode of overlapping three films during use, and the cost is relatively high.

A display system is provided The display system comprises a replicator arranged to receive spatially modulated light and replicate the spatially modulated light to form a plurality of replicas of the spatially modulated light by waveguiding between a reflective surface and a transmissive-reflective surface. The transmissive-reflective surface forms an output surface for the plurality of replicas of the spatially modulated light. The display system further comprises a light control device located in the optical path of the plurality of replicas of the spatially modulated light downstream from the output surface of the replicator. The light control device is arranged to compensate for the curvature of an curved optical component downstream from the light control device. The compensation is a function of the position on the output surface.

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.

A display selection button 10 comprises a light projecting unit 21, a light guide plate 13, a light receiving units 22, a control unit 30, and a printed sheet 14 and a LED 25. The light guide plate 13 has an incident surface 13a to which the light emitted from the light projecting unit 21 is incident, a plurality of prisms 13d that reflect incident light toward the side approaching or touching a finger and are provided at positions corresponding to push buttons 10c, and an exit surface 13b that emits the light reflected in the direction in which the finger approaches. The light receiving units 22 receive light emitted from the exit surface 13b and reflected from a finger. The control unit 30 detects the approach of a finger depending on the amount of light received by the light receiving units 22. The printed sheet 14 displays the desired numerals. The LED 25 emits light for displaying the desired numerals in the printed sheet 14.

An imaging lens assembly (21) according to the present disclosure includes: a prism (31) that bends a light incident from an object side and emits the light to an image side, the prism (31) being formed of resin material; and at least one lens disposed on the image side of the prism (31), wherein the imaging lens assembly (21) is configured so that: -1.0 < ((PNd - 1.75) * PNd * 100) PVd ≤ -0.56, where, PNd is a refractive index of the prism (31) and PVd is an Abbe number of the prism (31).

The embodiment of the invention discloses an optical system and head-mounted display equipment. In a specific implementation scheme, the optical system comprises an image source; the first prism is provided with a first surface, a second surface and a third surface, and the first surface of the first prism is close to the image source; the second surface of the first prism is located on the side, away from the second prism, of the first prism, the third surface of the first prism is located on the side, close to the second prism, of the first prism, the second prism is provided with a first surface, and the first surface of the second prism is close to the third surface of the first prism; the lens is located on the side, away from the first prism, of the second prism, a first included angle between the first surface of the second prism and the optical axis of the lens and a second included angle between the third surface of the first prism and the optical axis of the lens are acute angles, and the first included angle is equal to the second included angle; the first film layer is located on the second surface of the first prism and can reflect and transmit light; the second film layer is located on the side, away from the second prism, of the lens and can reflect light.

The invention discloses a super-condensation composite brightness enhancement film and a liquid crystal display backlight module, and particularly relates to the technical field of brightness enhancement films.The super-condensation composite brightness enhancement film comprises a core layer, an upper-layer brightness enhancement structure and a lower-layer brightness enhancement structure, the core layer is a multi-layer film made of poly (ethylene naphthalate) and a copolymer thereof, the upper-layer brightness enhancement structure is fixed to the top of the core layer, and the lower-layer brightness enhancement structure is fixed to the bottom of the core layer; the upper-layer brightening structure comprises a plurality of light gathering blocks, the light gathering blocks are distributed on the top of the core layer in a linear array mode, the light gathering blocks are arranged to be in a trapezoid quadrangular prism shape or a hexagonal pyramid shape, and the lower-layer brightening structure is fixed to the bottom of the core layer. The large-angle light of the incident surface is subjected to primary convergence through the plurality of inverse prism structures at the bottom of the core layer, and the large-angle light of the emergent surface is subjected to secondary convergence through the plurality of concave trapezoidal quadrangular prism-shaped or hexagonal pyramid-shaped light condensation blocks at the top of the core layer, so that the light loss is reduced, and the brightness of the backlight center is improved; and the hexagonal pyramid-shaped light condensation block can also improve the uniformity of the visual angle.

A display system is provided. The display system comprises a replicator arranged to receive spatially modulated light and replicate the spatially modulated light to form a plurality of replicas of the spatially modulated light by waveguiding between a reflective surface and a transmissive-reflective surface. The transmissive-reflective surface forms an output surface for the plurality of replicas of the spatially modulated light. The display system further comprises a light control device located in the optical path of the plurality of replicas of the spatially modulated light downstream from the output surface of the replicator. The light control device is arranged to provide a first compensation for the curvature of a curved optical component downstream from the light control device. The first compensation is a function of the position on the output surface and is arranged to only partially counteract the curvature of the optical component and retain some distortion from the curvature of the optical component of at least one of the replicas compared to another of the replicas.

Various embodiments of a laser illumination system are disclosed. In some examples, a system includes one or more lasers and a beam combiner configured to direct a combined light beam along a path. The system can include a polychroic optical assembly that receives the combined light beam and to output a first beam of the first light of the first wavelength and a second beam of the second light of the second wavelength. The second beam can be offset from the first beam. The polychroic optical assembly can be a prism assembly. The system can include one or more optical elements configured alter a distribution of light of the first beam to output a first output line at a sample plane, and to alter a distribution of light of the second beam to output a second output line at the sample plane.

The present disclosure discloses an optical imaging lens assembly including, sequentially from an object side to an image side along an optical axis, a first lens having negative refractive power; a prism having an incident surface, a reflecting surface, and an exit surface, and an angle between the reflecting surface and the optical axis being 45°; a stop; a second lens having positive refractive power; a third lens having refractive power; a fourth lens having positive refractive power; and a fifth lens having negative refractive power.

An apparatus and method for radiation measurement are used to determine clearance of a rotating gas turbine component. The apparatus includes a probe body on a stationary component outward of the rotating component and a pair of sensor assemblies coupled to the probe body. Each sensor assembly includes a plurality of prisms coupled to the probe body Each prism of the plurality of prisms has a distinct angular orientation to direct radiation from the focusing lens to the rotating component surface off-axis with respect to an axis of the respective radiation source of the pair of radiation sources and with less directional variation than radiation from the respective radiation source.

The invention belongs to the technical field of mobile phone periscope processing, and particularly relates to a mobile phone periscope prism processing technique. Comprising the following steps: S1, performing screen printing on a D surface, baking a finished product after screen printing, performing ultrasonic cleaning after baking, and inspecting a semi-finished product after cleaning; s2, plating an HR film on a B / C surface, removing and trimming by laser after plating the B / C surface, and performing ultrasonic cleaning after laser removal; s3, water-soluble ink screen printing is conducted on the face A, the face A is baked after screen printing, a groove and seven faces ABCJGEF are subjected to spin coating after baking, a finished product is baked after spin coating, the water-soluble ink on the face A is removed after baking, and then ultrasonic cleaning and cleaning inspection are conducted; and S4, plating an AR film on the surface A, performing silk-screen printing on the surface A, baking a finished product after silk-screen printing, cleaning the baked finished product, and inspecting the finished product. According to the method, the problem that the HR film is scrapped after the HR film is plated due to the fact that the optical window area is dirty and polluted after silk-screen printing and the cleaning is not thorough is solved, and meanwhile, the problem that the HR film at the non-optical window position is overlaid on the silk-screen printing ink surface after the HR film is plated by a traditional process and the surface quality is caused is avoided.

An optical communication optical system includes four groups of a first group to a fourth group. The optical communication optical system satisfies a first relationship based on focal lengths of the first group and the second group, and a second relationship based on a rotation angle and an apex angle of two wedge prisms in which the third group rotates in opposite directions at the same angle in each of two wedge prism pairs.

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 periscope head image difference compensation method and system, a computer and a storage medium, a periscope head comprises a reflecting prism, a lens group and a diffractive optical element, and the non-reflecting surface of the reflecting prism is provided with a polarization coating; the method comprises the following steps: constructing an optical path model according to design requirements of a periscope lens module, and carrying out aberration analysis on the optical path model; calculating a chromatic aberration compensation phase function of the diffractive optical element according to a chromatic aberration compensation formula; calculating a spherical aberration compensation phase function of the diffractive optical element according to a spherical aberration expansion formula; and calculating a total phase function of the diffractive optical element, and performing aberration compensation on the optical path model according to the total phase function. According to the long-focus periscope lens module, the total aberration of the periscope lens module can be compensated by utilizing the cooperation of the diffractive optical element and the reflecting prism with the polarization coating, so that the size of the long-focus periscope lens module is reduced, and the imaging quality of the long-focus periscope lens module is improved.

The utility model provides a prism and a display device, the prism comprises a first surface, a second surface, a third surface and a fourth surface, the first surface, the second surface and the third surface are connected pairwise, one end of the fourth surface is connected with one end of the second surface, and the other end of the fourth surface extends in a direction far away from the third surface; wherein the image source light enters the first surface from the third surface, is totally reflected to the second surface, is finally totally reflected to the first surface and is transmitted to the eyes of a human body; the real light is transmitted into human eyes through the fourth surface, the second surface and the first surface. The prism is provided with the four surfaces, the first surface and the second surface are used for totally reflecting the light emitted by the image source and the light of the real world, and the third surface and the fourth surface are used for transmitting the light of the image source and the light of the real world, so that the light angle of the light of the image source and the light of the real world entering the prism is corrected. The image imaging effect of the prism is enhanced, so that the display device is smaller and lighter.

Disclosed is a total reflection based compact near-eye display device with a large field of view. Light rays emitted by an image source (103) are transmitted by using a total reflection prism (101), and are finally subjected to image magnification by means of a near-eye refractive component (105), such that a near-eye display effect with a large field of view is achieved under the conditions of a compact volume.

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 invention relates to a microprism reflective film with three kinds of triangular pyramid combinations and a manufacturing method of a mold of the microprism reflective film, the surface of the microprism reflective film is formed by an array of identical parallelogram unit bodies (1), each parallelogram unit body (1) is composed of four identical triangular pyramids A, one triangular pyramid B and three identical triangular pyramids C, the directions of the four triangular pyramids A and the directions of the three triangular pyramids C and the triangular pyramids B form 180 degrees, and the three triangular pyramids C and the triangular pyramids B are arranged among the four triangular pyramids A in a staggered manner; the bottom surfaces of the triangular pyramids A, B and C are the same equilateral triangles, the inclination angles of the three pyramids of each triangular pyramid A are alpha / 2, the inclination angles of the three pyramids of each triangular pyramid B are beta-alpha / 2, and the inclination angles of the three pyramids of each triangular pyramid C are alpha / 2, alpha / 2 and beta-alpha / 2 respectively. According to the method, the performance under different application conditions can be reasonably optimized, so that wide-angle performance improvement and optimization and balance of overall comprehensive performance can be realized.

Imaging lens arrangement (100), comprising: an optical plastic element (110), comprising: an incidence surface (111), wherein an imaging light enters the optical plastic element (110) through the incidence surface (111); a reflective surface (112), wherein the imaging light changes direction through the reflective surface (112); an exit surface (113), wherein the imaging light exits the optical plastic element (110) through the exit surface (113); and at least one connecting surface (130) which is used to connect the incident surface (111), the reflecting surface (112) and the exit surface (113), wherein the at least one connecting surface (130) comprises: a sprue (131) which is arranged on the at least one connecting surface (130), and wherein the sprue (131) is raised relative to an adjacent section (134) of the at least one connecting surface (130); a divergent nozzle surface (132) connected to the sprue (131) and the adjacent section (134), wherein the divergent nozzle surface (132) diverges from the sprue (131) and extends in a direction of the adjacent section (134); and a gate remnant (133) which is arranged on a surface of the sprue remnant (131), wherein a contour of the gate remnant (133) is linear and the gate remnant (133) extends over the surface of the sprue remnant (131); wherein, when projected along a direction in a front view of the adjacent section (134) of the at least one connecting surface (130), a projection surface of the divergent nozzle surface (132) is As, a projection surface of the sprue residue (131) is Ag, and the following condition is met: 0.08 ≤ As / Ag ≤ 0.68.

The invention relates to a manufacturing method of a microprism reflective film die integrating two triangular pyramids and a reflective film, and the manufacturing method of the die comprises the following steps: 1, respectively rotating a die base material on a B-axis rotary table to 0 degree, 120 degrees and 60 degrees, and machining a first tool to a third tool by using a first tool with a tool angle alpha mounted on a fly-cutter disc; the mold base material is rotated to be located at the 0-degree position, the 120-degree position and the 60-degree position, machining of the fourth tool, the fifth tool, the sixth tool and the sixth tool is conducted, in the machining of the fourth tool, the fifth tool, the sixth tool and the sixth tool, the first tool is used for machining, the second tool is used for machining, the first tool and the second tool are symmetrical tools, and the inclination angles of the two sides are the same. While better performance indexes under different application conditions are obtained, the influence of large conical surface angle deflection angle processing or asymmetric design on optimization and balance of the retroreflection performance of 0 / 90 / 180-degree orientation of the reflective film can be reduced.

The present invention discloses a device and method for realizing simultaneous equal optical path confocal detection of both sides of a crystal grain by using a polarization image splitting method. The device comprises a CMOS or CCD camera, a telecentric imaging lens, a polarization image splitting prism assembly, a polarization cube beam splitter, a right-angle image rotation prism, a semiconductor crystal grain and a transparent glass stage for holding the semiconductor crystal grain, which are sequentially arranged in the direction of the optical path. The device and method of the present invention have the following advantages: although the double images of adjacent sides of the semiconductor crystal grain are spatially separated on the polarization image splitting prism assembly, the polarization imaging of both sides of the semiconductor crystal grain satisfies complete equal optical path, i.e., △=0, or quasi-equal optical path △≈0.

The utility model discloses a composite film, a backlight module and a television, the composite film comprises a first prism film and a second prism film which are laminated, the first prism film is provided with a plurality of first prism structures extending along a first direction, and the second prism film is provided with a plurality of second prism structures extending along a second direction; wherein the first direction intersects with the second direction; according to the invention, the influence on visual effect caused by brightness reduction due to addition of an additional diaphragm can be avoided, so that the cost is reduced.

An optical film according to various embodiments of the present disclosure may include a first sheet, a second sheet, and a third sheet, the first sheet includes a first base portion, a pyramid pattern layer in which a plurality of pyramid patterns having a base length of a first pitch and a diagonal length of 1-1 pitch are formed on a first surface of the first base portion, and a first prism pattern layer in which a plurality of prism patterns having a base length of a second pitch are formed on a second surface of the first base portion. The second sheet includes a second base portion, a second prism pattern layer having a plurality of prism patterns formed on a first surface of the second base portion, and a first diffusion layer formed on a second surface of the second base portion and disposed over the first sheet so as to face and overlap the pyramid pattern layer. The third sheet includes a third base portion, a third prism pattern layer having a plurality of prism patterns formed on a first surface of the third base portion, and a second diffusion layer formed on a second surface of the third base portion and disposed over the second sheet so as to face and overlap the third prism pattern layer.

The utility model discloses a microstructure spectacle lens and a pair of glasses, and belongs to the technical field of eye vision optics. The lens comprises a mother lens and a plurality of prism units arranged on the mother lens; the mother mirror has a geometric center, and the plurality of prism units are arranged around the geometric center; the mother mirror has a thickness direction and a radial direction perpendicular to the thickness direction; each prism unit comprises a binding surface connected with the mother lens and at least one refracting surface protruding out of the mother lens in the thickness direction; the refracting surface and the binding surface are connected with each other; the refracting surface is inclined to the thickness direction; the maximum size of the binding face in the radial direction is n mm, the maximum size of the refraction face and the binding face in the thickness direction is m mm, and n / m is larger than or equal to 10 and smaller than or equal to 3000. The prism unit is arranged to deflect the light when the incident light passes through the refracting surface of the prism unit, so that the focus is deviated from the macular center of the retina, the imaging quality is influenced, and the effect of inhibiting further occurrence and development of ametropia is achieved.