50 results about "Trigonal prism" patented technology

The present invention provides a LCD panel with an isosceles triangular cross-section having a base angle of 50 to 55 degrees, and an incident angle equal to 10 to 24 degrees. Several triangular prisms are installed downwardly on a prism sheet by using the base angle as a vertex angle for controlling the light to be travel in a parallel direction, and incident in a direction perpendicular to an oblique surface of a smaller surface of the prism. The oblique surface of a larger surface of the prism reflects the incident light completely and projects the light perpendicular to the bottom of the prism. An optical system provides a backlight for a liquid crystal display apparatus and an anisotropic diffuser installed at an orthogonal direction of a prism has a diffusion function such that the light can be diffused by the LCD panel and the two orthogonally installed polarizers.

An interpolation method for color correction generates correction signals Y, M and C from input signals R, G and B through interpolation. In this interpolation method, a triangular prism is selected from plural unit triangular prisms in RGB space, based on x, y and z coordinates of the input signals, a gradient factor and an intercept factor of the selected prism are read out from a memory, and correction data corresponding to the input signals is calculated through interpolation using the gradient and intercept factors from the memory, so that the correction signals are generated based on the calculated correction data.

The invention discloses liquid level measuring method and device based on an isosceles right triangular prism. Liquid level measurement is realized by utilizing the principles of refraction, reflection, total reflection, and the like of a light beam in an isosceles right triangular prism and extracting the liquid level characteristic information in linear array CCD image data. The measuring device mainly comprises a line light source, the isosceles right triangular prism, a linear array CCD, a control circuit, and the like, wherein the isosceles right triangular prism is placed into a container; the parallel light emitted by the line light source is projected into the triangular prism perpendicular to the side surface that a right-angle side of a cross section of the triangular prism is located, and is intersected with the side surface that the inclined side is located. The method is an optical liquid level measuring method without an optical imaging lens and has the advantages of less influence on precision by change of liquid concentration, relatively simple structure, operation in corrosive hostile industrial environments, and the like.

An optical sheet (100) includes a base film (110), a plurality of prism patterns (120) and a plurality of first embossing patterns (130). The prism patterns (120) are formed on an upper surface of the base film (110). Each of the prism patterns (120) has the shape of a trigonal prism and includes a first inclined surface (122) and a second inclined surface (124). The first and second inclined surfaces (122,124) are inclined with respect to the upper surface of the base film (110) and meet each other at a peak portion (126). First embossing patterns (130) are formed at the peak portion (126).

The invention relates to the technical field of glass processing, in particular to a triangular prism processing technology which is characterized by mainly comprising the following steps: dividing 1,grinding and polishing 1, adhering, dividing 2, grinding and polishing 2, degumming, chamfering, laser cutting 1, grinding and polishing 3, laser cutting 2, breaking, performing of rotary washing toremove surface dirt after breaking, and finally inspecting. Compared with a traditional process, the process is mainly characterized in that a shape machining mode and a laser cutting mode are applied, the material utilization rate is greatly increased, and the production efficiency is improved.

The invention relates to a compact infrared viewfinder optical system based on a free-form surface prism. The dsystem comprises a free-form surface prism, a triangular prism, a narrow-band optical filter, a near-infrared detector and a long-wave infrared detector; the free-form surface prism comprises a high-order aspheric surface, a second-order reflection free-form surface, a first-order reflection free-form surface and a light splitting plane which are connected in sequence; incident light is incident through the high-order aspheric surface and then sequentially reflected through the reflection free-form surface and the second reflection free-form surface. When reaching the light splitting plane, the light is divided into near-infrared light and long-wave infrared light, the near-infrared light is transmitted and then reaches the near-infrared detector after sequentially passing through the triangular prism and the narrow-band filter, and the long-wave infrared light is reflected and then emitted from the diffraction plane and reaches the long-wave infrared detector. Compared with the prior art, the system has the advantages of good imaging quality, compact structure and the like.

AFM tweezers includes: a first probe that comprises a triangular prism member having a ridge, a tip of which is usable as a probe tip in a scanning probe microscope; a second probe that comprises a triangular prism member provided so as to open / close with respect to the first probe. The first probe and the second probe are juxtaposed such that a predetermined peripheral surface of the triangular prism member of the first probe and a predetermined peripheral surface of the triangular prism member of the second probe face substantially in parallel to each other, and the first probe formed of a notch that prevents interference with a sample when the sample is scanned by the tip of the ridge.

A backlight assembly includes a receiving container having a receiving space, a flat-type light source, an optical member, and an inverter. The flat-type light source has a plurality of light emitting spaces spaced apart from each other and is received into the receiving space. The optical member has a prism pattern formed in areas corresponding to areas between adjacent light emitting spaces and disposed at a light emitting direction of the flat-type light source. The inverter generates a voltage for the flat-type light source. The prism pattern 1o includes prisms having a substantially trigonal prism and continuously connected one after another. Thus, the backlight assembly may improve brightness uniformity thereof and have a reduced thickness.

The invention belongs to an optical splitter in the field of solar batteries and relates to a biconical dispersion prism for a focus monochromatic solar battery system. The biconical dispersion prism comprises n identical triangular prisms, wherein the outer surface of each triangular prism consists of a rectangular bottom surface, two isosceles triangle end faces and two trapezoidal side faces, the two triangular end faces are polished surfaces, and an included angle between the two trapezoidal side faces is 1 / n of 360 degrees; the adjacent trapezoidal side faces of the adjacent triangular prisms are spliced together; and one of the two similar conical surfaces formed by splicing the triangular end faces serves as an incidence end face and the other one serves as an exit end face. The biconical dispersion prism of the invention can effectively reduce the volume of the dispersion prism and compress the splitting area, thereby reducing the production cost, improving the efficiency. The biconical dispersion prism is easy to machine and is suitable for large-scale production.

An optical sheet includes a base film, a plurality of prism patterns and a plurality of first embossing patterns. The prism patterns are formed on an upper surface of the base film. Each of the prism patterns has the shape of a trigonal prism and includes a first inclined surface and a second inclined surface. The first and second inclined surfaces are inclined with respect to the upper surface of the base film and meet each other at a peak portion. First embossing patterns are formed at the peak portion.

A backlight assembly includes a receiving container having a receiving space, a flat-type light source, an optical member, and an inverter. The flat-type light source has a plurality of light emitting spaces spaced apart from each other and is received into the receiving space. The optical member has a prism pattern formed in areas corresponding to areas between adjacent light emitting spaces and disposed at a light emitting direction of the flat-type light source. The inverter generates a voltage for the flat-type light source. The prism pattern 1o includes prisms having a substantially trigonal prism and continuously connected one after another. Thus, the backlight assembly may improve brightness uniformity thereof and have a reduced thickness.

The cross dichroic prism according to the present disclosure includes four prisms and two dichroic mirrors. Each of the four prisms has a triangle-prism shape. The four prisms are arranged to form a quadrangular prism as a whole in a manner such that the ridge line portions are located close to each other, a first plane of one prism faces a second plane of another prism, and a third plane faces outward. Each of the two dichroic mirrors is constituted of a dielectric multilayer film provided between the first plane of one prism and the second plane of another prism. The outermost layer of a dielectric layer constituting the dielectric multilayer film is provided in contact with each of the first plane of the one prism and the second plane of the other prism.

A head-mounted display apparatus includes a cross dichroic prism including four triangular prisms that are mutually bonded, and a first dichroic film and a second dichroic film provided between adjacent prisms of the four triangular prisms, a plurality of display panels arranged respectively opposite to a plurality of light incident planes of the cross dichroic prism, and a projection optical system configured to project light emitted from the cross dichroic prism onto a pupil of a user. The cross dichroic prism includes an optically imperfect part at a center of a bonded part of the four triangular prisms. A ratio between an aerial conversion length from each of light-emission planes of the plurality of display panels to the center of the bonded part, and a width of the optically imperfect part, is greater than or equal to 250:1.

Provided is an augmented reality (AR) device based on a waveguide with a holographic diffractive grating structure and an apparatus for recording the holographic diffractive grating structure. The apparatus includes a light source, a beam splitter, a first amplitude filter and a first triangular prism that are arranged on a path of a first light beam, and a second amplitude filter and a second triangular prism that are arranged on a path of a second light beam, in which a first part of the first light beam passes through the first triangular prism without attenuation, a second part of the first light beam passes through the first triangular prism after being attenuated, and the second light beam passes through the second triangular prism after being attenuated, and the holographic diffractive grating structure is recorded between the first triangular prism and the second triangular prism.

An optical sheet includes a base film, a plurality of prism patterns and a plurality of first embossing patterns. The prism patterns are formed on an upper surface of the base film. Each of the prism patterns has the shape of a trigonal prism and includes a first inclined surface and a second inclined surface. The first and second inclined surfaces are inclined with respect to the upper surface of the base film and meet each other at a peak portion. First embossing patterns are formed at the peak portion.

The embodiment of the invention provides a light path system for three-dimensional strain detection, a monocular three-dimensional image acquisition system and a three-dimensional strain detection system, belongs to the technical field of measurement technology and three-dimensional vision, and is specifically characterized in that a light source is arranged in front of a triangular prism and emits light so as to generate reflection light on the surface of a tested sample; a first reflective mirror is arranged on one side of the light source and reflects the reflected light to the first mirror surface of the triangular prism to form a first virtual image; and a second reflective mirror is arranged on the other side of the light source and reflects the reflected light to the second mirror surface of the triangular prism to form a second virtual image. Through the processing scheme of the invention, an optical path system in three-dimensional strain measurement based on a three-dimensional DIC algorithm can be simplified, the structure of the three-dimensional strain detection system is simplified, and the detection efficiency is improved.

A modified concentric spectrograph for diffracting light with high stray light rejection without astigmatism is provided. The modified spectrograph includes a grating, a lens, and at least one entrance port and one exit port. The grating has a concave surface and a meridian plane with a first side and a second side. The lens has a substantially planar surface and a convex surface. Preferably, the convex and concave surfaces are substantially concentric. The ports are substantially located on different sides of the meridian plane near a focal plane of the spectrograph. The position of a focal plane may be modified using an optically transmissive triangular prism with a reflective surface, and an optically transmissive block. The position of a focal plane may further be modified with one or more optically transmissive plates. Methods for using the spectrograph are also provided.

The invention relates to a DQPSK integrated demodulation device, and belongs to the field of optical communication. The device comprises a polarized light interference system, an optical detection array (900), and a coupler. A delay line interference apparatus is disposed at a rear end of a polarized light generating module, and comprises a polarizer (321), a beam shifter II (222), a quarter wave plate II (322), a steering prism I ( 411), a polarization beam splitting / combining device (510), a quarter wave plate III (323), a phase adjuster (730), an optical wedge pair (710), a reflector (420) and a polarization analyzer (324). A beam combining coupling module is disposed at the rear end of the delay line interference apparatus, and comprises a polarizing beam-splitting device II (520), a steering prism III (415), a beam shifter III (223), a half wave plate II (312), a beam shifter IV (224), a half wave plate IV (314), a half wave plate III (313), a triangular prism I (811), a triangular prism II (812), a lens I (821) and a lens II (822). The device provided by the invention is small in size, and is good in performance.

The invention discloses a multi-light source detection device and method. The multi-light source detection device comprises a hollow fixed seat, wherein the fixed seat is provided with a detection cell. The multi-light source detection device is characterized in that the fixed seat is also provided with a light detector, a rotatable prism, and a plurality of light sources; light emitted by one light source is refracted by the prism, passes through the detection cell, and then is received by the light detector. With the multi-light source detection device, light rays emitted by the light sources at different positions are refracted by the prism, then are allowed to respectively pass through the detection cell from a same position and a same straight line through rotation of the prism, and finally irradiate onto the light detector. The prism is a triangular prism, and the central axis of a mounting seat is coincident with the central line of the light detector and is vertical to a central symmetrical plane of the prism. The multi-light source detection device has the advantage of less reagent consumption, moreover, can realize multi-parameter detection, and achieves multi-parameter detection with a single instrument.

The invention discloses a large-view-field compact near-to-eye display device, and the device comprises a self-luminous LCOS module, an optical-mechanical module, a coupled-in triangular prism, a waveguide plate and a coupled-out module. The self-luminous LCOS module comprises an LCOS displayer provided with a white light LED. The optical machine module comprises a linear polarizing film, a PBS, afirst quarter-wave plate, a concave reflector, a second quarter-wave plate and a convex reflector. The incident plane of the optical-mechanical module is parallel to the self-luminous LCOS module, the upper end surface and the lower end surface of the waveguide plate are parallel, and a first preset included angle is formed between the waveguide plate and the emergent plane coupled into the triangular prism; the coupling-out module comprises a color multiplexing body holographic grating manufactured based on the angle multiplexing technology, is attached to the upper end face of the waveguidesheet and is used for coupling out polarized light transmitted by the waveguide sheet. According to the invention, the multiplexed color volume holographic grating manufactured based on the angle multiplexing technology is used as an optical coupling-out device, so that the dynamic range of human eye observation is greatly increased, and the field of view is expanded.

The invention discloses a light beam stabilizing device based on angle inertia-free feedback correction. The device comprises a reflecting mirror, a hollow retroreflector, a nanometer displacement table, a triangular prism, an acousto-optic deflector, a beam splitter, a lens, a position detector, a controller and the like. According to the invention, a non-mechanical control method based on the acousto-optic deflector is used for replacing a mechanical control mode in a conventional system, so that the influence of inertial errors is avoided, and the interference of environmental noise is reduced. The advantage of high response frequency (which can reach more than 1MHz) of the acousto-optic deflector is utilized to realize rapid and high-precision beam angle drift correction. The stable light beam adjusted by the method and the device can be widely applied to a super-resolution microscopic imaging system and a high-precision laser direct writing photoetching system.

The invention discloses a prism arranging machine with a turnover function, which comprises a machine table, the machine table is provided with a feeding translation carrying table, a prism pickup mechanism, a prism turnover mechanism, a prism arranging mechanism and a workpiece assembly carrying table, and the feeding translation carrying table is used for loading green discs; the prism pickup mechanism is used for picking up a triangular prism from the green disc and placing the triangular prism on the prism turnover mechanism; the prism overturning mechanism is used for overturning the triangular prism by a preset angle; the prism arrangement mechanism is used for picking up the triangular prisms turned over from the prism turnover mechanism and placing the triangular prisms on a glass plate of the workpiece assembly carrying table in an array mode. The sheet arranging precision is higher, the taking, placing and overturning functions are completed through independent mechanisms, the action process is faster and more efficient, and the production requirement is well met.

The invention discloses a glass drilling tool. The glass drilling tool comprises a tool disk which is uniformly provided with three straight round grooves; a tool rest is connected in each straight round groove in a sliding fit manner; blades are installed on the lower sides of the tool rests; a trigonal prism is fixedly connected to the center position of the upper sides of the tool disks; the three sides of the trigonal prism are each provided with an adjusting cylinder; the three adjusting cylinders correspond to the three straight round grooves one to one; a piston rod of each adjusting cylinder is fixedly connected with the tool rest in the straight round groove opposite to the adjusting cylinder; and a tool handle is fixedly connected to the upper side of the trigonal prism. The glass drilling tool has the beneficial effects that drilling can be conveniently performed on glass, the drilling diameter of the tool can be adjusted, a glass hole of any diameter within a certain rangecan be drilled, and the glass drilling machine is high in drilling precision.

The invention belongs to the technical field of optical couplers, and particularly relates to a nonlinear optical crystal laser frequency conversion coupler which comprises a nonlinear crystal. Triangular prisms are adhered to two sides of the nonlinear crystal through optical cement. The connection part between the triangular prism and the non-linear crystal is bonded through optical cement, so that the middle part between the triangular prism and the non-linear crystal is a hollow cavity. Expansion holes which are uniformly distributed are formed in the periphery of the optical cement. Injection ports in one-to-one correspondence with the expansion holes are formed in the surface of the optical cement. The expansion holes are designed to be oval. Uniformly-arranged plastic belts are arranged on the side, away from the cavity, of the expansion hole in the optical cement. According to the invention, the inclination angle of the triangular prism can be changed under the condition that the light position is not changed, so that the incident angle of the light is adjusted, and meanwhile, the influence on the precision of light multiplying power conversion due to a difference value ofmultiplying power conversion caused by incapability of realizing fine adjustment by manually moving the laser or coupler is avoided.

The invention discloses a metal container. The metal container comprises three triangular plates and three triangular insertion connection plates; the sizes and shapes of the three triangular plates are adaptive, and three triangular plates are spliced into a prism container of a trigonal prism structure; the container of the trigonal prism structure are placed inversely, the upper end of the container of the trigonal prism structure is set to be an opening end after inverted placement; the upper end portions of the three triangular plates are hinged and installed into a whole through an arranged articulated shaft; a point of intersection at the lower ends of the three triangular plates is set to be a detachable mounting structure; the plate faces of the triangular plates are further provided with leak holes; and the sizes of the three triangular insertion connection plates are adaptive to the sizes of the three triangular plates. According to the metal container, the three triangularinsertion connection plates only need to be lifted upward, so that the leak holes are exposed, articles can fall to the bottom from the leak holes, and the three triangular insertion connection platesare directly inserted into the lowest area when the metal container needs to be closed; and therefore, the metal container of the trigonal prism structure is used very conveniently.

The invention discloses a method and system for narrowing and expanding laser line width. The system includes a beam expanding device and a grating. The beam expanding device is used for one-dimensional beam expanding of the laser, and the grating is used for selecting the center wavelength of the laser. , so as to achieve line width narrowing. The beam expander is composed of a single prism or a prism group, and the single prism and the prisms forming the prism group are all isosceles right-angled triangular prisms. The invention has the advantages of simple structure, high processing precision, and little influence on the beam transmission wavefront. By selecting the incident angle of the prism and the number of prism group elements, different laser beam expansion magnifications can be realized, and the required narrow-band laser linewidth can be obtained. .

The invention discloses an auxiliary alignment device and method for beams of a double-beam light trap. The device is placed at the center of the light trap, and is characterized in that a pair of triangular prisms are right-angled triangles which are arranged in a mode that the planes where the right-angle edges on one sides are located are completely connected in an attached manner and the planes where the right-angle edges on the other sides are located are arranged in parallel to form a parallelogram prism, a plane mirror is horizontal with the reflecting surface facing upward, one of theplanes where the right-angle edges on the other side are located is fixedly arranged on one half side of the plane mirror in an attached manner, and the plane where the bevel edges of the pair of triangular prisms are located is plated with a semi-transparent semi-reflecting film; a pair of four-quadrant position detectors are horizontally arranged on the same plane and located above the plane mirror and the pair of triangular prisms. According to the invention, optical adjustment of the beams of the light trap can be simply and effectively assisted, the performance of the light trap is improved, and an efficient, rapid, convenient and consistent adjustment scheme is provided for a light force suspension system taking the light trap as a core component.

The present invention is selective micro machining method and system for different materials with near field optical virtual light probe. The present invention proposes selective micro machining with near field optical virtual light probe in nanometer size and provides one designed micro machining system. After the laser beam the laser emits after passing through the light filter and the polarizer is incidenced to the triangular prism, the refracted laser beam may be total internally reflected and the reflected laser beam out of the other side of the triangular prism is made to pass through the optical delayer and reflected by the reflector to the bottom of the triangular prism along the original path to form the virtual light probe. The material to be machined is set in certain distance below the bottom of the triangular prism for micro machining with the virtual light probe while being micro shifted with some miniature stage. The present invention has raised micro machining precision.

The invention discloses a system for enhancing the brightness of a projection picture, which comprises a reflection module and an illumination module. The reflection module comprises a first triangular prism, a second triangular prism and a relay lens, and the illumination module comprises a first illumination module and a second illumination module; the first emergent light of the first lighting module is perpendicular to the second emergent light of the second lighting module; the relay lens is arranged on a light path of the first emergent light and is located between the first triangular prism and the second triangular prism; the first triangular prism is located between the first illumination module and the relay lens, and any right-angle side of the first triangular prism is parallel to the first emergent light; the second triangular prism is arranged at the intersection of the first emergent light and the second emergent light, so that the second emergent light is consistent with the first emergent light in direction after being reflected by the bevel edge of the second triangular prism, the two illumination modules are converged into the same beam of light through structural reflection of the triangular prism, and the projection display brightness is improved.