38 results about "Prism" patented technology

The invention discloses an altitude difference calibration method and a system of an inertial navigation prism and relates to the technical field of precise guidance and alignment of rocket vehicles.The method comprises the steps of fastening an inertia unit navigation system equipped with the prism, as a core rocket component, on a rotary table, collimating and observing horizontal azimuth angles and pitching angles of the inertial navigation prism in various positions through a theodolite by controlling different positions of the rotary table to rotate, calculating a horizontal azimuth angle and an altitude difference of a similar observation celestial body according to rotary table angles, the horizontal azimuth angles and the pitching angles of the corresponding positions, and calculating a mounting deviation of the inertial navigation prism. The method and the system are based on a celestial navigation altitude difference positioning principle, achieve precision calibration of the mounting deviation of the inertial navigation prism through multiposition observation of the inertial navigation prism, are high in precision and simple and convenient to use and have better socialextended application value and economic value.

A lens member includes at least one of the annular prisms including a facet at an edge between an inner annular surface and an outer surface of the at least one of the annular prisms. The prisms with facets may be provided at a central portion of the lens member and the facets are configured to refract light toward a light-exit side of the lens member.

The invention discloses a pole-side conductor sag observation method based on a total station instrument, which is suitable for performing conductor sag observation at the external side of pole span of an electric transmission line with the total station instrument. The total station instrument is disposed at the external side of the pole span to respectively detect the altitude differences of a conductor wire at mount points on a first pole tower and a second pole tower by means of a prism-free function; by means of a planar triangle formed by the observation point and projections of the mount points on the two pole towers, first planar distance and second planar distance are measured; according to geometric principles, projective triangle interior angles and pole span length are calculated and further the position of midpoint of the pole span is determined; the length from the observation point to the midpoint of the pole span is calculated and is multiplied by the tangent value of elevation angle of the total station instrument to calculate the altitude difference of the conductor wire at the midpoint of the pole span; the average value of the first and the second altitude differences minus the altitude difference of the conductor wire at the midpoint of the pole span is finally calculated to obtain the conductor sag. Compared with a conventional conductor sag measurement method, the method allows optional site selection, has high precision and is simple in operations, and can be used in the fields of ultrahigh-voltage transmission line construction, overhead transmission line engineering construction, and measurement and control technologies and instruments and the like.

A backlight unit, comprising plural linear light sources, and an optical functional sheet, wherein a prism structure having plural prisms is formed on at least one surface of the optical functional sheet, and the values of (H_n−1+H_n)/(A_n−A_n−1) are approximately equivalent, wherein, in a brightness distribution graph that expresses a brightness distribution in the optical functional sheet, A₁ is a peak site and H₁ is a peak height of a first virtual image, A₂ is a peak site and H₂ is a peak height of a second virtual image adjacent to the first virtual image, . . . , A_n is a peak site and H_n is a peak height of (n)th virtual image adjacent to (n−1)th virtual image, and these virtual images are derived from the plural linear light sources.

The invention provides a photographic device. In the photographic device comprising a photographic optical system component with a prism, the prism is fixed firmly so that the photographic device is not upsized. The photographic device comprises: a buffering part elastically supporting and retaining a lens frame of the photographic optical system component with the prism relative to a frame part; a prism retaining frame comprising a prism receiving chamber receiving the prism and forming a part of the lens frame; and an adhesive injection hole with one end being open at the outer surface of the lens retaining frame and the other end being open in the prism receiving chamber. The opening of the other end side of the adhesive injection hole is flat in shape and the length direction of the opening is the direction vertical to the direction where the buffering effect of the buffering part on the lens frame is weakest. The prism is fixed through adhesive injected from the adhesive injection hole.

The invention relates to an off-axis optical path three-dimensional microscopic topography measurement system. The system comprises an imaging object lens, an interference device and an image acquisition device. The interference device comprises a laser light source, a beam splitter prism, a first reflector, a second reflector, a fine adjustment reflector and a reference object lens. A laser lightbeam irradiates on the beam splitter prism via the first reflector and then outputs two light beams, the first light beam irradiates on a sample through an imaging object lens, and a reflected lightarrives at the image acquisition device via the imaging object lens and the beam splitter prism; the second light beam irradiates on the fine adjustment reflector via the second reflector and the reference object lens, the reflected light irradiates on the image acquisition device via the reference object lens, the second reflector and the beam splitter prism and forms a reference light, an off-axis angle of 1.52-7.57 degrees is formed between an object light and the reference light, thus, off-axis interference is formed, and an interference hologram is obtained through recording of the imageacquisition device. By optical path design, the system provided by the invention overcomes the difficulty that the conventional pre-magnified microscopic optical path optical wave curvature is difficult to adjust. The whole system is compact in structure and has high anti-noise ability.

The invention provides a display screen and a laser television. The display screen includes a reflecting prism, one side of the reflecting prism is a flat surface, the other side is a serrated reflecting surface, the reflecting surface includes a plurality of first reflecting surfaces and a plurality of second reflecting surfaces, the first reflecting surfaces are toward a projection light source of the display screen, the second reflecting surfaces and the first reflecting surfaces are different in direction, each of first reflecting surfaces is provided with a protrusion, and the protrusion has different thickness in different positions in a horizontal direction, so that after incident light irradiated on the first reflecting surface is reflected by the protrusion, a vertical plane where formed emergent light is and a vertical plane where the incident light is have an included angle. According to the display screen provided by the invention, the visual angle of the display screen in the horizontal direction can be increased.

The invention discloses a polystyrene photon crystal and the optic switch using the polystyrene photon crystal. The photon crystal makes quartz as a basal lamina where preparing a layer of polystyrene film on which periodic tetragonal arranged bores are etched. The optic switch comprises: a polystyrene photon crystal whose two end in the lateral direction are respectively connected with a first polystyrene film wave-guide and a second polystyrene film wave-guide, a first edge glass and a second edge glass. The invention has the advantages of: the semi-conducting material is replaced with the polystyrene, the high switch contrasted optical switch is realized by the third-order non-linear coefficient of the polystyrene, the time response is less than 25 fs, the preparation is simple, the using and measuring is convenient, the integration is suitable.

The invention discloses a non-scan intelligent digit integrated SPR detector, composed of an optical system, a sensor chip, and a signal check circuit, wherein the optical system comprises a LED light source, a polarizing disc, a lens and a mirror, the sensor chip is a glass sheet plated with a metal film on which a ligand is grown relative to the object molecule, the sensor chip is coupled on the lens, the signal check circuit comprises a LED drive circuit, a CCD array and a relative drive circuit, a signal detect and collect circuit, an A/D convert circuit, a MCU control circuit, and a digit communication circuit. The invention holds the characters of SPR sensor technique, while the invention uses wide-angle incidence of LED light source to avoid accurate incident angle scanning device, to simplify the angle adjuster, avoid the test error caused by transmission element, and improve operation property. The inventive integrated SPR detector can directly output digit, with high intelligent degree, small volume, portable property and easy application.

A video presenter includes a table, a supporting base disposed at one side of the table, a support arm formed in a generally arch shape and rotatably coupled to the supporting base, a camera head rotatably coupled at an upper end of the support arm, a lamp holder attached to an inwardly facing surface of the support arm, and a lamp unit rotatably coupled to the lamp holder and including a lamp cover having a curved inner surface with a varying radius of curvature. The lamp cover may have a plurality of prisms at its inner surface.

The invention discloses a plane lighting device. The plane lighting device comprises a light sources and an optic piece arranged above the light sources. The optic piece comprises an incident plane facing the light sources and an emergence plane departing from the light sources. The optic piece comprises a plurality of prism structures formed on the incident plane and a plurality of micro diffusing structures formed on the emergence plane. The prism structures protrude relative to the incident plane, and the micro diffusing structure recess towards the incident plane.

The invention relates to the technical field of chain teeth and in particular relates to a transparent flashing polyester chain tooth, a preparation method and a zip fastener. The transparent flashingpolyester chain tooth is prepared from PET (Polyethylene Terephthalate), TPU (Thermoplastic Polyurethane) modified master batch, a lubricant, an antioxidant and an ultraviolet absorbent, wherein theTPU modified master batch is prepared from isocyanate, polyol, a chain extender, a crosslinking agent and flashing powder; the flashing powder is composed of a micron-grade prism pyramid monomer polyacrylamide layer. According to the transparent flashing polyester chain tooth, the TPU modified master batch with relatively good toughness is added into a PET material, so that the transparent flashing polyester chain tooth has good toughness and anti-impact performance; furthermore, the surface of a micron-grade prism pyramid monomer is covered with the polyacrylamide layer and the crosslinking agent participates, so that the micron-grade prism pyramid monomer is uniformly dispersed in the PET material; compared with a manner of directly adding the micron-grade prism pyramid monomer or the flashing powder into the PET material, the transparent flashing polyester chain tooth has a more uniform and bright flashing property.

An optical axis marking and aligning device comprises a collimation light source, a cube-corner prism, a spectroscope and a near-far field observation system. The collimated light source is internally reflected by the cube-corner prism, the reflected light represents the optical axis of the collimated light beam, and the light beam reflected by the incident surface of the cube-corner prism represents the posture of the cube-corner. The position and direction of the reference optical axis are marked through the cube-corner prism, and the angular deviation between the incident optical axis and the reference optical axis and the transverse translation deviation between the incident beam position and the vertex of the cube-corner are determined through the near-far field observation system.

The invention discloses an optical color-changing anti-counterfeiting stay wire which comprises a base material, the surface of the base material is plated with multiple layers of transparent films ina vacuum mode, the transparent films are made of a color-changing material with a micro-prism effect, an image-text layer is tightly attached to the bottom surface of the base material, a laser layeris tightly attached to the bottom surface of the image-text layer, and a substrate is tightly attached to the bottom surface of the laser layer. A pressure-sensitive adhesive fills the joint of the laser layer and the substrate, the substrate is made of a transparent film material special for laser press polishing, a corona layer is formed on the surface of the substrate through corona treatment,the surface of the corona layer is coated with polyol resin, an image-text surface is arranged at the joint of the substrate and the image-text layer, and the image-text surface is located on the surface of the image-text layer. The image-text surface is a two-dimensional code surface layer formed by a multi-color film through multi-layer vacuum coating so as to facilitate counterfeiting prevention, and a laser surface is arranged at the joint between the image-text layer and the laser layer and located on the surface of the laser layer so as to enable the laser surface to be pressed and fixed on the bottom surface of the image-text layer.

The invention discloses a linear light spot output system. The device comprises a shell, a laser, a fast-axis collimating lens, a slow-axis collimating lens, a focusing lens and a Powell prism, one end of the shell is provided with a window, and the interior of the shell is provided with installation positions corresponding to the laser, the fast-axis collimating lens, the slow-axis collimating lens, the focusing lens, and the Powell prism. The laser, the fast-axis collimating lens, the slow-axis collimating lens, the focusing lens and the Powell prism are sequentially arranged in the shell, and the Powell prism is arranged on the side, close to the window, in the shell. Laser beams generated by the laser sequentially pass through the fast-axis collimating lens, the slow-axis collimating lens, the focusing lens and the Powell prism and then are output into linear light spots through the window. According to the light spot system disclosed by the invention, the optical fiber is canceledto be connected with related systems, so that the volume control of the system is better achieved, the cost of the system is powerfully reduced, and the light spot system has better light spot stability and uniformity.

The invention discloses an optical engine, and belongs to the field of laser projection and laser light sources. The optical engine comprises a light source assembly, a prism assembly, at least two light valves and a lens assembly. Light beams emitted by the light source assembly enter the at least two light valves, the light valves process the received light beams and then output the light beams to the prism assembly, and the prism assembly receives the light beams output by the light valves and emits the light beams to the lens assembly. According to the optical engine provided by the invention, the refractive indexes of prisms in the prism assembly are equal, and traveling distances of the light beams output by the at least two light valves between the light valve light-in surfaces of the prism assembly and the light-out surfaces of the prism assembly are equal so that the sizes of the light beams output by the light valves are the same when the light beams exit the prism assembly. The problem that the sizes of the light beams emitted by different light valves are possibly different when the light beams are emitted to a lens from the prism assembly in the prior art is solved. The sizes of the plurality of light beams emitted from the prism to the lens are consistent so that the imaging quality of the optical engine is improved.

The invention provides a beam shaping structure based on multiple stacks. The structure comprises a number of horizontally-spaced multi-stack structures. Each multi-stack structure comprises at leastn semiconductor laser stacks which are displaced in the vertical direction, wherein n is greater than and equal to 2. Each semiconductor laser stack comprises a number of laser bars arranged along theslow axis direction. The structure further comprises a self-polarizing beam combining prism which is arranged on the output optical path of each multi-stack structure and used to carry out polarizingand beam combining on beams output by the semiconductor laser stacks to acquire a primary output beam. The spot width of the primary output beam in the slow axis direction is reduced to half of the width of the output beams of the semiconductor laser stacks. The structure further comprises a shaping lens group which achieves beam rearrangement in the fast axis direction. According to the beam shaping structure, the mass of beams in the slow axis direction is reduced as much as half, and the mass of beams in the fast axis direction is unchanged. Compared with traditional methods, the beam shaping structure has the advantages of simple design, compact structure, convenient adjustment and low cost.