7237 results about "Prism" patented technology

A prism for reflecting a laser includes: a single mounting cap at a first end of the prism, and first to seventh trihedral corner (TC) reflectors, each including a reflective surface including: three side edges, and three corners at respective intercept points between the side edges, wherein the seventh TC reflector, among the first to seventh TC reflectors, is on a second end of the prism opposite to the first end of the prism.

The invention discloses an egg surface microcrack detection system and method based on image analysis, and relates to the field of surface defect nondestructive detection.The method comprises the steps that a process identification interface module obtains a processing process identifier of an egg in real time; the multi-angle annular light source module is provided with a multi-band annular light source array comprising visible light and near-infrared LED lamp beads which are independently controlled, a polaroid group and a beam splitter prism are integrated, and visible light polarization images and near-infrared polarization images on the surfaces of the eggs are synchronously collected; the thermal excitation enhancement unit obtains a thermal infrared image; the process filtering module extracts the axial elongation of the mechanical stress microcrack after graded transportation, and calculates the mesh fractal dimension of the thermal stress microcrack after UV disinfection; the multi-modal feature fusion module generates a dual-channel crack probability graph; and the dynamic feedback control module outputs a micro-crack risk grade and adjusts the rotating speed of the objective table and the light source intensity. The method has the advantages that accurate judgment of mechanical and thermal stress cracks is realized, and curved surface reflection interference is broken through.

A handle. The handle can include a main body and a pivoting head having a substantially trapezoidal prism shape and pivotally coupled with the main body about a pivot axis. The pivoting head can have a first end including a first limit member and a second end including a second limit member, and each of the first and second limit members can include first and second surfaces, the first surface limiting movement of the pivoting head to a first position and the second surface limiting movement of the pivoting head to a second position. A pivot spring can interact with the main body to bias the pivoting head into the first position.

The invention discloses an inter-satellite laser communication load on-orbit receiving and transmitting optical axis coaxial self-calibration device and method, and belongs to the field of inter-satellite laser communication. Comprising a cube-corner prism, a coarse pointing mechanism, a beam expanding group lens, a color separation sheet, a fast reflecting mirror, a communication signal light emitting system, an optical filter, a light splitting sheet, an optical filter, a signal focusing mirror, a communication signal detector, a tracking focusing mirror and a tracking signal detector. Under the condition that beacon light is not used and a laser source is not additionally added, communication signal light is directly adopted to calculate and compensate the offset between the receiving optical axis and the transmitting optical axis through the cube-corner prism, the on-orbit alignment capture time is greatly shortened, and the cost, power consumption, size and weight of a self-calibration device are reduced.

The invention relates to a composite microprism reflective film integrated with various triangular pyramids and a mold manufacturing method thereof, the surface of the microprism reflective film is formed by an array of identical parallelogram unit bodies, and each parallelogram unit body is composed of three identical triangular pyramids A, three identical triangular pyramids B, a triangular pyramid C and a triangular pyramid D, the bottom surfaces of the triangular pyramid A, the triangular pyramid B, the triangular pyramid C and the triangular pyramid D are identical equilateral triangles, the inclination angles of the three pyramid surfaces of the triangular pyramid A are alpha / 2 and alpha / 2 and beta / 2 + respectively, the inclination angles of the three pyramid surfaces of the triangular pyramid B are alpha / 2 and alpha / 2 and beta / 2-respectively, the inclination angles of the three pyramid surfaces of the triangular pyramid C are beta / 2 + respectively, and the inclination angles of the three pyramid surfaces of the triangular pyramid D are beta / 2-respectively. Greater than zero. 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.

A system generates, based on a displacement bounds data structure and a triangle mesh modeling a surface of a 3D virtual object within a 3D virtual scene, a displaced triangle mesh including one or more displaced surface bounding prisms, each of the one or more displaced surface bounding prisms displaced from a respective base triangle of a plurality of base triangles of the triangle mesh structure based on displacement bounds defined in a displacement bounds data structure for an area of a 2D texture space corresponding to a location of the respective base triangle defined by the 3D virtual scene. The system performs, using the displaced triangle mesh structure, a ray tracing process for a ray associated with a pixel of a 2D image of the virtual scene including determining, responsive to determining the ray intersects the particular displaced surface bounding prism, a location of an intersection of the ray.

The invention relates to the technical field of laser, in particular to a dual-wavelength narrow-linewidth laser output device and method.The dual-wavelength narrow-linewidth laser output device comprises a semiconductor laser unit emitting linearly polarized light beams, and a light beam conversion lens is used for achieving conversion of semiconductor laser fast-axis light beams and semiconductor laser slow-axis light beams; the light beam conversion lens is used for collimating and compressing a semiconductor laser fast axis divergence angle, and the slow axis collimating lens is used for collimating and compressing a semiconductor laser slow axis divergence angle; the linearly polarized light beam is divided into a first light beam and a second light beam through the rectangular prism; the first light beam sequentially passes through a first volume Bragg grating, a first reflector, a half-wave plate and a polarization beam combiner; the second light beam sequentially passes through a second volume Bragg grating, a second reflector and a polarization beam combiner; the dual-wavelength narrow-linewidth semiconductor laser can solve the problems of precise regulation and control and power amplification of the central wavelength of the dual-wavelength narrow-linewidth semiconductor laser, has power expansibility, and realizes improvement of laser power by stacking a plurality of laser units in the vertical direction.

The invention relates to a shear-based acceleration and pressure composite sensor and an assembly method thereof, and belongs to the field of composite sensors. According to the technical scheme of the acceleration and pressure composite sensor based on the shear type structure, an acceleration detection module comprises a mass block of a regular polygon prism structure, and each side face of the mass block is provided with an acceleration sensitive ceramic piece; the pressure detection module comprises a force transmission column of a regular polygon prism structure, and each side face of the force transmission column is provided with a pressure sensitive ceramic piece, an electrode piece and an insulation block. According to the scheme, the sensitive elements of the acceleration sensor and the pressure sensor core are arranged in a polygonal mode to form a spatial three-dimensional structure, the effective area of the sensitive elements in unit volume is increased, the multiple sensitive elements act together to form superposition of pressure signals, the detection precision and sensitivity of the two are guaranteed, and the detection precision is improved. Therefore, the overall size of the composite sensor is greatly reduced on the premise that the original precision is maintained, and the composite sensor is miniaturized.

The invention provides a common-mode denoising dual-laser frequency measurement ultrahigh-precision small-angle measurement reference device, which comprises a first light path mechanism, a second light path mechanism and a beat frequency measurement module, the first light path mechanism and the second light path mechanism are arranged in parallel, and the light path mechanism comprises a laser generation device, a narrow-band interference sheet, a microprism array and a first annular piezoelectric module. And the components are fixed on a high-precision horizontal rotating table (7). According to the ultrahigh-precision small-angle measurement benchmark device for common-mode noise elimination double-laser frequency measurement, the cavity length is changed by rotating the cavity mirror to cause frequency change, the variable quantity of the angle is converted into the change of the frequency difference of laser output by the two devices, the narrow-band interference sheet is used for assisting adjustment to perform mode selection, the cavity mode change and interference frequency selection are highly synchronous, and the measurement accuracy is improved. According to the invention, mode hopping of the laser output frequency is avoided, continuous tunability of the output frequency along with the rotation angle is ensured, the problem of continuous measurement is solved, and small-angle ultra-high-precision measurement is realized.

The embodiment of the invention provides a projection system and optical display equipment. Wherein the projection system comprises a lens group, a prism and a display chip which are arranged in sequence; wherein the lens group is composed of a first lens, a second lens, a third lens and a fourth lens which are sequentially arranged, and the refractive index of the first lens, the refractive index of the second lens, the refractive index of the third lens and the refractive index of the fourth lens are larger than 1.6; the refractive index of the prism is less than 1.55; the projection system satisfies: 1 < = TTL / f < = 1.5; wherein TTL is the total optical length of the projection system, and f is the effective focal length of the projection system.

The invention provides an optical lens, a lens module and electronic equipment, the optical lens comprises a first lens group, a first prism, a second lens group and a second prism which are sequentially arranged from an object side to an image side, and the first lens group has positive focal power and is used for receiving light rays and converging the light rays; the first prism comprises a first incident plane, a first reflecting plane and a first emergent plane, a first included angle between the first incident plane and the first reflecting plane is smaller than 45 degrees, and the optical axis of the first emergent plane coincides with the optical axis of the second lens group; the second lens group has negative focal power; the second prism comprises a second incident plane, a second reflecting plane and a second emergent plane, a second included angle between the second reflecting plane and the second emergent plane is smaller than 45 degrees, the first included angle is equal to the second included angle, and the optical axis of the second incident plane coincides with the optical axis of the second lens group. According to the optical lens, the second lens group is arranged between the first prism and the second prism, so that the optical lens has relatively high focusing capability and macro effect and relatively high imaging quality.

The present disclosure relates to an active graded magnetic compensation system and method for an unshielded SERF magnetometer. The system comprises: a detection laser, a half-wave plate, a magnetic field compensation coil, a magnetic field modulation coil, a non-magnetic heating assembly, an alkali-metal atomic vapor cell, a polarizing beam splitter prism, a balanced photodetector, a graded feedback control module, a pump laser, a quarter-wave plate, a focusing lens and a photodetector. By means of the present disclosure, a graded compensation system is used to realize high-precision compensation for a magnetic field within a large dynamic range in a geomagnetic environment, thereby ensuring that an instrument carries out high-sensitivity magnetic field measurement under geomagnetic conditions.

The present invention discloses an in-situ detection device and method for the surface shape of an optical-mechanical component, which belongs to the field of optical precision detection technology, and aims to solve the problem in the prior art that there is a lack of in-situ monitoring and detection of surface shape distortion during the adjustment process of an optical-mechanical component. The laser light generated by the laser in the device is incident on the optical-mechanical component to be measured after passing through a beam isolator, a beam splitter prism, and a collimator A in sequence, and is reflected. The reflected light of the optical-mechanical component to be measured is incident on the beam splitter prism after passing through the collimator A and is reflected. The reflected light of the beam splitter prism is incident on a CCD camera after passing through a perforated light screen, a collimator B, and a phase plate. The CCD camera is connected to a computer system, and the light spot diagram recorded by the CCD camera will be input into the computer system for in-situ detection of the surface shape. The method modulates the reflected light of the sample to be measured by a phase plate, and uses a phase reconstruction algorithm based on light field diffraction iteration to realize sample surface shape reconstruction. It has the advantages of high measurement accuracy, no need for a reference plane, and strong vibration resistance.

The invention discloses a melamine paper surface defect detection system based on optical detection, and relates to the technical field of industrial optical detection, and the melamine paper surface defect detection system comprises a polarized light signal generation module which employs a high color rendering index white light source to irradiate the surface of melamine paper, obtains a surface reflection light beam array carrying different polarization states, and modulates the surface reflection light beam array into eight groups of independent polarized light signals; the multispectral imaging and registering module inputs eight groups of independent polarized light signals into a free-form surface prism group and performs light splitting to generate a diffuse reflection texture image, a mirror reflection image and a near-infrared perspective image, and constructs a three-channel space registering image matrix; and the light path calibration module is used for extracting defect coordinate data and confidence score based on the pixel-level defect thermodynamic image, and performing light path compensation by adopting a real-time feedback regulation mechanism to obtain a dynamically calibrated stable optical imaging signal.

The embodiment of the invention provides an optical module and near-to-eye display equipment. The optical module is used for XR optical equipment and comprises a cemented prism, a lens and a curved surface reflection element, and the lens is located between the cemented prism and the curved surface reflection element. The glued prism comprises a first prism and a second prism which are glued with each other, and the second prism and the lens are adjacent and are arranged at an interval; the curved surface reflection element comprises a sixth surface, the sixth surface is adjacent to the lens, and the sixth surface is a curved surface and is a partial reflection surface; the optical module further comprises a polarization reflection element and a phase delayer, the polarization reflection element is located between the first prism and the second prism, and the phase delayer is located between the second prism and the lens. The optical module meets the condition that EFL15 / EFL6 is larger than or equal to 0.2 and smaller than or equal to 4.1, EFL15 is the total effective focal length of the cemented prism and the lens, and EFL6 is the effective focal length of the curved surface reflection element.

The invention relates to a microprism reflective film combined by three kinds of triangular pyramids 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 B and C are the same equilateral triangles, the inclination angles of the three pyramid surfaces of each triangular pyramid A are alpha / 2, the inclination angles of the pyramid surfaces of the triangular pyramids B are beta / 2, and the inclination angles of the three pyramid surfaces of the triangular pyramids C are alpha / 2, alpha / 2 and beta / 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.

The invention discloses a mobile phone telephoto lens with reduced height. The mobile phone telephoto lens with reduced height sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a prism and an image surface from an object space to an image space, wherein the first lens has positive focal power; the second lens has positive focal power; the third lens has positive focal power; the fourth lens has negative focal power; the prism is provided with an incident plane, a first reflection plane, a total reflection plane, a second reflection plane and an emergent plane, and light emitted by the fourth lens enters the prism from the incident plane, is reflected at least once through the first reflection plane, the total reflection plane and the second reflection plane and then is emitted to the image plane through the emergent plane. According to the mobile phone telephoto lens with the reduced height, the large aperture, the small size, the long focal length and the high imaging quality of the lens can be realized.

The invention relates to the technical field of wafer warpage and curvature detection, in particular to a wafer warpage and curvature detection system and a detection method thereof, and the detection system comprises a laser, a beam expander, a diaphragm, a beam splitter prism, a collimating mirror, a reference mirror, an imaging lens, a CCD and a computer, the light beam is reflected by the sample to be measured and then returns along the same path to interfere with the reference light so as to generate three groups of interference fringes, and the three groups of interference fringes pass through the imaging lens, the CCD and the computer and then are calculated so as to obtain the warping degree and the bending degree of the sample to be measured. According to the invention, the multi-surface interference fringe pattern of the double-sided polished sample to be measured is acquired by using the wavelength-adjustable Hunfizeau interferometer, and the warping degree and the bending degree of the sample to be measured are obtained through calculation, so that the problem of mapping errors caused by measuring the surface shape by using two interferometers or overturning the measured surface shape is solved; therefore, the detection steps of the warping degree and the bending degree of the wafer can be simplified, and the precision of the detection result is improved.

This application relates to the field of telescopes, and provides a stabilized gimbal of an erecting prism, a stabilized monocular, and stabilized binoculars. The stabilized gimbal of an erecting prism includes a prism casing, a rotation frame, an external mounting bracket, and a drive control assembly, where the drive control assembly is configured to: drive the prism casing to rotate around a first rotation shaft, and drive the rotation frame to rotate around a second rotation shaft based on deflection position information of the prism casing, deflection position information of the rotation frame, and three-dimensional rotation angular velocity information of the erecting prism.

An optical module includes a base, a first cover, a circuit board, a light emitting assembly and a light receiving assembly. Part of the circuit board is arranged on a surface of the base, and part thereof arranged outside the base. The light emitting assembly includes a plurality of light-emitting chips disposed on the base and an optical multiplexer disposed on the first cover and located in a laser exit direction of the plurality of light-emitting chips. The light receiving assembly includes an optical demultiplexer disposed on the first cover, a plurality of light-receiving chips disposed on the circuit board and are located in a laser exit direction of the optical demultiplexer, a reflection prism disposed at a side of the plurality of light-receiving chips away from the circuit board, and an optical receiving case covering the plurality of light-receiving chips and the reflection prism.

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 embodiment of the invention provides an AR lens module and optical display equipment. The AR lens module is used for a full-color AR light machine, and comprises a lens group, an X-cube color combination prism and a display chip which are arranged along the same optical axis, wherein the lens group is composed of a first lens, a second lens, a third lens and a fourth lens which are arranged in sequence, and the fourth lens and the X-cube color combination prism are arranged adjacently; the focal power of the first lens and the third lens is positive, and the focal power of the second lens and the fourth lens is negative; the first lens, the second lens, the third lens and the fourth lens are all aspherical mirrors. The CRA of the AR lens module is 13 degrees, and the CRA is the included angle between the chief light of the edge field of view and the optical axis of the display chip.

The utility model relates to a two-axis prism motor rotating mechanism and a periscopic camera module thereof. The two-axis prism motor rotating mechanism comprises a prism module movably arranged in a base, the prism module comprises a prism; the prism is fixedly arranged on the first prism bracket; a second prism bracket is arranged below the first prism bracket; the first prism bracket drives the prism to rotate around a first shaft; the second prism bracket drives the first prism bracket to rotate around a second shaft; the first shaft is perpendicular to the second shaft; the second axis is parallel to the optical axis direction; the base is internally provided with a first driving assembly which is located on the side of the first prism support to drive the first prism support to rotate around a first shaft and a second driving assembly which is located below the second prism support to drive the second prism support to rotate around a second shaft. And a rotary guide mechanism is arranged between the second prism bracket and the base. According to the utility model, the rotation direction of the prism module is set on the first shaft and the second shaft by using the rotation guide mechanism and the rotation shaft, so that the optical imaging quality can be effectively improved.

The utility model discloses a three-color micro-projection optical system, the three-color micro-projection optical system is provided with an object side and an image side which are correspondingly arranged along an optical axis direction, the three-color micro-projection optical system comprises a diaphragm, a lens group and a color combination prism assembly which are sequentially arranged from the object side to the image side; the color combination prism assembly comprises a color combination prism, a red light-emitting chip, a green light-emitting chip and a blue light-emitting chip; the focal length of the three-color micro projection optical system is f, 5.9 mlt; flt; the thickness is 6.4 mm; the distance from the diaphragm to the image surface is the total optical length TTL and TTLlt of the three-color micro-projection optical system; and the thickness is 10.2 mm. By means of the arrangement, in the environment temperature range of 20-60 DEG C, the optical system does not defocus during working, the MTF full frequency is higher than 0.5, the total length of the optical system can be controlled within 10.2 mm, and the working performance is more stable.

A vehicle marker lighting device includes a light source. The light source has an elongate light pipe with a first end operatively coupled to the light source and a second end having a metalized surface. The light pipe further has a plurality of prism optics extending into an outside surface of the elongate body. An inner lens is operatively coupled to the light pipe to receive light reflected from the plurality of prism optics and to output the light beam.

The invention discloses a method and a device for measuring orthogonality of an orthogonal rotary shaft system, and belongs to the technical field of orthogonal rotary shaft system detection. The orthogonal rotary shaft system comprises a first rotary shaft system and a second rotary shaft system; the method comprises the following steps: carrying out axis inclination angle rotation error measurement and attitude fine adjustment by using a CCD (Charge Coupled Device) double-axis autocollimator, and a cubic reference prism and a double-sided optical flat which are respectively fixed with a first rotation shaft system and a second rotation shaft system; setting a reference cross line XY through the double-sided optical flat by using a second rotary shaft system; the cross curve of the reflected light beam of the cubic reference prism is overlapped with the reference cross curve XY by adjusting the mounting positions of the two rotary shaft systems; and rotating the first rotating shaft system, recording an angular deviation value and calculating an orthogonality value of the two rotating shaft systems. According to the invention, the reference drift error of mutual aiming of the two autocollimators is eliminated, the interference of the rotation error of the shaft system on orthogonality measurement is eliminated, and the precision and reliability of the orthogonality measurement of the shaft system are improved on the whole.

The invention relates to a double-pump light semi-transparent and semi-reflective miniaturized triaxial SERF atom magnetometer device, which is characterized in that single pump light is guided into a probe by a polarization maintaining optical fiber; and then one beam of pump light is divided into two beams of circular polarization pump light with the same light intensity by using a half-wave plate, a polarization splitting prism, a right-angle reflector and a quarter-wave plate, and then the two beams of circular polarization pump light vertically pass through the same alkali metal gas chamber. After the pump light penetrating through the air chamber passes through the semi-transparent and semi-reflective flat beam splitter, one half of the pump light is detected by the photoelectric detector and used for extracting magnetic field information, and the other half of the pump light returns to the original path and passes through the alkali metal air chamber for the second time. According to the invention, high-sensitivity simultaneous measurement of a three-axis magnetic field of the miniaturized three-axis SERF atom magnetometer is realized, the atomic spin polarizability is enhanced, the uniformity of the atomic spin polarizability in the air chamber is improved, and the technical problem of spin polarizability uniformity in miniaturized application of the SERF atom magnetometer is solved; and the application of the array type triaxial SERF atom magnetometer in the fields of magnetocardiography, brain magnetism and the like is facilitated.

The invention discloses a visible light and short wave infrared common-aperture optical system which is used for solving the technical problem that an existing multi-band common-aperture optical system cannot meet the detection requirements of large view field, high resolution and high sensitivity at the same time. The optical system comprises a visible light optical system and a short-wave infrared optical system, and a primary reflector, a secondary reflector, a beam splitter prism, a visible light relay lens group and a first imaging unit jointly form the visible light optical system; and the primary reflector, the secondary reflector, the beam splitter prism, the short-wave infrared image space telecentric relay lens group, the view field divider and the N second imaging units jointly form a short-wave infrared optical system. The optical system disclosed by the invention shares the primary reflector and the secondary reflector, so that the focal length of the optical system is increased, and the requirement of high resolution is met; and meanwhile, the short-wave infrared optical system adopts the view field divider and N second imaging units, and the large-view-field and high-sensitivity infrared detection requirements of the optical system on a dark and weak target are met through splicing of N paths of view fields.

The utility model provides a display system for improving AR optical display performance and a wearable device, which belong to the technical field of optical imaging and comprise a display unit, a transmitting mirror, a first prism and a second prism. The transmitting mirror is arranged on an emergent light path of the display unit, the first prism is arranged on a transmitting light path of the transmitting mirror, the rear surface of the first prism faces one side of human eyes, the upper surface of the first prism faces the transmitting mirror, the rear surface of the first prism is an inclined plane which is inclined downwards from back to front, and the second prism is arranged on the rear side of the first prism. The front surface of the second prism is an inclined plane which is inclined downwards from back to front and corresponds to the rear surface of the first prism, the rear surface of the second prism faces human eyes, a polarization reflection film and a phase delay film are arranged between the first prism and the second prism, and the polarization reflection film is attached to the rear surface of the first prism. The optical system is compact in structure, small in size, light in weight, thin in thickness, low in stray, good in imaging quality and large in field angle, and the user experience is greatly improved.

The embodiment of the invention relates to the technical field of semiconductor material processing, in particular to a processing method of a period-adjustable micro-nano oxidation periodic structure, which comprises the following steps: sequentially preparing a substrate, a metal layer and a semiconductor layer from bottom to top by using a physical deposition method to form a substrate-metal layer-semiconductor layer structure film from bottom to top; a light path composed of a femtosecond laser, an optical half-wave plate, a polarization beam splitter prism and a cylindrical lens is built; a femtosecond laser device is used for emitting femtosecond laser in a pulse string mode, after the femtosecond laser sequentially passes through an optical half-wave plate, a polarization beam splitter prism and a cylindrical lens, linear light spots are formed and focused on the surface of a structural film, and a micro-nano oxidation periodic structure is obtained; by changing the number of sub-pulses of the femtosecond laser, regulation and control of the period of the processed micro-nano oxidation periodic structure are realized. According to the method, efficient, economical, batch and accurate preparation of the micro-nano oxidation periodic structure is realized, and the method has a wide industrial application prospect.