50 results about "Wedge prism" patented technology

The present invention discloses a closed-loop optomechanical structure optimization method based on optomechanical thermal integration analysis, which belongs to the optomechanical structure design of large-aperture optical lenses. It solves the problems of low efficiency and insufficient reliability of the traditional optomechanical structure optimization process. By establishing a parametric model of a large-aperture wedge prism and a supporting component, the parametric model is subjected to finite element analysis using a finite element method to obtain node displacement data; optical system parameter analysis is performed in combination with an optomechanical interface to obtain optical system parameters, and then closed-loop optimization is performed in combination with an optimization algorithm model to obtain optimal structural design parameters, thereby completing closed-loop optomechanical structure optimization based on optomechanical thermal integration analysis; the structural optimization method of the present invention adopts a closed-loop integrated optimization algorithm to analyze and feedback the structural parameters, so that the optimization results can be accurately converged to the optimization range, reducing a large amount of repetitive labor in manually transmitting analysis data, saving analysis time, and improving the optimization efficiency of the optomechanical structure while having good reliability.

The utility model relates to an integrated laser welding cleaning device which comprises a laser output system, a collimation system, a first wedge-shaped prism and a focusing system, and the first wedge-shaped prism is arranged between the collimation system and the focusing system. The first wedge-shaped prism is provided with two non-parallel planes and used for changing the deflection angle and direction of an incident laser beam, and welding laser and cleaning laser emitted by the laser output system are collimated by the collimation system to form collimated welding laser and collimated cleaning laser. The laser beams pass through the first wedge-shaped prism from the hollow part and the non-hollow part of the first wedge-shaped prism and then enter the focusing system to form focusing welding laser and focusing cleaning laser, and the focusing cleaning laser and the focusing welding laser enter a workpiece to be welded to clean and weld the workpiece. According to the utility model, the wedge-shaped prism is arranged to adjust the focusing position of the cleaning laser beam, so that the laser cleaning and the laser welding are synchronously carried out, and the laser welding efficiency and the welding quality are improved.

The present application relates to a light spot analysis system, which comprises a shell and an analysis assembly, the shell is provided with an opening, and the analysis assembly is arranged in the shell and used for light spot analysis, the analysis assembly comprises a collimating lens, a wedge prism used for decomposing laser into a reflected light beam and a transmitted light beam, a measuring camera used for measuring the reflected light beam, and a tail light absorber used for absorbing the transmitted light beam, the collimating lens is arranged at the opening, and the wedge prism is arranged between the collimating lens and the measuring camera, wherein one analysis assembly is provided with a focusing lens, and the focusing lens is arranged between the wedge prism and the measuring camera. The present application can be applied to high-power laser measurement analysis of different wavelengths, and cost reduction is realized at the same time.

The embodiment of the utility model discloses a laser radar optical scanning system and a laser radar. The laser radar optical scanning system comprises a laser transmitting module, a laser receiving module, a wedge prism module and a motor driving module. The wedge-shaped prism module comprises a first surface and at least two second surfaces, and the extension direction of the first surface intersects with the extension direction of the second surfaces; the motor driving module drives the wedge prism module to rotate around the first rotating shaft; the first rotating shaft is perpendicular to the first surface; the laser emission module emits parallel laser beams to the first surface of the wedge-shaped prism module, and the parallel laser beams are refracted to a target detection area through the wedge-shaped prism module so as to scan the target detection area when the wedge-shaped prism module rotates around the first rotating shaft; the laser receiving module receives the echo laser beam reflected by the target detection area. According to the system, the weight of the wedge prism module is reduced, and the driving power of the motor driving module is reduced.

An optics assembly includes an eyepiece operable to receive virtual image light and project the virtual image light toward an eye side of the optics assembly. The optics assembly includes a rear lens disposed between the eyepiece and the eye side of the optics assembly. The optics assembly includes one or more wedge prisms integrated with the rear lens along a periphery of the rear lens. The optics assembly includes an eye tracking camera disposed outside the periphery of the rear lens in alignment with the one or more wedge prisms and operable to capture light that propagates from the eye side of the optics assembly and is refracted through the one or more wedge prisms.

The invention discloses a beacon rapid positioning and tracking system and method, and belongs to the field of atmospheric measurement. The ground receiving end comprises a scanning rack, a telescope, a wedge mirror, an imaging unit, a receiving end main antenna, a receiving end radio station and a receiving end auxiliary antenna; the transmitting end comprises a transmitting end shell, a transmitting end antenna, a transmitting end radio station, a beacon light, a tripod and an unmanned aerial vehicle. During measurement, the transmitting end transmits the position of the transmitting end antenna to the ground receiving end in real time, and the horizontal included angle between the transmitting end antenna and the receiving end main antenna and the height included angle between the transmitting end antenna and the ground horizontal plane are obtained through calculation by combining the position of the receiving end antenna. The ground receiving end adjusts a tracking and pointing system to enable the angles of the transmitting end and the receiving end to be matched based on the included angle and pitch angle data between the front and rear end antennas of the ground receiving end and the due north direction in combination with the angle information between the transmitting end and the receiving end, so that the beacon of the transmitting end can be stably tracked in different scenes, and parameter measurement can be efficiently and accurately realized after the beacon is locked.

The utility model discloses a welding device capable of controlling light spots through bidirectional rotation, which comprises a first wedge-shaped reflecting mirror rotating assembly, a second wedge-shaped reflecting mirror rotating assembly, an incident laser output assembly and a composite focusing lens, and is characterized in that the first wedge-shaped reflecting mirror rotating assembly comprises a first wedge-shaped prism and a first rotation driving piece; the second wedge-shaped reflector rotating assembly comprises a second wedge-shaped prism and a second rotating driving part, the second wedge-shaped prism is arranged on one side of the first wedge-shaped prism, and the incident laser output assembly provides incident laser for the first wedge-shaped prism; the first wedge-shaped prism reflects scanning reflection laser in the rotating process and serves as scanning incidence laser of the second wedge-shaped prism, the second wedge-shaped prism reflects scanning output laser in the rotating process, the scanning output laser is focused by the composite focusing lens and then acts on a workpiece to be welded, and the two wedge-shaped prisms are controlled to rotate through the rotating assembly. Dynamic change of light spots is accurately controlled, high-precision and high-quality welding is achieved, operation is convenient and fast, and cost is low.

An optical axis adjusting device and an actuator therefor are provided that can suppress fluttering of the optical axis of an anisotropic optical element even during high-speed rotation. [Solution] In an optical axis adjustment actuator (10) that can be fitted with a wedge prism and is rotationally driven by a voice coil motor, a bearing structure is constructed by sandwiching a rolling element (4) between a groove (212) on the movable part (2) side and a groove (312) on the fixed part (3) side that are radially opposed to each other.

An actuator for optical axis adjustment, which allows a wedge prism to be mounted thereon and is rotationally driven by a voice coil motor, has a bearing structure in which rolling members are sandwiched between a groove on a movable unit and a groove on a fixed unit that face mutually radially.

The application relates to a laser scanning device and method based on transmission metasurface-wedge mirror dynamic coupling, and relates to the technical field of optical scanning. A transmission metasurface divides a single laser beam into multiple transmission laser beams with the same light intensity, and the propagation directions of the multiple transmission laser beams are all deflected by an angle relative to the incident direction of the single laser beam. A wedge prism is arranged on the outgoing light path of the transmission metasurface and performs secondary deflection on the multiple transmission laser beams before the laser beams are emitted to a target surface. By controlling the transmission metasurface and the wedge prism to rotate at the same or different speeds, corresponding scanning tracks are generated to cover the target surface for laser scanning. By coupling the transmission metasurface and the wedge prism, the single laser beam is divided into multiple transmission laser beams, and the scanning angle is significantly increased in cooperation with the rotating process, so that the amount of data obtained in the scanning process is increased, and the scanning precision is improved.

To make it possible to simply prevent vibration of signal light in an optical communication optical system including wedge prisms.SOLUTION: An optical communication optical system has four groups, i.e., a first group (11) to a fourth group (14). The optical communication optical system satisfies a first relation based on focal lengths of the first group (11) and the second group (12), and a second relation based on rotation angles and apex angles of two wedge prisms that rotate in opposite directions at the same angle, in each of two pairs of wedge prisms in the third group (13).SELECTED DRAWING: Figure 1

An optical device and a method of extending a field of view of an optical device comprising a 5 fisheye lens configured to provide a substantially 360° azimuthal angle view with a forward direction at 0° radial angle and with a maximum radial angle θm, and a sensor configured to record an image through the fisheye lens. The method comprises the step of disposing one or more wedge prisms adjacent the fisheye lens, wherein each of the one or more prisms is configured such that a ray incident at more than θm radial angle is deflected to be captured 10 through the fisheye lens onto the sensor.

The invention provides an event camera laser earth-moon ranging and satellite multi-target tracking system, and solves the problems of detector saturation, insufficient dynamic range and low multi-target separation efficiency caused by solar noise in the daytime of traditional laser ranging. The system comprises an infrared enhanced event camera module (comprising an asynchronous event sensor, a rotary wedge prism and a two-stage interference filter with the bandwidth less than or equal to 2nm), an active laser synchronization control unit (FPGA (Field Programmable Gate Array) for realizing microsecond synchronization and dynamically adjusting an event trigger threshold, and a multi-modal data processing unit (executing a density threshold gt; through a triple anti-noise mechanism (spectrum / space / time domain filtering), the daytime earth-moon distance measurement precision is less than or equal to 0.5 m (distance gt; 384,000 km), the multi-target tracking capacity is greater than or equal to 5 satellites, and the power consumption is reduced to be less than or equal to 5W (gt of a traditional system; 50W) is provided.

The invention provides a light beam scanning device and system. The light beam scanning device comprises a first prism group and a second prism group. Wherein the first prism group and the second prism group are arranged along a first direction and rotate by taking the first direction as an axis. The first direction comprises the axis direction of the first prism group. The second prism group comprises a first prism and a second prism, and the main section of the first prism is perpendicular to the main section of the second prism. The first prism deflects around the second direction, the second prism deflects around the third direction, and the third direction comprises the normal direction of the main section of the second prism. Any two of the first direction, the second direction and the third direction are perpendicular to each other. And at least one prism in the first prism group and the second prism group is a wedge-shaped prism. The scanning precision of the light beam scanning device provided by the invention can reach a submicro radian level, the light beam scanning or light beam pointing precision is improved by one order of magnitude, and the pointing precision of the laser beam is greatly improved.

The optical assembly (207) includes a first optical element having a wedge prism (216). The first optical element is rotatable about a first axis (217) and is configured to receive a light beam (140b) at a first surface (214) of the first optical element and refract the light beam (140b) to a second surface (218) of the first optical element, and the light beam (140c) exits the first optical element at the second surface. It further includes a second optical element (220). The second optical element is spaced apart from the first optical element and is positioned to receive the light beam (140c) exiting the first optical element. The second optical element (220) is rotatable about a second axis (222) and is configured to refract the light beam (140c) at a first surface (224) of the second optical element and reflect the light beam (140d) by a reflective surface (226) of the second optical element before the light beam (140e) exits the second optical element.

The invention provides a non-adjacent optical wedge focusing mechanism and an exposure machine, and belongs to the field of optical focusing, the optical wedge focusing mechanism comprises an upper sliding mounting plate, an optical wedge bottom plate, an upper optical wedge assembly, a lower optical wedge assembly, a sliding guide assembly and an optical wedge driving assembly; the upper optical wedge assembly and the lower optical wedge assembly form a double-wedge prism unit of which adjacent wedge surfaces slide at intervals, and the optical wedge driving assembly drives the upper optical wedge assembly to move to adjust a gap between double optical wedges so as to realize focusing; according to the optical wedge focusing mechanism, the arrangement mode that the upper optical wedge is used for driving but is not adjacent to the process lens barrel is adopted, lifting focusing of the process objective lens is replaced, therefore, the influence on the precision of the main process objective lens is reduced, the focusing efficiency and precision are high, and the optical wedge focusing mechanism can be conveniently applied and popularized in the detection and processing fields of IC carrier plates, soft plates, HDI plates, multi-layer plates, ceramic substrates, alloy plates, wafers and the like.

The present invention belongs to the field of magnetic field imaging measurement, and provides a diamond NV center magnetometer imaging method and system, including: calibration and chromatic aberration elimination, focus positioning, high-pass filter filtration, and image capture. Through the structure of an achromatic lens, a wedge prism group, and a diamond NV center, the present invention reduces the laser spot size and improves the spatial resolution of the magnetometer.

The invention relates to the field of optics, and provides a device and a method for adjusting pointing and radial positions of light. The device for adjusting the pointing and radial positions of the light comprises a first driving part; the first optical wedge prism is mounted on the first driving part, and the first driving part is suitable for driving the first optical wedge prism to rotate in a plane perpendicular to the optical axis; the second driving part is arranged at the emergent end of the first optical wedge prism; the second optical wedge prism is installed on a second driving piece, the deflection angle of the second optical wedge prism is the same as that of the first optical wedge prism, and the second driving piece is suitable for driving the second optical wedge prism to rotate in the plane perpendicular to the optical axis; the third driving part is arranged at the emergent end of the second optical wedge prism; the optical flat plate is mounted on the third driving part, the third driving part is suitable for driving the optical flat plate to rotate in a plane parallel to the optical axis, and the optical axis penetrates through the optical flat plate all the time. The pointing and radial position adjusting device for light effectively decouples the adjustment of pointing and radial positions.

The utility model provides a laser stripping device. The laser lift-off device, which converts a first beam into a second beam having a width in the short-axis direction and the long-axis direction, comprises: a laser beam generation unit that generates the first beam; a homogenizer that homogenizes the first light beam; and a wedge prism that refracts at least a portion of the first light beam that has passed through the homogenizer, in which the wedge prism is configured so as to refract at least a portion of the first light beam that has passed through the homogenizer. The energy density of the second light beam incident to the second area of the image plane is greater than the energy density of the second light beam incident to the first area of the image plane.

The invention discloses a near-to-eye display device which comprises a control system, an illumination system and a projection system. The lighting system comprises a first driving module, a light-emitting part and a lighting module. The projection system comprises a second driving module, a display chip and a projection module; the first driving module and the second driving module are electrically connected to the control system, the light-emitting part is electrically connected to the first driving module, the display chip is electrically connected to the second driving module, and the display chip is connected between the illumination module and the projection module. The lighting module comprises a free-form surface prism, a dodging piece, a wedge-shaped prism and a right-angle prism which are sequentially arranged between the light-emitting piece and the display chip, and the refractive index n1 of the wedge-shaped prism is smaller than the refractive index n2 of the right-angle prism. Compared with the prior art, the light path complexity of the illumination module and the projection module is reduced, the energy utilization rate and the illumination uniformity of the illumination module and the projection module are improved, meanwhile, the size and the weight of the near-to-eye display equipment are effectively reduced, and the wearing experience of a user is improved.

The invention relates to a laser beam coupling device and method, relates to the technical field of laser coupling, and aims to solve the problems that an existing disc laser needs a position sensor to sense the rotation angle in real time, the rotation angle and the laser splitting distribution proportion need complex experiment debugging, and the use and production cost is greatly improved. The invention provides a laser beam coupling device which comprises an optical fiber coupler, a diaphragm and a beam splitting module, the optical fiber coupler and the diaphragm are connected with each other, the beam splitting module is connected to the end of the diaphragm and used for splitting laser entering the beam splitting module and coupling the laser into an optical fiber through the diaphragm and the optical fiber coupler, and the beam splitting module comprises a wedge prism and a deflection device. The wedge-shaped prism is driven by the deflection device to perform angle deflection, so that the laser entering the light splitting module is divided into two laser beams according to a required proportion, and the output power proportion of the optical fiber coupler to the inner core and the outer core of the cladding optical fiber is simply adjusted at low cost.

Systems and associated methods and techniques for illuminating and imaging a device, such as a microfluidic or microarray device, are described herein. An optical source that illuminates the planar surface at an oblique angle can be used with optical components, such as an offset optical shaping rod and a wedge prism, used to provide uniform illumination across the planar surface and allow the illumination to appropriately reach the target illumination area despite the geometric limitations imposed by the presence and position of imaging, microfluidic control, and / or thermal cycling components.

An optical device and a method of extending a field of view of an optical device comprising a fisheye lens configured to provide a substantially 360° azimuthal angle view with a forward direction at 0° radial angle and with a maximum radial angle θm, and a sensor configured to record an image through the fisheye lens. The method comprises the step of disposing one or more wedge prisms adjacent the fisheye lens, wherein each of the one or more prisms is configured such that a ray incident at more than θm radial angle is deflected to be captured through the fisheye lens onto the sensor.

The invention provides a blue laser and a method for generating a high-brightness light beam. The blue laser comprises a first light beam emitting and combining module, a second light beam emitting and combining module, a polarization beam combining module, a compression mirror group and an output module, wherein the polarization beam combining module, the compression mirror group and the output module are arranged in sequence; the first light beam emitting and combining module and the second light beam emitting and combining module each comprise a wedge-shaped prism and a secondary collimating lens, the wedge-shaped prisms are used for adjusting the fast axis divergence angle of at least part of light beams, and the secondary collimating lenses are used for reducing the slow axis divergence angle of the light beams. A high-brightness blue light laser with a wedge prism and a secondary collimating mirror is used, and light beams with non-ideal fast axis divergence angles and light beams with all slow axes are shaped, so that the area of condensed light spots of the light beams is reduced exponentially.

The invention discloses a laser scanning device and method based on transmission metasurface-wedge mirror dynamic coupling, and relates to the technical field of optical scanning. The transmission-type metasurface divides a single beam of laser into multiple beams of transmission laser with the same light intensity, the propagation direction of the multiple beams of transmission laser has a deflection angle relative to the incidence direction of the single beam of laser, and the wedge-shaped prism is arranged on an emergent light path of the transmission-type metasurface, conducts secondary deflection on the multiple beams of transmission laser and then emits the multiple beams of transmission laser to a target surface. By controlling the transmission-type metasurface and the wedge-shaped prism to rotate at the same or different rotating speeds, a corresponding scanning track is generated to cover a target surface for laser scanning. The transmission-type metasurface is coupled with the wedge-shaped prism, a single laser beam is divided into multiple transmission laser beams, the scanning angle is remarkably increased in cooperation with the rotation process, the data size obtained in the scanning process is increased, and the scanning precision is improved.

A device for imaging light, or a source of the light, includes a window for receiving incident light from the source, at least one metasurface, and at least one wedge prism. The metasurface and the wedge prism form a Risley pair and are displaced independently of each other. Each of the metasurface and the wedge prism are operative to deflect the incident light at an angle that is different from an angle of light incident upon them. Each metasurface includes a plurality of sub-wavelength structures that are operative to interact with the incident light received from the window. The device also includes a lens system that is operative to transmit the incident light received from the at least one metasurface and the at least one wedge prism and focuses it on a focal plane.

A method for cutting a material using a laser beam, comprising: providing a first wedge prism (310) and a second wedge prism (320) on a propagation path of a laser beam (10), and enabling the laser beam to enter the first wedge prism at an incident angle greater than 0 degree and less than 90 degrees and then to enter the second wedge prism at an incident angle greater than 0 degree and less than 90 degrees; focusing, by using a focusing wedge prism (400), the laser beam emitted from the second wedge prism and then applying the focused laser beam on a material (20); and deviating the position of the second wedge prism relative to the first wedge prism, and then forming a laser processing pattern on the material.

A camera includes a lens (310) defining an optical axis (122) and a prism (152). The prism (152) includes a first side (106) substantially perpendicular to the optical axis (122), a second side (108) adjacent the first side (106), where at least a portion (108b) of the second side is angled toward the optical axis (122) by a first angle. The prism (152) also includes a third side (110) adjacent to the second side (108) and defines a first vertex with the second side (108), where the third side (110) is adjacent to the first side (106) and defines a second vertex with the first side (106). The camera also includes a sensor (104) positioned along the third side (110) and configured to receive light reflecting from the second side (108).

The present invention provides a gas measurement gas chamber integrated with a humidity monitoring unit, which includes a front seat of the gas chamber, a heating tube, a lens seat, a corner cube prism, a wedge prism, a lens seat body of the gas chamber, a collimating lens, an optical fiber sliding seat, and a humidity detection unit. The corner cube prism and the wedge prism are fixedly arranged on the lens seat, and the corner cube prism is arranged close to the side of the front seat of the gas chamber. The corner cube prism and the wedge prism are located on the central axis. The collimating lens, the optical fiber sliding seat, and the humidity detection unit are arranged on the lens seat body of the gas chamber. The central axis of the collimating lens is parallel to and spaced from the central axis of the corner cube prism. When slight deformation occurs in the gas chamber structure, causing a certain change in the angles of the wedge lens and the corner cube prism, the light energy received by the receiving optical fiber remains basically unchanged, improving the assembly stability. The collimating lens has a double curvature, thereby reducing the influence of chromatic dispersion on light regulation and making the regulation of the light intensity in the gas chamber more convenient.

The application belongs to the technical field of laser radar scanning, and is based on a laser scanning system of a metasurface.The system comprises a laser, a front metasurface wedge-shaped prism and a rear metasurface wedge-shaped prism.The front metasurface wedge-shaped prism and the rear metasurface wedge-shaped prism are arranged in sequence along the laser light emission direction of the laser, and jointly form a prism group.The front metasurface wedge-shaped prism and the rear metasurface wedge-shaped prism can deflect incident light, and are coaxially rotatable under the action of an external mechanical device, so as to achieve a scanning range of 360° in the X-Y plane and ±40° around the Z axis.The application uses a metasurface device to replace a traditional prism, and has simple design and compact structure, which is conducive to the miniaturization and light weight of the laser radar.The application solves the problem of centroid offset of the traditional prism.Through selection of different metasurface unit structures and parameters, not only can the polarization sensitivity of the metasurface wedge-shaped prism be controlled, but also the control of different working wavelengths can be realized.