90 results about "Prism pair" patented technology

The invention relates to the technical field of microscopes, in particular to a stereomicroscope which comprises an eyepiece, an interpupillary distance adjusting assembly, an optical hinge set, a prism steering set, a distributed reflection light path assembly and a continuous zoom objective lens set. The distributed back-shooting light path assembly comprises a negative lens group, a positive lens, a negative lens and a positive lens group, the negative lens group is arranged between the prism steering group and the continuous zoom objective lens group, the positive lens is arranged between the optical hinge group and the prism steering group, and the negative lens and the positive lens group are arranged between rectangular prisms in the optical hinge group; a negative lens group, a positive lens group, a negative lens group and a positive lens group are sequentially arranged among all parts of the stereomicroscope, so that the space layout of a mechanical structure is combined, the aperture of a light beam is adjusted, interception of the prism to the light beam is reduced, and off-axis vignetting is reduced; the technical problems of large off-axis vignetting and poor imaging quality caused by the fact that a light path passes through a plurality of groups of prisms in a stereomicroscope in the prior art are solved, and the overall imaging requirement is met.

The invention discloses a three-magnification double-telecentric light path object detection system and method. A detection part is arranged between a light source module and an object space telecentric light path module; the light source module comprises a white light annular LED array light source set and an adjustable grating arranged on one side, and a light uniformizing piece is arranged in the white light annular LED array light source set. Light emitted by the array light source group is homogenized by the built-in light homogenizing sheet and then forms uniform light beams through the adjustable diaphragm, and the uniform light beams are projected to the surface of a detection part; a light path switching mechanism is arranged on one side of the object space telecentric light path module, and the object space telecentric light path module comprises a low-magnification object space light path, a medium-magnification object space light path and a high-magnification object space light path; the light path switching mechanism is used for switching any one of a low-magnification object space light path, a medium-magnification object space light path and a high-magnification object space light path to enable light rays to be projected to the beam splitter prism, ambient light is removed through the beam splitter prism, and the transmitted light rays are transmitted towards an image space telecentric light path to enable the light rays to be projected to the industrial camera for imaging.

Devices and methods for rendering a scene using ray tracing are provided which include prior to ray tracing any frame of the scene: generating, for each frame, a low resolution mesh from a high resolution mesh representing objects in the scene, the low resolution mesh comprising a plurality of micro-meshes each defining a geometric shape; sub-dividing the micro-meshes; and generating, for each micro-mesh, a displaced micro-mesh. For a frame of the scene, at least one displaced micro-mesh is traced using a bounding prism hierarchy on a condition that a prism is hit by the ray. The bounding prism hierarchy comprises the prism bounding the displaced micro-mesh and a plurality of sub-prisms each bounding a portion of the displaced micro-mesh. At least one other displaced micro-mesh is ray traced using the prism without the plurality of sub-prisms on a condition that the prism is not hit by the ray.

The present disclosure provides a method and system for forming an infrared complex image of a moving target and performing synthetic aperture imaging using a sub-mirror array. The method comprises: using a spatial light modulator to phase-modulate an initial linearly polarized laser local oscillator to obtain an orthogonal phase-modulated laser local oscillator; using a depolarizing beam splitter in each sub-mirror module to combine the orthogonal phase-modulated laser local oscillator and a target infrared signal processed by Fourier transform to obtain a combined beam signal; using a direct array detector to receive the combined beam signal, generate a holographic image corresponding to the sub-mirror module, and combine the laser local oscillator image to construct an infrared complex image corresponding to the sub-mirror module; and performing synthetic aperture imaging on the infrared complex images corresponding to the multiple sub-mirror modules based on sub-mirror array parameters and target distance parameters to obtain a synthetic aperture imaging result, wherein the infrared complex images corresponding to each of the multiple sub-mirror modules are obtained at the same moment during the motion of the moving target.

The invention relates to the technical field of panoramic morphology and deformation measurement, and particularly discloses a multi-view digital image correlation measurement method based on a mirror-assisted full surface, and the method comprises the steps: arranging and configuring a novel mirror-assisted multi-view digital image system of an optical structure; samples and calibration image pairs of a tested sample in a mirror surface and a prism before and after deformation are collected based on a system, system imaging parameters are calibrated based on the calibration image pairs, and a virtual curved surface, the three-dimensional shape of the mirror surface and three-dimensional coordinates of a real point and a virtual point of a calibration plate are reconstructed. And calculating the reconstructed data points to obtain a reflection transformation matrix of the mirror surface and the prism pair, and reflecting the virtual surface to a corresponding real position based on the matrix to obtain the panoramic contour of the tested sample in the initial and deformation states. And synchronous high-definition images of samples at different field depths can be obtained, and dynamic high-precision three-dimensional deformation and contour measurement of object parts in different field depth ranges can be realized.

The invention belongs to the technical field of laser, and particularly discloses a beam shaping system and method based on prism pair orthogonality and cascade, and the system comprises a single-mode fiber, an aspherical lens, a first prism pair, a first parallel plate, a second prism pair and a second parallel plate which are sequentially arranged along the direction of an optical axis. A Gaussian beam emitted by a single-mode optical fiber is collimated by an aspherical lens to form a parallel beam, the beam is expanded or compressed in the X direction by a first prism pair, the beam is expanded in the Y direction by a second prism pair, and two inclined parallel plates are respectively used for compensating the beam offset in the X / Y direction; according to the invention, the circular Gaussian beam emitted by the single-mode fiber can be shaped, a large strip-shaped collimation light spot with an adjustable length-width ratio from 4: 1 to 20: 1 and a long axis size of 30mm can be realized, and the central positions of the input and output beams in the cross section are ensured to be unchanged.

The present disclosure relates to an optical system for a sample processing instrument including a flow cell with a detection channel for passage and detection of a sample. The optical system includes: a laser source; a collimating device configured to collimate beam emitted from the laser source; a focusing lens configured to focus the light beam from the laser source within the detection channel; and a reshaping device disposed between the collimating device and the focusing lens and configured to reshape spot of the collimated light beam. The reshaping device includes a first prism pair including two prisms being adjustable relative to each other so that the beam of the laser source has a predetermined size in a first direction. A sample processing instrument including the above optical system and flow cell is further provided therein.

The invention provides a method and a system for accurately positioning a first beam section of a segmental beam by a short line matching method, which are used for optimizing a pier-side bracket opposite-pulling deformed steel bar tensioning construction process, enhancing the stability of a bracket and improving the mounting precision and the construction efficiency of the first beam section; before the first beam section is adjusted, the bracket is pre-pressed, and the influence of non-elastic deformation of the bracket on the positioning accuracy of the first beam section is eliminated; by controlling the axis deviation and flatness of the middle supporting legs, the influence of unbalance loading generated by the kiloton bridge girder erection machine on the line shape of the first beam section is avoided; the centering rod of the prism is regularly self-checked and corrected, so that measurement errors caused by inclination of the centering rod are eliminated; elevation control encryption adopts a zenith distance method, so that the precision is high, and linear control of segmental beam erection is facilitated; before a front auxiliary supporting leg of the bridge girder erection machine is in place and after a pier top block is hoisted, multi-measurement-back displacement monitoring is carried out on a pier body, and the accuracy of a line shape under the working condition is guaranteed. According to the method, the influence of each factor on the positioning precision of the first beam section is eliminated, so that the positioning precision of the first beam section is controlled within a standard allowable range.

The invention relates to a visual and optical feedback combined optical element rapid alignment method and device, and the method comprises the steps: plane mirror alignment and beam splitter prism alignment, the plane mirror alignment establishes a reference optical axis for beam splitter prism alignment, and visual feedback coarse alignment and optical feedback fine alignment are successively adopted in the two stages. During visual feedback coarse alignment, the inclination angle of the plane mirror or the beam splitter prism is calculated and adjusted according to the coordinates of light spots on the imaging screen, so that the light spots return to the target center or coincide with the target center; during optical feedback fine alignment, spiral gradient rising is adopted to search and adjust the inclination angle of the beam splitter prism, so that the reflected light intensity is maximum. The alignment device comprises a clamp which is used for fixing a gradient refractive index lens and is provided with an imaging screen in the direction of a light emitting surface, a side surface imaging device, a first rotating platform fixed with a plane mirror, a second rotating platform for clamping a beam splitter prism and the like. By utilizing the method and the device, the alignment precision and the alignment efficiency of the gradient refractive index lens, the beam splitter prism and other optical elements can be improved.

The utility model relates to the field of mobile phone camera modules, and discloses a miniaturized periscope lens module, which comprises a prism, a focusing part, a lens and a sensor part, the prism is U-shaped, the sensor part and the focusing part are respectively arranged at two ends of the prism and are positioned on the same side of the prism, the lens is arranged on the focusing part, the prism is provided with four reflecting surfaces, and the reflecting surfaces are arranged on the prism. Light enters from the lens and then enters the sensor part through four times of reflection. The periscope lens module is small in thickness and can be applied to a mobile phone.

The present invention relates to a Raman light state-selective interferometer device for an atomic interference gyroscope. A polarization beam splitter prism is used to spatially split the Raman interference light, so that the two Raman interference light beams share a Raman interference collimator, thereby reducing the number of collimators. A triangular reflecting prism is used to allow the Raman state-selected light and the Raman interference light to share a polarization beam splitter prism, resulting in a compact structure and space-saving, which can effectively reduce the size of the atomic interference gyroscope device. A large flat reflector with a good surface shape is used to replace a traditional plurality of independent reflectors, thereby solving the problem that the atomic interference gyroscope has a high requirement for the parallelism of the effective wave vectors between the two Raman light beams, which makes the assembly and adjustment difficult.

The utility model discloses a beam splitter prism gluing device which comprises a supporting frame, a mounting frame is rotatably connected to the interior of the supporting frame, adjusting assemblies are symmetrically and rotatably connected to the interior of the mounting frame, a first gluing clamp and a second gluing clamp are movably connected to the symmetrically-arranged adjusting assemblies, and the second gluing clamp is located above the first gluing clamp. The first gluing clamp and the second gluing clamp are symmetrically arranged, the driving assembly is arranged in the mounting frame, the two ends of the driving assembly are movably connected with the outer walls of the bottom ends of the adjusting assemblies correspondingly, and the number of the fixing clamps is two. According to the scheme, the mounting frame is matched with the first gluing clamp, the second gluing clamp and the adjusting and fixing clamp mounted on the gluing clamps to clamp the prisms, the driving assembly is started to be matched with the adjusting assembly, and the first gluing clamp and the second gluing clamp can be adjusted to move oppositely so that the two prisms can be aligned and spliced; therefore, the processing precision of the beam splitter prism can be improved, and the production quality of the beam splitter prism is enhanced.

The invention discloses a tab detection system and method, and the system comprises at least one tab outer side detection station which is used for controlling an outer side prism to move according to the outer side displacement, so as to carry out the imaging of the outer side of a tab through the outer side prism, collect the image in the outer side prism, obtain the image of the outer side of the tab, and send the image to the outer side detection station; the tab outer side image is used for determining a tab outer side detection result, and the outer side displacement is the displacement of an outer side prism in the width direction determined based on tab outer side actual coordinates and tab outer side reference coordinates; the at least one tab inner side detection station is used for controlling the inner side prism to move according to the inner side displacement, so that the inner side of the tab is imaged through the inner side prism, an image in the inner side prism is collected, a tab inner side image is obtained, and the tab inner side image is used for determining a tab inner side detection result. The inner side displacement is the displacement of the inner side prism in the width direction determined based on the inner side actual coordinate of the tab and the inner side reference coordinate of the tab. Therefore, the appearance defects of the tabs can be detected.

The invention discloses a preparation method and device of an optical element, a readable storage medium and an imaging module, and relates to the technical field of optics. The preparation method of the optical element comprises the following steps: acquiring a first prism and a second prism, and determining a combined contact surface on the first prism; carrying out region division treatment on the combined contact surface to determine a film coating region in the combined contact surface; performing etching treatment on the film coating area so as to process the first prism into a third prism; performing thin film deposition treatment on the etched film coating area so as to process the third prism into a fourth prism; and combining the second prism on the combination contact surface of the fourth prism to obtain the optical element. The optical characteristics of the optical element are improved.

The present invention relates to the technical field of microscopes, and in particular to a solid microscope comprising an eyepiece, an interpupillary distance adjustment component, an optical hinge group, a prism steering group, a distributed reflective optical path component, and a continuously variable magnification objective lens group; the distributed reflective optical path component comprises a negative lens group, a positive lens, a negative lens, and a positive lens group; the negative lens group is arranged between the prism steering group and the continuously variable magnification objective lens group, the positive lens is arranged between the optical hinge group and the prism steering group, and both the negative lens and the positive lens group are arranged between right-angle prisms in the optical hinge group; by sequentially arranging the negative lens group, the positive lens, the negative lens, and the positive lens group between various components of the solid microscope, thereby combining the mechanical structure spatial layout, adjusting the light beam aperture, reducing the interception of the light beam by the prism, and reducing off-axis vignetting, thereby solving the technical problem in the prior art that the solid microscope has large off-axis vignetting and poor imaging quality due to the light path passing through multiple prism groups, and meeting the overall imaging requirements.

The invention provides a calibration device and method for an ultraviolet wavemeter, and relates to the technical field of atomic filtering, and the calibration device comprises the steps: a tunable continuous laser generates narrow-linewidth continuous laser; the first non-polarization beam splitting prism performs beam splitting on the narrow-linewidth continuous laser to obtain first laser and second laser; the wavelength meter obtains a measurement wavelength value of the first laser; the second non-polarization beam splitting prism performs equal-proportion beam splitting on the second laser to obtain third laser and fourth laser; the first photoelectric detector obtains the first signal intensity of the third laser; the atomic light filter absorbs energy at the central wavelength of the fourth laser by using alkali metal barium steam in a metastable state and outputs fifth laser; the second photoelectric detector obtains the second signal intensity of the fifth laser; and the control system scans a preset wave band, records a plurality of preset wavelength values and ratios between the plurality of corresponding second signal intensities and the plurality of first signal intensities to obtain a transmittance curve, and calibrates the wavemeter according to the absorption peak position of the transmittance curve.

Embodiments of the present application provide a display panel. The display panel comprises a light emitting device arranged on a silicon-based circuit substrate, the light emitting device comprising a first light emitting device, a second light emitting device and a third light emitting device, and a prism group comprising at least a first direction-changing prism, a second direction-changing prism and a converging prism. Different prisms are arranged on light emitting devices of different colors, and the first direction-changing prism and the second direction-changing prism reflect the light emitted by the corresponding light emitting devices to the converging prism to form display light. In the embodiments of the present application, by arranging the prism group, the light is affected by different prisms in the prism group, and then the light in different pixel areas is collected on the light emitting surface of the prism group corresponding to the same light emitting device, and then emitted, thereby effectively improving the concentration of light at the center of light emission, reducing the dispersion of the panel, and improving the display effect of the device.

The invention belongs to the field of laser radar systems, and discloses a three-dimensional imaging single-photon laser radar system based on multi-beam eye-like scanning, which is composed of a laser, a DOE, a perforated reflector, a Risley scanning prism, a telescope, a detector array, a time-to-digital converter and a two-dimensional holder. The laser generates a detection light beam, the detection light beam passes through the DOE to generate a two-dimensional light beam array, the light beam array passes through a small hole in the center of the perforated reflector, a view field range is scanned through the Risley prism, and a scanning path is an eye-like pattern; echo signals enter along the same optical axis through the Risley prism, are reflected to the telescope through the perforated reflector and are converged to the detector array through the telescope, and photosensitive surfaces of the detector array correspond to view fields of the detection light beam array one to one.

A light emitting module includes a semiconductor laser, a collimating lens for that collimates light beam output from the semiconductor laser, a prism pair including two substantially triangular-plate-shaped prisms, each passing the light beam between two end surfaces on both sides of one apex angle to refract the light beam, and the prisms being sequentially arranged on an optical path of the light beam in such a manner that the orientations of apex angles of the prisms are opposite to each other, and a rotary stage configured to hold the prism pair and to be rotatable about a rotation axis C extending in a prism thickness direction in such a manner that an incident angle of the light beam entering the prism positioned on the upstream side of the optical path is changed.

The utility model discloses a batch detection jig for cavity surfaces of edge-emitting lasers. The batch detection jig comprises a support frame; the at least three reflectors are sequentially embedded in the supporting frame, so that the parallel incident light is emitted upwards after the angle is changed; and the at least three fixing devices are fixed on the support frame, are in one-to-one correspondence with the reflectors, and are used for fixing an edge-emitting laser and enabling reflected light of a cavity surface of the edge-emitting laser to penetrate through the reflectors to be emitted upwards. According to the utility model, the reflecting prism can be utilized to carry out appearance detection on the cavity surface of the edge-emitting laser in the loading tray. Pollution or damage risks caused in the process that the laser needs to be taken and placed in a traditional detection mode are overcome, and efficiency is improved.

The utility model discloses a transformer partial discharge monitoring devices based on arc spectrum analysis has energy quartz optical fiber, and one end of energy quartz optical fiber is sleeved with quartz sleeve, and the end of quartz sleeve is provided with focusing lens, and the other end of energy quartz optical fiber is connected with optical fiber flange through ceramic plug core, and the emergent light path of optical fiber flange is sequentially and interval provided with convex lens, visible light split prism and ultraviolet light split prism, and visible light split prism produces reflection to the visible light of 450~780nm wavelength, and ultraviolet light split prism produces reflection to the ultraviolet light of less than 280nm wavelength, and the reflection light path of visible light split prism is provided with silicon light detector, and the reflection light path of ultraviolet light split prism is provided with first ultraviolet light detector, and the transmission light path is provided with second ultraviolet light detector, and silicon light detector, first ultraviolet light detector and second ultraviolet light detector all are electrically connected with MCU through data acquisition card.

The embodiment of the invention provides a display panel. The display panel comprises light-emitting devices arranged on a silicon-based circuit substrate, the light-emitting devices comprise a first light-emitting device, a second light-emitting device and a third light-emitting device, and a prism group at least comprises a first turning prism, a second turning prism and a polymerization prism. The different prisms are correspondingly arranged on the light-emitting devices of different colors, and the first turning prism and the second turning prism reflect emergent light of the corresponding light-emitting devices to the polymerization prism to form display light after the emergent light is emitted out. According to the embodiment of the invention, the prism group is arranged, different prisms in the prism group act on the light rays, and then the light rays in different pixel areas are converged to the light-emitting surface of the prism group corresponding to the same light-emitting device and then are emitted, so that the concentration ratio of the light rays at the light-emitting center is effectively improved, the dispersion of the panel is reduced, and the light-emitting efficiency is improved. And the display effect of the device is improved.

The utility model discloses wafer defect optical detection equipment which comprises a laser light source used for emitting an initial light beam with a fixed wavelength, and the initial light beam is emitted along a first path; the compression prism array comprises at least one compression prism pair, and the compression prism pair comprises a first refracting surface and a second refracting surface which form an included angle between surfaces; the bearing device is used for bearing the wafer; a receiving device; wherein the initial light beam reaches the first refracting surface at a vertical angle, reaches the second refracting surface by taking an inter-surface included angle as an incident angle, is refracted, changes a propagation path towards the direction of the second refracting surface, and enters a receiving device after being reflected by the wafer. According to the wafer defect optical detection equipment provided by the embodiment of the invention, the initial light beam reaches the first refracting surface without changing the diameter of the light spot, reaches the second refracting surface, is refracted and changes the propagation path towards the direction of the second refracting surface at the same time, so that the single-dimensional compression of the diameter of the light spot is realized, and then the light spot enters the wafer and is reflected into the receiving device; and completing defect detection.

The present invention discloses a high extinction ratio optical rotator, which sequentially includes a collimator, a polarization beam splitting prism pair, a non-reciprocal 45-degree polarization rotator, and a mirror along the optical path direction; the polarization beam splitting prism pair is composed of a first birefringent crystal wedge plate and a second birefringent crystal wedge plate with mutually perpendicular optical axis directions. The optical axis of the first birefringent crystal wedge plate is parallel to the vertical plane, and the optical axis of the second birefringent crystal wedge plate is perpendicular to the vertical plane; the polarization beam splitting prism pair separates two orthogonal polarization components of the input signal light. After passing through the polarization beam splitting prism pair, the signal light is divided into vertically polarized light and horizontally polarized light with orthogonal polarization states, and the intersection point of the vertically polarized light and the horizontally polarized light is located on the surface of the mirror. By setting the polarization beam splitting prism pair, the present invention eliminates the deviation of the polarization rotation angle of the polarization rotator caused by factors such as temperature, wavelength, and processing tolerance, ensuring that the signal light passing through the optical rotator can obtain a high extinction ratio.

A light control device having a first 1924 and second surfaces 1920. The first surface comprises an array of first prisms 1921 arranged to provide a first refractive turn of a portion of received disp

The application discloses a precision surface three-dimensional appearance measurement device and method based on phase shift digital holography, which comprises the following modules: a light beam splitting module for generating a reference light and an object light beam irradiated to the surface of a measured object and returned; a reference light beam adjusting module for receiving the reference light generated by the light beam splitting module, generating different reference light beams based on different voltage forces, and generating different reference light beams after different brightening and increasing; a lens imaging system for receiving the object light beam generated by the light beam splitting module and performing light beam amplification; a second polarization beam splitter for receiving the different reference light beams generated by the reference light beam adjusting module and the amplified object light beam of the lens imaging system, and performing light beam combination; a linear polaroid for respectively interfering a series of light beams after combination; an image acquisition module for acquiring a series of interference images; and a computer for receiving the series of interference images transmitted by the image acquisition module, extracting phase information of the object light by using a phase shift algorithm, and realizing measurement of the three-dimensional appearance of the surface of the measured object.

The intelligent door lock face recognition lens comprises a supporting plate, a rotating seat, a lens assembly and a sliding plate, the rotating seat is rotatably installed on a supporting frame, the sliding plate is vertically connected with the supporting plate in a sliding mode, the lens assembly is installed on the rotating seat, and the lens assembly is connected with the sliding plate in a sliding mode. A first prism, a second prism and a third prism are fixedly installed on the supporting plate, light emitted by the lens assembly penetrates through the first prism and then is refracted upwards, the irradiation direction of the light emitted by the lens assembly penetrates through the second prism and then is kept unchanged, and the light emitted by the lens assembly penetrates through the third prism and then is refracted downwards. The intelligent door lock has the advantages that the first prism, the second prism and the third prism are switched to refract light by adjusting the pitching angles of the rotating base and the lens assembly on the supporting plate, images of the position height are collected on the fixed intelligent door lock, and the intelligent door lock can adapt to users of different heights.

The present application relates to the technical field of foundation pit measurement, and more particularly to a construction coordinate transfer method and coordinate measurement transfer system suitable for deep foundation pit; the construction coordinate transfer method comprises the following steps: preparing step: adjusting the center of the prism to be physically collinear with the steel wire rope; obtaining the coordinates of the reflecting sheet: taking the coordinates of the center of the prism in the construction coordinate system as the coordinates of the reflecting sheet on the steel wire rope corresponding to the prism in the construction coordinate system; obtaining the coordinates of the site at the bottom of the foundation pit: combining the coordinates of the reflecting sheet in the construction coordinate system, the coordinates of the site in the construction coordinate system are obtained according to the resection method, that is, the transfer of the construction coordinate from the ground to the bottom of the foundation pit is completed; without purchasing expensive special equipment such as laser plumb instrument, the construction cost is reduced, the space occupied by the support is small, the support does not need to be removed during layer-by-layer excavation, the construction process is reduced, the coordinate transfer process is relatively simple, and the precision is high.

The application discloses a wide-narrow-slit combined partitioned constant star optical radiation characteristic simulation system, which is used for simulating the optical radiation characteristic of a star. The system is composed of a continuous laser light source, a multi-element partitioned mapping spectrum modulation system, a multi-channel integrating sphere coupling system, a multi-output optical fiber group, an optical fiber spectrometer monitoring system and a data processing and control system. The multi-element partitioned mapping spectrum modulation system comprises a pre-collimation and expansion system and multi-size slits. The pre-collimation and expansion system expands the light beam to fill the DMD array surface, and the wide-narrow-slit combination improves the energy and spectrum modulation capacity and compensates for the modulation interference. The double-prism symmetrically placed light splitting system ensures that the light beam is parallelly incident and output. The DMD array surface is divided into p independent sub-regions for independent modulation, each sub-region corresponds to a group of wide-narrow-slit channels, the independent modulation of the star point color temperature and the star magnitude is realized, and the sub-region modulation capacity satisfies the formula n >= t / c. The multi-channel integrating sphere coupling system realizes light mixing and independent output, and the system has high precision and strong flexibility.

The present application relates to a kind of light beam pointing stability large rotation angle tuning short wave infrared coherent light source, and the present coherent light source includes: pump laser, magneto-optical isolator, condensing lens group, two 45 ° reflector, optical parametric oscillator (OPO), optical filter, fixed right-angle prism and mobile right-angle prism.The pump laser is used to generate pump light;The magneto-optical isolator is used to ensure one-way transmission of laser;The condensing lens group is used to improve beam energy density;Two 45 ° reflector is used to fold pump light path;The optical parametric oscillator is used to generate coherent short wave infrared light;The nonlinear crystal is used to adjust the output wavelength of short wave infrared light source;The optical filter is used to block remaining pump light;Fixed right-angle prism and displacement right-angle prism are used to compensate the lateral displacement of output beam caused in the process of crystal rotation.The present application compensates the lateral displacement of light beam by moving prism, realizes the position of output beam unchanged in the process of large rotation angle tuning, ensures its directionality stability, and is suitable for spectral analysis, remote sensing and imaging and other needs.