149 results about "Autocollimator" patented technology

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 discloses a large-range high-precision angle measurement precision detection device and method for a two-dimensional scanning mechanism. The detection device comprises a two-dimensional scanning mechanism, a multi-tooth indexing table, a photoelectric autocollimator, a marble platform, an angle acquisition circuit, a motion control box, a screw flat plate, a horizontal adjusting gasket, a photoelectric autocollimator mounting tool, an angle acquisition computer, a ground detector and the like. The multi-tooth indexing table is placed on the marble platform plane; the photoelectric autocollimator is mounted on the multi-tooth indexing table through the photoelectric autocollimator mounting tool; a horizontal adjusting gasket is used for adjusting the multi-tooth indexing table and the two-dimensional scanning mechanism to be consistent in parallelism; it is ensured that the photoelectric autocollimator can receive the specular reflection value of the two-dimensional pointing mechanism. The detection method comprises static calibration and dynamic calibration, wherein the static calibration comprises large-period angle precision calibration and small-period angle precision calibration measurement. The invention provides a third-party angle measuring device and a third-party angle measuring method. The third-party angle measuring device can be unfolded around measured equipment and can reach within one arc second.

A shafting rotation precision measuring device and method are suitable for shafting rotation precision measurement of a shaft end assembly, the shafting rotation precision measuring device comprises a lens reflection tool and a rotation precision measuring device from the function aspect, and the readings of a single-shaft photoelectric autocollimator in the horizontal direction and the vertical direction are expanded into Fourier series respectively; first harmonic function calculation is carried out on Fourier series based on a gradienter method, two rectangular coordinates can be obtained, the two components are synthesized, the shaft system rotation precision can be obtained, and the device is simple in structure, convenient to operate and wide in application range. The test verifies and proves that the detection requirement on the rotation precision of the shaft system can be met, and the method has practical engineering significance.

The invention belongs to the technical field of optical precision control, and particularly relates to an automatic calibration system and method for a fast steering mirror sensor, and the calibration method comprises the following steps: S1, carrying out the initialization configuration; s2, generating and sending an instruction sequence; s3, data storage: storing the angle data, fed back by the autocollimator, of the fast steering mirror; s4, dynamic calibration parameters are generated through data segmentation and data fitting; S5, calibration output is carried out; and S6, performing real-time compensation. The calibration system comprises an autocollimator, an upper computer and a fast reflecting mirror controller, a step angle instruction is automatically generated and sent through the upper computer, feedback data of the autocollimator is collected in real time, and first-order or second-order fitting is selected based on data segmentation and model selection to generate dynamic calibration parameters, so that the calibration accuracy of the fast reflecting mirror is improved. Global fitting is replaced by multi-interval independent linear fitting, the characteristic that nonlinearity of the sensor changes along with the angle is adapted, and the compensation precision is improved.

The invention provides a spherical prism optical axis deflection angle detection device which is provided with a base and a supporting structure and comprises a transmission-type coaxial eccentric detection light path and a transmission-type non-coaxial eccentric detection light path. Wherein the transmission-type coaxial eccentric detection light path comprises a collimator, an objective table and a photoelectric centering instrument; the transmission-type non-coaxial eccentric detection light path comprises a photoelectric autocollimator, an objective table and a photoelectric centering instrument; and the two detection light paths share the objective table and the photoelectric centering instrument. The invention also provides a spherical prism optical axis deflection angle detection method, which comprises the following steps of: firstly, selecting a detection light path, then calibrating and calibrating the detection light path, and finally finishing the detection work by using the selected detection light path. The system is designed to be a double-light-path detection system, and detection of the deflection angle of the optical axis of the spherical prism is achieved.

The invention relates to the technical field of photoetching equipment, in particular to a light offset module, a calibration device and a calibration method.The light offset module comprises an integrated tool, an offset mirror and a first diaphragm; the first end of the integrated tool is provided with a first mounting groove, and the second end is provided with a second mounting groove; the offset mirror is embedded in the first mounting groove, and the first diaphragm is arranged in the second mounting groove; a channel extending along the axis of the first diaphragm is arranged in the integrated tool, light emitted by an autocollimator included in the calibration device sequentially passes through the first diaphragm, the channel and the offset mirror, and the offset mirror enables the light to be reflected to the autocollimator in the preset direction. The device is compact in structure, can accurately compensate and calibrate the offset of the light beam in the light path, facilitates accurate and efficient adjustment, and guarantees the quality and reliability of the light beam output by the light source.

The application provides a high-precision autocollimator based on the Tyman Green interference principle and an angle measuring method, aiming at solving the problem that the prior art cannot continue to break through the existing angle measuring precision due to the limitation of geometric optical principle and the influence of environmental factors. The autocollimator comprises a laser, a filtering collimation module, a beam splitter, a reference mirror, a plane mirror, a detector and a data acquisition and processing computer. After the autocollimator is leveled, the plane mirror is placed on a turntable to be measured, and the measurement is carried out when the turntable has no rotation angle and has a rotation angle, so that the laser is emitted to the filtering collimation module to be emitted as monochromatic parallel light to the beam splitter and is divided into two paths. One path is reflected by the plane mirror and then passes through the beam splitter to reach the detector again. The other path is reflected by the reference mirror and then reflected by the beam splitter to reach the detector again. The two beams interfere on the target surface of the detector, the detector records the interference image and uploads it to the computer to calculate the interference fringe offset, so that the angle measurement is completed.

The invention discloses a method for installing and adjusting a double-reading-head photoelectric encoder on a gyro accelerometer, which comprises the following steps of: initially installing a coded disc base and an optical component, measuring the size, adjusting a grating gap, reinstalling the optical component, installing the coded disc component, testing a signal, fastening the optical component and the coded disc component, installing a receiving plate and arranging a wire harness. The oscilloscope is used for observing sine and cosine signals and a zero position, the industrial personal computer is used for reading an angle value given by the signal processing and output circuit, the installation accuracy of the double-reading-head photoelectric encoder is judged, and the purpose that the double-reading-head photoelectric encoder is installed on the gyro accelerometer in a high-precision mode is achieved. The problem of high-precision installation of the double-reading-head photoelectric encoder in the limited space of the gyro accelerometer is solved, the installation and adjustment operation is simpler and more efficient, particularly, high-precision optical methods such as a multi-face prism and an autocollimator are not needed, and the method is more suitable for completing installation and adjustment or maintenance in off-line scenes such as a user site.

The invention discloses an intelligent assembling method of a glass reference mirror, which utilizes an intelligent mechanical arm to complete the assembling of the glass reference mirror, utilizes a set of six-degree-of-freedom intelligent mechanical arm to complete the accurate position control of the glass reference mirror, and utilizes two sets of double-shaft photoelectric autocollimators to measure the orientation of the reference mirror. The position of the mechanical arm is adjusted through a central control closed-loop algorithm, and the glued surface of the reference mirror is aligned with the reference mirror mounting surface of the inertial attitude sensor, so that the reading of a reference collimator is the lowest, namely the precision is the highest, and the actual measurement precision can be within 15 seconds of arc. Meanwhile, by using the system, the thickness of the epoxy adhesive layer can be controlled through a known reference surface, and the temperature cycle of-35 DEG C to 70 DEG C can be resisted when the thickness of the adhesive film is 0.20 mm to 0.60 mm through test verification.

The application belongs to the technical field of double-head photoelectric autocollimator equipment, and particularly relates to a double-head photoelectric autocollimator, which comprises a photoelectric autocollimator body, object lens barrels are arranged on the two sides of the photoelectric autocollimator body, lenses are arranged in the object lens barrels, a sealing cover is hingedly arranged on one side of the object lens barrel, a mounting groove is formed in one side of the sealing cover, a through hole is formed in the middle of the outer wall of the sealing cover, a pressing rod is movably connected in the through hole, a limiting sliding block is arranged on the inner side of the through hole, an arc rotary sliding groove is slidably connected with the limiting sliding block on the outer wall of the pressing rod, a first mounting plate is fixed to one end of the pressing rod extending into the mounting groove, a plurality of telescopic rods are fixed to one side of the first mounting plate, and the same second mounting plate is fixed to the other ends of the plurality of telescopic rods; the application can clean dust on the lenses, has good cleaning effect, avoids the influence of dust on the accuracy of instrument measurement, and can well protect the lenses.

The application discloses a multi-source data compensation method for positioning precision of a motion unit of a complex micro-component ultra-precision controlled-shape machining system, relates to the technical field of complex micro-component ultra-precision controlled-shape machining, and is proposed to meet the requirement of high-precision creation of surface characteristic structures of a thin-wall spherical shell micro-component under the constraint of a narrow space. Technical points: a linear motion unit is controlled by a numerical control system program to reciprocate several times in a constant increment form in a full stroke and a working area, respectively; the position of the linear motion unit in the motion process is collected by a high-frequency laser interferometer; and multi-source error data in the whole area and the region are obtained through data processing. Based on the multi-source data compensation method, a multi-source data error compensation table is established, compensation is carried out through a numerical control program, and the positioning precision of the linear motion unit is calibrated. For a rotary motion unit, an autocollimator is used to calibrate the error, and further compensation is carried out in the program through the error table by an error synthesis method, so that the calibration and compensation of the positioning precision of each motion unit of the complex micro-component ultra-precision controlled-shape machining system are completed, and high-precision equipment support is provided for micro-structure high-precision creation.

The application provides a high-precision auxiliary alignment device and an alignment method for an optoelectronic autocollimator, and aims at solving the problem of low aiming accuracy in the existing laser coarse aiming auxiliary alignment method. The auxiliary alignment device comprises a rhombic prism, a corner cube mirror, a laser, a first light splitting prism and a second light splitting prism. The auxiliary alignment method is as follows: the translational position alignment of the optoelectronic autocollimator to be aligned to the aiming target is realized; the collimated light is divided into first reflected light and first transmitted light; the first reflected light is reflected by the corner cube mirror and then returns to the rhombic prism to form a reference image point; the first transmitted light is transmitted by the first light splitting prism to the surface of the aiming target, is reflected by the surface of the aiming target, and then is reflected by the second light splitting prism, and finally is reflected by the rhombic prism to form a measurement image point. The azimuth angle of the optoelectronic autocollimator to be aligned is adjusted until the measurement image point coincides with the reference image point, and the alignment is completed.

The invention relates to the technical field of optics, and discloses an autocollimator calibration method and system so as to ensure the detection precision. The method comprises the following steps: deploying an auxiliary calibration structure on a peripheral emergent collimated light beam of the autocollimator; the auxiliary calibration structure comprises two reflecting surfaces which are integrally formed and are not perpendicular to each other, an included angle between the two reflecting surfaces is a known standard included angle, and the standard included angle is covered by light spots of collimated light beams emitted from the periphery of the autocollimator to form an upper sub-light beam and a lower sub-light beam of an angular bisector; the control host acquires images of light beams generated by the light source, which are respectively reflected by the two reflecting surfaces of the auxiliary calibration structure and then imaged on the photoelectric sensor, and counts the number of pixels between central points of two cross curves in the acquired images; then, the deflection angle corresponding to the unit pixel is calibrated according to the known standard included angle of the auxiliary calibration structure and the counted pixel number, and finally, the angle change of the measured object is tracked according to the deflection angle corresponding to the unit pixel and the change of the pixel number.

The present invention discloses a system for testing the transmission return accuracy of a drive mechanism for lunar soil and water ice detection, comprising a turntable, a fixing frame, a support seat, a reflector assembly, an autocollimator, a multi-dimensional adjustment table, a base plate, and a drive mechanism. The drive mechanism is mounted on the turntable via the support seat and the fixing frame, and the relative positions of the autocollimator and the reflector assembly are adjusted so that the optical axis of the autocollimator is perpendicular to the reflector. During testing, the turntable is rotated in the reverse direction to compensate for the angle of rotation of the drive mechanism in the forward direction, so that the reflected image of the autocollimator is always within the test field of view, thereby achieving the transmission return accuracy test of the drive mechanism. The system has a simple structure and convenient and effective testing, and can be used for the transmission return accuracy test of the drive mechanism for water ice detection in lunar soil water molecule analyzers.

A method for aligning two surveying instruments in a common space in a process that uses an autocollimation of a collimated light beam transmitted by a first surveying instrument and reflected by a second surveying instrument. In the alignment process, the first surveying instrument may emit a collimated light beam towards the second the surveying instrument and receive a reflection of the collimated light beam from the second surveying instrument in an autocollimator. The reflection may be generated for example by a mirror at the second surveying instrument. When the light beam is reflected such that autocollimation of the collimated light beam is achieved at the first surveying instrument, the first and second surveying instruments are in a predetermined positional relation with respect to one another. With a known predetermined positional relation between the reflecting mirror and the line of sight of the second surveying instrument, measurements by both surveying instruments can be made in a common coordinate system.

The application discloses a kind of optical lens centering positioning device and method based on multi-focus ring zone lens, the device is by autocollimator, multi-focus ring zone lens, precision five-dimensional adjusting frame, lens group to be measured, mirror seat, leveling centering device, air bearing, displacement sensor, marble frame, image display system, centering positioning measurement analysis system composition, mirror seat is installed on the centering leveling device of air bearing, and through displacement sensor to the center axis of mirror seat and the center axis of air bearing coincide, the spherical center of lens upper surface is located in the focal point of multi-focus ring zone lens, without adjusting the position of multi-focus ring zone lens, the high-precision lens can be quickly centered, and the assembling and adjusting time of lens is greatly reduced;The edge spread function of cross differentiation silk is analyzed by image processing and display system, so as to calculate the axial assembly error of lens, the application solves the problems of low optical lens centering positioning precision and low assembly efficiency.

The present application relates to the field of optical machine adjustment, and particularly relates to a kind of single-photon laser ranging system's visual axis collimator adjustment method, first 45 ° reflector and second 45 ° reflector are sequentially adjusted to the preset position on tooling bottom plate, and the normal relationship of one face of first 45 ° reflector, second 45 ° reflector and high-precision autocollimator is calibrated;Single-photon laser emission end and single-photon laser receiving end are respectively adjusted to the preset position on the ranging system bottom plate, the normal relationship of reference surface of single-photon laser emission end and single-photon laser receiving end and high-precision autocollimator is calibrated, and the normal relationship of the other face of first 45 ° reflector, second 45 ° reflector and high-precision autocollimator is calibrated.The optical machine adjustment method can reach the adjustment accuracy requirement of single-photon laser ranging system.

The invention discloses a calibration device and method for calibrating the parallelism of a measuring surface of a large outside micrometer. The device comprises a mechanical adjustment module, an optical imaging module and an image processing and calculating module, the mechanical adjusting module is used for adjusting the position of the micrometer; the optical imaging module comprises an autocollimator and a double-turning prism system, a high-resolution area array detector is arranged in the autocollimator, the double-turning prism system divides a single-path collimated light beam emitted by the autocollimator into two paths, the two paths of collimated light beams are respectively projected to two measuring surfaces of a micrometer and receive reflected light of the two paths of collimated light beams, and two independent cross images are formed on the detector; the image processing and calculating module displays a view field containing two cross images in real time, sets one image as a reference zero position, calculates the angle deviation of the other image relative to the reference zero position in the X direction and the Y direction, and converts the angle deviation into a linear parallelism deviation value. The method can realize non-contact, automatic and visual calibration in the whole process, and has the characteristics of high precision, high efficiency and high repeatability.

The present application relates to a kind of control system index evaluation method based on external fine measurement mode, first based on analog star body builds external fine measurement system, provides control system index evaluation system environment.The angle between the two pointing target angles before and after the theodolite calibration analog star body maneuver is recorded The total time of maneuver, verify attitude control maneuver speed index.Using autocollimator measure the angle change of the initial pointing position of load simulator and the return position after maneuver, calculate the angle difference between the two stable positions before and after maneuver, combined with system error and random error, verify the attitude control precision index of control system.Using dual-frequency laser interferometer and analog star body form stable interference measurement optical path, from the imaging start time to the imaging end time, the stability of the real-time data measured by dual-frequency laser interferometer Angle, verify the attitude control stability index of control system, realize the index evaluation of spacecraft control system through external fine measurement mode, reduce professional requirements, good universality.

This invention proposes a micro-nano arc-scale three-dimensional angle inspection device and method. The device comprises a ribbed worktable, a worktable shaft, a worktable support, a drive unit, a base, a plane mirror, an autocollimator, a drive module circuit board, a main control module circuit board, a display input module circuit board, and a turntable. The method uses the drive unit to induce a three-dimensional angle deflection in the worktable, employs two sets of autocollimation systems to measure this deflection, and establishes closed-loop feedback control for the worktable. Because the two angle measurement devices are orthogonally arranged, the three-dimensional angle deflection of the worktable can be measured. Using an autocollimation system as the angle measurement device greatly improves the angle measurement resolution. The combined drive method of a lead screw and piezoelectric ceramic further enhances the resolution of the worktable angle, thus solving the problems of small-angle inspection instruments being unable to perform three-dimensional angle inspection and having low angle resolution.

This invention belongs to the field of inertial measurement technology, specifically an inertial measurement unit and its linear-angular coupling motion calibration method. It includes constructing a non-contact inertial measurement unit linear-angular motion synchronous measurement system. Through a reference cubic prism, a three-dimensional laser vibrometer, a first dual-axis autocollimator, a second dual-axis autocollimator, and a data acquisition module, an attitude transformation matrix is ​​established from the cubic mirror coordinate system to the inertial measurement unit coordinate system. By synchronously triggering the inertial measurement unit, based on the outputs of a three-axis gyroscope and a three-axis accelerometer, the three-axis acceleration measured by the three-dimensional laser vibrometer in the inertial measurement unit coordinate system, and the three-axis angular velocity of the inertial measurement unit measured by the dual-axis autocollimator, the linear-angular coupling motion of the inertial measurement unit is calibrated. This invention avoids the influence of vibration on the accuracy of the measurement system and solves the problem of difficulty in dynamically tracking and monitoring the actual motion of the inertial measurement unit during vibration.

The application discloses a kind of laser power measuring devices based on light pressure, it is characterized in that, including: windproof cabin, first reflector, second reflector, lightweight double-sided reflector, autocollimator;Double-sided reflector is arranged in windproof cabin, one side surface is laser reflection surface, the other side surface is autocollimator reflection surface, autocollimator is opposite autocollimator reflection surface arrangement, for detecting whether double-sided reflector is stationary stable, first reflector, second reflector are arranged in laser reflection surface side;Windproof cabin is provided with incident window and exit window, first reflector is arranged in the inboard of incident window, second reflector is arranged in the inboard of exit window, the laser to be measured is incident to first reflector via incident window and is reflected to double-sided reflector, after being reflected by double-sided reflector, it is reflected by second reflector, and is emitted by exit window.This application greatly simplifies the traditional high-power laser power measuring device, improves measurement accuracy.

This invention claims protection for a MEMS gyroscope installation error calibration method based on a large-range autocollimator, comprising the following steps: Step 1, designing an autocollimator with an angle measurement range of ±9° using the reflection angle sensitivity modulation mechanism of a non-standard corner cone mirror (HCCCR); Step 2, establishing an evaluation benchmark for three-axis MEMS gyroscope measurement data by orthogonally combining two large-range autocollimators; Step 3, establishing a common data acquisition serial port between the autocollimator camera and the IMU host computer, and achieving dimensional unification and time synchronization between the autocollimator and MEMS gyroscope output readings by integrating the MEMS gyroscope angular rate measurement readings with time; Step 4, calibrating the MEMS gyroscope installation error coefficient using a traditional precision angular rate output turntable and conducting a comparative experiment. The experiment shows that the relative deviation of the IMU output after compensation by the two calibration methods is less than 0.3%.

This invention relates to the field of optical measurement technology, specifically to a device and method for detecting the beam-splitting surface parameters of waveguide sheets. The device includes an autocollimator and a measurement platform. The measurement platform is used to place and realize the translation and rotation of the waveguide sheet under test. The autocollimator is tilted above the measurement platform, with its center line coplanar with the rotation axis of the measurement platform, and its tilt angle relative to the rotation axis of the measurement platform is equal to the characteristic angle of the beam-splitting surface. The autocollimator is used to measure the angular parameters of each beam-splitting surface in the waveguide sheet under test during rotation or translation. In this invention, by placing the waveguide sheet under test on the measurement platform, the angular parameters of each beam-splitting surface of the waveguide sheet under test are measured using the autocollimator during the rotation or movement of the measurement platform. Therefore, this device can achieve non-destructive measurement of each beam-splitting surface of the waveguide sheet under test. This allows for the early rejection of defective products, improving production efficiency and reducing production costs.

The present invention belongs to the field of optical precision control technology, and specifically relates to a system and method for automatically calibrating a fast-reflection mirror sensor. The calibration method includes the following steps: S1, initialization configuration; S2, instruction sequence generation and transmission; S3, data storage: storing the angle data of the fast-reflection mirror fed back by the autocollimator; S4, generating dynamic calibration parameters through data segmentation and data fitting; S5, calibration output; and S6, real-time compensation. The calibration system includes an autocollimator, a host computer, and a fast-reflection mirror controller. The present invention uses the host computer to automatically generate and transmit step angle commands, collects autocollimator feedback data in real time, and generates dynamic calibration parameters by selecting first-order or second-order fitting based on data segmentation and model selection. Multi-interval independent linear fitting replaces global fitting to adapt to the nonlinear characteristics of the sensor that change with angle, thereby improving compensation accuracy.

The invention relates to a two-dimensional code type reticle determination method and a two-dimensional high-precision autocollimator based on a reticle and an image positioning algorithm thereof. The two-dimensional code pattern reticle determination method comprises the following steps: determining a unit type corresponding to each pixel position of a light-transmitting plate pattern according to a plurality of preset candidate light transmittances and a plurality of preset candidate random number generators; the unit types comprise a light-transmitting unit type and a light-proof unit type which are divided in advance; generating a candidate two-dimensional code light-transmitting plate pattern based on the unit type corresponding to each pixel position; determining the pattern of a target two-dimensional code light-transmitting plate based on a light spot displacement error result measured by the autocollimator in a simulation manner; wherein the autocollimator comprises a light-transmitting plate corresponding to the candidate two-dimensional code light-transmitting plate pattern. Therefore, the precision of angle measurement of the autocollimator can be improved.

A Method and a system for aligning the optical components of a fiber- coupled, single molecule detection instrument for detecting protein concentrations in a prepared assay solution consisting of several components, the system comprising a digital autocollimator alignment telescope to thereby measure reference mirror angle and beam divergence, angle, and position, an instrument alignment frame to thereby constrain the instrument optical frame during the alignment procedure, a DeMux sorter focusing jig to thereby focus detector lenses in the DeMux sorter, objective inserts installed in place of objectives during the alignment procedure and multiple backlights and targets to thereby perform the optical element alignments.

The invention provides an infrared camera optical axis and reference prism registration method and device. The method comprises the steps that a visible light camera is installed on an infrared camera; calculating the deviation pixel number # imgabs0 # of the visible light camera relative to the optical axis of the infrared camera; the test light emitted by the autocollimator is imaged in the visible light camera, and the reflected light of the reference prism can be received; adjusting the reflection light path of the reference prism to the center to obtain the deviation pixel number # imgabs1 # of the visible light camera relative to the optical axis of the reference prism; and calculating the deviation pixel number of the infrared camera and the reference prism according to the # imgabs2 # and the # imgabs3 #, calculating the deviation angle of the infrared camera and the reference prism according to the deviation pixel number, and performing registration. According to the invention, the auxiliary visible light camera is introduced, an autocollimator can be directly utilized to carry out registration work of the infrared camera and the reference prism, and accurate calibration of the remote sensing camera on a satellite is facilitated.

The invention discloses a desktop type installation and adjustment platform for an extreme ultraviolet coaxial optical system and a method of the desktop type installation and adjustment platform, and belongs to the field of optical system precision installation and adjustment devices.The installation and adjustment platform comprises a photoelectric auto-collimator, an electric rotary table, an image acquisition module, a light source and a lens set adjustment mechanism, and the optical axis of the photoelectric auto-collimator coincides with the rotating shaft of the electric rotary table; the optical platform is fixed on the base and serves as a reference axis of the adjustment platform, the electric rotary table is fixed on the optical platform, the plane reflector is fixed on the surface of the electric rotary table, the photoelectric auto-collimator is arranged on one side of the plane reflector, and the image acquisition module is arranged between the plane reflector and the photoelectric auto-collimator. The traditional installation and adjustment scheme is limited in applicable optical system and lacks flexibility and integration, but the installation and adjustment platform is an independent system with complete functions, integrates optical path calibration, attitude regulation and control and image analysis units, does not need external auxiliary equipment, can be flexibly arranged according to the relation between the aperture and the object image of the optical system to be installed and adjusted, and is convenient to install and adjust. And rapid adaptive precision adjustment is realized.

The invention discloses an autocollimator center conjugate image elimination system, which belongs to the technical field of center conjugate image elimination, and comprises a CCD (Charge Coupled Device), a beam splitter prism, a collimating lens and a reflecting mirror which are coaxially and sequentially arranged from left to right, and further comprises a light blocking assembly, the light blocking assembly is one or combination of more of a first gamma / 4 wave plate, a first polaroid, a second gamma / 4 wave plate, a second polaroid and a third gamma / 4 wave plate. According to the method, the light blocking assembly is arranged, so that the influence of the central conjugate image on the light spot position is reduced, and the measurement precision is improved.