CN211696075U - High-efficient school target mirror axis uniformity calibrating installation - Google Patents

Abstract

The utility model discloses a high-efficiency calibrating mirror axis consistency checking device. The device comprises a two-dimensional azimuth adjustment stage (4), and a cylinder (3) installed on the adjustment stage, the target mirror (2) to be checked and calibrated is installed inside the cylinder, and the parallel light emitted by the collimator light pipe (1) is filled with The objective lens aperture (11) of the target calibration lens to be inspected, and the CCD (12) inside the calibration lens transmits the collimator star point image to the electronic cross reticle generator (5), and displays it on the LED display (7); The electronic cross reticle generator (5) is respectively connected with the computer terminal control system (6) and the LED display (7). The utility model solves the problems of difficult installation and adjustment, low installation and adjustment efficiency and the like during the axis verification process of the existing target calibration mirror. The utility model can directly adjust the position of the electronic cross reticle through the mouse to check the consistency between the mechanical axis of the target calibration mirror and the optical axis (view axis), and is simple and efficient to assemble and adjust.

Description

A high-efficiency calibration mirror axis consistency verification device

technical field

The utility model relates to the technical field of calibration of the axis of a target calibration mirror, in particular to a high-efficiency calibration device for calibration of the axis of a calibration mirror.

Background technique

The target calibration mirror is an optical instrument used to correct the axis error of the gun barrel. The mechanical axis of the outer circle represents the axis of the gun bore. Because the mechanical axis is invisible, it is usually identified by the optical axis (view axis), then the calibration The consistency of the mechanical axis and the optical axis of the calibration mirror is particularly important. At present, the axis verification of the calibration mirror mainly adopts the method of mechanical adjustment. Place a collimator in front of the calibration mirror, rotate the calibration mirror, and observe the optical cross reticle transmitted through the collimator to the focal plane of the collimator. The image of the cross reticle and the cross reticle at the focal plane are misaligned to adjust the optical cross reticle and the parallel light pipe, so that when the calibration mirror is finally rotated, the optical cross reticle image of the calibration mirror and the cross are divided. The scribing plates are coincident and stable, and it is considered that the calibration of the mechanical axis of the target mirror is consistent with the optical axis. Another method is to directly superimpose the electronic cross reticle after the rear image surface of the telescope of the calibration mirror is connected to the detector, where the center of the electronic cross reticle is consistent with the center of the target surface of the detector, rotate the calibration mirror, and the electronic reticle plate With the rotation, adjust the orientation of the detector up, down, left and right and the orientation of the parallel light pipe, find the center of rotation, move the center of the detector to the center of rotation, and check the consistency between the optical axis and the mechanical axis. These methods have the following problems: 1) The verification device is cumbersome and requires constant observation by the human eye. 2) There are too many mechanical adjustment positions, and the optical reticle or detector needs to be adjusted. Due to the limited internal space of the calibration mirror, it is often necessary to repair the internal parts of the pad, which is difficult to adjust and has low adjustment efficiency. For example, the patent CN 206247944 U and CN 207263028 U are the patents of two target calibration devices previously written, and the patent CN206247944 U target calibration system needs to adjust the internal scribe plate of the system to adjust the consistency of the axis of the system. It is quite difficult and time-consuming, and the patent CN 207263028 U needs to adjust the position of the detector during the verification process, and the position of the detector is continuously confirmed by one top and one pull, and then fixed.

Utility model content

The purpose of this utility model is to provide a high-efficiency calibration device for checking the axis consistency of the target calibration mirror. The calibration mirror is an optical instrument used to correct the axis error of the gun barrel. The mechanical axis of the outer circle represents the axis of the gun barrel. It is not visible, and it is usually identified by the optical axis, so it is particularly important to verify the consistency of the mechanical axis and the optical axis of the calibration mirror. The utility model proposes a high-efficiency calibration device for the alignment of the axis of the target calibration mirror. A collimator is placed in front of the calibration calibration mirror to be calibrated, the calibration calibration mirror to be calibrated is rotated, and a two-dimensional adjustment platform is adjusted to make the parallel light tube star point image When the CCD target surface no longer rotates, the optical axis that defines the mechanical axis is considered to be found, and the optical axis is considered to be consistent with the mechanical axis, and the center of the electronic cross reticle is moved to the star point image position with the mouse and locked. The verification of the mechanical axis and the optical axis is completed. In the verification system, the focal length of the collimator is selected to be 1.2m, the radius of the aperture diaphragm at the focal plane of the collimator is 0.05-0.1mm, the focal length of the telescope objective lens of the calibration mirror is 60mm, and the electrical amplification from the CCD to the liquid crystal display The magnification is 25 times. Since the size of the star point image on the CCD target surface is smaller than the diffraction-limited Airy disk, the size of the star point image dispersion spot is calculated based on the size of the Airy disk, r=1.22λF/D, where λ=0.63μm, the diameter of the objective lens of the calibration lens D=14mm, focal length F=60mm, it can be known by calculation that the size of the star point image of the system is 3.3μm, the radius size on the LCD screen is 0.082mm, and the rotation radius of the system axis in the case of 1 dense position is 1.5mm. When the star image on the display screen does not rotate, the axis accuracy of the system verification is far less than 1 mil. And its adjustment process is quite simple, no need to adjust the internal structural parts of the calibration mirror, just use the mouse to adjust the position of the electronic cross reticle.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

A high-efficiency target calibration mirror axis consistency verification device includes a two-dimensional orientation adjustment table 4 and a cylinder 3 installed on the adjustment table. The target calibration mirror 2 to be checked is installed inside the cylinder, and the parallel light emitted by the collimator The light fills the objective lens aperture 11 of the calibration target lens to be checked, and the CCD12 inside the calibration lens transmits the star point image of the collimator to the electronic cross reticle generator 5 and displays it on the LED display 7; the electronic cross reticle generator 5 are respectively connected with the computer terminal control system 6 and the LED display 7;

The adjustment table is a two-dimensional azimuth adjustment table 4, including the adjustment of pitch and yaw;

The electronic cross reticle generator 5 is used to superimpose and generate an electronic reticle on the basis of the CCD imaging signal, and the reticle can be directly moved and locked by the computer-side control system;

The radius of the aperture diaphragm 9 at the focal plane of the collimator is 0.05-0.1mm, so that it can emit quasi-parallel light;

The light source in front of the aperture diaphragm 9 is an adjustable visible light source, and its light output intensity is adjusted so that the CCD will not be saturated.

Further, the outer circle 13 of the outer cylinder of the calibration mirror and the inner wall of the cylinder 3 on the adjustment stage are in tolerance fit.

The advantages of the present utility model compared with the prior art are:

(1) The installation and adjustment efficiency is high, and the utility model does not need to adjust the internal structure of the target calibration mirror, but only needs to adjust the position of the electronic cross reticle.

(2) The utility model has a simple assembly and adjustment structure, and only needs to be equipped with a parallel light pipe optically.

(3) The system has high installation and adjustment precision, far less than 1 densities.

Description of drawings

Fig. 1 is the schematic diagram of a kind of high-efficiency calibration mirror axis consistency verification device of the present invention;

Fig. 2 is a kind of basic structure schematic diagram of the parallel light pipe in Fig. 1;

Fig. 3 is a kind of basic structure schematic diagram of the target mirror to be checked in Fig. 1;

In the figure: 1 is a collimator, 2 is a target mirror to be checked, 3 is a cylinder, 4 is a two-dimensional azimuth adjustment stage, 5 is an electronic cross reticle generator, 6 is a computer-side control system, and 7 is an LED Display, 8 is the collimator light source, 9 is the aperture diaphragm, 10 is the collimating lens, 11 is the objective lens aperture of the target lens to be checked, 12 is the internal CCD of the target lens, and 13 is the outer cylinder of the target lens.

Detailed ways

The preferred modes of the present invention will be described in further detail below with reference to the accompanying drawings.

Referring to Figure 1, Figure 2 and Figure 3, a high-efficiency target calibration mirror axis consistency verification device of the present invention includes a two-dimensional orientation adjustment table 4, and a cylinder 3 installed on the adjustment table, and the target calibration mirror 2 to be inspected Installed inside the cylinder, the parallel light emitted by the collimator 1 fills the aperture 11 of the objective lens of the target lens to be checked. The CCD12 inside the calibration mirror transmits the star point image of the collimator to the electronic cross reticle generator 5, processes it through the computer terminal control system 6, and displays it on the LED display 7:

The adjustment stage is a two-dimensional azimuth adjustment stage 4, including pitch and yaw adjustment.

The electronic cross reticle generator 5 mainly superimposes an electronic reticle on the basis of the CCD imaging signal, and the reticle can be moved directly by a computer-side control system.

The radius of the aperture diaphragm 9 at the focal plane of the collimator is 0.05-0.1 mm, so that it can emit quasi-parallel light.

The collimator light source 8 is an adjustable light source, and its intensity is such that the CCD will not be saturated.

The outer circle 13 of the outer cylinder of the calibration mirror and the inner wall of the cylinder 3 on the adjustment stage are in tolerance fit.

During adjustment, except for the adjustment of the two-dimensional adjustment table, there is no need to do any adjustment inside the target mirror to be calibrated. Just use the mouse to move the electronic cross reticle, and the system can be installed and calibrated, which is efficient and simple, and greatly improves the calibration efficiency.

The electronic reticle should be locked after the calibration mirror is installed and adjusted.

It works like this:

It includes a two-dimensional azimuth adjustment table 4 that can be adjusted two-dimensionally, and a cylinder 3 whose inner circle is matched with the tolerance of the outer circle of the calibration mirror. After the target mirror 2 to be checked is inserted into the cylinder 3, it can be rotated smoothly, and a first-level collimator 1 is placed in front of the target mirror 2 to be checked, so that the parallel light emitted by the collimator 1 fills the target mirror 2 to be checked. The diameter of the objective lens. The CCD12 inside the calibration mirror will transmit the star point image of the collimator into the electronic cross reticle generator 5 . The electronic cross reticle generator 5 can generate a movable electronic reticle on the LED display. The control of the electronic reticle is carried out through the computer-side software control system. Find the axis of the outer circle of the calibration mirror inserting rod by rotating the calibration mirror to be checked, and adjust the adjustment table for two-dimensional adjustment. When the star point image of the collimator in the display no longer rotates, the axis is found at this time, and the computer terminal will The center of the reticle is moved to coincide with the star point, and the optical axis and the mechanical axis are defined. Save the position of the cross reticle, remove the computer, and lock the cross reticle.

The two-dimensional azimuth adjustment stage 4 mainly provides azimuth adjustment of pitch and yaw for the target calibration mirror, so that the mechanical axis can coincide with the optical axis.

The inner wall of the cylinder 3 is matched with the tolerance of the outer circle of the insertion rod of the target calibration mirror, and the two are closely matched, but the outer circle of the calibration mirror can rotate smoothly in the inner circle of the inner cylinder.

Collimator 1 provides the system with an infinity star point target. The size of the star point at the focal plane is 0.05mm, and the power of the illumination light source at the star point can be adjusted so that the CCD star point image will not be saturated.

The electronic cross reticle generator 5 mainly generates an electronic cross reticle, and parameters such as the shape of the reticle, the step size of the reticle moving up and down, left and right, and the contrast between the cross reticle and the screen brightness can be obtained through the computer terminal. Control adjustment.

The LED display 7 directly displays the degree of inconsistency between the optical axis and the mechanical axis, and adjusts the two-dimensional azimuth adjustment stage according to the degree. The mouse directly moves the cross reticle to the star point position and locks it. The center of the cross reticle is the optical axis and mechanical axis of the defined calibration mirror.

The known technologies in the art involved in the present invention are not described in detail.

Claims (2)

1. A high-efficiency target calibration mirror axis consistency verification device is characterized in that: comprising a two-dimensional orientation adjustment table (4), and a cylinder (3) installed on the adjustment table, and the target calibration mirror (2) to be inspected is installed Inside the cylinder, the parallel light emitted by the collimator (1) fills the aperture (11) of the objective lens of the calibration lens to be checked, and the CCD (12) inside the calibration lens transmits the star point image of the collimator to the electronic cross reticle for generation. The electronic cross reticle generator (5) is respectively connected with the computer terminal control system (6) and the LED display (7); The adjustment table is a two-dimensional azimuth adjustment table (4), including the adjustment of pitch and yaw; The electronic cross reticle generator (5) is used to superimpose and generate an electronic reticle on the basis of the CCD imaging signal, and the reticle can be directly moved and locked by a computer-side control system; The radius of the aperture diaphragm (9) at the focal plane of the collimated light pipe is 0.05-0.1 mm, so that it can emit quasi-parallel light; The light source in front of the aperture diaphragm (9) is an adjustable visible light source, and its light output intensity is adjusted so that the CCD will not be saturated. 2. A high-efficiency calibration mirror axis consistency verification device according to claim 1, characterized in that: the outer cylinder (13) of the calibration mirror outer cylinder and the inner wall of the cylinder (3) on the adjustment stage are tolerance fit.

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