A target device for angle measurement and adjustment of optoelectronic system

Abstract

The utility model discloses a target device for angle measurement and adjustment of an optoelectronic system, which includes a lens barrel, a multi-spectrum target component, a light source component and a differentiated moving component; the target device is installed on the focal plane of a parallel light tube used for optoelectronic system detection, and can effectively meet the test requirements of various types of white light, low light and infrared optoelectronic systems in various illumination environments through precise light source illumination adjustment and flexible target plate position adjustment, and generate visible light target patterns and infrared target patterns of different brightness; through the generated multi-spectrum target pattern, high-precision universal measurement of angle indicators such as the field of view and angle measurement accuracy of the optoelectronic system can be conveniently and quickly achieved. The target device of this scheme greatly improves the accuracy and adaptability of the test; in addition, the device also has good environmental adaptability and stability, and can provide reliable test results in a variety of test environments, which is of great significance for promoting the development of optoelectronic technology.

Description

Technical Field

[0001] The utility model relates to the technical field of photoelectric detection, in particular to a target device used for angle measurement and adjustment of a photoelectric system. Background Art

[0002] The basic components of the optoelectronic system can be divided into: light source, object to be detected and formation of optical signal, matching processing of optical signal, optoelectronic conversion, amplification and processing of electrical signal, microcomputer, control system and display screen. Among them, the light beam emitted by the light source is the material that carries the information to be measured; the formation of the object to be detected and the optical signal uses various optical effects, such as reflection, absorption, interference, diffraction, polarization, etc., so that the light beam carries the characteristic information of the object to be detected and forms the optical signal to be detected; the matching processing of the optical signal can better obtain the information to be measured to meet the needs of optoelectronic conversion; optoelectronic conversion converts the optical signal into electrical signal; the amplification and processing of the electrical signal uses circuits with different functions to achieve various detection purposes; the microcomputer, control system and display screen are used to directly display the processed electrical signal to be measured through the display system.

[0003] The photoelectric target is a general test equipment for testing the tracking performance of the photoelectric tracking system. Its principle is roughly as follows: using a parallel light tube and a rotating mechanism indoors to simulate the movement of a space target, providing a simulated space target with a known trajectory for the photoelectric system under test, and detecting the photoelectric tracking performance of the system under test by tracking the simulated target. Before the test, the photoelectric dynamic target needs to be aligned with the photoelectric tracking system under test so that the vertex of the light cone of the photoelectric target when rotating basically coincides with the intersection of the rotating axis system of the photoelectric system under test. For example, the photoelectric dynamic target device provided by patent publication number CN 110940356 A, after the target simulation light tube emits a parallel light beam, it is transmitted through the first polarization beam splitter prism and reaches the first optical path component. The first optical path component reflects the parallel light beam and forms a simulated target light beam and a detection light beam. After the detection light beam passes through the first polarization beam splitter prism, it is reflected and output along the transmission channel, and is reflected and output by the auxiliary mechanism. The detection mechanism is used to receive the detection light beam reflected by the auxiliary mechanism and monitor the disturbance amount according to the angle change of the received detection light beam. The photoelectric dynamic target device provided by the invention can more accurately monitor the disturbance amount of the photoelectric dynamic target device during rotation and provide a high-precision dynamic measurement benchmark.

[0004] With the continuous development of optoelectronic technology, in addition to the increasing requirements for tracking performance, the requirements for high-precision detection of white light, low light and infrared general performance of optoelectronic systems under different illumination environments are also increasing. Traditional target devices often cannot simultaneously meet the detection needs of multi-spectrum detection and adjustable brightness. Therefore, it is particularly important to develop a fusion target device that can perform multi-spectrum photoelectric detection under different illumination environments. Utility Model Content

[0005] The utility model provides a kind of.

[0006] In order to solve the above-mentioned technical problems, the technical solution of the utility model is:

[0007] A target device for angle measurement and adjustment of an optoelectronic system, comprising a lens barrel, a multi-spectrum target assembly and a light source assembly connected in sequence;

[0008] One end of the lens barrel is used to connect to the collimator of the optoelectronic system, and the other end of the lens barrel is rotatably connected to the outer shell of the multi-spectrum target assembly, the outer shell is a hollow box structure, the target plate of the multi-spectrum target assembly is adjustably arranged in the outer shell through a mounting structure, and the aiming mark and the field of view detection mark of the target plate are constructed by metal wires;

[0009] The incident port of the light source assembly is fixedly connected to the outer shell, the incident port is provided with a filter, the light source assembly adopts an integrating sphere as a light source, the integrating sphere is arranged close to the exit port of the light source assembly, an aperture is arranged between the integrating sphere and the filter, the filter, the aperture and the light blocking plate in the integrating sphere are parallel to each other, and the exit port is used to connect the photoelectric detection assembly of the photoelectric system.

[0010] Furthermore, the lens barrel includes an inner tube, an outer tube and a transfer interface portion, the transfer interface portion is connected to the photoelectric system parallel light tube, the inner tube and the outer tube are coaxially rotated and axially slidably matched, the transfer interface portion is fixedly connected to one end of the inner tube, and the end of the outer tube away from the transfer interface portion is fixedly connected to the outer shell.

[0011] Furthermore, the lens barrel is made of ABS material through 3D printing, and the end surface of the transfer interface is in contact with the collimator of the optoelectronic system.

[0012] Furthermore, micrometers capable of reading displacement are provided in the axial and radial directions of the outer shell, the side surface of the target plate abuts against the free end of the micrometer, and the free end of the micrometer pushes the target plate to achieve up and down adjustment.

[0013] Furthermore, the target plate is made of non-metallic transparent material.

[0014] Furthermore, the filter is made of glass and is sealed and embedded in the incident port of the light source assembly.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the target device is installed on the focal plane of the collimator used for photoelectric system detection. Through precise light source illumination adjustment and flexible target plate position adjustment, it can effectively meet the test requirements of various types of white light, low light and infrared photoelectric systems in various illumination environments, and generate visible light target patterns and infrared target patterns of different brightness; through the generated multi-spectrum target patterns, it is possible to conveniently and quickly achieve high-precision universal measurement of angle indicators such as the field of view and angle measurement accuracy of the photoelectric system. The target device of this scheme greatly improves the accuracy and adaptability of the test; in addition, the device also has good environmental adaptability and stability, and can provide reliable test results in a variety of test environments, which is of great significance for promoting the development of photoelectric technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic structural diagram of an embodiment.

[0017] Figure 2 The figure is a schematic diagram of the structure of a target in one embodiment of the utility model.

[0018] Figure 3 The figure is a schematic diagram of the structure of a target plate in one embodiment of the utility model.

[0019] Figure 4 It is a schematic structural diagram of a multi-spectrum target component in one embodiment of the utility model.

[0020] Figure 5 The utility model is a schematic diagram of the cross-sectional structure of a micrometer in one embodiment. DETAILED DESCRIPTION

[0021] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] like Figures 1 to 5 As shown, a target device for angle measurement and adjustment of an optoelectronic system comprises a lens barrel, a multi-spectrum target assembly and a light source assembly 5 connected in sequence.

[0023] One end of the lens barrel is used to connect to the collimator of the optoelectronic system, and the other end of the lens barrel is rotatably connected to the outer shell 3 of the multi-spectrum target assembly; the outer shell 3 is a hollow box structure, and the hollow part of the outer shell 3 is a light-transmitting hole 11, and the light-transmitting hole 11 is connected to the interior of the lens barrel; the target plate 2 of the multi-spectrum target assembly is adjustably arranged in the outer shell 3 through a mounting structure, and the aiming mark and the field of view detection mark of the target plate 2 are constructed by a metal wire 14.

[0024] The lens barrel is rotatably connected to the outer shell 3, so the target plate 2 can be rotated relative to the lens barrel (and can be fixed after alignment), so as to facilitate alignment with the photoelectric device scale.

[0025] The incident port of the light source assembly 5 is fixedly connected to the outer shell 3, and a filter 9 is provided at the incident port. The light source assembly 5 adopts an integrating sphere as a light source, and the integrating sphere is arranged near the exit port 6 of the light source assembly 5. An aperture 8 is arranged between the integrating sphere and the filter 9. The filter 9, the aperture 8 and the light blocking plate 7 in the integrating sphere are parallel to each other, and the exit port 6 is used to connect the photoelectric detection assembly of the photoelectric system.

[0026] The light source assembly 5 can generate illumination within the range of ≤0.1LX or ≥10LX illumination, which can meet the illumination requirements of low-light and white-light instrument performance testing. The light source assembly 5 uses an integrating sphere with low-light illumination control capability as a visible and low-light light source. The integrating sphere is a miniaturized integrating sphere low-light system for low-light testing. Through the aperture 8, low-light adjustment output at different gears can be achieved. The symmetrical design ensures the uniformity of the output illumination.

[0027] Through the movable installation structure of the multi-spectrum target assembly of the present scheme, the light source assembly 5 together with the multi-spectrum target assembly can be moved forward and backward along the guide rail as a whole, and fixed by two mutually perpendicular sides of the outer shell 3 after positioning, which can meet the needs of simulating infinitely distant targets and close-range targets; at the same time, the structure of an integrating sphere combined with an aperture 8 is adopted to adjust the illumination of the light source; when performing infrared device performance testing, the metal wire 14 is heated by a heating circuit for aiming and testing by the infrared photoelectric system, thereby changing the temperature of the target plate 2 and its installation structure, thereby meeting the measurement needs of the infrared photoelectric system in addition to various types of white light and dim light.

[0028] Compared with the traditional method of moving the entire collimator or optoelectronic device, which is difficult to align, this case can read the micro-rotation angle of the target through image processing technology. The specific division pattern is designed according to the detection item and accuracy, but the specifications and dimensions of the target plate 2 and the installation adjustment mechanism are all universally adaptable.

[0029] In a preferred embodiment, the lens barrel comprises an inner tube 1, an outer tube 12 and a transfer interface 13, the transfer interface 13 is connected to the collimator of the optoelectronic system, the inner tube 1 and the outer tube 12 are coaxially rotated and axially slidably matched, the transfer interface 13 is fixedly connected to one end of the inner tube 1, and one end of the outer tube 12 away from the transfer interface 13 is fixedly connected to the outer shell 3. The outer shell 3 is mounted on a front-to-back guide rail so that the multi-spectrum target assembly can move forward and backward relative to the collimator of the optoelectronic system, and the inner tube 1 and the outer tube 12 slide axially relative to each other during the forward and backward movement.

[0030] In a preferred embodiment, the lens barrel is made of ABS material by 3D printing, and the end face of the transfer interface 13 is in contact with the collimator of the photoelectric system. The lens barrel, the outer shell 3 and the light source assembly 5 of the target device are made of ABS material 3D printing and the technology of fixing the tail of the collimator on one side, and can move back and forth quickly for focusing. The lens barrel is 3D printed, light in weight, and the entire target barrel is fixed on one side, which effectively avoids the error caused by the deformation of the all-metal structure and the problem of increased volume and weight of the collimator caused by multi-sided fixing.

[0031] In a preferred embodiment, a micrometer 4 capable of reading displacement is provided in the axial and radial directions of the outer shell 3, the side of the target plate 2 abuts against the free end of the micrometer 4, and the free end of the micrometer 4 pushes the target plate 2 to achieve vertical adjustment. Figure 3 , 4 As shown, the target plate 2 is supported by the free end of the micrometer 4. When a micrometer 4 is provided in the horizontal and vertical directions of the outer shell 3, threaded holes 10 can be opened on the two corresponding sides of the target plate 2. The free end of the micrometer 4 is threadedly connected to the threaded hole 10. When the micrometer 4 is rotated, the free end of the micrometer 4 drives the target plate 2 to move.

[0032] Limited by the current situation of the precision of the graticule lines, the present invention makes an adjustable design for the mounting structure of the target plate 2, and reads the micrometer 4 on the outer shell 3 to read the micro-displacement of the target plate 2, thereby detecting the angular resolution of the photoelectric device. The traditional method can only improve the target engraving accuracy and the resolution of the collimator, which makes the cost very high. When adjusting the position of the target plate 2, first move it in the horizontal and vertical directions. When the center of the graticule coincides with the aiming graticule center of the photoelectric equipment to be inspected, rotate the target plate 2 to achieve precise alignment of the aiming graticule and the detection graticule. The multi-spectrum target assembly needs to ensure that the illumination light source of the target plate 2 does not interfere with the moving slide.

[0033] In a preferred embodiment, the target plate 2 is made of non-metallic transparent material.

[0034] In a preferred embodiment, the filter 9 is made of glass and is sealed and embedded in the incident port of the light source assembly 5. This ensures that the integrating sphere is not polluted by the external environment and can also be used in outdoor environments. The design of the integrating sphere adopts a fully enclosed environment design, which does not leak light and ensures that the illumination output of weak light is not affected by ambient light. Good heat dissipation design ensures the stability of the output light.

[0035] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A target device for angle measurement and adjustment of an optoelectronic system, characterized in that: It includes a lens barrel, a multi-spectrum target assembly and a light source assembly which are connected in sequence; One end of the lens barrel is used to connect to the collimator of the optoelectronic system, and the other end of the lens barrel is rotatably connected to the outer shell of the multi-spectrum target assembly, and the outer shell is installed on a front-to-back guide rail so that the multi-spectrum target assembly can move forward and backward relative to the collimator of the optoelectronic system; the outer shell is a hollow box structure, and the target plate of the multi-spectrum target assembly is adjustably arranged in the outer shell through a mounting structure, and the aiming mark and the field of view detection mark of the target plate are constructed by metal wires; The incident port of the light source assembly is fixedly connected to the outer shell, the incident port is provided with a filter, the light source assembly adopts an integrating sphere as a light source, the integrating sphere is arranged close to the exit port of the light source assembly, an aperture is arranged between the integrating sphere and the filter, the filter, the aperture and the light blocking plate in the integrating sphere are parallel to each other, and the exit port is used to connect the photoelectric detection assembly of the photoelectric system.

2. A target device for angle measurement and adjustment of an optoelectronic system according to claim 1, characterized in that: The lens barrel includes an inner tube, an outer tube and a transfer interface portion, the transfer interface portion is connected to the photoelectric system collimator, the inner tube and the outer tube are coaxially rotated and axially slidably matched, the transfer interface portion is fixedly connected to one end of the inner tube, and the end of the outer tube away from the transfer interface portion is fixedly connected to the outer shell.

3. The target device for angle measurement and adjustment of an optoelectronic system according to claim 2, characterized in that: The lens barrel is made of ABS material through 3D printing, and the end surface of the transfer interface is in contact with the collimator of the photoelectric system.

4. The target device for angle measurement and adjustment of an optoelectronic system according to claim 2, characterized in that: Micrometers for reading displacement are arranged in the axial and radial directions of the outer shell, and the side surface of the target plate abuts against the free end of the micrometer, and the free end of the micrometer pushes the target plate to achieve up and down adjustment.

5. The target device for angle measurement and adjustment of an optoelectronic system according to claim 1, characterized in that: The target plate is made of non-metallic transparent material.

6. The target device for angle measurement and adjustment of an optoelectronic system according to claim 1, characterized in that: The filter is made of glass and is sealed and embedded in the incident port of the light source assembly.

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