A debugging mechanism and debugging method for a folding optical path mirror of an optoelectronic instrument optomechanical system

Abstract

The present invention discloses an adjusting mechanism for a folding optical path mirror of an optoelectronic instrument optical-mechanical system, which is composed of an optoelectronic instrument optical-mechanical platform, a linear slide rail, an optoelectronic autocollimator, an optical experimental platform, a flat crystal, an objective lens mounting surface, a mirror and a standard cube; the linear slide rail, the objective lens mounting surface and the optical experimental platform are arranged on the optoelectronic instrument optical-mechanical platform, the linear slide rail is parallel to one side of the optical experimental platform, and the objective lens mounting surface is arranged on the side of the optical experimental platform close to the linear slide rail; the optoelectronic autocollimator is arranged on the linear slide rail; the mirror and the standard cube are arranged on the optical experimental platform; a flat crystal is arranged at one end of the objective lens mounting surface close to the linear slide rail. Another aspect of the present invention provides a method for adjusting a folding optical path mirror of an optoelectronic instrument optical-mechanical system. The above technical solution of the present invention is simple to operate, effectively avoids the influence of the linear guide rail jumping error, and improves the efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical-mechanical design and alignment of the optical-mechanical system of optoelectronic instruments, and relates to an adjustment mechanism and an adjustment method for a folding optical path mirror of an optoelectronic instrument optical-mechanical system. Background Art

[0002] A mirror is an important component that works between an optoelectronic detector and an observation target to adjust and stabilize the optical axis of an optical system. It has the advantages of high precision, small volume, compact structure, high bandwidth, and high speed, and has been widely applied in important technical fields such as space laser communication, infrared thermal imager, high-speed camera, astronomical telescope, and image motion compensation of aerial cameras.

[0003] Currently, optoelectronic imaging systems are developing towards the technical directions of miniaturization and lightweight. Introducing a mirror in the imaging optical-mechanical system can achieve optical folding, enabling flexible layout of optical components and circuit control components, and making the overall machine structure design more compact, miniaturized, and lightweight.

[0004] There are processing errors in the processing of structural parts and optical elements in the optical-mechanical system. After being assembled into components, there are assembly errors and cumulative errors of components. The position of the mirror often has a large deviation from the theoretical design position, which requires correction of the mirror position. The fixed installation method and correction and adjustment of the mirror are important contents in the optical-mechanical assembly and adjustment link of optoelectronic systems, and their assembly and adjustment and correction levels affect important indicators such as the imaging quality, detection distance, and optical transfer function of optoelectronic instruments.

[0005] There are two traditional methods for mirror assembly, adjustment, and correction. One is to place some shims with different thicknesses under the fixed installation angle of the mirror to change the position of the mirror reflection surface in the optical system. This method is difficult to operate, damages the flatness of the installation surface, and easily causes uneven stress on several fixed end faces of the mirror, resulting in deformation of the mirror in high and low temperature, shock, and vibration use environments, and further causing problems such as the deviation of the optical axis of the optoelectronic system and the decline of imaging quality and detection distance. Another method is to grind the fixed installation end faces at different positions of the mirror and adjust the installation position of the mirror by changing the relative height between this end face and the reflection surface. This method is inefficient and difficult to operate, and also has the problem of easy deformation due to uneven stress after fastening. Summary of the Invention

[0006] The present invention proposes a fixed installation mechanism for a mirror in an optoelectronic instrument optical-mechanical system. This mechanism can achieve two-dimensional adjustment of the mirror position, is convenient to adjust, and has uniform stress after fastening, and will not deform to affect the performance of the optoelectronic system when used in extreme environments. In addition, a method for adjusting a folding optical path mirror of an optoelectronic instrument optical-mechanical system is also proposed. This method can ensure that the positions of two mirrors are infinitely close to the theoretical design positions and meet the requirements of the optical system design indicators.

[0007] To solve the above problems, the first aspect of the present invention provides an adjusting mechanism for a folding optical path mirror of an optoelectronic instrument optical-mechanical system, which is composed of an optoelectronic instrument optical-mechanical platform, a linear slide rail, an optoelectronic autocollimator, an optical experimental platform, a plane-parallel plate, an objective lens mounting surface, a mirror, and a standard cube; the linear slide rail, the objective lens mounting surface, and the optical experimental platform are arranged on the optoelectronic instrument optical-mechanical platform, the linear slide rail is parallel to one side of the optical experimental platform, and the objective lens mounting surface is arranged on the optical experimental platform close to the linear slide rail side; the optoelectronic autocollimator is arranged on the linear slide rail; the mirror and the standard cube are arranged on the optical experimental platform; a plane-parallel plate is arranged at one end of the objective lens mounting surface close to the linear slide rail. The optoelectronic autocollimator: is used to measure the angle between the outgoing parallel light and the reflected optical path, and the measurement accuracy is 0.02″; the plane-parallel plate: is a high-precision coated plane-parallel plate, the aperture of the plane-parallel plate is larger than the aperture of the objective lens mounting surface to be adjusted, the surface form accuracy ≤ λ / 60 where λ = 632.8nm, and the parallelism between the two surfaces is less than 0.01mm; the standard cube: two adjacent surfaces of the cube are coated with a reflective film, and the vertical angle deviation between the two adjacent surfaces < 2″; the linear slide rail: the vertical jump angle of the whole linear motion process < 40″.

[0008] Further, the mirror is composed of a plane mirror, a mirror pitch adjustment bracket, a mirror horizontal adjustment bracket, a pressing block, and a bottom plate; the plane mirror is fixed on the mirror pitch adjustment bracket by screws; the mirror pitch adjustment bracket is installed on the mirror horizontal adjustment bracket and is fixed by pressing with screws passing through the pressing block; the mirror horizontal adjustment bracket is installed and fixed on the bottom plate. The flatness of the installation end face of the plane mirror and the mirror fixing surface of the mirror pitch adjustment bracket is 0.01mm.

[0009] Further, a pair of symmetric circular rotating shafts are arranged on the left and right of the horizontal center line of the mirror pitch adjustment bracket, and a pair of symmetric semi-circular grooves are arranged on the left and right of the mirror horizontal adjustment bracket, and the diameter of the groove is the same as the diameter of the circular rotating shaft of the mirror pitch adjustment bracket. Through the cooperation of the rotating shaft and the groove, the pitch adjustment of the plane mirror can be realized.

[0010] Further, a groove is arranged at the lower part of the pressing block, the diameter of the groove is the same as the diameter of the rotating shaft, and the central angle of the groove is 160°. The pressing block is used for the tight connection between the rotating shaft of the mirror pitch adjustment bracket and the groove of the mirror horizontal adjustment bracket, and the pressing block screw is tightened after the debugging is completed.

[0011] Further, a fastening contact surface is provided on the side of the mirror pitching adjustment bracket. The fastening contact surface is perpendicular to the horizontal center line of the mirror pitching adjustment bracket. An inner side surface of the mirror horizontal adjustment bracket is provided with a contact surface that cooperates with the fastening contact surface of the mirror pitching adjustment bracket. The contact surface of the mirror horizontal adjustment bracket is parallel to the fastening contact surface of the mirror pitching adjustment bracket. The perpendicularity between the fastening contact surface and the center line of the rotating shaft is designed and processed to be 0.01 mm. The perpendicularity between the contact surface of the mirror horizontal adjustment bracket and the central axis of the card slot is 0.01 mm. The fastening contact surface cooperates with the contact surface of the mirror horizontal adjustment bracket. After installation and debugging are completed, the two bracket contact surfaces are connected, fastened, and locked with two screws.

[0012] Further, a pin hole is provided on the vertical center line of the mirror horizontal adjustment bracket, and a pin is provided on the vertical center line of the mirror on the base plate. The pin cooperates with the pin hole. Through this pin, the horizontal adjustment of the mirror around the pin axis can be achieved.

[0013] Further, an optical lens is provided on the opto-mechanical platform of the optoelectronic instrument. The optical lens is composed of an optical lens frame, an optical lens pitching adjustment bracket, an optical lens pitching adjustment bracket pressing block, and an optical lens horizontal adjustment bracket. The optical lens frame is fixed to the optical lens pitching adjustment bracket by screws; the optical lens pitching adjustment bracket is installed on the optical lens horizontal adjustment bracket and is tightly fixed by screws passing through the optical lens pitching adjustment bracket pressing block.

[0014] According to another aspect of the present invention, a method for debugging the folding optical path mirror of an optoelectronic instrument opto-mechanical system is provided, including the following steps:

[0015] Step 1: Install and fix the optoelectronic instrument opto-mechanical system to be debugged;

[0016] Step 2: Move the linear slide rail so that the optical emission window of the autocollimator is at the center of the objective lens mounting surface; place a plane parallel plate in front of the objective lens mounting surface. The plane parallel plate is close to the objective lens mounting surface. Rotate the pitching and horizontal adjustment knobs of the autocollimator so that the cross image reflected back by the plane parallel plate from the emitted light of the autocollimator coincides with the center of the graticule;

[0017] Step 3: Place a standard cube under the optical path of the first mirror. The placement surface of the cube is the same plane or a parallel plane as the mounting surface of the first mirror assembly, ensuring the perpendicularity between the side surface of the cube and the mounting surface of the first mirror; Move the linear slide rail to one side of the cube. Due to the jump error of the linear slide rail, at this time, the cross image reflected back by the plane parallel plate from the emitted light of the autocollimator does not coincide with the center of the graticule. Record the horizontal offset as X and the pitching offset as Y;

[0018] Step 4: Remove the optical flat, rotate and adjust the position of the cube so that the horizontal and pitch deviations of the cross image reflected back by the cube from the self-collimator from the center of the graticule are X and Y respectively, thus eliminating the influence of the linear guideway jitter error and ensuring the parallelism and perpendicularity between the side surface of the cube and the objective lens mounting surface;

[0019] Step 5: Move the linear guideway so that the self-collimator is at the center position of the objective lens mounting surface; then adjust the pitch and horizontal positions of the mirror assembly so that the cross image reflected back by the self-collimator through the first mirror and the cube coincides with the center of the graticule;

[0020] Step 6: Tighten the fixing screws on the first mirror assembly to keep the position of the first mirror fixed.

[0021] Furthermore, the following steps are also included:

[0022] Step 7: Install the second mirror assembly on the optical experiment platform. The second mirror is parallel to the first mirror. Place the cube in the lower optical path position of the second mirror. The plane where the cube is placed is the same plane or a parallel plane as the mirror assembly, ensuring the perpendicularity between the side surface of the cube and the mirror mounting surface;

[0023] Step 8: Move the linear slide rail to one side of the cube and adjust the position of the cube so that the horizontal and pitch deviations of the cross image reflected back by the cube from the self-collimator from the center of the graticule are X and Y respectively;

[0024] Step 9: Move the linear guideway so that the self-collimator is at the center position of the objective lens mounting surface; then adjust the pitch and horizontal positions of the second mirror assembly so that the cross image reflected back by the self-collimator through the first mirror, the second mirror and the cube coincides with the center of the graticule;

[0025] Step 10: Tighten the fixing screws on the second mirror assembly to keep the position of the mirror fixed.

[0026] Furthermore, after tightening the fixing screws on the first mirror assembly, the following steps can also be included:

[0027] Step 7: Install the second mirror assembly on the optical experiment platform. The second mirror is perpendicular to the first mirror. Place the cube in the lower optical path position of the second mirror. The plane where the cube is placed is the same plane or a parallel plane as the mirror assembly, ensuring the perpendicularity between the side surface of the cube and the mirror mounting surface;

[0028] Step 8: Move the linear slide rail to one side of the cube and adjust the position of the cube so that the horizontal and pitch deviations of the cross image reflected back by the cube from the self-collimator from the center of the graticule are X and Y respectively;

[0029] Step 9: Move the linear guide rail to place the autocollimator at the center position of the objective lens mounting surface; then adjust the pitch and horizontal positions of the second mirror assembly so that the cross image emitted by the autocollimator and reflected back by the first mirror, the second mirror, and the cube coincides with the center of the reticle.

[0030] Step 10: Tighten the fixing screws on the second mirror assembly to keep the position of the mirror fixed.

[0031] The above technical solution of the present invention has the following beneficial technical effects: simple operation, effectively avoiding the influence of the jumping error of the linear guide rail, and improving the efficiency. Description of the Drawings

[0032] Figure 1 It is a structural diagram of the mirror;

[0033] Figure 2 It is a diagram of the pitch adjustment bracket of the mirror;

[0034] Figure 3 It is a diagram of the horizontal adjustment bracket of the mirror;

[0035] Figure 4 It is a diagram of the pressing block and fastening;

[0036] Figure 5 It is a diagram of the bottom plate;

[0037] Figure 6 It is a schematic diagram of the mirror calibration and debugging device;

[0038] Figure 7 It is a schematic diagram of the reflection optical path between the autocollimator and the edge of the flat crystal;

[0039] Figure 8 It is a schematic diagram of the cube calibration and debugging optical path at the lower optical path of the first mirror;

[0040] Figure 9 It is a schematic diagram of the calibration and debugging optical path of the first mirror;

[0041] Figure 10 It is a schematic diagram of the cube calibration and debugging optical path at the lower optical path of the second mirror;

[0042] Figure 11 It is a schematic diagram of the calibration and debugging optical path of the second mirror;

[0043] Figure 12 It is a schematic diagram of the optical lens calibration and debugging mechanism of the optoelectronic instrument optomechanical system;

[0044] Figure 13 It is a schematic diagram of the calibration and debugging of the L-shaped folding optical path mirror;

[0045] Figure 14 It is a schematic diagram for the calibration and debugging of a U-shaped folding optical path mirror.

[0046] Reference numerals:

[0047] 1: Plane mirror; 2: Mirror pitch adjustment bracket; 3: Mirror horizontal adjustment bracket; 4: Compression block; 5: Base plate; 6: Mirror pitch adjustment rotation axis; 7: Mirror horizontal adjustment rotation axis; 8: Mirror fixing plane; 9: Mirror pitch adjustment bracket rotation axis; 10: Mirror pitch adjustment bracket contact surface; 11: Mirror horizontal adjustment bracket groove; 12: Mirror horizontal adjustment bracket contact surface; 13: Side screw fixing hole of mirror horizontal adjustment bracket; 14: Pin hole of mirror horizontal adjustment bracket; 15: Fixing screw hole between mirror horizontal adjustment bracket and base plate; 16: Fixing threaded hole between base plate and mirror horizontal adjustment bracket; 17: Mirror horizontal adjustment center positioning pin; 18: Linear slide rail; 19: Photoelectric autocollimator; 20: Optical experiment platform; 21: Flat crystal; 22: Autocollimator emission light and flat crystal center reflection optical path; 23: Objective lens mounting surface; 24: Mirror; 25: Standard cube; 26: Photoelectric instrument optomechanical platform; 27: Autocollimator and flat crystal edge reflection optical path; 28: Cube calibration and debugging optical path at the lower optical path of the first mirror; 29: First mirror calibration and debugging optical path; 30: Cube calibration and debugging optical path at the lower optical path of the second mirror; 31: Second mirror calibration and debugging optical path; 32: Optical lens frame; 33: Optical lens pitch adjustment bracket; 34: Optical lens pitch adjustment bracket rotation axis; 35: Optical lens pitch adjustment bracket compression block; 36: Optical lens horizontal adjustment bracket; 37: Optical lens adjustment bracket contact surface; 38: Optical lens horizontal adjustment rotation axis positioning pin; 39: L-shaped folding optical path mirror calibration and debugging optical path; 40: U-shaped folding optical path mirror calibration and debugging optical path. Specific embodiments

[0048] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0049] Example 1: As Figure 6As shown in the figure, an adjusting mechanism for a folding optical path mirror of an optoelectronic instrument optomechanical system is composed of an optoelectronic instrument optomechanical platform 26, a linear slide rail 18, an optoelectronic autocollimator 19, an optical experimental platform 20, a flat crystal 21, an objective lens mounting surface 23, a mirror 24 and a standard cube 25; the linear slide rail 18, the objective lens mounting surface 23 and the optical experimental platform 20 are arranged on the optoelectronic instrument optomechanical platform 26, the linear slide rail 18 is parallel to one side of the optical experimental platform 20, and the objective lens mounting surface 23 is arranged on the side of the optical experimental platform 20 close to the linear slide rail 18; the optoelectronic autocollimator 19 is arranged on the linear slide rail 18; the mirror 24 and the standard cube 25 are arranged on the optical experimental platform 26; a flat crystal 21 is arranged at one end of the objective lens mounting surface 23 close to the linear slide rail 18. The optoelectronic autocollimator: is used to measure the angle between the outgoing parallel light and the reflected optical path, and the measurement accuracy is 0.02″; the flat crystal: is a high-precision coated flat crystal, the aperture of the flat crystal is larger than the aperture of the objective lens mounting surface to be adjusted, the surface form accuracy ≤ λ / 60, where λ = 632.8 nm, and the parallelism of the two surfaces is less than 0.01 mm; the standard cube: two adjacent surfaces of the cube are coated with reflective films, and the perpendicular angle deviation between the two adjacent surfaces < 2″; the linear slide rail: the vertical jump angle during the whole linear motion process < 40″.

[0050] Preferably, as Figures 1 - 5 shown in the figure, the mirror is composed of a plane mirror 1, a mirror pitch adjustment bracket 2, a mirror horizontal adjustment bracket 3, a pressing block 4 and a bottom plate 5; the plane mirror 1 is fixed on the mirror pitch adjustment bracket 2 by screws; the mirror pitch adjustment bracket 2 is installed on the mirror horizontal adjustment bracket 3 and is fixed by tightening with screws passing through the pressing block 4; the mirror horizontal adjustment bracket 3 is installed and fixed on the bottom plate 5. The flatness of the plane mirror installation end face and the mirror fixing face of the mirror pitch adjustment bracket is 0.01 mm.

[0051] Preferably, a symmetric circular rotating shaft is arranged on each of the left and right sides of the horizontal center line of the mirror pitch adjustment bracket, and a symmetric semi-circular clamping groove is arranged on each of the left and right sides of the mirror horizontal adjustment bracket. The diameter of the clamping groove is the same as the diameter of the circular rotating shaft of the mirror pitch adjustment bracket. Through the cooperation of the rotating shaft and the clamping groove, the pitch adjustment of the plane mirror can be realized.

[0052] Preferably, a groove is arranged at the lower part of the pressing block, the diameter of the groove is the same as the diameter of the rotating shaft, and the central angle of the groove is 160°. The pressing block is used for the firm connection between the rotating shaft of the mirror pitch adjustment bracket and the groove of the mirror horizontal adjustment bracket, and the screws of the pressing block are tightened after the debugging is completed.

[0053] Preferably, a fastening contact surface is provided on the side of the mirror pitching adjustment bracket. The fastening contact surface is perpendicular to the horizontal center line of the mirror pitching adjustment bracket. On the inner side surface of the mirror horizontal adjustment bracket, a contact surface that cooperates with the fastening contact surface of the mirror pitching adjustment bracket is provided. The contact surface of the mirror horizontal adjustment bracket is parallel to the fastening contact surface of the mirror pitching adjustment bracket. The perpendicularity between the fastening contact surface and the center line of the rotating shaft is designed and processed to be 0.01 mm, and the perpendicularity between the contact surface of the mirror horizontal adjustment bracket and the central axis of the card slot is 0.01 mm. The fastening contact surface cooperates with the contact surface of the mirror horizontal adjustment bracket. After the installation and debugging are completed, two screws are used to connect, fasten, and lock the contact surfaces of the two brackets.

[0054] Preferably, pin holes are provided on the vertical center line of the mirror horizontal adjustment bracket, and pins are provided on the vertical center line of the mirror on the bottom plate. The pins cooperate with the pin holes. Through the pins, the horizontal adjustment of the mirror around the pin shaft can be achieved.

[0055] Through the cooperation installation of the rotating shaft and the groove on the mirror pitching and horizontal adjustment brackets, the pitching adjustment of the mirror around the center of the rotating shaft can be achieved. Through the cooperation installation of the pin hole of the mirror horizontal adjustment bracket and the pin on the bottom plate, the horizontal adjustment of the mirror around the pin shaft can be achieved. The position of the mirror is fixed by the screws on the fastening block and the screws at the contact surface of the mirror adjustment bracket.

[0056] Preferably, as Figure 12 shown, an optical lens is provided on the opto-mechanical platform of the optoelectronic instrument. The optical lens is composed of an optical lens frame 32, an optical lens pitching adjustment bracket 33, an optical lens pitching adjustment bracket pressing block 35, and an optical lens horizontal adjustment bracket 36. The optical lens frame 32 is fixed on the optical lens pitching adjustment bracket 33 by screws; the optical lens pitching adjustment bracket 33 is installed on the optical lens horizontal adjustment bracket 36 and is tightly fixed by screws passing through the optical lens pitching adjustment bracket pressing block 35.

[0057] Embodiment 2: As Figures 7 - 11 shown, the calibration and debugging method for the Z-shaped folding optical path mirror in the opto-mechanical system of the optoelectronic instrument is as follows: The specific calibration and debugging steps are as follows:

[0058] Step 1: Install and fix the opto-mechanical system of the optoelectronic instrument to be debugged;

[0059] Step 2: Move the linear slide rail so that the optical emission window of the autocollimator is at the center of the objective lens mounting surface; place a plane parallel plate in front of the front end of the objective lens mounting surface. The plane parallel plate is close to the objective lens mounting surface. Rotate the pitching and horizontal adjustment knobs of the autocollimator so that the cross image reflected back by the plane parallel plate from the emitted light of the autocollimator coincides with the center of the reticle.

[0060] Step 3: Place a standard cube in the lower optical path of the first mirror. The placement surface of the cube is on the same plane or a parallel plane as the mounting surface of the mirror assembly, ensuring the perpendicularity of the side of the cube to the mounting surface of the mirror. Move the linear slide rail to one side of the cube. Due to the jump error of the linear slide rail, at this time, the cross image reflected back by the plane parallel plate after being emitted by the autocollimator does not coincide with the center of the graticule. Denote the horizontal offset as X and the pitch offset as Y;

[0061] Step 4: Remove the plane parallel plate and rotate and adjust the position of the cube so that the horizontal and pitch deviations of the cross image reflected back by the cube after being emitted by the autocollimator from the center of the graticule are X and Y respectively. In this way, the influence of the jump error of the linear guide rail is eliminated, ensuring the parallelism and perpendicularity of the side of the cube to the mounting surface of the objective lens;

[0062] Step 5: Move the linear guide rail so that the autocollimator is at the center position of the mounting surface of the objective lens. Then adjust the pitch and horizontal positions of the mirror assembly so that the cross image reflected back by the first mirror and the cube after being emitted by the autocollimator coincides with the center of the graticule;

[0063] Step 6: Tighten the fixing screws on the first mirror assembly to keep the position of the mirror fixed;

[0064] Step 7: Install the second mirror assembly on the optical experiment platform. The second mirror is parallel to the first mirror. Place the cube in the lower optical path position of the second mirror. The placement plane of the cube is on the same plane or a parallel plane as the mirror assembly, ensuring the perpendicularity of the side of the cube to the mounting surface of the mirror.

[0065] Step 8: Move the linear slide rail to one side of the cube and adjust the position of the cube so that the horizontal and pitch deviations of the cross image reflected back by the cube after being emitted by the autocollimator from the center of the graticule are X and Y respectively;

[0066] Step 9: Move the linear guide rail so that the autocollimator is at the center position of the mounting surface of the objective lens. Then adjust the pitch and horizontal positions of the second mirror assembly so that the cross image reflected back by the first mirror, the second mirror and the cube after being emitted by the autocollimator coincides with the center of the graticule;

[0067] Step 10: Tighten the fixing screws on the second mirror assembly to keep the position of the mirror fixed.

[0068] Example 3: As Figure 13 shown, the calibration and debugging method of the L-shaped folding optical path mirror in the opto-mechanical system of the optoelectronic instrument is as follows:

[0069] Step 1: Install and fix the opto-mechanical system of the optoelectronic instrument to be debugged;

[0070] Step 2: Move the linear slide rail so that the optical emission window of the autocollimator is at the center of the objective lens mounting surface; Place a plane-parallel plate in front of the front end of the objective lens mounting surface, with the plane-parallel plate closely attached to the objective lens mounting surface. Rotate the pitch and horizontal adjustment knobs of the autocollimator so that the cross image reflected back by the plane-parallel plate from the emitted light of the autocollimator coincides with the center of the reticle;

[0071] Step 3: Place a standard cube in the lower optical path of the reflector. The placement surface of the cube is the same plane or a parallel plane as the reflector assembly mounting surface, ensuring the perpendicularity of the side surface of the cube to the first reflector mounting surface. Move the linear slide rail to one side of the cube. Due to the jump error of the linear slide rail, at this time, the cross image reflected back by the plane-parallel plate from the emitted light of the autocollimator does not coincide with the center of the reticle. Denote the horizontal offset as X and the pitch offset as Y;

[0072] Step 4: Remove the plane-parallel plate and rotate and adjust the position of the cube so that the horizontal and pitch deviations of the cross image reflected back by the cube from the emitted light of the autocollimator are X and Y respectively. In this way, the influence of the jump error of the linear guide rail is eliminated, ensuring the parallelism and perpendicularity of the side surface of the cube to the objective lens mounting surface;

[0073] Step 5: Move the linear guide rail so that the autocollimator is at the center position of the objective lens mounting surface. Then adjust the pitch and horizontal positions of the reflector assembly so that the cross image reflected back by the first reflector and the cube from the emitted light of the autocollimator coincides with the center of the reticle;

[0074] Step 6: Tighten the fixing screws on the first reflector assembly so that the position of the reflector remains fixed;

[0075] Example 4: As Figure 14 shown, for the calibration and debugging method of the U-shaped folding optical path reflector in the opto-mechanical system of an optoelectronic instrument, the specific calibration and debugging steps are as follows:

[0076] Step 1: Install and fix the opto-mechanical system of the optoelectronic instrument to be debugged;

[0077] Step 2: Move the linear slide rail so that the optical emission window of the autocollimator is at the center of the objective lens mounting surface; Place a plane-parallel plate in front of the front end of the objective lens mounting surface, with the plane-parallel plate closely attached to the objective lens mounting surface. Rotate the pitch and horizontal adjustment knobs of the autocollimator so that the cross image reflected back by the plane-parallel plate from the emitted light of the autocollimator coincides with the center of the reticle;

[0078] Step 3: Place a standard cube in the lower optical path of the first mirror. The placement surface of the cube is in the same plane or a parallel plane as the mounting surface of the mirror assembly, ensuring the perpendicularity of the side of the cube to the mounting surface of the mirror. Move the linear slide rail to one side of the cube. Due to the jump error of the linear slide rail, at this time, the cross image reflected back by the plane parallel plate after being emitted by the autocollimator does not coincide with the center of the graticule. Denote the horizontal offset as X and the pitch offset as Y;

[0079] Step 4: Remove the plane parallel plate and rotate and adjust the position of the cube so that the horizontal and pitch deviations of the cross image reflected back by the cube after being emitted by the autocollimator from the center of the graticule are X and Y respectively. In this way, the influence of the jump error of the linear guide rail is eliminated, ensuring the parallelism and perpendicularity of the side of the cube to the mounting surface of the objective lens;

[0080] Step 5: Move the linear guide rail so that the autocollimator is at the center position of the mounting surface of the objective lens. Then adjust the pitch and horizontal positions of the mirror assembly so that the cross image reflected back by the first mirror and the cube after being emitted by the autocollimator coincides with the center of the graticule;

[0081] Step 6: Tighten the fixing screws on the first mirror assembly to keep the position of the mirror fixed;

[0082] Step 7: Install the second mirror assembly on the optical experiment platform. The second mirror is perpendicular to the first mirror. Place the cube in the lower optical path position of the second mirror. The placement plane of the cube is in the same plane or a parallel plane as the mirror assembly, ensuring the perpendicularity of the side of the cube to the mounting surface of the mirror.

[0083] Step 8: Move the linear slide rail to one side of the cube and adjust the position of the cube so that the horizontal and pitch deviations of the cross image reflected back by the cube after being emitted by the autocollimator from the center of the graticule are X and Y respectively;

[0084] Step 9: Move the linear guide rail so that the autocollimator is at the center position of the mounting surface of the objective lens. Then adjust the pitch and horizontal positions of the second mirror assembly so that the cross image reflected back by the first mirror, the second mirror and the cube after being emitted by the autocollimator coincides with the center of the graticule;

[0085] Step 10: Tighten the fixing screws on the second mirror assembly to keep the position of the mirror fixed.

[0086] Example 5: The method for correcting and debugging the mirror in the Z-shaped folding optical path of an infrared thermal imager, and the specific steps for correction and debugging are as follows:

[0087] Step 1: Place and fix the main housing of the infrared thermal imager to be debugged on the opto-mechanical platform of the optoelectronic instrument according to the debugging requirements;

[0088] Step 2: Move the linear slide rail so that the optical emission window of the autocollimator is at the center of the objective lens mounting surface of the infrared thermal imager. Place a plane-parallel plate in front of the front end of the objective lens mounting surface, with the plane-parallel plate closely adjacent to the objective lens mounting surface. Rotate the pitch and horizontal adjustment knobs of the autocollimator so that the cross image reflected back by the plane-parallel plate from the emitted light of the autocollimator coincides with the center of the reticle;

[0089] Step 3: Place a standard cube in the lower optical path of the first mirror. The placement surface of the cube is in the same plane or a parallel plane as the mirror assembly mounting surface, ensuring the perpendicularity of the side of the cube to the mirror mounting surface. Move the linear slide rail to one side of the cube. Due to the jump error of the linear slide rail, at this time, the cross image reflected back by the plane-parallel plate from the emitted light of the autocollimator does not coincide with the center of the reticle. Denote the horizontal offset as X and the pitch offset as Y;

[0090] Step 4: Remove the plane-parallel plate and rotate and adjust the position of the cube so that the horizontal and pitch deviations of the cross image reflected back by the cube from the emitted light of the autocollimator from the center of the reticle are X and Y respectively. In this way, the influence of the jump error of the linear guide rail is eliminated, ensuring the parallelism and perpendicularity of the side of the cube to the objective lens mounting surface;

[0091] Step 5: Move the linear guide rail so that the autocollimator is at the center position of the objective lens mounting surface. Then adjust the pitch and horizontal positions of the mirror assembly so that the cross image reflected back by the first mirror and the cube from the emitted light of the autocollimator coincides with the center of the reticle;

[0092] Step 6: Tighten the fixing screws on the first mirror assembly so that the position of the mirror remains fixed;

[0093] Step 7: Install the second mirror assembly on the optical experiment platform. The second mirror is parallel to the first mirror. Place the cube in the lower optical path position of the second mirror. The placement plane of the cube is in the same plane or a parallel plane as the mirror assembly, ensuring the perpendicularity of the side of the cube to the mirror mounting surface;

[0094] Step 8: Move the linear slide rail to one side of the cube and adjust the position of the cube so that the horizontal and pitch deviations of the cross image reflected back by the cube from the emitted light of the autocollimator from the center of the reticle are X and Y respectively;

[0095] Step 9: Move the linear guide rail so that the autocollimator is at the center position of the objective lens mounting surface. Then adjust the pitch and horizontal positions of the second mirror assembly so that the cross image reflected back by the first mirror, the second mirror, and the cube from the emitted light of the autocollimator coincides with the center of the reticle;

[0096] Step 10: Tighten the fixing screws on the second mirror assembly so that the position of the mirror remains fixed;

[0097] Step 11: After the mirror is debugged, other optical lenses are installed and fixed, and then an infrared detector and a circuit component are added to form a complete opto-mechanical system capable of infrared imaging.

[0098] The opto-mechanical system of the optoelectronic instrument in the text includes: infrared thermal imager, visible light sight, space telescope, airborne infrared / visible light camera, laser emitter, etc. The mirror and lens debugging mechanism can be applied inside the above opto-mechanical system of the optoelectronic instrument.

[0099] It should be understood that the above specific embodiments of the present invention are only used for exemplary illustration or explanation of the principle of the present invention, and do not constitute a limitation to the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A debugging method for the folding optical path mirror of an optoelectronic instrument optomechanical system, characterized in that It includes the following steps: Step 1: Install and fix the opto-mechanical system of the optoelectronic instrument to be debugged; Step 2: Move the linear slide rail so that the optical emission window of the autocollimator is at the center of the objective lens mounting surface; Place a plane-parallel plate in front of the front end of the objective lens mounting surface. The plane-parallel plate is close to the objective lens mounting surface. Rotate the pitch and horizontal adjustment knobs of the autocollimator so that the cross image reflected back by the plane-parallel plate from the emitted light of the autocollimator coincides with the center of the graticule; Step 3: Place a standard cube in the lower optical path of the first mirror. The placement surface of the cube is in the same plane or a parallel plane as the mounting surface of the first mirror assembly, ensuring the perpendicularity of the side surface of the cube to the mounting surface of the first mirror; Move the linear slide rail to one side of the cube. Due to the jump error of the linear slide rail, at this time, the cross image reflected back by the plane-parallel plate from the emitted light of the autocollimator does not coincide with the center of the graticule. Denote the horizontal offset as X and the pitch offset as Y; Step 4: Remove the plane-parallel plate and rotate and adjust the position of the cube so that the horizontal and pitch deviations of the cross image reflected back by the cube from the emitted light of the autocollimator from the center of the graticule are X and Y respectively. In this way, the influence of the jump error of the linear guide rail is eliminated, ensuring the parallelism and perpendicularity of the side surface of the cube to the objective lens mounting surface; Step 5: Move the linear guide rail so that the autocollimator is at the center position of the objective lens mounting surface; Then adjust the pitch and horizontal positions of the mirror assembly so that the cross image reflected back by the first mirror and the cube from the emitted light of the autocollimator coincides with the center of the graticule; Step 6: Tighten the fixing screws on the first mirror assembly so that the position of the first mirror remains fixed; The opto-mechanical system of the optoelectronic instrument consists of an opto-mechanical platform of the optoelectronic instrument, a linear slide rail, an optoelectronic autocollimator, an optical experimental platform, a plane-parallel plate, an objective lens mounting surface, a mirror, and a standard cube; The linear slide rail, the objective lens mounting surface, and the optical experimental platform are arranged on the opto-mechanical platform of the optoelectronic instrument. The linear slide rail is parallel to one side of the optical experimental platform, and the objective lens mounting surface is arranged on the optical experimental platform close to the linear slide rail side; The optoelectronic autocollimator is arranged on the linear slide rail; The mirror and the standard cube are arranged on the optical experimental platform; A plane-parallel plate is provided at one end of the objective lens mounting surface close to the linear slide rail; the reflecting mirror is composed of a plane reflecting mirror, a reflecting mirror pitch adjustment bracket, a reflecting mirror horizontal adjustment bracket, a pressing block, and a bottom plate; the plane reflecting mirror is fixed to the reflecting mirror pitch adjustment bracket by screws; the reflecting mirror pitch adjustment bracket is mounted on the reflecting mirror horizontal adjustment bracket and is firmly fixed by screws passing through the pressing block; the reflecting mirror horizontal adjustment bracket is mounted and fixed on the bottom plate; on the horizontal center line of the reflecting mirror pitch adjustment bracket, there are symmetric circular rotating shafts on both the left and right sides, and on the left and right sides of the reflecting mirror horizontal adjustment bracket, there are symmetric semi-circular clamping grooves, and the diameter of the clamping groove is the same as the diameter of the circular rotating shaft of the reflecting mirror pitch adjustment bracket; a groove is provided at the lower part of the pressing block, and the diameter of the groove is the same as the diameter of the rotating shaft, and the central angle of the groove is 160°; a fastening contact surface is provided on the side surface of the reflecting mirror pitch adjustment bracket, and the fastening contact surface is perpendicular to the horizontal center line of the reflecting mirror pitch adjustment bracket. An inner side surface of the reflecting mirror horizontal adjustment bracket is provided with a contact surface that cooperates with the fastening contact surface of the reflecting mirror pitch adjustment bracket, and the contact surface of the reflecting mirror horizontal adjustment bracket is parallel to the fastening contact surface of the reflecting mirror pitch adjustment bracket; a pin hole is provided on the vertical center line of the reflecting mirror horizontal adjustment bracket, and a pin is provided on the vertical center line of the bottom plate corresponding to the reflecting mirror, and the pin cooperates with the pin hole; an optical lens is provided on the opto-mechanical platform of the optoelectronic instrument, and the optical lens is composed of an optical lens frame, an optical lens pitch adjustment bracket, an optical lens pitch adjustment bracket pressing block, and an optical lens horizontal adjustment bracket. The optical lens frame is fixed to the optical lens pitch adjustment bracket by screws; the optical lens pitch adjustment bracket is mounted on the optical lens horizontal adjustment bracket and is firmly fixed by screws passing through the optical lens pitch adjustment bracket pressing block.

2. The debugging method of the folding optical path mirror of the opto-electronic instrument opto-mechanical system according to claim 1, characterized in that The following steps are further included: Step 7: Install the second reflecting mirror assembly on the optical experiment platform. The second reflecting mirror is parallel to the first reflecting mirror. Place the cube at the lower optical path position of the second reflecting mirror. The plane where the cube is placed is the same plane or a parallel plane as the reflecting mirror assembly, ensuring the perpendicularity of the side surface of the cube to the mounting surface of the reflecting mirror. Step 8: Move the linear slide rail to one side of the cube and adjust the position of the cube so that the horizontal and pitch deviations of the cross image reflected back by the cube from the self-collimator from the center of the graticule are X and Y respectively. Step 9: Move the linear guide rail so that the self-collimator is at the center position of the objective lens mounting surface; then adjust the pitch and horizontal positions of the second reflecting mirror assembly so that the cross image reflected back by the self-collimator through the first reflecting mirror, the second reflecting mirror, and the cube coincides with the center of the graticule. Step 10: Tighten the fixing screws on the second reflecting mirror assembly so that the position of the reflecting mirror remains fixed.

3. A debugging method for a folding optical path mirror of an optoelectronic instrument optical-mechanical system according to claim 1, characterized in that The following steps are further included: Step 7: Install the second reflecting mirror assembly on the optical experiment platform. The second reflecting mirror is perpendicular to the first reflecting mirror. Place the cube at the lower optical path position of the second reflecting mirror. The plane where the cube is placed is the same plane or a parallel plane as the reflecting mirror assembly, ensuring the perpendicularity of the side surface of the cube to the mounting surface of the reflecting mirror. Step 8: Move the linear slide rail to one side of the cube and adjust the position of the cube so that the horizontal and pitch deviations of the cross image reflected back by the cube from the autocollimator from the center of the reticle are X and Y respectively; Step 9: Move the linear guide rail so that the autocollimator is at the center position of the objective lens mounting surface; then adjust the pitch and horizontal positions of the second mirror assembly so that the cross image reflected back by the autocollimator through the first mirror, the second mirror, and the cube coincides with the center of the reticle; Step 10: Tighten the fixing screws on the second mirror assembly so that the position of the mirror remains fixed.

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