Digital assembling device and method for pressing multiple planar optical element pressing blocks

Abstract

The invention relates to the technical field of optical machine assembling and adjusting, in particular to a digital assembling device and method for pressing a plurality of planar optical element pressing blocks, and the device comprises a displacement detection module, a detection support, a detection reference tool and a computer. The displacement detection module is used for measuring a mounting height deviation value of two optical elements on the optical element structural member relative to the optical element structural member and detecting a machining error value of a pressing surface of a pressing block of the optical element structural member; the detection support is used for simulating the theoretical relative position height of the pressing block pressing surface of the optical element structural member; the detection reference tool is used for calibrating the installation precision of the displacement detection module on the detection support. And the computer is used for acquiring the assembling and repairing sizes of the mounting surface and each pressing surface of the pressing block according to the mounting height deviation value and the machining error value. According to the invention, the surface position of the optical element is effectively measured, and the influence of high transmittance or high reflectivity on the measurement result is prevented, so that the subsequent assembly precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of optical-mechanical assembly and adjustment, and in particular to a digital assembly device and an assembly method for pressing a plurality of planar optical element pressing blocks. Background Art

[0002] The installation of plane optical elements includes: the installation of optical windows, reflectors, semi-reflective and semi-transparent lenses, and prisms. The installation process often requires pressing the rubber pads onto the plane optical elements through a pressing block to ensure the structural strength of the optical elements and achieve vibration process limitation. Therefore, the installation position accuracy of the pressing block, especially the height accuracy of the pressing surface of the pressing block relative to the surface of the plane optical element, directly determines the pressing amount of the rubber pad, affects the preload force of the plane optical element, and ultimately affects the imaging quality and structural strength of the optomechanical system.

[0003] For the pressing block that presses multiple spatial plane optical elements, due to its structural characteristics, the position measurement, repair and installation of the pressing block are more complicated. On the one hand, due to the different spatial angles of each optical element, contact measurement is prone to parts interference and scratches on the optical element; on the other hand, the spatial angle of the pressing surface of the pressing block causes the pressure loads of different planes to couple with each other. After the pressing block is repaired and assembled to meet the pressure load of one optical element, the pressing amount of another optical element changes accordingly, and its adjustment calculation is more complicated; in addition, due to the spatial angle between the installation surface and the pressing surface of the pressing block, the position accuracy of the pressing block measurement and the formal assembly process affects the pressing amount accuracy, and the repeatable positioning accuracy of the pressing block measurement and installation must be guaranteed.

[0004] Therefore, it is necessary to provide a digital assembly device and assembly method for pressing a plurality of planar optical element pressing blocks to solve the above problems. Summary of the invention

[0005] The present invention provides a digital assembly device and assembly method for pressing a plurality of planar optical element pressing blocks. Aiming at the assembly of pressing blocks of multi-planar optical elements, the present invention realizes non-contact precision measurement of the pressing amount of pressing blocks, automatic calculation of the fitting amount of pressing block pressing surfaces, and high-precision repeated positioning and installation of pressing blocks, so as to solve the problem in the prior art that the position accuracy of pressing block measurement and formal assembly process affects the pressing amount accuracy.

[0006] A digital assembly device for pressing a plurality of planar optical element blocks of the present invention adopts the following technical solution, including: a displacement detection module, a detection bracket, a detection reference tooling and a computer; The displacement detection module is used to measure the installation height deviation value of two optical elements on the optical element structure relative to the optical element structure, and to detect the processing error value of the pressing surface of the pressing block of the optical element structure; The detection bracket is used to simulate the theoretical relative position height of the pressing surface of the pressing block of the optical element structure; The detection reference fixture is used to calibrate the installation accuracy of the displacement detection module on the detection bracket; The computer is used to obtain the matching dimensions of the installation surface and each pressing surface of the pressing block according to the installation height deviation value and the processing error value.

[0007] Preferably, the detection bracket includes: a bracket assembly surface, two bracket calibration reference surfaces and two sensor first mounting surfaces; the spatial angle of the assembly surface of the detection bracket relative to the two calibration reference surfaces is the same as the spatial angle of the mounting surface of the pressure block relative to the two pressing surfaces of the pressure block, and the two calibration reference surfaces of the detection bracket correspond one-to-one and are parallel to the two sensor first mounting surfaces; the two sensor first mounting surfaces of the detection bracket are used to cooperate with the displacement detection module.

[0008] Preferably, the detection reference tooling includes: a tooling assembly surface, two tooling calibration reference surfaces and two sensor second mounting surfaces; the spatial angle of the tooling assembly surface relative to the two tooling calibration reference surfaces is the same as the spatial angle of the mounting surface of the pressure block relative to the two pressing surfaces of the pressure block, and the two tooling calibration reference surfaces correspond to and are parallel to the two sensor second mounting surfaces one by one; wherein the two tooling calibration reference surfaces of the detection reference tooling correspond to and cooperate with the two bracket calibration reference surfaces of the detection bracket.

[0009] Preferably, the displacement detection module comprises: two laser coaxial displacement meters, wherein the laser coaxial displacement meter is used to be installed on the first sensor mounting surface of the detection bracket or on the second sensor mounting surface.

[0010] Preferably, the mounting surface of the pressing block and the bracket assembly surface of the detection bracket are both used to cooperate with the tool assembly surface of the detection reference tool.

[0011] A digital assembly method for pressing a plurality of planar optical element blocks adopts the following technical scheme, specifically including: Install the detection bracket on the detection reference fixture, and install two laser coaxial displacement meters on the detection bracket accordingly; use the laser coaxial displacement meters to measure the fixture calibration reference surfaces corresponding to the detection reference fixture respectively, and calibrate the corresponding laser coaxial displacement meters to measure the assembly height zero position of the optical element of the optical element structural part according to the measurement results; Installing a detection bracket equipped with a laser coaxial displacement meter on the optical element structure; using the laser coaxial displacement meter to respectively measure the installation height deviation values ​​of the two optical elements relative to the optical element structure; The detection bracket is installed on the tooling assembly surface of the detection reference tooling, and two laser coaxial displacement meters are installed on the second sensor installation surface corresponding to the detection reference tooling; the laser coaxial displacement meters are used to measure the bracket calibration reference surfaces corresponding to the detection brackets respectively, and the laser coaxial displacement meters are calibrated according to the measurement results to measure the measurement zero position of the height processing error of the pressing surface corresponding to the pressing block; The pressing block is installed on the detection reference fixture; two laser coaxial displacement meters are used to measure the machining errors corresponding to the two pressing surfaces of the pressing block; According to the two installation height deviation values ​​and the two processing error values, the repair dimensions corresponding to the pressing surface and the installation surface of the pressing block are obtained, and the pressing block is repaired according to the repair dimensions; The repaired pressing block is installed on the optical element structure.

[0012] Preferably, the step of obtaining the repair dimensions corresponding to the pressing surface and the installation surface of the pressing block is: Calculate the matching errors between the two pressing surfaces of the pressing block and the corresponding optical element according to the two installation height deviation values ​​and the two processing error values; According to the spatial angle of the surface of the optical element relative to the mounting surface of the pressing block of the optical element structure, a repair coefficient corresponding to the pressing surface of the pressing block is obtained; According to the size of the two matching errors, determine the matching surface and matching amount of the pressing block.

[0013] Preferably, the matching error expression between the two pressed surfaces and the corresponding optical elements is: ΔH1=Δh11+Δh12, ΔH2=Δh21+Δh22 Wherein, ΔH1 is the matching error between the first pressing surface and the first optical element; ΔH2 is the matching error between the second pressing surface and the second optical element; Δh11 is the installation height deviation value of the first optical element relative to the optical element structure; Δh12 is the installation height deviation value of the second optical element relative to the optical element structure; Δh21 is the processing error of the first pressing surface of the pressing block; Δh22 is the processing error of the second pressing surface of the pressing block; The expression of the repair coefficient corresponding to the pressing surface of the pressing block is: D1= , D2=

[0014] Wherein, D1 represents the grinding coefficient of the first pressing surface of the pressing block; D2 represents the grinding coefficient of the second pressing surface of the pressing block; represents the spatial angle of the surface of the first optical element relative to the pressing block mounting surface of the optical element structure; It represents the spatial angle of the surface of the second optical element relative to the pressing block mounting surface of the optical element structure.

[0015] Preferably, the steps of determining the trimming surface and trimming amount of the pressing block are: If ΔH1≤0, ΔH2≤0, then the first pressing surface adjustment amount H1 of the pressing block corresponding to the first optical element is -ΔH1, and the second pressing surface adjustment amount H2 of the pressing block corresponding to the second optical element is -ΔH2; If ΔH1≤0, ΔH2>0, then the adjustment amount of the mounting surface of the pressing block H3=ΔH2 / D2, and the adjustment amount of the first pressing surface of the pressing block corresponding to the first optical element H1=ΔH2*D1 / D2-ΔH1; If ΔH1>0, ΔH2≤0, then the adjustment amount of the mounting surface of the pressing block H3=ΔH1 / D1, and the adjustment amount of the second pressing surface of the pressing block corresponding to the second optical element H2=ΔH1*D2 / D1-ΔH2; If ΔH1>0, ΔH2>0, ΔH1 / D1≥ΔH2 / D2, then the adjustment amount H3 of the mounting surface of the pressing block = ΔH1 / D1, and the adjustment amount H2 of the second pressing surface of the pressing block corresponding to the second optical element = ΔH1*D2 / D1-ΔH2; If ΔH1>0, ΔH2>0, ΔH1 / D1<ΔH2 / D2, then the adjustment amount H3 of the mounting surface of the pressing block = ΔH2 / D2, and the adjustment amount H1 of the first pressing surface of the pressing block corresponding to the first optical element = ΔH2*D1 / D2-ΔH1.

[0016] Preferably, a rubber pad is arranged on the pressing surface of the repaired pressing block, and the rubber pad of the pressing block mounted on the optical element structure presses the corresponding optical element.

[0017] The beneficial effects of the present invention are: 1. The displacement detection module is used to measure the installation height deviation of the optical element relative to the optical element structure. On the one hand, it can avoid the contact measurement method from interfering with the parts or scratching the optical element. On the other hand, it can effectively measure the surface position of the optical element and prevent the influence of high transmittance or high reflectivity on the measurement results, thereby improving the subsequent assembly accuracy.

[0018] 2. Both the detection bracket and the detection reference fixture have two calibration reference surfaces and two sensor mounting surfaces. Before the laser coaxial displacement meter is installed on the detection bracket or the detection reference fixture for measurement, the detection bracket and the detection reference fixture can be used to complete the zero position calibration of the laser coaxial displacement meter, with small calibration error and low manufacturing cost; two pin screws cooperate with the mounting pin holes for installing the detection bracket and the pressure block, so that the detection bracket and the pressure block can be quickly and accurately repeatedly installed on the detection reference fixture or the optical element structure in a compact space, ensuring the accuracy of the pressure block pressure load; a computer is used to collect laser coaxial displacement measurement data and automatically determine the pressure block repair surface and repair amount, without the need for manual repeated calculation, trial repair, trial installation, and re-measurement, thereby improving the efficiency and quality of installation and adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of a digital assembly device for pressing a plurality of planar optical element pressing blocks according to the present invention; Figure 2 is a schematic structural diagram of an optical element structural component in an embodiment of the present invention; Figure 3 A schematic diagram of a bracket assembly surface of a detection bracket, two bracket calibration reference surfaces, and two sensor first mounting surfaces; Figure 4 A schematic diagram of a tooling assembly surface for testing a reference tooling, two tooling calibration reference surfaces, and two sensor second mounting surfaces; Figure 5 It is a schematic diagram of the installation of the pressing block and the optical element structure; Figure 6 The schematic diagram of calibrating the zero position of the optical parts assembly height for two laser coaxial displacement meters and a detection bracket installed on a measuring and detection reference fixture; Figure 7 It is an assembly schematic diagram of two laser coaxial displacement meters and a detection bracket installed on an optical element structure to measure the installation height deviation values ​​of two optical elements relative to the optical element structure; Figure 8 An assembly diagram for measuring the zero position of the machining error of each pressing surface height of the pressing block by calibrating two laser coaxial displacement meters using a detection bracket and a detection reference fixture; Fig. 9 The schematic diagram of the assembly of using two laser coaxial displacement meters to measure the machining errors of two pressing surfaces of the pressing block; Fig.10 The schematic diagram of the assembly of the pressing block installed on the optical element structure.

[0021] In the figure: 1. first laser coaxial displacement meter; 2. second laser coaxial displacement meter; 3. detection bracket; 4. detection reference tooling; 5. pin screw; 6. computer; 7. optical element structural part; 8. first optical element; 9. second optical element; 10. pressure block; 11. rubber pad. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] An embodiment of a digital assembly device for pressing a plurality of planar optical element pressing blocks according to the present invention is as follows: Figure 1 and 2 As shown, it includes: a displacement detection module, a detection bracket 3, a detection reference tool 4 and a computer 6; the displacement detection module includes: a first laser coaxial displacement meter 1 and a second laser coaxial displacement meter 2, the displacement detection module is used to measure the installation height deviation value of two optical elements on the optical element structure 7 relative to the optical element structure 7, and detect the processing error value of the pressing surface of the pressing block 10 of the optical element structure 7; the detection bracket 3 is used to simulate the theoretical relative position height of the pressing surface of the pressing block 10 of the optical element structure 7; the detection reference tool 4 is used to calibrate the installation accuracy of the displacement detection module on the detection bracket 3; the computer 6 is used to obtain the installation surface and the matching dimensions of each pressing surface of the pressing block 10 according to the installation height deviation value and the processing error value.

[0024] like Figure 3 As shown, the detection bracket 3 of this embodiment includes: a bracket assembly surface, two bracket calibration reference surfaces and two sensor first mounting surfaces; the spatial angle of the assembly surface of the detection bracket 3 relative to the two calibration reference surfaces is the same as the spatial angle of the mounting surface of the pressure block 10 relative to the two pressing surfaces of the pressure block 10, the two calibration reference surfaces of the detection bracket 3 correspond to the two sensor first mounting surfaces one by one and are parallel; the two sensor first mounting surfaces of the detection bracket 3 are used to cooperate with the displacement detection module.

[0025] like Figure 4As shown, the detection reference tooling 4 of this embodiment includes: a tooling assembly surface, two tooling calibration reference surfaces and two sensor second mounting surfaces; the spatial angle of the tooling assembly surface relative to the two tooling calibration reference surfaces is the same as the spatial angle of the mounting surface of the pressure block 10 relative to the two pressing surfaces of the pressure block 10, and the two tooling calibration reference surfaces correspond to and are parallel to the two sensor second mounting surfaces; the two bracket calibration reference surfaces of the detection reference tooling 4 and the bracket calibration reference surface of the detection bracket 3 are matched to calibrate the first laser coaxial displacement meter 1 and calibrate the height measured by the second laser coaxial displacement meter 2; wherein, the two tooling calibration reference surfaces of the detection reference tooling 4 correspond to the two bracket calibration reference surfaces of the detection bracket 3; wherein, the first laser coaxial displacement meter 1 and the second laser coaxial displacement meter 2 are used to be installed on the two sensor first mounting surfaces corresponding to the detection bracket 3 or on the two second sensor mounting surfaces corresponding to the detection reference tooling 4.

[0026] Specifically, the mounting surface of the pressure block 10 and the bracket assembly surface of the detection bracket 3 are used to cooperate with the tooling assembly surface of the detection reference tooling 4. In this embodiment, the pin screw 5 is used to cooperate with the pin hole on the detection bracket 3 or the pressure block 10 to precisely and repeatedly install the detection bracket 3 and the pressure block 10 on the detection reference tooling 4 or the optical element structure 7.

[0027] An embodiment of a digital assembly method for pressing a plurality of planar optical element blocks comprises the following specific steps: Step 1, calibrating the laser coaxial displacement meter to measure the zero position of the assembly height of the optical element of the optical element structural member 7; Step 11: Install the detection bracket and laser coaxial displacement meter: like Figure 6 As shown, the detection bracket 3 is installed on the detection reference fixture 4 by two pin screws 5, that is, the bracket assembly surface of the detection bracket 3 is matched with the fixture assembly surface of the detection reference fixture 4, and the bracket calibration reference surface of the detection bracket 3 is matched with the fixture calibration reference surface of the detection reference fixture 4; then, the laser coaxial displacement meter is installed on the detection bracket 3, that is, the first laser coaxial displacement meter 1 and the second laser coaxial displacement meter 2 are correspondingly installed on the first sensor mounting surface of the detection bracket 3.

[0028] Step 12, calibrate the zero position of the assembly height; Use the first laser coaxial displacement meter 1 and the second laser coaxial displacement meter 2 to respectively measure the tooling calibration reference surface corresponding to the detection reference tooling 4, and transmit the measurement results to the computer 6. The computer 6 calibrates the first laser coaxial displacement meter 1 to measure the zero position of the assembly height of the first optical element 8 according to the measurement results, and calibrates the second laser coaxial displacement meter 2 to measure the zero position of the assembly height of the second optical element 9.

[0029] Step 2, measuring the installation height deviation values ​​of the two optical elements relative to the optical element structure; like Figure 7 As shown, the detection bracket 3 equipped with the first laser coaxial displacement meter 1 and the second laser coaxial displacement meter 2 is installed on the optical element structure 7 through two pin screws 5, that is, the bracket assembly surface of the detection bracket 3 is matched with the assembly surface of the optical element structure 7, and the bracket calibration reference surface of the detection bracket 3 is matched with the contact surface of the pressure block of the optical element structure 7. Then, the first laser coaxial displacement meter 1 is used to measure the installation height deviation value Δh11 of the first optical element 8 on the optical element structure 7 relative to the optical element structure 7, and the second laser coaxial displacement meter 2 is used to measure the installation height deviation value Δh21 of the second optical element 9 on the optical element structure 7 relative to the optical element structure 7, and the installation height deviation value is transmitted to the computer 6.

[0030] Step 3, calibrating the laser coaxial displacement meter to measure the measurement zero position of the height processing error of the pressing surface corresponding to the pressing block; Remove the first laser coaxial displacement meter 1, the second laser coaxial displacement meter 2, and the detection bracket 3; install the detection bracket 3 on the fixture assembly surface of the detection reference fixture 4 through two pin screws 5, such as Figure 8 As shown, the first laser coaxial displacement meter 1 and the second laser coaxial displacement meter 2 are respectively installed on the two sensor second installation surfaces corresponding to the detection reference fixture 4; the first laser coaxial displacement meter 1 and the second laser coaxial displacement meter 2 are used to respectively measure the two bracket calibration reference surfaces corresponding to the detection bracket 3, and the measurement results are transmitted to the computer 6; the computer 6 calibrates the first laser coaxial displacement meter 1, the second laser coaxial displacement meter 2, and the detection bracket 3 to measure the measurement zero position of the height processing error of each pressing surface of the pressing block 10 according to the measurement results; Step 4, measuring the machining errors of the two pressing surfaces of the pressing block; Remove the detection bracket 3 and install the pressing block 10 on the detection reference fixture 4 through two pin screws 5; Fig. 9 As shown, the first laser coaxial displacement meter 1 is used to measure the processing error Δh12 of the first two pressing surfaces of the pressing block 10, and the second laser coaxial displacement meter 2 is used to measure the processing error Δh22 of the second pressing surface of the pressing block 10, and the two processing error data are transmitted to the computer 6.

[0031] Step 5, obtaining the trimming dimensions of the pressing surface or the mounting surface of the pressing block and performing trimming; Step 51, obtaining the trimming dimensions of the pressing surface or the mounting surface of the pressing block; Specifically, the matching errors between the two pressing surfaces of the pressing block 10 and the corresponding optical elements are calculated according to the two installation height deviation values ​​and the two processing error values; the matching coefficient corresponding to the pressing surface of the pressing block is obtained according to the spatial angle of the surface of the optical element relative to the pressing block mounting surface of the optical element structural component 7; and the matching surface and matching amount of the pressing block 10 are determined according to the size of the two matching errors.

[0032] Among them, the matching error expression between the two pressed surfaces and the corresponding optical elements is: ΔH1=Δh11+Δh12, ΔH2=Δh21+Δh22 Wherein, ΔH1 is the matching error between the first pressing surface of the pressing block and the first optical element; ΔH2 is the matching error between the second pressing surface of the pressing block and the second optical element; Δh11 is the installation height deviation value of the first optical element relative to the optical element structure; Δh12 is the installation height deviation value of the second optical element relative to the optical element structure; Δh21 is the processing error of the first pressing surface of the pressing block; Δh22 is the processing error of the second pressing surface of the pressing block; Among them, the expression of the repair coefficient corresponding to the pressing surface of the pressing block is: D1= , D2=

[0033] Wherein, D1 represents the grinding coefficient of the first pressing surface of the pressing block; D2 represents the grinding coefficient of the second pressing surface of the pressing block; Figure 5 As shown, represents the spatial angle of the surface of the first optical element relative to the pressing block mounting surface of the optical element structure; It represents the spatial angle of the surface of the second optical element relative to the pressing block mounting surface of the optical element structure.

[0034] Wherein, the steps of determining the trimming surface and trimming amount of the pressing block are as follows: if ΔH1≤0, ΔH2≤0, then the trimming amount H1 of the first pressing surface of the pressing block 10 corresponding to the first optical element 8 is -ΔH1, and the trimming amount H2 of the second pressing surface of the pressing block 10 corresponding to the second optical element 9 is -ΔH2; if ΔH1≤0, ΔH2>0, then the trimming amount H3 of the mounting surface of the pressing block 10 is ΔH2 / D2, and the trimming amount H1 of the first pressing surface of the pressing block 10 corresponding to the first optical element 8 is ΔH2*D1 / D2-ΔH1; if ΔH1>0, ΔH2≤0, then the trimming amount H3 of the mounting surface of the pressing block 10 is ΔH1 / D1, and the trimming amount H2 of the second optical element 9 is -ΔH2; 9, the second pressing surface repair amount H2=ΔH1*D2 / D1-ΔH2 of the pressing block 10 corresponding to the second optical element 9; if ΔH1>0, ΔH2>0, ΔH1 / D1≥ΔH2 / D2, then the mounting surface repair amount H3=ΔH1 / D1 of the pressing block 10, and the second pressing surface repair amount H2=ΔH1*D2 / D1-ΔH2 of the pressing block 10 corresponding to the second optical element 9; if ΔH1>0, ΔH2>0, ΔH1 / D1<ΔH2 / D2, then the mounting surface repair amount H3=ΔH2 / D2 of the pressing block 10, and the first pressing surface repair amount H1=ΔH2*D1 / D2-ΔH1 of the pressing block 10 corresponding to the first optical element 8.

[0035] Step 52, adjusting the size of the briquette; The block is repaired according to the repair surface and repair amount of the block, such as Fig.10 As shown, after the repair is completed, rubber pads 11 are installed on each pressing surface of the pressing block 10.

[0036] Step 6, assembling the optical element structural parts and the pressing block; like Figure 5 As shown, the repaired pressing block 10 is installed on the optical element structure 7 through two pin screws 5, that is, the assembly surface of the pressing block 10 and the assembly surface of the optical element structure 7 are matched, and the pressing surface of the pressing block 10 and the pressing block contact surface on the optical element structure 7 are matched and installed, and during the installation process, the rubber pad 11 presses the first optical element 8 and the second optical element 9; finally, one pin screw 5 is removed, and the mounting screw of the pressing block 10 is fastened to the optical element structure 7 through the pin hole of the pin screw 5, and the other pin screw 5 is removed, and the mounting screw of the pressing block 10 is installed through the pin hole of the pin screw 5, so as to realize the assembly of the optical element structure 7 and the pressing block 10. The specific assembled structure is shown in FIG. Fig.10 shown.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A digital assembly device for pressing a plurality of planar optical element blocks, characterized in that: include: Displacement detection module, detection bracket, detection reference tooling and computer; The displacement detection module is used to measure the installation height deviation value of two optical elements on the optical element structure relative to the optical element structure, and to detect the processing error value of the pressing surface of the pressing block of the optical element structure; The detection bracket is used to simulate the theoretical relative position height of the pressing surface of the pressing block of the optical element structure; The detection reference fixture is used to calibrate the installation accuracy of the displacement detection module on the detection bracket; The computer is used to obtain the matching dimensions of the installation surface and each pressing surface of the pressing block according to the installation height deviation value and the processing error value.

2. A digital assembly device for pressing a plurality of planar optical element blocks according to claim 1, characterized in that: The detection bracket includes: a bracket assembly surface, two bracket calibration reference surfaces and two sensor first mounting surfaces; the spatial angle of the assembly surface of the detection bracket relative to the two calibration reference surfaces is the same as the spatial angle of the mounting surface of the pressure block relative to the two pressing surfaces of the pressure block, the two calibration reference surfaces of the detection bracket correspond to the two sensor first mounting surfaces one by one and are parallel; the two sensor first mounting surfaces of the detection bracket are used to cooperate with the displacement detection module.

3. A digital assembly device for pressing a plurality of planar optical element blocks according to claim 2, characterized in that: The detection reference tooling includes: a tooling assembly surface, two tooling calibration reference surfaces and two sensor second mounting surfaces; the spatial angle of the tooling assembly surface relative to the two tooling calibration reference surfaces is the same as the spatial angle of the mounting surface of the pressure block relative to the two pressing surfaces of the pressure block, and the two tooling calibration reference surfaces correspond to and are parallel to the two sensor second mounting surfaces one by one; wherein, the two tooling calibration reference surfaces of the detection reference tooling correspond to and cooperate with the two bracket calibration reference surfaces of the detection bracket.

4. A digital assembly device for pressing a plurality of planar optical element blocks according to claim 3, characterized in that: The displacement detection module includes: two laser coaxial displacement meters, wherein the laser coaxial displacement meter is used to be installed on the first sensor installation surface of the detection bracket or installed on the second sensor installation surface.

5. The digital assembly device for pressing a plurality of planar optical element blocks according to claim 3, characterized in that: The mounting surface of the pressure block and the bracket assembly surface of the detection bracket are both used to cooperate with the tooling assembly surface of the detection reference tooling.

6. A digital assembly method for pressing a plurality of planar optical element blocks, characterized in that: include: Install the detection bracket on the detection reference fixture, and install two laser coaxial displacement meters on the detection bracket accordingly; The laser coaxial displacement meter is used to measure the tooling calibration reference surface corresponding to the detection reference tooling respectively, and the corresponding laser coaxial displacement meter is calibrated according to the measurement result to measure the assembly height zero position of the optical element of the optical element structural part; Installing a detection bracket equipped with a laser coaxial displacement meter on the optical element structure; using the laser coaxial displacement meter to respectively measure the installation height deviation values ​​of the two optical elements relative to the optical element structure; The detection bracket is installed on the tooling assembly surface of the detection reference tooling, and two laser coaxial displacement meters are installed on the second sensor installation surface corresponding to the detection reference tooling; the laser coaxial displacement meters are used to measure the bracket calibration reference surfaces corresponding to the detection brackets respectively, and the laser coaxial displacement meters are calibrated according to the measurement results to measure the measurement zero position of the height processing error of the pressing surface corresponding to the pressing block; The pressing block is installed on the detection reference fixture; two laser coaxial displacement meters are used to measure the machining errors corresponding to the two pressing surfaces of the pressing block; According to the two installation height deviation values ​​and the two processing error values, the repair dimensions corresponding to the pressing surface and the installation surface of the pressing block are obtained, and the pressing block is repaired according to the repair dimensions; The repaired pressing block is installed on the optical element structure.

7. A digital assembly device for pressing a plurality of planar optical element blocks according to claim 6, characterized in that: The steps for obtaining the repair dimensions corresponding to the pressing surface and the installation surface of the pressing block are as follows: Calculate the matching errors between the two pressing surfaces of the pressing block and the corresponding optical element according to the two installation height deviation values ​​and the two processing error values; According to the spatial angle of the surface of the optical element relative to the mounting surface of the pressing block of the optical element structure, a repair coefficient corresponding to the pressing surface of the pressing block is obtained; According to the size of the two matching errors, determine the matching surface and matching amount of the pressing block.

8. A digital assembly device and assembly method for pressing a plurality of planar optical element blocks according to claim 6, characterized in that: The matching error expression between the two pressed surfaces and the corresponding optical elements is: ΔH1=Δh11+Δh12, ΔH2=Δh21+Δh22 Wherein, ΔH1 is the matching error between the first pressing surface and the first optical element; ΔH2 is the matching error between the second pressing surface and the second optical element; Δh11 is the installation height deviation value of the first optical element relative to the optical element structure; Δh12 is the installation height deviation value of the second optical element relative to the optical element structure; Δh21 is the processing error of the first pressing surface of the pressing block; Δh22 is the processing error of the second pressing surface of the pressing block; The expression of the repair coefficient corresponding to the pressing surface of the pressing block is: D1= ,D2= Wherein, D1 represents the grinding coefficient of the first pressing surface of the pressing block; D2 represents the grinding coefficient of the second pressing surface of the pressing block; represents the spatial angle of the surface of the first optical element relative to the pressing block mounting surface of the optical element structure; It represents the spatial angle of the surface of the second optical element relative to the pressing block mounting surface of the optical element structure.

9. A digital assembly device and assembly method for pressing a plurality of planar optical element blocks according to claim 8, characterized in that: The steps to determine the trimming surface and trimming amount of the briquette are: If ΔH1≤0, ΔH2≤0, then the first pressing surface adjustment amount H1 of the pressing block corresponding to the first optical element is -ΔH1, and the second pressing surface adjustment amount H2 of the pressing block corresponding to the second optical element is -ΔH2; If ΔH1≤0, ΔH2>0, then the adjustment amount of the mounting surface of the pressing block H3=ΔH2 / D2, and the adjustment amount of the first pressing surface of the pressing block corresponding to the first optical element H1=ΔH2*D1 / D2-ΔH1; If ΔH1>0, ΔH2≤0, then the adjustment amount of the mounting surface of the pressing block H3=ΔH1 / D1, and the adjustment amount of the second pressing surface of the pressing block corresponding to the second optical element H2=ΔH1*D2 / D1-ΔH2; If ΔH1>0, ΔH2>0, ΔH1 / D1≥ΔH2 / D2, then the adjustment amount H3 of the mounting surface of the pressing block = ΔH1 / D1, and the adjustment amount H2 of the second pressing surface of the pressing block corresponding to the second optical element = ΔH1*D2 / D1-ΔH2; If ΔH1>0, ΔH2>0, ΔH1 / D1<ΔH2 / D2, then the adjustment amount H3 of the mounting surface of the pressing block = ΔH2 / D2, and the adjustment amount H1 of the first pressing surface of the pressing block corresponding to the first optical element = ΔH2*D1 / D2-ΔH1.

10. A digital assembly device and assembly method for pressing a plurality of planar optical element blocks according to claim 6, characterized in that: A rubber pad is arranged on the pressing surface of the repaired pressing block, and the rubber pad of the pressing block mounted on the optical element structural member is made to press the corresponding optical element.

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