CN115220139A - Optical prism manufacturing control method based on computer image recognition - Google Patents

Abstract

The invention provides an optical prism manufacturing control method based on computer image recognition, which comprises the steps of cutting an optical glass piece into an optical blank by laser and polishing and grinding the optical blank into an optical flat piece; splicing and assembling the optical flat plate pieces to obtain an optical prism, shooting and analyzing an optical prism image, judging whether the optical prism has an assembly defect and a surface processing defect, and replacing the optical flat plate pieces; after the optical flat plate pieces are replaced, all the optical flat plate pieces of the optical prism are bonded and fixed, and the optical prism is installed in the optical equipment to be subjected to optical path alignment adjustment, so that the quality of the optical prism can be monitored in real time in the production and manufacturing process, and the optical flat plate pieces can be replaced for the optical prism with defects in time, so that the production yield and the processing and production reliability and efficiency of the optical prism are improved.

Description

Optical prism manufacturing control method based on computer image recognition

technical field

The invention relates to the technical field of optical prism processing, in particular to an optical prism manufacturing control method based on computer image recognition.

Background technique

Optical prisms are used to split or deflect light, and are usually formed by splicing and assembling several optical plates. The relative assembly orientation between different optical plates in the optical prism and the smoothness of the optical surface of the optical plate itself directly affect the optical performance of the optical prism. At present, the processing and manufacturing of optical prisms are all operated by CNC machine tools. Although CNC machine tools can realize the streamlined production of optical prisms and improve the processing and production efficiency of optical prisms, they cannot detect the assembly defects and surface processing defects of different optical plates in the optical prisms in real time during the processing and production process. quality control and cannot effectively improve the production yield of optical prisms.

SUMMARY OF THE INVENTION

In view of the defects existing in the prior art, the present invention provides a control method for manufacturing an optical prism based on computer image recognition, which comprises laser cutting an optical glass piece to form an optical embryo body, and polishing and grinding the optical embryo body to form an optical flat plate; The optical prisms are obtained by splicing and assembling the flat parts, photographing and analyzing the images of the optical prisms, judging whether the optical prisms have assembly defects and surface processing defects, and replacing the optical flat parts; when the replacement of the optical flat parts is completed, all optical The flat parts are bonded and fixed, and the optical prisms are installed in the optical equipment to adjust the optical path alignment, so that the quality of the optical prisms can be monitored in real time during the manufacturing process, and the defective optical prisms can be replaced in time for the optical flat parts. , so as to improve the production yield of optical prisms and the reliability and efficiency of processing and production.

The present invention provides an optical prism manufacturing control method based on computer image recognition, which comprises the following steps:

Step S1, laser cutting the optical glass piece to obtain an optical body of a predetermined shape and size; then install the optical body in a six-degree-of-freedom device, and polish and grind the optical body to obtain an optical flat plate ;

Step S2, splicing and assembling several optical flat parts to obtain an optical prism, and photographing the optical prism to obtain an optical prism image; analyzing the optical prism image to determine whether the optical prism has assembly defects and surface processing defects; Then, according to the judgment result, replace the corresponding optical flat panel;

In step S3, after the replacement of the optical flat parts is completed, all the optical flat parts of the optical prism are bonded and fixed; and then the optical prism is installed in an optical device to adjust the optical path alignment.

Further, in the step S1, laser cutting the optical glass piece to obtain an optical embryo with a predetermined shape and size specifically includes:

Fix the optical glass piece on the optical table, and obtain the original shape and size of the optical glass piece on the X-axis, Y-axis, and Z-axis of the three-dimensional space;

Comparing the predetermined shape and size with the original shape and size, and determining the cutting volume corresponding to the laser cutting of the optical glass piece;

The irradiation duration and irradiation direction of the cutting laser beam on the optical glass piece are adjusted according to the cutting length of the cutting volume on the X-axis, Y-axis, and Z-axis of the three-dimensional space and the direction of the cutting boundary line.

Further, in the step S1, the optical embryo body is installed in a six-degree-of-freedom device, and the optical embryo body is polished and ground to obtain an optical flat piece, which specifically includes:

The optical embryo body is installed in a six-degree-of-freedom device, and according to the relative pose relationship between the optical embryo body and the polishing grinding head, the distance between the optical surface to be polished and the polishing grinding head of the optical embryo body is determined. Alignment deviation angle;

According to the alignment deviation angle, the 6-DOF device is instructed to adjust the 6-DOF orientation of the optical blank, so that the adjusted alignment deviation angle is within the preset deviation angle threshold range, so as to adjust the optical blank. The body is polished and ground to obtain optical flat parts.

Further, in the step S2, splicing and assembling several optical flat parts to obtain an optical prism, and photographing the optical prism to obtain an optical prism image specifically includes:

According to the preset optical prism shape model, the optical prisms are obtained by splicing and assembling several optical flat pieces in a non-parallel manner;

Scanning and photographing the optical prism to obtain a panoramic image of the optical prism, and then performing Kalman filtering processing and pixel edge sharpening processing on the panoramic image of the optical prism.

Further, in the step S2, the optical prism image is analyzed to determine whether the optical prism has assembly defects and surface processing defects; and then according to the judgment result, the replacement of the corresponding optical flat piece specifically includes:

Recognize and obtain the main cross-sectional image of the optical prism from the panoramic image of the optical prism, analyze the main cross-sectional image, and determine whether there is an assembly defect between the optical flat parts of the optical prism;

It is recognized from the panoramic image of the optical prism that the side surface of the optical prism corresponds to the light incident state and the light exit state, and then according to the light incident state and the light exit state, it is determined whether there is surface processing on the side surface of the optical prism. defect;

According to the judgment results of the assembly defect and the surface processing defect, it is determined whether it is necessary, and the corresponding optical flat plate is replaced.

Further, in the step S2, the main cross-sectional image of the optical prism is obtained by identifying the panoramic image of the optical prism, the main cross-sectional image is analyzed, and it is determined whether there is an assembly defect between the optical flat parts of the optical prism. include:

Taking the lower left vertex of the panoramic image of the optical prism as the coordinate origin, the lower boundary is the X-axis to the right, and the left boundary is the Y-axis upward to establish a plane rectangular coordinate system, and the unit lengths on the X-axis and the Y-axis respectively correspond to the optical The distance between two adjacent horizontal pixels and the distance between two adjacent vertical pixels in the prism panorama image;

Using the following formula (1), according to the coordinates of each vertex in the main section image, determine whether there is an assembly defect on the side of the optical prism between the optical flat parts of the optical prism,

表示将i的值从1取到n求取得到的众数；In the above formula (1), S(i) represents the length value of the i-th side image in the main cross-sectional image; [x(i), y(i)] represents the i-th side image in the main cross-sectional image The coordinates of the intersection vertex of the side face and the i-1th side face, if i=1, it is the intersection vertex coordinate of the 1st side face and the nth side face; n represents the number of sides of the optical prism, that is, the optical prism is n Prism; W(i) represents the judgment value of assembly defects on the i-th side of the optical prism between the optical flat parts of the optical prism;

Indicates the mode obtained by taking the value of i from 1 to n;

If W(i)=0, it means that there is no assembly defect on the i-th side of the optical prism between the optical flat plates of the optical prism;

If W(i)=1, it means that there is an assembly defect on the i-th side of the optical prism between the optical flat plates of the optical prism;

In the step S2, according to the light incident state and the light exit state, judging whether the side surface of the optical prism has surface processing defects specifically includes:

Using the following formula (2), according to the light incident state and the light exit state, determine whether there is a surface processing defect on the side of the optical prism,

In the above formula (2), P(i) represents the surface processing defect judgment value of the i-th side of the optical prism; [X _in (i), Y _in (i)] represents the light from the i-th side of the optical prism. The corresponding incident light direction vector when incident; [X _out (i'), Y _out (i')] represents the corresponding outgoing light direction vector when the light is incident from the ith side of the optical prism; [X _out (i), Y _out (i)] represents the outgoing light direction vector when the light exits from the ith side of the optical prism; [X _in (i″), Y _in (i″)] represents the ray exits from the ith side of the optical prism The corresponding incident light direction vector; θ ₀ represents the deflection angle of the incident direction and the output direction after the preset light is incident on the positive n optical prism; ∧ represents the logical relationship and; ∨ represents the logical relationship or;

If P(i)=0, it means that there is no surface processing defect on the i-th side surface of the optical prism;

If P(i)=1, it means that the i-th side surface of the optical prism has surface processing defects;

In the step S2, according to the judgment results of the assembly defect and the surface processing defect, determining whether the corresponding optical flat panel needs to be replaced specifically includes:

Using the following formula (3), according to the judgment results of the assembly defect and the surface processing defect, it is determined whether the corresponding optical flat panel needs to be replaced,

In the above formula (3), K represents the replacement judgment value of the optical plate of the optical prism; when K=0, it means that the optical plate of the optical prism does not need to be replaced; when K=1, it means that the optical plate needs to be replaced. Replace the optical plate parts of the prism, and replace all the optical plate parts of the optical prism whose side surfaces satisfy [W(i)+P(i)]≠0.

Further, in the step S3, after completing the replacement of the optical flat parts, bonding and fixing all the optical flat parts of the optical prism specifically includes:

After the replacement of the optical flat parts is completed, all adjacent optical flat parts in the optical prism are aligned along the corresponding adjoining boundary lines, and then adhesive is applied to the adjoining boundary lines, so as to realize the matching Adhesive fixation of adjacent optical plate pieces.

Further, in the step S3, installing the optical prism into an optical device to perform optical path alignment adjustment specifically includes:

After the optical prism is installed in the optical device, the orientation of the optical prism inside the optical device is adjusted so that the main optical axis of the optical prism coincides with the optical axis of the optical device.

Compared with the prior art, the optical prism manufacturing control method based on computer image recognition laser-cuts an optical glass piece to form an optical embryo, and polishes and grinds the optical embryo to form an optical flat piece; and then splices and assembles several optical flat pieces. Obtain the optical prism, take and analyze the image of the optical prism, judge whether the optical prism has assembly defects and surface processing defects, and replace the optical flat parts; when the replacement of the optical flat parts is completed, all the optical flat parts of the optical prism are bonded. Fix, and install the optical prism into the optical equipment to adjust the optical path alignment, so that the quality of the optical prism can be monitored in real time during the manufacturing process, and the optical prism with defects can be replaced in time to improve the optical prism. production yield and processing reliability and efficiency.

Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description, claims, and drawings.

The technical solutions of the present invention will be further described in detail below through the accompanying drawings and embodiments.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic flowchart of a method for manufacturing and controlling an optical prism based on computer image recognition provided by the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Referring to FIG. 1 , it is a schematic flowchart of a method for manufacturing and controlling an optical prism based on computer image recognition provided by an embodiment of the present invention. The optical prism manufacturing control method based on computer image recognition includes the following steps:

Step S1, laser cutting the optical glass piece to obtain an optical body of a predetermined shape and size; then install the optical body in a six-degree-of-freedom device, and polish and grind the optical body to obtain an optical flat plate;

Step S2, splicing and assembling several optical flat parts to obtain an optical prism, and photographing the optical prism to obtain an optical prism image; analyzing the optical prism image, and judging whether the optical prism has assembly defects and surface processing defects; Judging the result, replace the corresponding optical flat panel;

In step S3, after the replacement of the optical flat piece is completed, all the optical flat pieces of the optical prism are bonded and fixed; then the optical prism is installed in an optical device to adjust the optical path alignment.

The beneficial effects of the above-mentioned technical solutions are: the optical prism manufacturing control method based on computer image recognition, which laser-cuts optical glass pieces to form optical embryos, and polishes and grinds the optical embryos to form optical flat pieces; The optical prism is obtained by splicing and assembling, photographing and analyzing the image of the optical prism, judging whether the optical prism has assembly defects and surface processing defects, and replacing the optical flat parts; when the replacement of the optical flat parts is completed, all the optical flat parts of the optical prism are Bonding and fixing, and installing the optical prism into the optical equipment to adjust the optical path alignment, so that the quality of the optical prism can be monitored in real time during the manufacturing process, and the defective optical prism can be replaced in time. Improve the production yield and processing reliability and efficiency of optical prisms.

Preferably, in this step S1, laser cutting the optical glass piece to obtain an optical embryo with a predetermined shape and size specifically includes:

Fix the optical glass piece on the optical table, and obtain the original shape and size of the optical glass piece on the X-axis, Y-axis, and Z-axis of the three-dimensional space;

Compare the predetermined shape and size with the original shape and size, and determine the volume of cutting corresponding to the laser cutting of the optical glass piece;

Adjust the irradiation duration and irradiation direction of the cutting laser beam on the optical glass piece according to the cutting length and the cutting boundary line direction of the cutting volume on the X-axis, Y-axis, and Z-axis of the three-dimensional space.

The beneficial effects of the above technical solutions are as follows: the optical prism is usually formed by splicing and assembling several optical flat parts, and the optical flat parts are usually cuboid-shaped optical glass. In order to manufacture optical flat parts of predetermined shape and size, it is necessary to carry out rough machining of laser cutting on the optical glass parts. In the laser cutting process, by first determining the shape size difference between the predetermined shape size and the original shape size, the cutting volume corresponding to the laser cutting of the optical glass piece is obtained, which facilitates the precise cutting of the optical glass piece. laser cutting. In addition, according to the cutting length of the cutting volume on the X-axis, Y-axis, and Z-axis of the three-dimensional space and the direction of the cutting boundary line, adjusting the irradiation duration and irradiation direction of the cutting laser beam on the optical glass piece can ensure that the laser During the cutting process, the laser beam is controlled to converge and cut along the cutting boundary line, thereby greatly reducing the cutting error rate of laser cutting.

Preferably, in this step S1, the optical blank is installed in a six-degree-of-freedom device, and the optical blank is polished and ground to obtain an optical flat piece, which specifically includes:

The optical body is installed in a six-degree-of-freedom device, and the alignment deviation between the optical surface to be polished and the polishing head of the optical body is determined according to the relative pose relationship between the optical body and the polishing head. horn;

According to the alignment deviation angle, the 6-DOF device is instructed to adjust the 6-DOF orientation of the optical body, so that the adjusted alignment deviation angle is within the preset deviation angle threshold range, so that the optical body is polished and ground , to obtain optical flat parts.

The beneficial effects of the above technical solutions are: the optical embryo body obtained by laser cutting is installed in a six-degree-of-freedom device, and the six-degree-of-freedom device can be based on the difference between the normal direction of the optical embryo body to be polished and the polishing grinding head. The alignment deviation angle is adjusted in real time, and the relative pose relationship between the two is adjusted in real time to ensure that the polishing head always maintains an orientation parallel to the normal direction of the optical surface to be polished during the polishing and grinding process.

Preferably, in this step S2, splicing and assembling a plurality of optical flat parts to obtain an optical prism, and photographing the optical prism to obtain an optical prism image specifically includes:

According to the preset optical prism shape model, the optical prisms are obtained by splicing and assembling several optical flat pieces in a non-parallel manner;

The optical prism is scanned and photographed to obtain a panoramic image of the optical prism, and then Kalman filtering processing and pixel edge sharpening processing are performed on the panoramic image of the optical prism.

The beneficial effects of the above-mentioned technical solutions are as follows: according to the preset optical prism shape model, several optical flat parts are spliced and assembled to preliminarily obtain the corresponding optical prism; and then Kalman filtering is performed on the panoramic image of the optical prism obtained by scanning and shooting the optical prism. Processing and pixel edge sharpening can improve the pixel resolution of the sides of the optical prism, the boundary lines where the sides intersect, and the vertexes of the prism in the optical prism panoramic image.

Preferably, in this step S2, the optical prism image is analyzed to determine whether the optical prism has assembly defects and surface processing defects; and then according to the judgment result, the replacement of the corresponding optical flat panel specifically includes:

Recognize and obtain the main cross-sectional image of the optical prism from the panoramic image of the optical prism, analyze the main cross-sectional image, and determine whether there is an assembly defect between the optical flat parts of the optical prism;

Identify from the panoramic image of the optical prism that the side surface of the optical prism corresponds to the light incident state and the light exit state, and then according to the light incident state and the light exit state, determine whether there is a surface processing defect on the side surface of the optical prism;

According to the judgment results of the assembly defect and the surface processing defect, it is determined whether it is necessary, and the corresponding optical flat plate is replaced.

The beneficial effects of the above technical solutions are: the main cross-sectional image of the optical prism is identified from the panoramic image of the optical prism, and the main cross-sectional image includes the joint detail information of each side surface of the optical prism, and the main cross-sectional image can be accurately judged by analyzing the main cross-sectional image. Whether the assembly between different optical flat parts is misaligned. From the panoramic image of the optical prism, the incident and outgoing states of light corresponding to the sides of the optical prism can be identified, and it can be determined whether the optical surface of each optical flat piece is polished to a standard optical surface state. Finally, when it is determined that the optical prism has assembly defects and surface processing defects, the corresponding optical flat parts can be replaced, which can effectively ensure the production yield of the optical prism.

Preferably, in this step S2, the main cross-sectional image of the optical prism is obtained from the panoramic image of the optical prism, the main cross-sectional image is analyzed, and the determination of whether there is an assembly defect between the optical flat parts of the optical prism specifically includes:

Taking the lower left vertex of the panoramic image of the optical prism as the coordinate origin, the lower boundary is the X axis to the right, and the upper left boundary is the Y axis to establish a plane rectangular coordinate system, and the unit lengths on the X axis and the Y axis respectively correspond to the optical prism panorama The distance between two adjacent horizontal pixels of the image and the distance between two adjacent vertical pixels;

Using the following formula (1), according to the coordinates of each vertex in the main cross-sectional image, determine whether there is an assembly defect on the side of the optical prism between the optical flat parts of the optical prism,

表示将i的值从1取到n求取得到的众数；In the above formula (1), S(i) represents the length value of the i-th side image in the main cross-sectional image; [x(i), y(i)] represents the i-th side image in the main cross-sectional image The coordinates of the intersection vertex with the i-1th side face, if i=1, it is the intersection vertex coordinate of the 1st side face and the nth side face; n represents the number of sides of the optical prism, that is, the optical prism is n prism; W(i) represents the judging value of the assembly defect on the i-th side of the optical prism between the optical flat parts of the optical prism;

Indicates the mode obtained by taking the value of i from 1 to n;

If W(i)=0, it means that there is no assembly defect on the i-th side of the optical prism between the optical flat plates of the optical prism;

If W(i)=1, it means that there is an assembly defect on the i-th side of the optical prism between the optical flat plates of the optical prism;

In this step S2, according to the light incident state and the light exit state, judging whether the side surface of the optical prism has surface processing defects specifically includes:

Using the following formula (2), according to the light incident state and the light exit state, determine whether there is a surface processing defect on the side of the optical prism,

In the above formula (2), P(i) represents the surface processing defect judgment value of the i-th side of the optical prism; [X _in (i), Y _in (i)] represents the light from the i-th side of the optical prism. The corresponding incident light direction vector when incident; [X _out (i'), Y _out (i')] represents the corresponding outgoing light direction vector when the light is incident from the ith side of the optical prism; [X _out (i), Y _out (i)] represents the outgoing light direction vector when the light exits from the ith side of the optical prism; [X _in (i″), Y _in (i″)] represents the ray exits from the ith side of the optical prism The corresponding incident light direction vector; θ ₀ represents the deflection angle of the incident direction and the output direction after the preset light is incident on the positive n optical prism; ∧ represents the logical relationship and; ∨ represents the logical relationship or;

If P(i)=0, it means that there is no surface processing defect on the i-th side face of the optical prism;

If P(i)=1, it means that the i-th side face of the optical prism has surface processing defects;

In this step S2, according to the judgment results of the assembly defect and the surface processing defect, it is determined whether the corresponding optical flat panel needs to be replaced, which specifically includes:

Using the following formula (3), according to the judgment results of the assembly defect and the surface processing defect, it is determined whether the corresponding optical flat panel needs to be replaced,

In the above formula (3), K represents the replacement judgment value of the optical plate of the optical prism; when K=0, it means that the optical plate of the optical prism does not need to be replaced; when K=1, it means that the optical plate needs to be replaced. Replace the optical plate parts of the prism, and replace all the optical plate parts of the optical prism whose side surfaces satisfy [W(i)+P(i)]≠0.

The beneficial effects of the above-mentioned technical solutions are: using the coordinates of each vertex in the main cross-sectional image of the above-mentioned formula (1) to determine whether there is an assembly defect on the side of the optical prism between the optical flat parts of the optical prism, and then use the side of each optical prism. The vertex of the optical prism abstracts the main section of the optical prism into an n-sided shape, which not only facilitates the judgment and calculation of the optical prism, but also accurately locates the sides with assembly defects; The incoming and corresponding outgoing light images determine whether there are process defects on the side of the optical prism, and then inspect the optical prism according to the principle of light refraction in the prism, and perform operations in the form of light vectors in the image, that is, the light can be geometrically digitized. , and can accurately and quickly use the computer to determine the process defects on the side of the optical prism, thereby reducing the production time of the optical prism and improving the production efficiency; finally, the above formula (3) is used to determine the optical prism according to the assembly defect judgment value and the process defect judgment value. Whether the manufacturing is successful or whether the optical flat parts with assembly defects and process defects are replaced, so as to control the output of the optical prisms that have passed the inspection, and carry out targeted optical flat parts repair for the defective optical prisms to ensure the production output. The optical prisms are all standard qualified.

Preferably, in this step S3, after completing the replacement of the optical flat piece, bonding and fixing all the optical flat pieces of the optical prism specifically includes:

After the replacement of the optical flat parts is completed, all adjacent optical flat parts in the optical prism are aligned along the corresponding adjoining boundary lines, and then adhesive is applied to the adjoining boundary lines, so as to realize adjacent optical flat parts. Bonding and fixing of flat parts.

The beneficial effects of the above technical solutions are: after the replacement of the optical flat piece is completed, any adjacent optical flat piece in the optical prism is bonded and fixed with adhesive, thereby improving the overall mechanical stability of the optical prism.

Preferably, in this step S3, installing the optical prism into the optical device to perform optical path alignment adjustment specifically includes:

After the optical prism is installed in the optical device, the orientation of the optical prism inside the optical device is adjusted so that the main optical axis of the optical prism coincides with the optical axis of the optical device.

The beneficial effects of the above technical solutions are: after the optical prism is installed in the optical device, the orientation of the optical prism inside the optical device is adjusted, so that the main optical axis of the optical prism can be coincident with the optical axis of the optical device, thereby avoiding optical The misalignment of the optical axis between the prism and the optical device causes the image quality of the optical device to degrade.

It can be seen from the content of the above-mentioned embodiments that the optical prism manufacturing control method based on image recognition laser-cuts an optical glass piece to form an optical embryo, and polishes and grinds the optical embryo to form an optical flat piece; and then splices and assembles several optical flat pieces. Obtain the optical prism, take and analyze the image of the optical prism, judge whether the optical prism has assembly defects and surface processing defects, and replace the optical flat parts; when the replacement of the optical flat parts is completed, all the optical flat parts of the optical prism are bonded. Fix, and install the optical prism into the optical equipment to adjust the optical path alignment, so that the quality of the optical prism can be monitored in real time during the manufacturing process, and the optical prism with defects can be replaced in time to improve the optical prism. production yield and processing reliability and efficiency.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Thus, provided that these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims (8)

1. The method for controlling the manufacturing of the optical prism based on computer image recognition is characterized by comprising the following steps of:

step S1, carrying out laser cutting on an optical glass piece to obtain an optical blank with a preset shape and size; then, the optical blank body is arranged in six-degree-of-freedom equipment, and the optical blank body is polished and ground to obtain an optical flat plate;

s2, splicing and assembling a plurality of optical flat plate pieces to obtain an optical prism, and shooting the optical prism to obtain an optical prism image; analyzing the optical prism image, and judging whether the optical prism has an assembly defect and a surface processing defect; then, according to the judgment result, replacing the corresponding optical flat piece;

s3, after the optical flat pieces are replaced, bonding and fixing all the optical flat pieces of the optical prism; and then the optical prism is arranged in the optical equipment for light path alignment adjustment.

2. A method for controlling the manufacture of an optical prism based on computer image recognition according to claim 1, wherein:

in the step S1, laser cutting the optical glass piece to obtain an optical blank with a predetermined shape and size specifically includes:

fixing the optical glass piece on an optical platform, and acquiring the original shape and size of the optical glass piece on the X axis, the Y axis and the Z axis of a three-dimensional space;

comparing the preset shape size with the original shape size, and determining a cutting volume amount corresponding to the laser cutting of the optical glass piece;

and adjusting the irradiation duration and the irradiation direction of the cutting laser beam on the optical glass piece according to the cutting length and the cutting boundary line trend of the cutting volume on the X axis, the Y axis and the Z axis of the three-dimensional space.

3. A method for controlling the manufacture of an optical prism based on computer image recognition according to claim 2, wherein:

in the step S1, installing the optical blank in a six-degree-of-freedom device, and polishing and grinding the optical blank to obtain an optical flat piece specifically includes:

installing the optical blank in six-degree-of-freedom equipment, and determining an alignment deviation angle between an optical surface to be polished of the optical blank and a polishing grinding head according to the relative pose relationship between the optical blank and the polishing grinding head;

and according to the alignment deviation angle, indicating the six-degree-of-freedom equipment to adjust the six-degree-of-freedom orientation of the optical blank, and enabling the adjusted alignment deviation angle to be within a preset deviation angle threshold range, so that the optical blank is polished and ground to obtain an optical flat piece.

4. A method for controlling the manufacture of an optical prism based on computer image recognition according to claim 1, wherein:

in step S2, splicing and assembling the plurality of optical flat plate members to obtain an optical prism, and shooting the optical prism to obtain an optical prism image specifically includes:

splicing and assembling a plurality of optical flat plate pieces in a non-parallel mode in pairs according to a preset optical prism shape model to obtain an optical prism;

and scanning and shooting the optical prism to obtain an optical prism panoramic image, and then performing Kalman filtering processing and pixel edge sharpening processing on the optical prism panoramic image.

5. A method for controlling the manufacture of an optical prism based on computer image recognition according to claim 4, wherein:

in the step S2, analyzing the optical prism image, and determining whether the optical prism has an assembly defect and a surface processing defect; and then according to the judged result, the replacement of the corresponding optical flat plate specifically comprises:

identifying and obtaining a main section image of the optical prism from the panoramic image of the optical prism, analyzing the main section image, and judging whether an assembly defect exists between optical flat pieces of the optical prism;

identifying and obtaining a light incidence state and a light emergence state corresponding to the side surface of the optical prism from the panoramic image of the optical prism, and judging whether the side surface of the optical prism has surface processing defects or not according to the light incidence state and the light emergence state;

and determining whether the optical flat plate piece needs to be replaced according to the judgment results of the assembly defects and the surface machining defects.

6. A method for controlling the manufacture of an optical prism based on computer image recognition according to claim 5, wherein:

in step S2, identifying and obtaining a main sectional image of the optical prism from the panoramic image of the optical prism, analyzing the main sectional image, and determining whether an assembly defect exists between the optical flat pieces of the optical prism specifically includes:

establishing a plane rectangular coordinate system for a Y axis with a left lower vertex of the optical prism panoramic image as an origin of coordinates, a lower boundary thereof as the right direction and a left boundary thereof as the upward direction, wherein unit lengths in the X axis and the Y axis respectively correspond to a distance between two adjacent transverse pixel points and a distance between two adjacent longitudinal pixel points of the optical prism panoramic image;

judging whether there is an assembly defect between the optical flat members of the optical prism on the side of the optical prism based on each vertex coordinate in the main sectional image using the following formula (1),

in the above formula (1), S (i) represents a length value of the ith side image in the main sectional image; [ x (i), y (i)]Coordinates representing an intersecting vertex of an ith side face and an ith-1 side face in the main sectional image, and if i =1, coordinates of the intersecting vertex of the 1 st side face and an nth side face; n represents the number of the side surfaces of the optical prism, namely the optical prism is an n prism; w (i) represents an assembly defect determination value between optical plate members of the optical prism on the ith side of the optical prism;

a mode obtained by taking the value of i from 1 to n;

if W (i) =0, it means that there is no assembly defect between the optical flat members of the optical prism on the ith side surface of the optical prism;

if W (i) =1, it indicates that there is an assembly defect between the optical flat members of the optical prism on the i-th side of the optical prism;

in step S2, determining whether a surface processing defect exists on the side surface of the optical prism according to the light incident state and the light exiting state specifically includes:

judging whether the side surface of the optical prism has surface processing defects or not according to the light incidence state and the light emergence state by using the following formula (2),

in the above formula (2), P (i) represents a surface processing defect determination value of the ith side surface of the optical prism; [ X ] _in (i),Y _in (i)]Representing the incident light direction vector corresponding to the incident light from the ith side of the optical prism; [ X ] _out (i′),Y _out (i′)]The vector of the emergent light direction corresponding to the incident light from the ith side surface of the optical prism is shown; [ X ] _out (i),Y _out (i)]An output light direction vector representing the light ray when the light ray is emitted from the ith side surface of the optical prism; [ X ] _in (i″),Y _in (i″)]Representing the corresponding incident light direction vector when the light ray exits from the ith side surface of the optical prism; theta ₀ Representing a corresponding deflection angle of an incident direction and an emergent direction after a preset light ray is incident to the n optical prism; Λ represents a logical relationship and; the V-shaped represents a logical relationship or;

if P (i) =0, it means that there is no surface processing defect on the ith side face of the optical prism;

if P (i) =1, the surface machining defect exists in the ith side face of the optical prism;

in step S2, determining whether the corresponding optical flat piece needs to be replaced according to the judgment results of the assembly defect and the surface processing defect specifically includes:

determining whether a corresponding optical flat plate member needs to be replaced according to the judgment results of the assembly defect and the surface processing defect by using the following formula (3),

in the above formula (3), K represents a replacement determination value of the optical flat member of the optical prism; when K =0, it means that the optical plate member of the optical prism does not need to be replaced; when K =1, it indicates that the optical plate of the optical prism needs to be replaced, and all the optical plate members whose side surfaces satisfy [ W (i) + P (i) ] ≠ 0 in the optical prism are replaced.

7. A method for controlling the manufacture of an optical prism based on computer image recognition according to claim 1, wherein:

in step S3, after the optical plate member is replaced, the adhering and fixing all the optical plate members of the optical prism specifically includes:

after the optical flat pieces are replaced, all the adjacent optical flat pieces in the optical prism are aligned along the corresponding connecting boundary lines, and then the adhesive is applied to the connecting boundary lines, so that the adjacent optical flat pieces are adhered and fixed.

8. A method for controlling the manufacture of an optical prism based on computer image recognition according to claim 7, wherein:

in step S3, installing the optical prism in an optical device for optical path alignment adjustment specifically includes:

after the optical prism is installed in the optical equipment, the posture orientation of the optical prism inside the optical equipment is adjusted, so that the main optical axis of the optical prism is coincident with the optical axis of the optical equipment.

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