CN114619297B - Processing technology of right-angle prism side sag 10' - Google Patents
Processing technology of right-angle prism side sag 10' Download PDFInfo
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- CN114619297B CN114619297B CN202210419193.9A CN202210419193A CN114619297B CN 114619297 B CN114619297 B CN 114619297B CN 202210419193 A CN202210419193 A CN 202210419193A CN 114619297 B CN114619297 B CN 114619297B
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- 238000005516 engineering process Methods 0.000 title claims abstract description 15
- 230000003287 optical effect Effects 0.000 claims abstract description 34
- 239000004568 cement Substances 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 20
- 238000000227 grinding Methods 0.000 claims description 12
- 238000003754 machining Methods 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 5
- 239000005304 optical glass Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000007665 sagging Methods 0.000 abstract 1
- 229920002120 photoresistant polymer Polymers 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
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Abstract
The utility model discloses a processing technology of a right-angle prism side lobe 10', and relates to the technical field of optical component production. The utility model relates to a processing technology of a right-angle prism side lobe 10', which comprises the steps of firstly placing a rough-processed right-angle prism on a special leaning body, processing three polished surfaces of the right-angle prism, and then placing the processed right-angle prism on a prism processing tool, wherein the prism processing tool comprises a light rubber backing plate, 45 DEG leaning bodies are aligned to the edge part of the upper surface of the light rubber backing plate, and 90 DEG less than or equal to 2' square leaning bodies are also arranged on the upper surface of the light rubber backing plate. The right-angle prism is adhered to the square leaning body with the angle of more than or equal to 90 degrees and less than or equal to 2 degrees, and the two side surfaces are intensively processed, so that the included angles between the two side surfaces and the three polished surfaces are controlled within 90 degrees+/-10 degrees, and all included angles θ1=θ2= +/-30 degrees, thereby effectively controlling the side sagging precision and improving the processing efficiency.
Description
Technical Field
The utility model relates to the technical field of optical component production, in particular to a processing technology of a right-angle prism side sag 10'.
Background
At present, in the manufacturing process of the prism, defective products with product precision which cannot meet the requirement are often produced, and the defective products are caused by poor control of the side sag of the upper disc of the small prism in the processing process. In the efficient planar production, the dimensional and angular precision of the prism is ensured by a plurality of fixture clamps, so that the rationality of fixture clamp design and the precision of manufacture are important conditions for ensuring the efficient production of the whole manufacturing process and keeping the high qualification rate of the product. If the height of the prism is inconsistent or the angle precision is inaccurate, the height of the prism processed by the prism is small, the angle is out of tolerance, and the repair of unqualified products is greatly increased. Therefore, the main requirements of the tool clamp design are: the requirements of the size and the angle precision of the prism are ensured by the precision and the processing technology of the fixture clamp; the production efficiency is improved by means of the design rationality of the tool clamp.
In the prism processing process, the leaning body is generally made of glass materials, so that the precision of the leaning body can be high. Considering that other factors influencing the angle precision exist in the whole processing process, the control difficulty is relatively high in some factors, and the precision is required to be made as high as possible when the leaning body is manufactured so as to make up the influence of other factors on the angle precision.
Through searching, chinese patent publication number: 202572201U, publication date: 2012.12.05, the utility model creation name: machining tool for special-shaped prisms. The utility model discloses a processing tool for a special-shaped prism, which comprises a bottom plate, wherein the bottom plate is provided with a flat upper surface, the periphery of the bottom plate is provided with side faces which are vertical to the upper surface, a connecting disc is fixedly arranged at the bottom of the bottom plate, and the bottom plate is made of a glass plate with good surface flatness or other flat-surface materials. The utility model has simple operation process, high production efficiency and low product waste rate. But the utility model is suitable for processing the special-shaped prism with lower precision requirement, and can not meet the requirement of controlling the side sag of the upper disc of the small prism with higher precision requirement.
Another example is chinese patent application No.: 201220296474.1, publication date: 2012.12.12, the utility model creation name: a frock for prism preparation. The utility model discloses a tool for manufacturing a triangular prism, which comprises a bottom plate, wherein a first standard block and a second standard block are arranged on the bottom plate in parallel, a bracket is arranged on the bottom plate, a mounting plate is arranged on the bracket, a third standard block is arranged on the mounting plate, and the bottom surface of the third standard block is parallel to the bottom plate. The first standard block, the second standard block and the third standard block are all standard triple prisms. The bottom plate is adhered to the first standard block, the second standard block and the support, the support is adhered to the mounting plate, and the mounting plate is adhered to the third standard block through adhesive. The tool reliably ensures the angle and the surface shape size precision of the prism, but the follow-up processing side sag of the small prism is not easy to control because the bottom surface of the standard block is a plane.
Disclosure of Invention
1. Technical problem to be solved by the utility model
Aiming at the problems that the side sag of the prism is not easy to control, the control precision is low and the like in the prior art, the utility model provides a processing technology of the side sag 10' of a right-angle prism, which comprises the steps of firstly processing three polished surfaces of the right-angle prism by adopting a common leaning body to ensure that θ1=θ2= ±10', and then placing the processed right-angle prism on a prism side processing tool to process two side surfaces so as to control the included angle between the two side surfaces of the right-angle prism and the three polished surfaces to be within the range of 90 DEG+ -10 '.
2. Technical proposal
In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:
a processing technology of a square prism side lobe 10 'includes that firstly, a general leaning body is used for a square prism after rough grinding and forming, three polished surfaces of the square prism are processed, then the processed square prism is placed on a prism side processing tool, the square leaning body of the square prism and 90 degrees less than or equal to 2' is glued to a disc, two side surfaces are processed in a disc mode, therefore, an included angle between the two side surfaces of the square prism and the three polished surfaces is controlled to be within 90 degrees +/-10 ', and θ1=θ2= +/-10', and the processing technology specifically includes the following steps:
step one, blank processing: carrying out rough grinding forming on a right-angle prism with the right-angle side length of 10-50 mm according to the drawing size requirement, and reserving machining allowance of 0.4mm on all surfaces;
step two, processing a first right-angle surface: the chord surface on the right-angle prism is used as an upper disc surface to be glued on a common leaning body, a first right-angle surface is processed according to the aperture and the surface finish required by a drawing, and the disc is arranged after the processing is finished and is cleaned;
step three, processing a second right angle surface: processing the second right angle surface, the aperture and the surface finish according to the processing requirements of the drawing on a rectangular leaning body with the angle of 90 degrees being less than or equal to 5', and then putting the processed rectangular leaning body on a disc after the processing is finished, and cleaning;
fourthly, chord plane processing: positioning a 45 DEG + -5 'special leaning body optical cement on an optical cement bottom plate by using a 90 DEG ridge line, taking any right angle surface of a right angle prism as an upper disc surface optical cement on a 45 DEG + -5' special leaning body, processing according to the size, aperture and surface finish required by a drawing, and putting down and cleaning after processing;
step five, loading on a disc: firstly, placing 90 DEG & lt 2 'square leaning body optical cement on an optical cement backing plate, placing any right angle surface optical cement on a right angle prism on the 90 DEG & lt 2' square leaning body, placing the other right angle surface on the aperture rough stripe of the glazing backing plate, tightly placing the side surface on the right angle prism on the inner side surface of the 45 DEG leaning body for positioning, and then taking the side surface as an integral optical cement on the optical cement backing plate;
step six, repeating the steps until the photoresist bottom plate is full of glue, and performing disc forming processing;
step seven, after the plate is arranged, processing the two side surfaces of the right-angle prism, and controlling the sizes of the two side surfaces according to the drawing requirements; the included angle between the two side surfaces and the right angle surface and the chord surface is within the range of 90 degrees plus or minus 10'.
According to a further technical scheme, the three polished surfaces are a first right-angle surface and a second right-angle surface and a chord surface on the right-angle prism respectively; the two side surfaces are a first side surface and a second side surface on the right-angle prism respectively.
In a further technical scheme, in the first step, the surface roughness and the size are processed according to the technological requirements, and all angles of a blank are +/-10'.
In the third step, when the second right-angle surface is processed, the finish grinding parallelism is controlled to be in the range of phi 300 to be 0.001mm, and the range of the surface type phi 300 to be 0.001mm; during fine polishing, a plane interferometer is used for measuring, and the parallelism is controlled; the error is less than 0.0005mm in the range of phi 300, ensuring that the included angle of the two right-angle faces is 90 DEG + -10'.
In the fourth step, when the chord surface is processed, the fine grinding parallelism is controlled to be 0.001mm within the scope of phi 300; and during fine polishing, a plane interferometer is used for detection, the parallelism is controlled within the phi 300 range, the error is smaller than 0.0005mm, and the theta 2 is ensured to be within the range of plus or minus 10'.
In a further technical scheme, in the fifth step, two right-angle prisms are glued on a square leaning body with the angle of 90 degrees being less than or equal to 2 ", so that the disk forming processing efficiency is effectively improved.
In a further technical scheme, in the step seven, when the side surface is machined, the frosting parallelism is controlled to be in the range of 0.001mm, and the range of the surface type phi 300 is controlled to be in the range of 0.002mm.
Further technical scheme, prism side processing frock includes the light cushion board, light cushion board upper surface limit portion aligns and is provided with and leans on the body, light cushion board upper surface still is provided with 90 and is less than or equal to 2 "square leaning on the body, 90 is less than or equal to 2" square leaning on the medial surface and lean on the medial surface to contact.
According to a further technical scheme, the optical cement backing plate, the 45-degree leaning body and the 90-degree or less than 2' square leaning body are made of colorless optical glass, so that the angle precision is ensured, and all right angle surfaces of the right angle prism are convenient to align with apertures on the optical cement backing plate; wherein the 45 DEG leaning body is in a columnar structure of 45 DEG + -10 ', and the 90 DEG + -2 ' square leaning body is in a block structure of 90 DEG + -2 '. By utilizing a special tool rest, the process is simplified, thereby being convenient for operation.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:
(1) According to the processing technology of the side sag 10' of the right-angle prism, the three polished surfaces of the right-angle prism after rough processing are processed by using a common leaning body, the processed right-angle prism is glued with a square leaning body with the angle of less than or equal to 90 DEG and less than 2 ', and then the two side surfaces are processed in a concentrated manner, so that the included angle between the two side surfaces of the right-angle prism and the three polished surfaces is controlled to be 90 DEG+/-10 ';
(2) The utility model relates to a processing technology of a right-angle prism side lobe 10', which comprises an optical cement backing plate, wherein the edge part of the upper surface of the optical cement backing plate is aligned and provided with a 45 DEG leaning body, the upper surface of the optical cement backing plate is also provided with a 90 DEG & lt 2 ' -square leaning body, and the optical cement backing plate, the 45 DEG leaning body and the 90 DEG & lt 2 ' -square leaning body are made of colorless optical glass so as to ensure the angle precision and facilitate the right angle of the right-angle prism to face an aperture on the optical cement backing plate; wherein the 45 DEG leaning body is in a 45 DEG + -10 ' block structure, and the 90 DEG + -2 ' square leaning body is in a 90 DEG + -2 ' block structure. The process is simplified by utilizing the special tool rest, so that the operation is convenient;
(3) According to the processing technology of the side sag 10 'of the right-angle prism, after the three polished surfaces of the right-angle prism are processed, the two side surfaces of the right-angle prism are processed, the second right angle surface on the right-angle prism faces the rough aperture stripe on the glazing glue backing plate, and the included angle between the first side surface and the chord surface of the right-angle surface and between the second side surface and the chord surface of the right-angle prism is in the range of 90 DEG + -10', so that the coiling rate is high, the qualification rate is high, the production efficiency is effectively improved, and the yield is improved.
Drawings
FIG. 1 is a schematic diagram of a glued state of a right angle prism according to the present utility model;
FIG. 2 is a schematic diagram of the gluing tool in FIG. 1;
FIG. 3 is a schematic diagram showing the bonding state between the square leaning body and the right angle prism of 90+.2' in FIG. 1;
FIG. 4 is a schematic diagram showing the structure of the glued upper tray of the rectangular prism;
fig. 5 is a schematic view of the right angle prism in fig. 3.
In the figure: 1-a light adhesive backing plate; a leaning body with the angle of 2-45 degrees; a square rest with a angle of 3-90 DEG to 2'; 4-right angle prism; 5-a photoresist base plate; 41-a first right angle surface; 42-a second right angle surface; 43-first side; 44-a second side; 45-chord plane.
Detailed Description
For a further understanding of the present utility model, the utility model is described in detail with reference to the drawings.
Example 1
In the processing technology of the right-angle prism side sag 10″ of this embodiment, as shown in fig. 1 to 5, firstly, the right-angle prism 4 after rough grinding is processed by a special leaning body and three polished surfaces of the right-angle prism 4, then the processed right-angle prism 4 is glued on a square leaning body 3 with the angle of 90 degrees being less than or equal to 2″ and processed on two side surfaces by a disc, thereby controlling the included angle between the two side surfaces of the right-angle prism 4 and the three polished surfaces to be within 90 degrees +/-10″, and θ1=θ2= +/-10″, specifically comprising the following steps:
step one, blank processing: carrying out rough grinding forming on a right-angle prism with the right-angle side length of 10-50 mm according to the drawing size requirement, and reserving machining allowance of 0.4mm on all surfaces;
step two, processing a first right-angle surface 41: the chord surface 45 on the right-angle prism 4 is used as an upper disc surface to be glued on a common leaning body, a first right-angle surface 41 is processed according to the aperture and the surface finish required by the drawing, and the upper disc is arranged after the processing is finished and is cleaned;
step three, processing a second right angle surface 42: processing the second right angle surface 42 on the rectangular leaning body with the angle of 90 degrees being less than or equal to 5', processing the aperture and the surface finish according to the drawing requirements, controlling the finish grinding parallelism to be 0.001mm in the range of phi 300, and controlling the range of the surface phi 300 to be 0.001mm; during fine polishing, a plane interferometer is used for measuring, and the parallelism is controlled; the error is smaller than 0.0005mm in the scope of phi 300, so that the included angle of two right-angle faces is 90+/-10'; putting the processed materials on a tray, and cleaning;
fourthly, chord plane 45 processing: positioning a 45 DEG + -5 'special leaning body optical cement on an optical cement bottom plate 5 by using a 90 DEG ridge line, positioning a 45 DEG + -5' special leaning body 2 by using any right angle surface of a right angle prism 4 as an upper disc surface optical cement, and processing a chord surface 45 according to the size, aperture and surface finish required by a drawing, wherein the accurate grinding parallelism is controlled within the range of phi 300 mm; the range of the surface form phi 300 is 0.001mm; detecting by using a plane interferometer during fine polishing, controlling the parallelism within the phi 300 range, wherein the error is less than 0.0005mm, and ensuring the tower difference within +/-10'; putting the processed materials on a tray, and cleaning;
step five, loading on a disc: firstly, placing a 90 DEG & lt 2 'square leaning body 3 optical cement on an optical cement backing plate 1, and placing any right angle surface optical cement on a right angle prism 4 on the 90 DEG & lt 2' square leaning body 3, wherein the other right angle surface faces to the aperture rough stripe of the glazing rubber backing plate 1; then the side surface 43 on the right-angle prism 4 is abutted against the inner side surface of the 45-degree leaning body 2 for positioning, and then the side surface is used as an integral photoresist on the photoresist base plate 5;
step six, repeating the steps until the photoresist bottom plate 5 is full, and performing disc forming processing;
step seven, after the plate is arranged, processing the two side surfaces of the right-angle prism 4, and controlling the sizes of the two side surfaces according to the drawing requirements; the included angle between the two side surfaces and the right angle surface and the chord surface 45 is within the range of 90 degrees plus or minus 10'.
In this embodiment, the included angle between the two side surfaces and the three polished surfaces is within 90°±10″ and θ1=θ2= ±10″ respectively being a first right angle surface 41, a second right angle surface 42 and a chord surface 45 on the right angle prism 4; the two side surfaces are a first side surface 43 and a second side surface 44 on the right angle prism 4 respectively. In the second step, the usual rest is referred to as 45 ° rest when machining the first right-angle surface 41.
In the fifth step, two right-angle prisms 4 are glued on a square leaning body 3 with the angle of 90 degrees being less than or equal to 2 ", so that the disk forming processing efficiency is effectively improved.
In a further technical scheme, in the step seven, when the side surface is machined, the frosting parallelism is controlled to be in the range of 0.001mm, and the range of the surface type phi 300 is controlled to be in the range of 0.002mm.
Example 2
The basic structure of the processing technology of the right-angle prism side sag 10″ of the embodiment is the same as that of embodiment 1, and the difference and improvement are that: as shown in FIG. 1, the side processing tool for the prism comprises a light rubber backing plate 1, wherein a 45-degree leaning body 2 is aligned to the edge of the upper surface of the light rubber backing plate 1, a 90-degree or 2-degree square leaning body 3 is further arranged on the upper surface of the light rubber backing plate 1, and the inner side surface of the 90-degree or 2-degree square leaning body 3 is contacted with the inner side surface of the 45-degree leaning body 2.
In this embodiment, the optical cement pad 1, the 45 ° leaning body 2, the limiting block 3 and the 90 ° +.2″ square leaning body 3 are made of colorless optical glass, so as to ensure the angle precision, and facilitate the alignment of the right angle surfaces of the right angle prism 4 with the aperture on the optical cement pad 1; wherein the 45 DEG leaning body 2 is in a columnar structure of 45 DEG + -10 ', and the 90 DEG + -2 ' square leaning body 3 is in a block structure of 90 DEG + -2 '. By utilizing a special tool rest, the process is simplified, thereby being convenient for operation.
The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.
Claims (6)
1. A processing technology of a right-angle prism side lobe 10' is characterized in that: firstly, a special leaning body is used for the right-angle prism (4) after rough grinding and forming, three polished surfaces of the right-angle prism (4) are processed, then the processed right-angle prism (4) is placed on a prism side processing tool, and the process is simplified by utilizing the special tool leaning body;
the prism side surface machining tool comprises a light rubber cushion plate (1), wherein a 45-degree leaning body (2) is arranged on the edge of the upper surface of the light rubber cushion plate (1) in an aligned mode, a 90-degree or less than 2-degree square leaning body (3) is further arranged on the upper surface of the light rubber cushion plate (1), and the inner side surface of the 90-degree or less than 2-degree square leaning body (3) is contacted with the inner side surface of the 45-degree leaning body (2);
the light rubber cushion plate (1), the 45-degree leaning body (2) and the 90-degree less than or equal to 2 'square leaning body (3) are made of colorless optical glass, so that the right angle of the right angle prism (4) faces to the aperture on the light rubber cushion plate (1) conveniently to ensure the angle precision, wherein the 45-degree leaning body (2) is in a 45-degree +/-10' block structure, and the 90-degree less than or equal to 2 'square leaning body (3) is in a 90-degree +/-2' block structure;
the right-angle prism (4) and 90 degrees less than or equal to 2 'square leaning body (3) are coiled on the optical glue, and the two side surfaces are processed into a disc, so that the included angle between the two side surfaces of the right-angle prism (4) and the three polished surfaces is controlled within 90 degrees +/-10', and the method specifically comprises the following steps:
step one, blank processing: carrying out rough grinding forming on a right-angle prism with the right-angle side length of 10-50 mm according to the drawing size requirement, and reserving machining allowance of 0.4mm on all surfaces;
step two, processing a first right-angle surface (41): a chord surface (45) on the right-angle prism (4) is used as an upper disc surface to be glued on a common leaning body, a first right-angle surface (41) is processed according to the aperture and the surface finish required by a drawing, and the disc is arranged after the processing is finished and cleaned;
step three, processing a second right angle surface (42): processing the second right-angle surface (42) on the rectangular leaning body with the angle of 90 degrees being less than or equal to 5' by using the optical cement of the processed first right-angle surface (41), processing the aperture and the surface finish according to the requirements of a drawing, and then putting the optical cement on the disc after processing and cleaning;
fourthly, chord plane (45) processing: positioning a 45 DEG+ -5 'special leaning body optical cement on an optical cement bottom plate (5) by using a 90 DEG ridge line, using any right angle surface of a right angle prism (4) as an upper disc surface optical cement on a 45 DEG+ -5' special leaning body, processing a chord surface (45) according to the size, aperture and surface finish required by a drawing, and carrying out disc feeding and cleaning after the processing is finished;
step five, loading on a disc: firstly, placing a 90 DEG & lt 2 'square leaning body (3) on a light rubber cushion board (1), placing any right angle surface light glue on a right angle prism (4) on the 90 DEG & lt 2' square leaning body (3), and placing the other right angle surface light glue on the aperture rough stripe of the light rubber cushion board (1); the side surface (43) on the right-angle prism (4) is tightly abutted against the inner side surface of the 45-degree leaning body (2), and then the optical cement is arranged on the optical cement bottom plate (5) with the diameter of 300 mm;
two right-angle prisms (4) are glued on a square leaning body (3) with the angle of 90 DEG being less than or equal to 2';
step six, repeating the steps until the optical cement bottom plate (5) with the diameter of 300mm is fully glued, and performing disc forming processing;
and seventhly, after the plate is arranged, processing the two side surfaces of the right-angle prism (4), and controlling the sizes of the two side surfaces according to the drawing requirements.
2. The process for machining the side lobe 10 "of the right-angle prism according to claim 1, wherein the process comprises the following steps of: the three polished surfaces are respectively a first right-angle surface (41) and a second right-angle surface (42) and a chord surface (45) on the right-angle prism (4); the two side surfaces are a first side surface (43) and a second side surface (44) on the right-angle prism (4) respectively.
3. The process for machining the side lobe 10 "of the right-angle prism according to claim 1, wherein the process comprises the following steps of: in the first step, the dimension is processed according to the technological requirement, and all angles of the blank are +/-10'.
4. The process for machining the side lobe 10 "of the right-angle prism according to claim 1, wherein the process comprises the following steps of: in the third step, when the second right-angle surface (42) is processed, the finish grinding parallelism is controlled to be in the range of 0.001mm of phi 300, and the range of the surface type phi 300 is controlled to be 0.001mm; during fine polishing, a plane interferometer is used for measuring, and the parallelism is controlled; the error is less than 0.0005mm in the range of phi 300, ensuring that the included angle of the two right-angle faces is 90 DEG + -10'.
5. The process for machining the side lobe 10 "of the right-angle prism according to claim 1, wherein the process comprises the following steps of: in the fourth step, when the chord surface (45) is processed, the fine grinding parallelism is controlled to be 0.001mm within the scope of phi 300; and during fine polishing, the plane interferometer is used for detection, the parallelism is controlled within the phi 300 range, the error is smaller than 0.0005mm, and the tower difference is ensured to be within +/-10'.
6. The process for machining the side lobe 10 "of the right-angle prism according to claim 1, wherein the process comprises the following steps of: in the seventh step, when the side surface is machined, the frosted parallelism is controlled to be in the range of 0.001mm, and the range of the surface form phi 300 is controlled to be 0.002mm.
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| CN117047608B (en) * | 2023-07-20 | 2024-06-28 | 北京创思工贸有限公司 | Processing method of trapezoid optical prism |
| CN117192725B (en) * | 2023-09-27 | 2024-08-27 | 北京创思工贸有限公司 | Gluing method of reflecting prism group |
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