CN119439434B - A prism bonding structure and bonding method - Google Patents
A prism bonding structure and bonding methodInfo
- Publication number
- CN119439434B CN119439434B CN202411829352.8A CN202411829352A CN119439434B CN 119439434 B CN119439434 B CN 119439434B CN 202411829352 A CN202411829352 A CN 202411829352A CN 119439434 B CN119439434 B CN 119439434B
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- China
- Prior art keywords
- prism
- plate
- side plate
- glue
- tooling
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/1805—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
本发明公开了一种棱镜粘接结构及粘接方法，该棱镜粘接结构用于粘接消旋棱镜，包括棱镜安装座、棱镜盖板和压圈；棱镜安装座包括底板，底板的两个相对的侧面分别设有第一侧板和第二侧板；第二侧板设有工装压板；底板的另两个相对的侧面分别设有定位块和可拆卸的工装挡板；第一侧板、工装压板、定位块和工装挡板从四个方位定位好棱镜；底板上还对称设有多个凸台，棱镜盖板同样对称设有多个螺纹孔，压圈设有与螺纹孔对应的螺纹；棱镜盖板盖合于棱镜安装座，旋转压圈使压圈与棱镜之间存在一个胶层厚度的间隔，且在所有凸台以及压圈平面均设置胶层，通过所设置的胶层粘接棱镜。本发明结构及粘接工艺简单，提高了装调效率及棱镜在振动环境下的位置精度。
The present invention discloses a prism bonding structure and bonding method. The prism bonding structure is used for bonding a derotational prism and includes a prism mounting seat, a prism cover plate, and a pressure ring. The prism mounting seat includes a base plate, two opposite sides of the base plate are respectively provided with a first side plate and a second side plate; the second side plate is provided with a tooling pressure plate; the other two opposite sides of the base plate are respectively provided with a positioning block and a detachable tooling baffle; the first side plate, the tooling pressure plate, the positioning block, and the tooling baffle position the prism from four directions; the base plate is also symmetrically provided with a plurality of bosses, the prism cover plate is also symmetrically provided with a plurality of threaded holes, and the pressure ring is provided with threads corresponding to the threaded holes; the prism cover plate is fitted onto the prism mounting seat, and the pressure ring is rotated to form a gap of a thickness of a glue layer between the pressure ring and the prism, and a glue layer is provided on all bosses and the pressure ring surface, and the prism is bonded via the provided glue layer. The present invention has a simple structure and bonding process, and improves the assembly efficiency and the position accuracy of the prism in a vibration environment.
Description
Technical Field
The invention belongs to the technical field of optical machine design and adjustment, and particularly relates to a prism bonding structure and a bonding method.
Background
The prism is a polyhedron made of transparent materials, and is widely applied to optical systems. For example, a number of imaging optical systems use Delta prisms. Unlike conventional lenses, the prism is not easy to clamp, and the prism surface shape accuracy is higher than that of the lens, so that the surface shape change control caused by the installation stress is more severe than that of the lens.
A common prism mounting structure is a single-pressing plate pre-tightening mounting structure, namely a rubber pad is arranged between a pressing plate and a prism, and the elasticity of the rubber pad is utilized to pre-load the prism. Because the preload force is larger, larger installation stress is generated, the prism is deformed, and stress refraction is caused. The adhesive structure is simple and compact, the stress distribution is uniform, the temperature adaptability is good, the parts of different materials can be combined together, and the adhesive structure is widely applied to optical instruments. The conventional prism bonding structure generally adopts silicone rubber for bonding, and the prism is easy to move in a vibration environment due to the fact that the silicone rubber is softer, so that some mechanical positioning surfaces can be adopted to assist in mechanical limiting of the prism. Therefore, the assembly and adjustment process is complex, and the position accuracy of the prism under vibration is not high enough.
Disclosure of Invention
The invention aims to provide a prism bonding structure and a bonding method, which adopt epoxy resin glue to reliably bond a prism in a prism mounting seat, mechanical limit is not needed, the prism is not easy to move in a vibration environment, the structure and the bonding process are simple, and the assembly and adjustment efficiency and the position precision of the prism in the vibration environment are greatly improved.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
according to a first aspect of the present invention, there is provided a prism bonding structure for bonding a racemized prism, the prism bonding structure comprising a prism mount, a prism cover plate, and a press ring, wherein:
The prism mounting seat comprises a bottom plate, wherein a first side plate and a second side plate are respectively arranged on two opposite side surfaces of the bottom plate, and trimming bosses are respectively arranged on the outer sides of the first side plate and the second side plate and are perpendicular to the inner side surface of the first side plate;
the second side plate is provided with a through groove, and a tool pressing plate is arranged in the through groove; the prism is arranged behind the prism mounting seat, and the prism is pressed to the inner side surface of the first side plate and the positioning block by using the tool baffle plate and the tool pressing plate, wherein the inner side surface of the first side plate corresponds to the reflecting surface of the prism;
The base plate is also symmetrically provided with a plurality of bosses which are coplanar, the prism cover plate is also symmetrically provided with a plurality of threaded holes, the pressing ring is provided with threads corresponding to the threaded holes and can rotate in the corresponding threaded holes so as to realize the distance adjustment of the pressing ring relative to the prism, the prism cover plate covers the prism on the prism mounting seat after the prism is arranged on the prism mounting seat, the pressing ring is rotated so that a gap with the thickness of a glue layer exists between the pressing ring and the prism, glue layers are arranged on all bosses and the plane of the pressing ring, and the prism is bonded through the arranged glue layers.
Further, photographic black paper is adhered to the inner side surface of the first side plate, a top block is arranged below the bottom plate, and the top block is located at an intersection point of the two side surfaces of the first side plate and the tooling baffle plate.
Further, by trimming the plane of the trimming boss, the plane formed by the two trimming bosses forms a certain angle with the original plane, thereby playing a role in adjusting the inclination angle of the prism.
Further, the top planes of the first side plate and the second side plate of the prism installation seat are higher than the top surface of the prism by two times of the thickness of the adhesive layer.
Further, the thickness of the glue layer is 0.1mm, namely the thickness of the glue spots formed after the glue is extruded.
Further, the side surface of the base plate is provided with a threaded hole, the tool baffle is detachably connected with the base plate through a screw, the second side plate is provided with a threaded hole, a through hole is formed in the corresponding position of the tool pressing plate, and the distance between the tool pressing plate and the prism is adjusted through the screw so as to compact the prism by the tool pressing plate.
Further, the number of the bosses and the pressing rings is 3, the prism cover plate is covered on the prism mounting seat through the first side plate and the second side plate of the prism mounting seat, and the trimming boss is provided with a pin hole required by a threaded cylindrical pin.
According to a second aspect of the present invention, there is provided a prism bonding method, implemented using the prism bonding structure of any one of the above, the method comprising:
cutting a piece of photographic black paper according to the contact area and shape of the inner side surface of the first side plate and the prism, and adhering the photographic black paper to the inner side surface of the first side plate;
placing the glue point at the center of the plane of the boss and intercepting a hard silk thread with the diameter of the glue layer thickness on the boss;
Vertically placing the prism into a prism mounting seat from top to bottom, and enabling the prism to lean against the inner side surface of the first side plate and the positioning block;
The prism is pressed by using the tool baffle and the tool pressing plate, so that the prism is pressed to the inner side surface of the first side plate and the positioning block;
Placing photographic black paper with the thickness of an adhesive layer on the top surface of the prism, covering the prism cover plate, and rotating the pressing ring until the pressing ring contacts the photographic black paper;
a top block is arranged on the bottom plate of the prism installation seat, so that a certain inclination angle is formed between the prism installation seat and the horizontal plane, and the prism is pressed to the inner side surface of the first side plate and the positioning block under the dead weight;
And dismantling the fixture baffle plate and the fixture pressing plate, horizontally placing, gradually solidifying the glue, and dismantling the top block after solidification to finish the prism adhesion.
Further, the thickness of the adhesive layer is 0.1mm, namely the thickness of the adhesive spots, and the top block is positioned at the intersection point of the two side surfaces of the first side plate and the tooling baffle plate, which are arranged on the bottom plate.
Further, the glue is epoxy resin glue, and the glue quantity is calculated by the glue spot area and the glue layer thickness required by the bonding strength.
Compared with the prior art, the invention has the following advantages:
the invention provides a prism bonding structure and a bonding method, wherein the prism is reliably bonded in a prism mounting seat by adopting epoxy resin glue, and then the prism is matched with a multidirectional clamping structure of the prism mounting seat. Meanwhile, the inclination angle of the prism is accurately controlled by trimming the boss to adjust the installation plane angle, the axial position of the prism is accurately positioned by the positioning block, and the black paper is stuck on the inner side surface of the first side plate to prevent collision.
Drawings
FIG. 1 is a schematic view of a first view of a prismatic bonding structure according to an embodiment of the present invention;
FIG. 2 is a schematic view of a second view of a prismatic bonding structure according to an embodiment of the present invention;
FIG. 3 is a schematic view of a prism mount according to an example of the present invention;
fig. 4 is a schematic view of a prism of an example of the present invention.
In the figure, a 1-prism mounting seat, a 2-prism, a 3-prism cover plate, a 4-pressing ring, a 5-tool pressing plate, 6-photographic black paper, a 7-tool baffle, an 8-top block, 9-screws, an 11-trimming boss, a 12-positioning block, a 13-A plane, a 14-boss and a 41-pressing ring plane are arranged.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The invention provides a prism bonding structure, which mainly comprises a prism mounting seat 1, a prism cover plate 3, a pressing ring 4, a tooling baffle 7, a tooling pressing plate 5 and other structural members and a prism 2 as shown in fig. 1 and 2.
As shown in fig. 3, the prism mount 1 includes a bottom plate, and a first side plate and a second side plate that are disposed opposite to each other on the bottom plate, and the bottom plate, the first side plate, and the second side plate together constitute the prism mount 1. The outside of first curb plate and second curb plate all is equipped with the coping boss 5, is convenient for repair and cuts, and repair and cut means to use the grinding method, makes the local regional material of mounting plane reduce, and the mounting plane after the grinding forms certain angle with former plane to play the effect of adjustment prism inclination. Illustratively, after trimming the trimming bosses of the first side plate and the second side plate, the prism mount 1 may generate a rotation angle compared to the previous one. The trimming boss 11 is provided with a pin hole required by a GB 878 threaded cylindrical pin, so that the prism mounting seat 1 can be conveniently fixed.
The prism mounting seat 1 is provided with a positioning block 12, so that the axial position of the prism is conveniently positioned, and the axial direction refers to the normal direction of a plane on the trimming boss. The angle between the positioning block 12 and the inner surface of the first side plate is matched with the prism. After the prism 2 is installed, the top plane of the prism installation seat 1 is 0.2mm higher than the top surface of the prism 2 (which is equivalent to twice the thickness of the adhesive layer). The bottom of the prism mounting seat 1 is provided with 3 bosses 14, the 3 bosses 14 are coplanar, and the A plane 13 (namely the inner side surface of the first side plate) shown in the prism mounting seat 1 and the plane of the trimming boss 11 have perpendicularity tolerance requirements, so that the prism can be positioned. Wherein the a-plane 13 is in contact with the reflecting surface of the prism 2. As shown in fig. 4, the light enters from the entrance surface, is reflected by the reflection surface, and then exits from the exit surface.
The prism bonding structure is further provided with tools such as a tool baffle 7, a tool pressing plate 5, a top block 8 and the like, so that the prism 2 is convenient to bond and then is anti-skid. The second side plate is provided with a through groove and a threaded hole, the tool pressing plate 5 is positioned in the through groove and provided with a through hole at a corresponding position, a screw penetrates through the through hole to be inserted into the threaded hole of the second side plate, and the tool pressing plate 5 adjusts the distance between the tool pressing plate 5 and the prism 2 through the screw. The side of the prism installation seat 1, on which the tool baffle 7 is installed, is provided with a threaded hole, and the tool baffle 7 is detachably connected with the bottom plate through a screw. After the prism 2 is placed on the prism mounting seat 1, the prism 2 is pressed by using the tool baffle 7 and the tool pressing plate 5, so that the prism 2 is pressed to the inner side surface (A plane 13) of the first side plate and the positioning block 12.
Screw holes are formed in the first side plate and the second side plate of the prism installation seat 1, and the prism cover plate 3 is covered on the prism installation seat 1 through screws 9. The pressing ring 4 can rotate in the threaded hole corresponding to the prism cover plate 3, so that the distance adjustment of the pressing ring 4 relative to the prism 2 is realized, one end of the pressing ring 4 is provided with a straight slot, a straight wrench is convenient to rotate, the other end of the pressing ring is provided with a plane, and the plane 41 of the pressing ring is used for coating glue to bond the prism 2. The side prism mounting reference plane (a plane 13) of the prism mount 1 is stuck with photographic black paper 6 for preventing the collision of the prism with the metal member. The tooling pressing plate 5 and the tooling baffle 7 are abutted against the positioning surface of the prism mounting seat 1 during bonding.
The invention also provides a method for adhering the racemized prism by utilizing the prism adhering structure, which comprises the following steps:
According to the area and shape of the side prism installation reference plane (A plane 13) of the prism installation seat, cutting a piece of photographic black paper by scissors, and then adhering a small amount of south large black 703 glue to the side prism installation reference plane (A plane 13).
And secondly, using a dispensing machine to dispense epoxy resin on the centers of planes of 3 bosses on the bottom surface of the prism mounting seat to form smaller adhesive spots. The glue amount is calculated by the area and thickness of the glue spots required by the bonding strength.
Taking out hard thin line (such as fish line) with diameter of 0.1mm, cutting off a plurality of fish lines with length of about 2-3mm with scissors, placing on each glue spot with forceps, and placing one fish line section on each glue spot.
And vertically placing the prism into a prism mounting seat from top to bottom, and leaning the prism against photographic black paper and a positioning block on the plane A after placing. Care is taken to align when placed, and the prism should not translate more than 1mm when abutted against the locating surface. The glue spot is pressed into a larger circular glue spot under the dead weight of the prism, and the thickness of the glue spot is consistent with the diameter of the fish wire placed on the glue spot.
The prisms are abutted against the side prism mounting reference plane (A plane 13) and the positioning block of the prism mounting seat by using the tool pressing plate and the tool baffle plate to prop up the prisms.
Placing photographic black paper on the top surface of the prism, then screwing the prism cover plate, pressing the thread of the pressing ring to form thread glue, rotating the pressing ring until the pressing ring contacts the photographic black paper, then taking out the cover plate, taking out the photographic black paper, vertically putting the prism cover plate into the position, with the same glue amount, of the pressing ring surface point and the bottom surface point glue plane, of the pressing ring, and screwing the thread glue of the screw point.
And fourthly, installing a top block to form a certain inclination angle between the prism installation seat and the horizontal plane, and enabling the prism to lean against the side prism installation reference plane (A plane 13) and the positioning block under the dead weight.
And fifthly, horizontally placing the bottom surface of the prism, putting the prism into a drying cabinet, and then removing the fixture baffle and the fixture pressing plate for curing. And removing the top block after solidification to finish bonding.
It should be noted that each step/component described in the present application may be split into more steps/components, or two or more steps/components or part of operations of the steps/components may be combined into new steps/components, according to the implementation needs, to achieve the object of the present application.
It will be readily appreciated by those skilled in the art that the foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411829352.8A CN119439434B (en) | 2024-12-12 | 2024-12-12 | A prism bonding structure and bonding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411829352.8A CN119439434B (en) | 2024-12-12 | 2024-12-12 | A prism bonding structure and bonding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN119439434A CN119439434A (en) | 2025-02-14 |
| CN119439434B true CN119439434B (en) | 2025-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411829352.8A Active CN119439434B (en) | 2024-12-12 | 2024-12-12 | A prism bonding structure and bonding method |
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| Country | Link |
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| CN (1) | CN119439434B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201600485U (en) * | 2010-01-15 | 2010-10-06 | 张家港市光学仪器有限公司 | Cementing jig for beam-splitting prism |
| CN117471641A (en) * | 2023-12-14 | 2024-01-30 | 湖北久之洋红外系统股份有限公司 | Multidirectional pre-tightening prism mounting structure and prism mounting method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006229563A (en) * | 2005-02-17 | 2006-08-31 | Canon Inc | Fixing structure of color separation prism |
| CN114839832B (en) * | 2022-05-23 | 2023-03-14 | 歌尔光学科技有限公司 | Prism fixing structure of optical machine and projection optical machine |
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2024
- 2024-12-12 CN CN202411829352.8A patent/CN119439434B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201600485U (en) * | 2010-01-15 | 2010-10-06 | 张家港市光学仪器有限公司 | Cementing jig for beam-splitting prism |
| CN117471641A (en) * | 2023-12-14 | 2024-01-30 | 湖北久之洋红外系统股份有限公司 | Multidirectional pre-tightening prism mounting structure and prism mounting method |
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| Publication number | Publication date |
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| CN119439434A (en) | 2025-02-14 |
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