A coating device for plastic hemispherical optical elements

Abstract

The utility model relates to a film plating technical field, concretely relates to a kind of film plating device of plastic hemispherical optical element, including main shaft and from lower to upper fixed sequentially on the lower base plate, fixed plate and upper base plate of the main shaft;The main shaft is also rotatably connected with a rotating plate, the rotating plate is between the lower base plate and fixed plate;Several sliding openings are opened in the rotating plate, a sliding column is arranged in the sliding opening;Several sliders that can be away from the main shaft along straight line are provided on the fixed plate, the lower surface of the inner end of the slider is fixed with a limit block for limiting optical element, the main shaft is connected with the slider by first spring between.The utility model can be clamped to different size diameter plastic hemispherical optical element, improve the singleness of original special film plating tool, and the quick assembly of fast connection component facilitates the quick assembly with external rotating mechanism, improves installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of coating technology, specifically to a coating device for a plastic hemispherical optical element. Background Technology

[0002] Optical coating technology for plastic hemispherical optical elements is one of the core processes ensuring the performance of lidar systems. Its basic principle is based on the optical interference effect. By precisely controlling the coating thickness (typically 1 / 4 of the laser wavelength), destructive interference occurs between the reflected and incident light, thereby reducing the reflectivity of a specific wavelength from 5% to below 0.2%, significantly improving transmittance (>95%). It also possesses environmental protection features (waterproof, stain-resistant, and abrasion-resistant) to cope with the harsh conditions of automotive or industrial environments. This technology directly affects the detection accuracy, environmental adaptability, and lifespan of lidar, playing an irreplaceable role in fields such as autonomous driving and industrial measurement.

[0003] Currently, the coating of plastic hemispherical optical components is carried out in a vacuum optical coating dome machine. The equipment functions to perform the coating in a vacuum environment. The coating material is vaporized by means of resistance, electron beam or laser heating, and the gaseous particles migrate in a straight line to the surface of the substrate in the vacuum environment to form the coating.

[0004] The assembly and fixation of existing plastic hemispherical optical components require the use of special coating fixtures of different sizes with screws and clamps, depending on their diameter. The planetary disk mechanism used in the dome cover machine is complex, resulting in a very large workload. In particular, when making domes of different sizes, the existing coating fixtures cannot be compatible with domes of different diameters for assembly and fixation, resulting in low production costs and low output efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a coating device for multi-size compatible plastic hemispherical optical elements.

[0006] This utility model provides the following technical solution:

[0007] This utility model proposes a coating device for a plastic hemispherical optical element, including a main shaft and a lower substrate, a fixed plate, and an upper substrate fixed on the main shaft from bottom to top; a rotating plate is also rotatably connected to the main shaft, and the rotating plate is located between the lower substrate and the fixed plate.

[0008] The rotating plate has several sliding openings, and a sliding column is provided in each sliding opening;

[0009] The fixed plate is provided with a plurality of sliding members that can move away from the main shaft along a straight line. The sliding column is fixed to the lower surface of the inner end of the sliding member, and a limiting block for limiting the optical element is fixed to the lower surface of the outer end of the sliding member. The main shaft and the sliding member are connected by a first spring.

[0010] Furthermore, the sliding openings are arc-shaped, and there are three of them, evenly distributed around the main axis.

[0011] Furthermore, the lower substrate is provided with a clearance opening to avoid the limiting block.

[0012] Furthermore, the fixed plate has a linear sliding opening, and both sides of the sliding member have linear sliding grooves that restrict the linear sliding opening.

[0013] Furthermore, the lower end of the limiting block extends inward with a protrusion for clamping the outer edge of the optical element.

[0014] Furthermore, it also includes a protective cover, which is fixedly connected to the upper and lower base plates to protect the components between the upper and lower base plates; the outer end of the limiting block is fixed with a lifting screw, and the protective cover has an opening for the lifting screw to extend out of the protective cover.

[0015] Furthermore, a quick-connect assembly is also fixed on the upper surface of the upper substrate. The quick-connect assembly includes a connecting block fixed on the upper substrate. A second spring is fixed inside the connecting block. A sliding main rod is fixed at the other end of the second spring. A pressing block is fixed at the other end of the sliding main rod. The pressing block extends out of the connecting block.

[0016] The connecting block is provided with a rotating shaft for mounting on an external rotating mechanism above it, and a pair of mating joints are fixed at the lower end of the rotating shaft; the connecting block is provided with a mating groove for the mating joints to be installed, and the sliding main rod is between the mating joints and connected to the mating groove;

[0017] The cross-section of the connector is I-shaped, and the middle part of the sliding main rod has a groove to avoid the upper and lower ends of the connector.

[0018] Compared with the prior art, this utility model can clamp plastic hemispherical optical elements of different diameters, improve the uniformity of the original dedicated coating fixture, reduce the cost of coating fixtures, and facilitate the quick assembly with external rotating mechanisms, improving the original dedicated coating fixtures that use screws for fixing and increasing installation efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the actual application structure of this utility model. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the actual application structure of this utility model. Figure 2 .

[0021] Figure 3 This is a schematic diagram of the exploded structure of an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the exploded structure of a quick-connect assembly.

[0023] Figure 5 This is a schematic diagram of the connecting block structure.

[0024] Figure 6 This is a schematic diagram of the sliding component structure.

[0025] Figure 7 This is a schematic diagram of the actual application structure of this utility model. Figure 3 (The protective cover and product are omitted from this picture.)

[0026] Figure 8 This is a schematic diagram of the actual application structure of this utility model. Figure 4 (The protective cover, lower substrate, and product are omitted from this figure.)

[0027] Figure 9 This is a schematic diagram of the quick-connect assembly.

[0028] In the diagram, 00-Product (plastic hemispherical optical element); 01-Rotating structure; 1-Main shaft; 2-Lower substrate; 21-Allowing opening; 3-Fixing plate; 31-Straight sliding groove; 4-Upper substrate; 5-Rotating plate; 51-Sliding opening; 6-Sliding component; 61-Sliding column; 62-Limiting block; 621-Protrusion; 63-Straight sliding groove; 7-Protective cover; 71-Probe outlet; 8-First spring; 9-Flat head screw; 10-Lifting lug screw; 11-Quick connector assembly; 111-Connecting block; 112-Second spring; 113-Sliding main rod; 114-Pressing block; 115-Rotating shaft; 116-Matching joint; 117-Matching groove; 118-Groove; 119-Sliding hole; 120-Pressing groove; 121-Fixing block; 12-Bearing. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings.

[0030] See Figure 2 , Figure 3 and Figure 7 In one embodiment of the present invention, a coating device for a plastic hemispherical optical element includes a main shaft 1 and a lower substrate 2, a fixing plate 3 and an upper substrate 4 fixed on the main shaft 1 from bottom to top; a rotating plate 5 is also rotatably connected to the main shaft 1, and the rotating plate 5 is located between the lower substrate 2 and the fixing plate 3.

[0031] The rotating plate 5 is provided with a plurality of sliding openings 51, and a sliding column 61 is provided in each sliding opening 51.

[0032] The fixed plate 3 is provided with a plurality of sliding members 6 that can move away from the main shaft 1 along a straight line. The sliding column 61 is fixed to the lower surface of the inner end of the sliding member 6, and a limiting block 62 for limiting the optical element 00 is fixed to the lower surface of the outer end of the sliding member 6. The main shaft 1 and the sliding member 6 are connected by a first spring 8.

[0033] In practical applications, when the limit block 62 is manually pushed, the first spring 8 is stretched, placing the product 00 under the lower substrate 2. After releasing the hand, the elastic potential energy of the first spring 8 is used to restrict the product 00 under the lower substrate 2.

[0034] See Figure 8 In one embodiment of this utility model, the main shaft 1 and the rotating plate 5 are rotatably connected by a bearing 12.

[0035] See Figure 3 In one embodiment of this utility model, a flat-head screw 9 is fixed on the sliding member 6, one end of the first spring 8 is fixed to the main shaft 1, and the other end of the first spring 8 is fixed to the flat-head screw 9.

[0036] See Figure 3 or Figure 8 In one embodiment of this utility model, the sliding opening 51 is arc-shaped, and there are three of them, which are evenly arranged around the main shaft 1; the three limiting blocks 62 ensure that the product 00 can be firmly limited under the lower base plate 2; when one of the sliding pillars 61 moves in the sliding opening 51, the rotating plate 5 rotates, and at the same time drives the other two sliding pillars 61 to move.

[0037] Please continue reading. Figure 3 In one embodiment of the present invention, the lower substrate 2 is provided with an avoidance opening 21 to avoid the limiting block 62.

[0038] Please continue reading. Figure 3 In one embodiment of this utility model, the fixed plate 3 is provided with a linear sliding opening 31, and both sides of the sliding member 6 are provided with linear sliding grooves 63 that restrict the linear sliding opening 31.

[0039] See Figure 6 In one embodiment of the present invention, the lower end of the limiting block 62 extends inwardly with a protrusion 621 for clamping the outer edge of the optical element 00.

[0040] See Figure 1 and Figure 3In one embodiment of this utility model, a protective cover 7 is also included. The protective cover 7 is fixedly connected to the upper and lower base plates (4 and 2) to protect the components between the upper and lower base plates (4 and 2). The outer end of the limiting block 62 is fixed with a lifting screw 10. The protective cover 7 has an opening 71 for the lifting screw 10 to extend out of the protective cover 7. In practical applications, a soft rope is looped around the lifting screw 10, and the sliding member 6 is pulled outward by hand with the soft rope. The other sliding members 61 move along with the rotating disk 5 and the sliding column 61.

[0041] See Figure 1 and Figure 4 In one embodiment of the present invention, a quick-connect assembly 11 is also fixed on the upper surface of the upper substrate 4. The quick-connect assembly includes a connecting block 111 fixed on the upper substrate 4. A second spring 112 is fixed inside the connecting block 111. A sliding main rod 113 is fixed at the other end of the second spring 112. A pressing block 114 is fixed at the other end of the sliding main rod 113. The pressing block 114 extends out of the connecting block 111.

[0042] A rotating shaft 115 for mounting on an external rotating mechanism is provided above the connecting block 111, and a pair of mating joints 116 are fixed at the lower end of the rotating shaft 115; a mating groove 117 for the mating joints 116 is provided on the connecting block 111; the sliding main rod 113 is between the mating joints 116 and is connected to the mating groove 117.

[0043] See Figure 4 The cross-section of the connector 116 is I-shaped, and the middle part of the sliding main rod 113 is provided with a groove 118 to avoid the upper and lower ends of the connector 116;

[0044] See Figure 4 and 9 When it is necessary to disassemble the connecting block 111 from the rotating shaft 115, press the pressing block 114 to connect the groove 118 to the mating groove 117, and then the connecting block 111 and the rotating shaft 115 can be disassembled. When it is necessary to install and connect the connecting block 111 and the rotating shaft 115, press the pressing block 114, the second spring 112 is compressed, the groove 118 connects to the mating groove 117, and the mating connector 116 is installed into the mating groove 117. Then release the pressing block 114, and use the elastic potential of the compressed second spring 112 to push the sliding main rod 113, so that the groove 118 is not connected to the mating groove 117, thus completing the limiting and fixing.

[0045] In the above embodiments, see Figure 4 and Figure 5The connecting block 111 has a sliding hole 119 for mounting the sliding main rod 113, and the sliding hole 119 is connected to the docking groove 117.

[0046] In the above embodiments, see Figure 5 The connecting block 111 has a pressing groove 120 for mounting the pressing block 114.

[0047] In the above embodiment, the lower end of the rotating shaft 115 is fixed to the connector 116 by a fixing block 121.

[0048] In practical applications, a soft rope is looped onto the lifting screw 10, and the slider 6 is pulled outward by hand to provide assistance. The cooperation between the rotating disk 5 and the sliding column 61 enables the other sliding columns 61 to move accordingly. The first spring 8 is stretched, and the product 00 is placed under the lower base plate 2. After releasing the hand, the elastic potential of the first spring 8 is used to restrict the product 00 under the lower base plate 2.

[0049] When it is necessary to disassemble the connecting block 111 from the rotating shaft 115, press the pressing block 114, compress the second spring 112, so that the groove 118 connects with the mating groove 117, and then the connecting block 111 and the rotating shaft 115 can be disassembled. When it is necessary to install and connect the connecting block 111 and the rotating shaft 115, press the pressing block 114, compress the second spring 112, so that the groove 118 connects with the mating groove 117, and install the mating connector 116 into the mating groove 117. Then release the pressing block 114, and use the spring force of the compressed second spring 112 to push the sliding main rod 113, so that the groove 118 does not connect with the mating groove 117, thus completing the limiting and fixing.

[0050] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

Claims

1. A coating apparatus for a plastic hemispherical optical element, characterized in that: It includes a main shaft and a lower base plate, a fixed plate, and an upper base plate, which are fixed to the main shaft from bottom to top; a rotating plate is also rotatably connected to the main shaft, and the rotating plate is located between the lower base plate and the fixed plate. The rotating plate has several sliding openings, and a sliding column is provided in each sliding opening; The fixed plate is provided with a plurality of sliding members that can move away from the main shaft along a straight line. The sliding column is fixed to the lower surface of the inner end of the sliding member, and a limiting block for limiting the optical element is fixed to the lower surface of the outer end of the sliding member. The main shaft and the sliding member are connected by a first spring.

2. The coating apparatus for a plastic hemispherical optical element according to claim 1, characterized in that: The sliding openings are arc-shaped, and there are three of them, evenly distributed around the main axis.

3. The coating apparatus for a plastic hemispherical optical element according to claim 1, characterized in that: The lower substrate has a corresponding clearance opening to avoid the limiting block.

4. The coating apparatus for a plastic hemispherical optical element according to claim 1, characterized in that: The fixed plate has a linear sliding opening, and both sides of the sliding member have linear sliding grooves that restrict the linear sliding opening.

5. The coating apparatus for a plastic hemispherical optical element according to claim 1, characterized in that: The lower end of the limiting block extends inward with a protrusion for clamping the outer edge of the optical element.

6. The coating apparatus for a plastic hemispherical optical element according to claim 1, characterized in that: It also includes a protective cover, which is fixedly connected to the upper and lower base plates to protect the components between the upper and lower base plates; the outer end of the limiting block is fixed with a lifting screw, and the protective cover has an opening for the lifting screw to extend out of the protective cover.

7. The coating apparatus for a plastic hemispherical optical element according to claim 1, characterized in that: The upper surface of the upper substrate is also fixed with a quick-connect assembly. The quick-connect assembly includes a connecting block fixed on the upper substrate. A second spring is fixed inside the connecting block. A sliding main rod is fixed at the other end of the second spring. A pressing block is fixed at the other end of the sliding main rod. The pressing block extends out of the connecting block. The connecting block is provided with a rotating shaft for mounting on an external rotating mechanism above it, and a pair of mating joints are fixed at the lower end of the rotating shaft; the connecting block is provided with a mating groove for the mating joints to be installed, and the sliding main rod is between the mating joints and connected to the mating groove; The cross-section of the connector is I-shaped, and the middle part of the sliding main rod has a groove to avoid the upper and lower ends of the connector.

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