Dual-surface ultra-thin lens processing device and process

Abstract

The application provides a double-section ultra-thin lens processing device and process, wherein the device comprises an ultra-thin lens processing mechanism and an ultra-thin lens coating tool; the ultra-thin lens processing mechanism at least comprises a lens processing unit; the lens processing unit comprises a chuck assembly and a ball mold combination; the chuck assembly comprises a chuck, a locking cap and a chuck sink; the ball mold combination is provided with a curvature hole; one end of a to-be-processed cylindrical glass raw material is connected with the chuck; the other end of the to-be-processed cylindrical glass raw material is located at the curvature hole position; the length of the to-be-processed cylindrical glass is not less than 3.5 mm; the ultra-thin lens coating tool comprises a bottom plate, a cover plate and a limiting device. Through the application, the double-section ultra-thin lens with a curvature value less than 1 mm can be processed at low cost and high precision. In addition, the ultra-thin lens coating tool realizes the loading of the lens with a length value less than 1 mm, solves the collapse phenomenon of the microlens spherical surface and the plane coating, is stable in loading and is not easy to fall off, and avoids the generation of loss parts.

Description

Technical Field

[0001] This invention relates to the field of ultra-thin lens processing technology, and in particular to a double-faceted ultra-thin lens processing apparatus and process. Background Technology

[0002] Microlenses are passive optical components, primarily used in optical communication and laser technologies. The structure of a microlens is as follows: Figure 1 As shown, the microlens includes a spherical surface a, a plane b, and a cylinder c, with both spherical surface a and plane b coated with anti-reflective films. The principle of a microlens: spherical surface a receives parallel or diverging light rays. Through internal refraction and the action of the curved surface R, the light rays converge from plane b to the focal point d, thus effectively controlling the back focal length FS. Back focal length FS = [R / (n-1)] - (L / n), where R is the curvature, n is the refractive index, and L is the length. With the upgrading of the industry chain, optical devices are becoming smaller and more compact, leading to an increased demand for ultrathin lenses. The smaller the curvature of an ultrathin lens, the smaller its volume. To ensure that the back focal length FS remains constant, the refractive index n and length L need to be adjusted. Since the refractive index n of a microlens is related to the material, the length L obviously needs to be adjusted. According to the formula for calculating back focal length FS, if we want the curvature R of the ultrathin lens to be smaller while keeping the back focal length FS constant, the corresponding length L must also be smaller.

[0003] In existing technologies, to obtain ultrathin lenses with a curvature R-value of less than 1 mm, such as... Figures 2 to 3 As shown, the process involves first processing a glass sphere to form a cylindrical lens, then cutting any end face of the cylindrical lens to form a microlens. Next, the microlens is coated, and the cut surface of the coated microlens is cut to form the final ultra-thin lens. Alternatively, a lens can be formed by grinding the end face of a cylindrical glass material, cutting the cylindrical end face and cut surface, and then coating to form the final ultra-thin lens.

[0004] In the process of developing the existing technology, the inventors discovered that:

[0005] The surface curvature tolerance of the molded glass spheres cannot meet ±0.01mm, failing to meet the assembly requirements of optical devices. Customizing molded glass spheres to meet these requirements is costly. During glass sphere processing, the surface is easily damaged, requiring re-polishing, which also increases costs. The surface finish of the molded glass spheres cannot reach 40 / 20 or even 20 / 10, failing to meet the assembly requirements of optical devices. It should be noted that in the field of optical communication DEMUX, the technology of directly mounting optical components onto a platform is gradually being adopted. The relevant optical components expand and contract in the same direction relative to the platform, effectively reducing TDL (temperature-dependent losses). This necessitates cutting the cylindrical microlens to facilitate bonding to the platform.

[0006] Ultrathin lenses are fabricated using glass spheres, but the length L of the ultrathin lens is less than the diameter A of the glass sphere, limiting its length and application flexibility. In other words, the length L cannot meet the assembly requirements of optical devices. When coating microlenses with a length L less than 1 mm, the microlenses need to be fixed with high-temperature adhesive tape, which is difficult to operate, has low production efficiency, and the tape is difficult to remove, affecting the coating effect.

[0007] Furthermore, during the cutting process of the sidewalls of the coated microlens, the spherical surface a and the plane b are prone to coating chipping under the impact stress of milling. It should be noted that the reason for coating first and then cutting is that existing coating fixtures cannot meet the requirements if cutting is performed first.

[0008] In the process of forming ultra-thin lenses from cylindrical glass raw materials, when using a 20-axis lathe to grind the end face of the cylindrical glass raw material to form the lens, in order to ensure that the curvature R value is less than 1mm and the spherical surface machining swing amplitude is small, the requirements for the grinding effect of the shot are higher. Conventional shot is made of cerium oxide and copper powder in a certain ratio, which is then fired and die-cast. After purchasing commercially available shot for verification, no effective solution for the scratches on the spherical edge was found. At the same time, the shot is expensive and has a limited number of uses; after grinding 100 pieces, the shot needs to be re-refined.

[0009] Furthermore, when a column with a length L<1mm and a double-cut microlens is required to be coated on both sides, the coating requires the end face to be exposed to facilitate the uniform deposition of the coating material onto the surface. In addition, the coating process must be carried out at a high temperature of 200℃. The tooling is ultra-thin and has high strength requirements, which cannot be met by existing coating tooling.

[0010] In summary, existing double-cut ultrathin lens processing technologies and equipment are costly, have low yields, and cannot effectively mass-produce double-cut ultrathin microlenses. Summary of the Invention

[0011] This application provides a technical solution for processing double-cut ultrathin lenses, which solves the problems of high processing costs, low yield, and inability to effectively process double-cut ultrathin microlenses in large quantities in the existing double-cut ultrathin lens processing technology and equipment.

[0012] Specifically, a double-faceted ultrathin lens processing device includes: an ultrathin lens processing mechanism and an ultrathin lens coating fixture. The ultrathin lens processing mechanism includes at least a lens processing unit, which is used to process one end of the cylindrical glass raw material to be processed. The ultrathin lens coating fixture is used for coating the ultrathin lens.

[0013] The lens processing unit includes a chuck assembly and a ball mold assembly located below the chuck. The chuck assembly includes a chuck, a locking cap connected to the chuck, and a chuck recess connected to the chuck and the locking cap. The ball mold assembly has a curvature hole on its end face near the chuck assembly. The space between the chuck assembly and the ball mold assembly is used to place the cylindrical glass material to be processed. One end of the cylindrical glass material to be processed is connected to the chuck and locked by the locking cap. The other end of the cylindrical glass material to be processed is located at the curvature hole, which is used to process the other end of the cylindrical glass material to be processed into a lens with a corresponding curvature. The length of the cylindrical glass material to be processed is not less than 3.5 mm.

[0014] The ball mold assembly includes an aluminum mold and a bakelite mold with curved holes mounted on the aluminum mold. The ball mold assembly is processed by a curved hole processing unit. The curved hole processing unit specifically includes: a base for placing the ball mold assembly, a ball cutter for drilling curved holes, and a motor control device connected to the ball cutter.

[0015] The ultra-thin lens coating fixture includes a base plate, a cover plate, and a limiting device located between the base plate and the cover plate. The limiting device includes a supporting baffle, arrayed spring pieces connected to the supporting baffle, and a limiting block connected to the spring pieces. One end of the supporting baffle has a first groove, and one end of the spring pieces has a second groove corresponding to the first groove of the supporting baffle, for placing an ultra-thin lens. The other end of the spring pieces has a third groove corresponding to the second groove at one end of another spring piece, for placing an ultra-thin lens. The other end of the supporting baffle has a supporting block connected to a limiting screw. One end of the limiting block has a fourth groove corresponding to the third groove at the other end of the spring pieces, for placing an ultra-thin lens.

[0016] Furthermore, the bakelite mold mounted on the aluminum mold and having curved holes is made of phenolic resin.

[0017] Furthermore, the chuck groove is provided with a self-flowing hole, which is used to allow the polishing liquid injected into the chuck groove to flow into the curvature hole of the ball mold assembly through the self-flowing hole.

[0018] Furthermore, one end of the cylindrical glass material to be processed is connected to the chuck and locked by a locking cap, and the other end of the cylindrical glass material to be processed is located at the curvature hole position, which is used for processing the corresponding curvature lens at the other end of the cylindrical glass material to be processed. The spherical surface to be processed at the other end of the cylindrical glass material to be processed is eccentric by 45°.

[0019] Furthermore, the spring piece is provided with an oblique L-shaped cutout at the second groove position and at the fourth groove position of the limiting block.

[0020] Furthermore, the limiting device also includes a countersunk cylindrical bolt.

[0021] This application also provides a double-faceted ultrathin lens processing technology, which, using the aforementioned double-faceted ultrathin lens processing apparatus, specifically includes the following steps:

[0022] The cylindrical glass material to be processed is installed in the lens processing unit. One end of the cylindrical glass material to be processed is locked by the clamp assembly, and the other end of the cylindrical glass material to be processed is placed in the curvature hole of the ball mold assembly.

[0023] The lens processing unit, which holds the cylindrical glass material to be processed, is installed on the 20-axis machine. The 20-axis machine is started to process the lens. The ball mold assembly rotates to swing at the other end of the cylindrical glass material in the curvature hole of the ball mold assembly. At the same time, the chuck assembly swings and injects polishing liquid into the chuck groove, allowing it to flow from the gravity flow hole into the curvature hole of the ball mold assembly.

[0024] The cylindrical glass raw material to be processed after the lens processing unit is processed by a CNC surface milling machine to perform double-sided cylindrical processing.

[0025] The end face of the cylindrical glass raw material to be processed after double-cutting is processed by CNC surface milling machine;

[0026] The cylindrical glass raw material to be processed after end face processing is clamped using an ultra-thin lens coating fixture.

[0027] A coating machine is used to coat cylindrical glass raw materials that are clamped in an ultra-thin lens coating fixture.

[0028] The coated cylindrical glass raw material is unloaded from the ultra-thin lens coating fixture, and finished product inspection is carried out to finally obtain a double-cut ultra-thin lens.

[0029] Furthermore, the ratio of polishing powder to water in the polishing liquid is 1:1.

[0030] Furthermore, the curvature holes of the ball mold assembly are processed by a curvature hole processing unit, specifically including:

[0031] Place the bakelite mold on the aluminum mold;

[0032] The ball cutter is controlled by a motor control device to process curved holes on the bakelite mold;

[0033] The bakelite mold is made of phenolic resin, and the curvature of the ball cutter is the same as that of the curvature hole.

[0034] Furthermore, between clamping the cylindrical glass raw material to be processed after end face processing using the ultra-thin lens coating fixture and coating the cylindrical glass raw material to be processed clamped in the ultra-thin lens coating fixture using the coating machine, the process also includes: ultrasonic cleaning of the cylindrical glass raw material to be processed clamped in the ultra-thin lens coating fixture.

[0035] The technical solution provided in this application has at least the following beneficial effects: The double-faceted ultrathin lens processing apparatus and process provided in this application enable the low-cost and high-precision processing of double-faceted ultrathin lenses with curvature values ​​less than 1 mm. Furthermore, the use of an ultrathin lens coating fixture to load lenses with length values ​​less than 1 mm solves the problem of mold breakage after coating spherical and planar surfaces of microlenses, and ensures stable loading, preventing detachment and avoiding the generation of consumable parts. Attached Figure Description

[0036] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0037] Figure 1 This is a schematic diagram of the microlens structure provided in the embodiments of this application;

[0038] Figure 2 This is a schematic diagram of the structure of a glass ball after it has been processed into a cylindrical lens, as provided in an embodiment of this application.

[0039] Figure 3 This is a schematic diagram of a cylindrical lens structure provided in an embodiment of this application;

[0040] Figure 4 This is a schematic diagram of the bakelite mold structure provided in an embodiment of this application;

[0041] Figure 5 This is a schematic diagram of the curvature hole machining unit structure provided in an embodiment of this application;

[0042] Figure 6 This is a schematic diagram of the lens processing unit structure provided in an embodiment of this application;

[0043] Figure 7 This is a schematic diagram of the structure of the lens provided in the embodiment of this application after undergoing cylindrical double-section processing;

[0044] Figure 8 This is a schematic diagram of the structure of the lens after planar processing according to the embodiments of this application;

[0045] Figure 9 This is a schematic diagram of the ultrathin lens coating fixture structure provided in the embodiments of this application;

[0046] Figure 10This is a schematic diagram of the base plate structure provided in an embodiment of this application;

[0047] Figure 11 This is a schematic diagram of the cover plate structure provided in an embodiment of this application;

[0048] Figure 12 This is a schematic diagram of the support baffle structure provided in an embodiment of this application;

[0049] Figure 13 This is a schematic diagram of the spring structure provided in an embodiment of this application;

[0050] Figure 14 This is a schematic diagram of the limiting block structure provided in an embodiment of this application;

[0051] Figure 15 This is a schematic diagram of a double-faceted ultrathin lens structure provided in an embodiment of this application;

[0052] Figure label:

[0053] Double-faceted ultra-thin lens processing device-100;

[0054] Cylindrical glass raw material to be processed - 1;

[0055] Ultra-thin lens processing mechanism - 2; Lens processing unit - 21; Chuck assembly - 211; Chuck - 2111; Locking cap - 2112; Chuck countersink - 2113; Self-flowing hole - 2114; Ball mold assembly - 212; Aluminum mold - 2121; Bakelite mold - 2122;

[0056] Curvature hole machining unit-3; base plate-31; ball end mill-32; motor control device-33; positioning screw hole-331; hole-opening motor-332; control box and lifting stepper motor-333; slide bar-334; limit safety block-335;

[0057] Ultra-thin lens coating fixture - 4; base plate - 41; cover plate - 42; limiting device - 43; support baffle - 431; first groove - 4311; support block - 4312; spring piece - 432; second groove - 4321; oblique L-shaped cutout - 4322; third groove - 4323; limiting block - 433; fourth groove - 4331; limiting screw - 44; countersunk cylindrical bolt - 45. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0059] Example:

[0060] A process for fabricating a double-faceted ultrathin lens includes the following steps:

[0061] S101: Install the cylindrical glass material 1 to be processed into the lens processing unit 21. One end of the cylindrical glass material 1 to be processed is locked by the clamp assembly 211, and the other end of the cylindrical glass material 1 to be processed is placed in the curvature hole of the ball mold assembly 212.

[0062] Specifically, the cylindrical glass raw material 1 to be processed is a custom-made circular glass raw material with a length of not less than 3.5mm to meet the oscillation requirements of the 20-axis machine. It should be noted that the diameter of the custom-made circular glass raw material is determined according to actual needs; this application uses 0.8mm as an example.

[0063] S102: The lens processing unit 21, on which the cylindrical glass raw material 1 to be processed is installed, is mounted on the 20-axis machine and the 20-axis machine is started to perform lens processing. The ball mold assembly 212 rotates so that the other end of the cylindrical glass raw material 1 to be processed swings in the curvature hole of the ball mold assembly 212. At the same time, the chuck assembly 211 swings and injects polishing liquid into the chuck groove 2113, so that it flows into the curvature hole of the ball mold assembly 212 from the self-flowing hole 2114.

[0064] like Figure 6 As shown, the lens processing unit 21 includes a chuck assembly 211 and a ball mold assembly 212 located below the chuck 2111. The chuck assembly 211 includes a chuck 2111, a locking cap 2112 connected to the chuck 2111, and a chuck recess 2113 connected to the chuck 2111 and the locking cap 2112. The ball mold assembly 212 has a curvature hole on its end face near the chuck assembly 211. The space between the chuck assembly 211 and the ball mold assembly 212 is used to place the cylindrical glass raw material 1 to be processed.

[0065] The lens processing specifically includes: inserting one end of the cylindrical glass material 1 to be processed into the chuck 2111 and pressing it to the root inside the chuck 2111, then locking it with the chuck 2111 cap to ensure the eccentricity of the spherical surface to be processed is less than 45°. After assembly, the 20-axis machine is started, and the ball mold assembly 212 is rotated to place the exposed end face of the cylindrical glass material 1 into the curvature hole for left and right swinging processing. To ensure its smoothness, polishing liquid (polishing powder: water = 1:1) is injected into the chuck groove 2113, and a self-flowing hole 2114 is provided inside. As the chuck 2111 swings, the polishing liquid slowly flows to the curvature hole position, which plays a polishing role in the micro-curvature processing. In this way, a micro-curvature lens is obtained.

[0066] The ball mold assembly 212 includes an aluminum mold 2121 and a bakelite mold 2122 with curved holes machined onto the aluminum mold 2121. The ball mold assembly 212 is manufactured by a curved hole machining unit 3. Figure 5 As shown, the curvature hole processing unit 3 specifically includes: a base 31 for placing the ball mold assembly 212, a ball cutter 32 for drilling curvature holes, and a motor control device 33 connected to the ball cutter 32.

[0067] Specifically, the motor control device 33 includes a positioning screw hole 331 connected to the ball cutter 32, an open-hole motor 332 connected to the positioning screw hole 331, a control box and a lifting stepper motor 333 connected to the open-hole motor 332, and a slide rod 334 connected to the control box and the lifting stepper motor 333. The slide rod 334 is connected to the base platform 31, and a limit safety block 335 is also provided on the slide rod 334.

[0068] The curvature hole processing unit 3 processes the curvature hole of the bakelite mold 2122 as follows: The bakelite mold 2122 is inserted into the aluminum mold 2121 to form a ball mold assembly 212, which is then mounted and pressed onto the positioning hole of the base 31. The ball cutter 32 is inserted into the positioning screw hole 331 and locked. The height of the control box is adjusted to be higher than the limit safety block 335, and the descent depth is set to 0.5–1 mm. The motor is turned on and the speed is adjusted. Then, the control box lifting stepper motor is turned on and descends along the slide rod 334 to process the curvature hole. When the descent hits the limit safety block 335, the hole-opening motor 332 stops operating, and the control box returns to its initial position. The curvature hole of the ball mold assembly 212 is opened. The ball mold assembly 212 is then removed and placed in the lens processing unit 21 for processing micro-curved lenses. The ball cutter 32 is a custom-made curvature ball cutter 32, and the curvature hole processed on the bakelite mold 2122 is the same as that processed by the custom-made curvature ball cutter 32. The curvature value range is 0.5mm ≤ R < 1mm. The curvature hole processing unit 3 can be understood as a ball mill hole opener or a ball mold hole opener working in conjunction with the curvature processing unit to process the curvature hole.

[0069] It should be pointed out that, such as Figure 4The bakelite mold 2122 used in this application (without curved holes) is made of phenolic resin, which has high strength, is easy to drill ball grooves, is not easily worn, is readily available on the market, and is inexpensive. It also features a novel chuck 2111, into which polishing fluid is injected for spherical surface machining. This effectively solves the surface finish problems such as edge scratches in micro-curvature machining, while controlling the curvature R-value tolerance to ±0.005mm. This breakthrough in existing micro-curvature machining methods allows for mass production. Furthermore, compared to the previous shot grinding method, the cost is relatively lower.

[0070] S103: The cylindrical glass raw material 1 to be processed after being processed by lens processing unit 21 is processed by a CNC surface milling machine to perform double-sided cylindrical processing.

[0071] like Figure 7 As shown, in this process, two symmetrical sectional surfaces with respect to the axis center are formed by grinding the side wall end faces of the cylinder. Specifically, the cylinder is laid flat on the fixture and pressed down, then ground. After one side is machined, the other side is flipped over for machining. It should be noted that the grinding depth of the sectional surfaces needs to be determined based on the height of the optical axis relative to the bonding base platform, and the grinding depth should be less than D / 4, where D is the diameter of the cylinder.

[0072] S104: The cylindrical glass raw material 1 to be processed is planar processed by a CNC planar milling machine after double-sided processing.

[0073] like Figure 8 As shown, in this process, the length of the microlens is reduced by grinding the end face. The length of the thinned lens should satisfy 0.5mm ≤ L < 2mm.

[0074] It should be noted that the ultra-thin lens processing mechanism 2 includes a lens processing unit 21 and a CNC surface milling machine for processing the lens cut surfaces and planes. The ultra-thin lens processing mechanism 2 is mainly used for processing the lens end faces and planes.

[0075] S105: The cylindrical glass raw material 1 to be processed after end face processing is clamped by the ultra-thin lens coating fixture 4.

[0076] Specifically, during the coating process, both ends of the cylindrical glass raw material 1 to be processed need to be exposed to facilitate the even distribution of the evaporated material onto its surface within the coating machine. It also needs to be securely mounted to prevent the product from detaching during continuous vibrations during pre-coating ultrasonic cleaning. This requires the coating fixture to clamp the double-cut microlens product tightly.

[0077] It should be noted that the length L of the microlens = the arch height H + the clamping thickness T, the arch height H area is a spherical surface that needs to be coated; the clamping part is the thickness T.

[0078] (in: )

[0079] R = 0.5mm, L = 0.5mm, D = 0.8mm. Based on the above formulas, T = 0.2mm is obtained. This patent designs an ultra-thin lens coating fixture 4 with a thickness of 0.2mm, which can be completely locked. It is made of 304 stainless steel and is processed with a quenching process to strengthen the material strength and avoid deformation. At the same time, according to the characteristics of double-cut products, the corresponding coating fixture holes and grooves are designed to perfectly match the double-cut ultra-thin lens.

[0080] like Figures 9 to 14 The image shows the ultra-thin lens coating fixture 4 provided in this application. The ultra-thin lens coating fixture 4 is used for coating ultra-thin lenses. The ultra-thin lens coating fixture 4 includes a base plate 41, a cover plate 42, and a limiting device 43 located between the base plate 41 and the cover plate 42. The limiting device 43 includes a supporting baffle 431, arrayed spring pieces 432 connected to the supporting baffle 431, and limiting blocks 433 connected to the spring pieces 432. One end of the supporting baffle 431 has a first groove 4311, and one end of the spring pieces 432 has a second groove 4321 that corresponds to the first groove 4311 of the supporting baffle 431. Correspondingly, a third groove 4323 is provided at the other end of the spring piece 432, corresponding to the second groove 4321 at one end of the other spring piece 432, for placing the ultra-thin lens; a support block 4312 is provided at the other end of the support baffle 431, the support block 4312 is connected to the limiting screw 44, and a fourth groove 4331 is provided at one end of the limiting block 433, corresponding to the third groove 4323 at the other end of the spring piece 432, for placing the ultra-thin lens. The limiting device 43 also includes an intermediate support rod for supporting the spring piece 432. The spring piece has an oblique L-shaped cutout 4322 at the second groove position and at the fourth groove position of the limiting block.

[0081] To expose both curved and flat surfaces, a support baffle 431, a spring sheet 432, and a limiting block 433 are used to clamp the cylindrical glass raw material 1 to be processed after end face machining. Because the spring sheet 432 is ultra-thin, deformation may occur in the middle area after installation. Therefore, a central support rod is reinforced at the center of the base plate 41 to support the spring sheet 432. Support baffles 431 and limiting blocks 433 are assembled at both ends of the inner groove of the base plate 41 to connect the spring sheet 432. These three components can move freely up and down within the inner groove of the base plate 41, facilitating the installation of the cylindrical glass raw material 1 to be processed after end face machining. A cover plate 42 is used to cover the above components, and a countersunk cylindrical bolt 45 is used to lock them in place. The head of the countersunk cylindrical bolt 45 is designed with a recessed groove structure, which makes it easy for the tail of the cylindrical bolt of the previous tooling to be directly placed into the recessed groove. The two tools are spaced apart to prevent the product from being damaged, and they are also stacked together for easy turnover. The limit screw 44 is directly connected and locked to the support block 4312 of the support baffle 431 without the need for other parts to assist in locking, resulting in high assembly efficiency.

[0082] S106: The cylindrical glass raw material 1 to be processed is coated by a coating machine and is clamped in the ultra-thin lens coating fixture 4.

[0083] S107: The coated cylindrical glass raw material 1 is removed from the ultra-thin lens coating fixture 4 and inspected for finished products to finally obtain a double-cut ultra-thin lens.

[0084] It should be noted that between S106 and S107, the following is also included: ultrasonic cleaning of the cylindrical glass raw material 1 to be processed, which is clamped in the ultra-thin lens coating fixture 4.

[0085] like Figure 15 As shown, this is the final double-faceted ultrathin lens formed by processing according to this application.

[0086] It should be noted that the double-faceted ultrathin lens processing device 100 (not shown in the figure) is realized by the ultrathin lens processing mechanism 2, the ultrathin lens coating fixture 4, and other auxiliary equipment, and can be assembled into a device or equipment under certain circumstances.

[0087] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0088] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A double-faceted ultrathin lens processing device, characterized in that, Specifically, it includes: An ultra-thin lens processing mechanism and an ultra-thin lens coating fixture are provided. The ultra-thin lens processing mechanism includes at least a lens processing unit, which is used to process one end of a cylindrical glass raw material to be processed. The ultra-thin lens coating fixture is used for coating ultra-thin lenses. The lens processing unit includes a chuck assembly and a ball mold assembly located below the chuck. The chuck assembly includes a chuck, a locking cap connected to the chuck, and a chuck recess connected to the chuck and the locking cap. The ball mold assembly has a curvature hole on its end face near the chuck assembly. The space between the chuck assembly and the ball mold assembly is used to place the cylindrical glass material to be processed. One end of the cylindrical glass material to be processed is connected to the chuck and locked by the locking cap. The other end of the cylindrical glass material to be processed is located at the curvature hole, which is used to process the other end of the cylindrical glass material to be processed into a lens with a corresponding curvature. The length of the cylindrical glass material to be processed is not less than 3.5 mm. The ball mold assembly includes an aluminum mold and a bakelite mold with curved holes mounted on the aluminum mold. The ball mold assembly is processed by a curved hole processing unit. The curved hole processing unit specifically includes: a base for placing the ball mold assembly, a ball cutter for drilling curved holes, and a motor control device connected to the ball cutter. The ultra-thin lens coating fixture includes a base plate, a cover plate, and a limiting device located between the base plate and the cover plate. The limiting device includes a supporting baffle, arrayed spring pieces connected to the supporting baffle, and a limiting block connected to the spring pieces. One end of the supporting baffle has a first groove, and one end of the spring pieces has a second groove corresponding to the first groove of the supporting baffle, for placing an ultra-thin lens. The other end of the spring pieces has a third groove corresponding to the second groove at one end of another spring piece, for placing an ultra-thin lens. The other end of the supporting baffle has a supporting block connected to a limiting screw. One end of the limiting block has a fourth groove corresponding to the third groove at the other end of the spring pieces, for placing an ultra-thin lens. The bakelite mold with curved holes installed on the aluminum mold is made of phenolic resin. The chuck groove is provided with a self-flowing hole, which is used to allow the polishing liquid injected into the chuck groove to flow into the curvature hole of the ball mold assembly through the self-flowing hole. The spring piece has an oblique L-shaped cutout at the second groove position and at the fourth groove position of the limiting block.

2. The dual-faceted ultrathin lens processing apparatus according to claim 1, characterized in that, One end of the cylindrical glass material to be processed is connected to the clamp and locked by the locking cap. The other end of the cylindrical glass material to be processed is located at the curvature hole position, which is used for processing the corresponding curvature lens at the other end of the cylindrical glass material to be processed. The spherical surface to be processed at the other end of the cylindrical glass material to be processed is 45° off-center.

3. The dual-faceted ultrathin lens processing apparatus according to claim 1, characterized in that, The limiting device also includes a countersunk cylindrical bolt.

4. A double-faceted ultrathin lens processing technology, characterized in that, The double-faceted ultrathin lens processing apparatus as described in any one of claims 1 to 3 specifically includes the following steps: The cylindrical glass material to be processed is installed in the lens processing unit. One end of the cylindrical glass material to be processed is locked by the clamp assembly, and the other end of the cylindrical glass material to be processed is placed in the curvature hole of the ball mold assembly. The lens processing unit, which holds the cylindrical glass material to be processed, is installed on the 20-axis machine. The 20-axis machine is started to process the lens. The ball mold assembly rotates to swing at the other end of the cylindrical glass material in the curvature hole of the ball mold assembly. At the same time, the chuck assembly swings and injects polishing liquid into the chuck groove, allowing it to flow from the gravity flow hole into the curvature hole of the ball mold assembly. The cylindrical glass raw material to be processed after the lens processing unit is processed by a CNC surface milling machine to perform double-sided cylindrical processing. The end face of the cylindrical glass raw material to be processed after double-cutting is processed by CNC surface milling machine; The cylindrical glass raw material to be processed after end face processing is clamped using an ultra-thin lens coating fixture. A coating machine is used to coat cylindrical glass raw materials that are clamped in an ultra-thin lens coating fixture. The coated cylindrical glass raw material is unloaded from the ultra-thin lens coating fixture, and finished product inspection is carried out to finally obtain a double-cut ultra-thin lens.

5. The double-faceted ultrathin lens processing technology according to claim 4, characterized in that, The ratio of polishing powder to water in the polishing liquid is 1:

1.

6. The double-faceted ultrathin lens processing technology according to claim 4, characterized in that, The curvature holes of the ball mold assembly are processed by a curvature hole processing unit, specifically including: Place the bakelite mold on the aluminum mold; The ball cutter is controlled by a motor control device to process curved holes on the bakelite mold; The bakelite mold is made of phenolic resin, and the curvature of the ball cutter is the same as that of the curvature hole.

7. The double-faceted ultrathin lens processing technology according to claim 4, characterized in that, Between clamping the cylindrical glass raw material to be processed after end face processing using an ultra-thin lens coating fixture and coating the cylindrical glass raw material clamped in the ultra-thin lens coating fixture using a coating machine, the process also includes: Ultrasonic cleaning is performed on cylindrical glass raw materials to be processed, which are clamped in an ultra-thin lens coating fixture.

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