An optical lens coating device and a coating method

Abstract

The present invention relates to the technical field of coating devices, and discloses an optical lens coating device and a coating method. Among them, an optical lens coating device includes a vacuum chamber, a sputtering coating component arranged at the bottom of the vacuum chamber, a rotating table arranged at the top of the vacuum chamber, a sandwich collar arranged on the rotating table, and a placement groove formed on the outer wall of the sandwich collar for placing lenses. A housing is arranged on the outer wall of the sandwich collar, and the sandwich collar slides inside the housing. A correction component for assisting in correcting the position of the lens is arranged inside the housing. This optical lens coating device can effectively eliminate the slight tilt or uneven placement state of the lens, enabling the lens to slide naturally or adjust to the correct placement position.

Description

Technical Field

[0001] The present invention relates to the technical field of coating devices, and particularly to an optical lens coating device and a coating method. Background Art

[0002] In the field of optics, as the requirements for imaging quality of modern optical devices are getting higher and higher, the surface coating technology of lenses has become one of the key means to improve lens performance. By depositing one or more functional thin films on the lens surface, optical coating can effectively reduce light reflection, increase transmittance, enhance the imaging quality of optical systems, and endow the lens with properties such as wear resistance, water resistance, and corrosion resistance. Therefore, optical coating technology is widely used in devices such as camera lenses, microscopes, telescopes, and glasses.

[0003] Refer to Figures 1-3 , traditional optical lens coating devices usually include a vacuum chamber to control environmental conditions and reduce the influence of impurities in the air on the coating process. During the coating preparation process, the staff first uses tweezers to place the lens on the sandwich collar, and checks whether there are contaminants such as dust, fingerprints, oil stains, and tiny particles on the lens surface by observing the reflected light under light conditions. Subsequently, the sandwich collar with the lens is fixed on the rotating table to ensure that the thin film can be evenly distributed during the coating process. The lens usually needs to rotate continuously during the coating process. Finally, the coating material is heated to the vaporization state or deposited on the lens surface by sputtering process to form the required thin film layer.

[0004] When dealing with lenses of larger specifications, the staff can easily and steadily place the lenses on the sandwich collar by using tweezers. However, when dealing with some small-sized lenses (such as fisheye lens lenses), due to the small size and light weight of these lenses, the operation difficulty is increased. When using tweezers to place small lenses, it is often difficult to ensure that the lenses can be placed flat in the placement groove of the sandwich collar. In addition, the structural design of the sandwich collar in the prior art is relatively fixed, lacking an automatic correction function for small lenses, so the lenses are prone to slight inclination in the placement groove. This inclination will directly affect the uniformity of the thin film during the coating process, resulting in inconsistent film thickness on the lens surface, and further affecting the optical performance of the lens. Summary of the Invention

[0005] In view of the problem in the prior art that it is often difficult to ensure that the lens can be placed flat in the placement groove of the sandwich collar when using tweezers to place small lenses, an optical lens coating device and a coating method are proposed.

[0006] On the one hand, the present application provides an optical lens coating device, and its purpose is to solve the problems of easy inclination and uneven film layer during the placement and coating of small-sized lenses.

[0007] The technical solution of the present invention is as follows: An optical lens coating device includes a vacuum chamber, a sputtering coating component arranged at the bottom of the vacuum chamber, a rotating table arranged at the top of the vacuum chamber, a sandwich collar arranged on the rotating table, and a placement groove opened on the outer wall of the sandwich collar for placing a lens. A housing is arranged on the outer wall of the sandwich collar, and the sandwich collar slides inside the housing. A correction component for assisting in correcting the position of the lens is arranged inside the housing; the correction component includes a guiding rod arranged on the bottom surface of the sandwich collar, a first through hole opened on the inner wall of the housing for the guiding rod to slide through, a movable plate arranged on the rod wall of the guiding rod, and a second through groove opened on the outer wall of the movable plate. The movable plate is elastically connected to the sandwich collar and elastically connected to the housing. The inner diameter of the second through groove is larger than the inner diameter of the placement groove; the correction component further includes an installation groove opened on the top surface of the housing, a baffle arranged inside the installation groove, an extrusion plate arranged on the side wall of the baffle, and a reset elastic piece arranged on the inner wall of the installation groove. One end of the reset elastic piece far from the inner wall of the installation groove is fixedly connected to the outer wall of the extrusion plate, and the extrusion plate slides inside the installation groove.

[0008] Further, the sputtering coating component includes a sputtering target arranged at the bottom of the vacuum chamber, a plasma source arranged at the bottom of the vacuum chamber, and an inert gas introduction system arranged outside the vacuum chamber.

[0009] Further, the correction component further includes a second through hole opened on the outer wall of the movable plate for the guiding rod to slide through.

[0010] Further, the correction component further includes a first elastic member sleeved on the rod wall of the guiding rod and a second elastic member sleeved on the rod wall of the guiding rod. One end of the first elastic member is fixedly connected to the bottom surface of the movable plate, the other end of the first elastic member is fixedly connected to the inner wall of the housing, one end of the second elastic member is fixedly connected to the bottom surface of the sandwich collar, and the other end of the second elastic member is fixedly connected to the top surface of the movable plate.

[0011] Further, the correction component further includes a fixing groove opened on the outer wall of the housing, a clamping groove opened on the inner wall of the fixing groove, an arc groove opened on the inner wall of the fixing groove, a spherical groove opened on the outer wall of the movable plate, and a positioning member arranged inside the fixing groove. The positioning member is made of an elastic material.

[0012] Further, the positioning member includes a fixed end, a vertical portion, a first positioning portion, a second positioning portion, a bending portion, a reinforcing portion, and a free end. The top surface of the fixed end is fixedly connected to the inner wall of the fixing groove. The shape of the first positioning portion is adapted to the shape of the spherical groove. The reinforcing portion is clamped inside the clamping groove, and the free end is located outside the fixing groove.

[0013] Further, the second positioning portion is arranged in an inverted character shape.

[0014] Furthermore, an ejecting member for assisting in taking out the lens is also provided on the movable plate.

[0015] Furthermore, the ejecting member includes a first through groove formed in the inner wall of the placement groove and a ejecting rod provided on the top surface of the movable plate, and the position of the ejecting rod corresponds to the position of the first through groove.

[0016] Furthermore, the present invention also provides an optical lens coating method, including the following steps.

[0017] During the pre-coating preparation process, the staff first uses tweezers to place the small-sized lens on the sandwich collar, and then the staff holds the accommodating shell with both hands and presses the sandwich collar downward with the thumbs. When the staff hears a sound, the sandwich collar is released.

[0018] After the staff releases the sandwich collar, the top surface of the sandwich collar can collide with the bottom surfaces of the multiple baffles, so that the lens on the sandwich collar achieves a small-amplitude vibration effect.

[0019] Subsequently, the sandwich collar is fixed on the rotating table, and the vacuum chamber is pumped to a low-pressure vacuum state, and then a uniform thin film layer is gradually formed on the surface of the lens through the sputtering coating component.

[0020] After the coating is completed and the lens needs to be removed from the sandwich collar, the staff presses the sandwich collar downward forcefully again. Through the provided ejecting member, the lens inside the placement groove can be lifted upward, facilitating the staff to remove the lens on the sandwich collar.

[0021] Advantages of the present invention:

[0022] When the staff holds the accommodating shell by hand and presses the sandwich collar downward, the sandwich collar has a tendency to reset upward. At the same time, when the sandwich collar moves downward and separates from the baffle, the multiple baffles move in the opposite direction under the action of the elastic force of the reset elastic pieces. The multiple baffles move above the sandwich collar. Furthermore, when the staff releases the sandwich collar, the sandwich collar moves upward to reset. Due to the presence of the baffle, the distance that the sandwich collar can move upward is shortened. Therefore, the top surface of the sandwich collar can collide with the bottom surfaces of the multiple baffles, so that the sandwich collar achieves a small-amplitude vibration effect. This vibration can effectively eliminate the slight tilt or uneven placement state of the lens, enabling the lens to slide naturally or adjust to the correct placement position.

[0023] Through the cooperation of multiple first positioning parts, the position of the movable plate can be temporarily fixed, and the movable plate will not move upward due to the elastic force of the first elastic part. Furthermore, it can further facilitate the staff to control the amplitude of the vibration of the sandwich collar. When the first positioning part is inserted into the spherical groove and makes a sound, it can prompt the staff to release the sandwich collar, avoiding the phenomenon that the position of the lens deviates violently due to the excessive vibration amplitude of the sandwich collar.

[0024] Through the arranged ejecting part, the horizontal section of the second positioning part can move above the sandwich collar, effectively preventing the sandwich collar and the movable plate from moving upward. At the same time, multiple ejecting rods on the movable plate can pass through the first through groove to lift the lens in the placing groove upward, thereby effectively protecting the edge part of the lens and facilitating the staff to remove the lens on the sandwich collar, effectively reducing the damage caused to the edge part of the lens by the tweezers when taking the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the state when placing a lens in the prior art;

[0026] Figure 2 is a schematic installation diagram of the sandwich collar in the prior art;

[0027] Figure 3 is a schematic installation diagram of the sputtering coating part in the prior art;

[0028] Figure 4 is a perspective view of the present invention;

[0029] Figure 5 is a cross-sectional view of the accommodating shell in the present invention;

[0030] Figure 6 is of the present invention Figure 5 magnified schematic view at A;

[0031] Figure 7 is a schematic installation diagram of the movable plate in the present invention;

[0032] Figure 8 is a perspective view of the sandwich collar in the present invention;

[0033] Figure 9 is a perspective view of the movable plate in the present invention;

[0034] Figure 10 is a cross-sectional view of the accommodating shell in the present invention;

[0035] Figure 11 is of the present invention Figure 5 magnified schematic view at B;

[0036] Figure 12 is a perspective view of the positioning part in the present invention.

[0037] In the figure:

[0038] 1. Sandwich sleeve ring; 2. Placement groove; 3. Rotating table; 4. Vacuum chamber; 5. Sputtering coating component; 6. Accommodating shell; 7. Guide rod; 8. First through hole; 9. Movable plate; 10. Second through hole; 11. First elastic member; 12. Second elastic member; 13. Installation groove; 14. Baffle; 15. Extrusion plate; 16. Reset elastic piece; 17. First through slot; 18. Thrust rod; 19. Second through slot; 20. Arc groove; 21. Fixed groove; 22. Card slot; 23. Spherical groove; 24. Positioning member; 25. Fixed end; 26. Vertical portion; 27. First positioning portion; 28. Second positioning portion; 29. Bending portion; 30. Reinforcing portion; 31. Free end. Specific implementation mode

[0039] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the specific implementation mode of the present invention will be described in detail below with reference to the accompanying drawings of the specification.

[0040] Example 1, referring to Figures 1-10 , which is the first embodiment of the present invention, provides an optical lens coating device, including a vacuum chamber 4, a sputtering coating component 5 arranged at the bottom of the vacuum chamber 4, a rotating table 3 arranged at the top of the vacuum chamber 4, a sandwich sleeve ring 1 arranged on the rotating table 3, and a placement groove 2 opened on the outer wall of the sandwich sleeve ring 1 for placing the lens. An accommodating shell 6 is arranged on the outer wall of the sandwich sleeve ring 1, and the sandwich sleeve ring 1 slides inside the accommodating shell 6. A correction component for assisting in correcting the position of the lens is arranged inside the accommodating shell 6. The sputtering coating component 5 includes a sputtering target arranged at the bottom of the vacuum chamber 4, a plasma source arranged at the bottom of the vacuum chamber 4, and an inert gas introduction system arranged outside the vacuum chamber 4.

[0041] Specifically, the sputtering target is a key component for storing the coating material, usually made of high-purity metal, alloy or compound. The target material is installed at a specific position at the bottom of the vacuum chamber 4. The plasma source is responsible for forming plasma in the vacuum chamber 4. Inert gas (such as argon) is introduced through the inert gas introduction system to generate plasma, and the plasma is accelerated into a high-energy ion stream. When the high-energy ion stream bombards the target material, the atoms of the target material will be excited and flow along the plasma, and finally deposit on the surface of the lens. Among them, the vacuum chamber 4, the rotating table 3 and the sputtering coating component 5 are all mature existing technologies, and will not be elaborated here too much.

[0042] Through the provided calibration component, the sandwich collar 1 can vibrate slightly inside the housing 6, and this vibration can exert a slight mechanical perturbation on the lens placed in the placement groove 2. Since the lens is a small-sized object that requires precise placement, this vibration can effectively eliminate the slight inclination or uneven placement state of the lens, enabling the lens to slide or adjust naturally to the correct placement position.

[0043] Referring to Figures 1-10 , the calibration component includes a guide rod 7 fixedly installed on the bottom surface of the sandwich collar 1, a first through hole 8 opened on the inner wall of the housing 6 for the guide rod 7 to slide through, a movable plate 9 slidably installed on the rod wall of the guide rod 7, and a second through groove 19 opened on the outer wall of the movable plate 9. Moreover, the movable plate 9 is elastically connected to the sandwich collar 1, the movable plate 9 is elastically connected to the housing 6, and the inner diameter of the second through groove 19 is larger than the inner diameter of the placement groove 2; the calibration component further includes a mounting groove 13 opened on the top surface of the housing 6, a baffle 14 slidably installed inside the mounting groove 13, a pressing plate 15 fixedly installed on the side wall of the baffle 14, and a return spring piece 16 fixedly installed on the inner wall of the mounting groove 13. And one end of the return spring piece 16 away from the inner wall of the mounting groove 13 is fixedly connected to the outer wall of the pressing plate 15, and the pressing plate 15 slides inside the mounting groove 13; the calibration component further includes a second through hole 10 opened on the outer wall of the movable plate 9 for the guide rod 7 to slide through.

[0044] Specifically, through the cooperation among the guide rod 7, the first through hole 8, the movable plate 9, and the second through hole 10, the sandwich collar 1 and the movable plate 9 can only slide vertically inside the housing 6 without deflection, ensuring the stability of the slight vibration of the sandwich collar 1 and improving the accuracy during lens calibration.

[0045] Since the movable plate 9 is elastically connected to the sandwich collar 1, the movable plate 9 is elastically connected to the housing 6, and the return spring piece 16 is in a compressed state initially, when a staff member holds the housing 6 by hand and presses the sandwich collar 1 downward, the sandwich collar 1 has a tendency to reset upward. At the same time, when the sandwich collar 1 moves downward and separates from the baffle 14, multiple baffles 14 move in opposite directions under the action of the elastic force of the return spring piece 16, and the multiple baffles 14 move above the sandwich collar 1. Furthermore, when the staff member releases the sandwich collar 1, the sandwich collar 1 moves upward for reset. Due to the presence of the baffle 14, the distance that the sandwich collar 1 can move upward is shortened, so the top surface of the sandwich collar 1 can collide with the bottom surfaces of the multiple baffles 14, enabling the sandwich collar 1 to achieve the effect of slight vibration.

[0046] Referring to Figures 5-6, the calibration component further includes a first elastic member 11 sleeved on the rod wall of the guide rod 7 and a second elastic member 12 sleeved on the rod wall of the guide rod 7. One end of the first elastic member 11 is fixedly connected to the bottom surface of the movable plate 9, and the other end of the first elastic member 11 is fixedly connected to the inner wall of the accommodating shell 6. One end of the second elastic member 12 is fixedly connected to the bottom surface of the sandwich collar 1, and the other end of the second elastic member 12 is fixedly connected to the top surface of the movable plate 9.

[0047] Specifically, the first elastic member 11 and the second elastic member 12 can be common compression springs or return springs in the prior art. Here, a compression spring is preferably used. When the staff holds the accommodating shell 6 by hand and presses the sandwich collar 1 downward, the sandwich collar 1 first squeezes the second elastic member 12, and then the second elastic member 12 pushes the movable plate 9 to move downward, and the movable plate 9 squeezes the first elastic member 11.

[0048] Working principle:

[0049] During the preparation process before coating when placing the lens, the staff first uses tweezers to place the small-sized lens on the sandwich collar 1. Then the staff holds the accommodating shell 6 with both hands and presses the sandwich collar 1 downward with the thumb, which can drive the sandwich collar 1 to move downward. During the downward movement of the sandwich collar 1, after the position of the sandwich collar 1 is separated from the plurality of baffles 14, the plurality of baffles 14 move in the opposite direction under the action of the elastic force of the return elastic pieces 16, so that the plurality of baffles 14 can move above the sandwich collar 1 to block the sandwich collar 1. Furthermore, when the staff releases the sandwich collar 1, the sandwich collar 1 moves upward to reset under the action of the elastic forces of the first elastic member 11 and the second elastic member 12. Due to the presence of the baffles 14, the upward movement distance of the sandwich collar 1 is shortened, so the top surface of the sandwich collar 1 can collide with the bottom surfaces of the plurality of baffles 14, enabling the lens on the sandwich collar 1 to achieve a small-amplitude vibration effect. This vibration can effectively eliminate the slight inclination or uneven placement state of the lens, and make the lens slide naturally or adjust to the correct placement position.

[0050] Embodiment 2, refer to Figures 1-12 , which is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the calibration component further includes a fixing groove 21 opened on the outer wall of the accommodating shell 6, a clamping groove 22 opened on the inner wall of the fixing groove 21, an arc groove 20 opened on the inner wall of the fixing groove 21, a spherical groove 23 opened on the outer wall of the movable plate 9, and a positioning member 24 arranged inside the fixing groove 21, and the positioning member 24 is made of an elastic material.

[0051] Specifically, the fixing groove 21, the clamping groove 22, and the arc groove 20 provide installation and movement spaces for the positioning member 24.

[0052] Refer to Figure 12, the positioning member 24 includes a fixed end 25, a vertical portion 26, a first positioning portion 27, a second positioning portion 28, a bending portion 29, a reinforcing portion 30, and a free end 31. The top surface of the fixed end 25 is fixedly connected to the inner wall of the fixed groove 21. The shape of the first positioning portion 27 is adapted to the shape of the spherical groove 23. The reinforcing portion 30 is clamped inside the card slot 22, and the free end 31 is located outside the fixed groove 21.

[0053] Specifically, the positioning member 24 can be made of elastic materials such as spring steel and stainless steel, with good fatigue resistance and suitable for frequent elastic reset operations. The first positioning portion 27 is hemispherical. When the movable plate 9 descends, the bottom surface of the movable plate 9 first pushes the first positioning portion 27 to move away from the movable plate 9. Until the position of the spherical groove 23 corresponds to the position of the first positioning portion 27, under the action of the elastic force of the material of the positioning member 24 itself, it can drive the vertical portion 26 and the first positioning portion 27 to reset, and then insert the first positioning portion 27 into the spherical groove 23. Also, because multiple fixing grooves 21, card slots 22, arc grooves 20, and positioning members 24 can be provided, so, under the action of multiple first positioning portions 27, the position of the movable plate 9 can be temporarily fixed, and the movable plate 9 will not move upward due to the elastic force of the first elastic member 11, which can further facilitate the staff to control the vibration amplitude of the sandwich sleeve ring 1. When a sound is emitted when the first positioning portion 27 is inserted into the spherical groove 23, it can prompt the staff to release the sandwich sleeve ring 1, avoiding the phenomenon that the position of the lens deviates violently due to the excessive vibration amplitude of the sandwich sleeve ring 1.

[0054] The bending portion 29 provides space for deformation and movement of the vertical portion 26, the first positioning portion 27, and the second positioning portion 28. When the reinforcing portion 30 is clamped inside the card slot 22, it can fix the position of the free end 31 of the positioning member 24, further improving the stability of the positioning member 24 during use.

[0055] When it is necessary to return the movable plate 9 and the sandwich sleeve ring 1 to the initial position, the staff can tilt and upwardly pull the free end 31 of the positioning member 24, which can make the first positioning portion 27 disengage from the inside of the spherical groove 23. Then, under the action of the elastic forces of the first elastic member 11 and the second elastic member 12, it can drive the movable plate 9 and the sandwich sleeve ring 1 to move upward. Finally, by sliding the baffle 14 in opposite directions, the baffle 14 returns to the initial state, and the baffle 14 no longer blocks the sandwich sleeve ring 1, and the movable plate 9 and the sandwich sleeve ring 1 can return to the initial state.

[0056] Working principle: When the staff holds the accommodation shell 6 with both hands and presses the sandwich collar 1 downward with the thumbs, the sandwich collar 1 can be driven to move downward. During the downward movement of the sandwich collar 1, the sandwich collar 1 first squeezes the second elastic member 12, and then the second elastic member 12 pushes the movable plate 9 downward. The movable plate 9 squeezes the first elastic member 11. When the bottom surface of the movable plate 9 contacts the first positioning portion 27 of the positioning member 24, the bottom surface of the movable plate 9 first pushes the first positioning portion 27 to move away from the movable plate 9 until the position of the spherical groove 23 corresponds to the position of the first positioning portion 27. Under the action of the elastic force of the material of the positioning member 24 itself, the vertical portion 26 and the first positioning portion 27 can be driven to reset, so that the first positioning portion 27 is inserted into the spherical groove 23. Also, because there can be multiple fixing grooves 21, card slots 22, arc grooves 20 and positioning members 24, under the action of multiple first positioning portions 27, the position of the movable plate 9 can be temporarily fixed, which further facilitates the staff to control the vibration amplitude of the sandwich collar 1. When a sound is emitted when the first positioning portion 27 is inserted into the spherical groove 23, it can prompt the staff to release the sandwich collar 1 to avoid the phenomenon that the position of the lens deviates violently due to too large vibration amplitude of the sandwich collar 1.

[0057] After the coating is completed and the movable plate 9 and the sandwich collar 1 need to return to the initial position, when the staff tilts upward and pulls the free end 31 of the positioning member 24, the first positioning portion 27 can be disengaged from the spherical groove 23. Then, under the elastic force of the first elastic member 11 and the second elastic member 12, the movable plate 9 and the sandwich collar 1 can be driven to move upward. Finally, by sliding the baffle 14 in the opposite direction, the baffle 14 returns to the initial state, and the baffle 14 no longer blocks the sandwich collar 1, and the movable plate 9 and the sandwich collar 1 can return to the initial state. The rest of the structure is the same as that of Embodiment 1.

[0058] Embodiment 3, referring to Figures 1-12 , which is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that: a jacking member for assisting in taking out the lens is further provided on the movable plate 9. The jacking member includes a first through groove 17 opened on the inner wall of the placement groove 2 and a jacking rod 18 fixedly installed on the top surface of the movable plate 9, and the position of the jacking rod 18 corresponds to the position of the first through groove 17.

[0059] Specifically, through the provided jacking member, the edge portion of the lens on the sandwich collar 1 can be jacked upward out of the placement groove 2, effectively protecting the edge portion of the lens and facilitating the staff to take off the lens on the sandwich collar 1, effectively reducing the damage to the edge portion of the lens caused by the forceps when taking the lens.

[0060] Referring to Figure 12 , the second positioning portion 28 is arranged in an inverted 7 - shaped.

[0061] Specifically, during the downward movement of the sandwich collar 1 and the movable plate 9, the horizontal section of the second positioning portion 28 moves above the sandwich collar 1, which can effectively prevent the sandwich collar 1 and the movable plate 9 from moving upward.

[0062] Working principle:

[0063] After the coating is completed and the lens needs to be removed from the sandwich collar 1, at this time, the first positioning portion 27 of the positioning member 24 is still inserted into the spherical groove 23. The staff presses the sandwich collar 1 downward forcefully again, and the downward pressing force for the second time is greater than that for the first time, so that the sandwich collar 1 and the movable plate 9 can move downward successively. When the bottom surface of the movable plate 9 and the bottom surface of the sandwich collar 1 are squeezed against the inclined section of the second positioning portion 28, it can drive the second positioning portion 28 to move away from the movable plate 9 until the sandwich collar 1 moves below the second positioning portion 28. Under the elastic action of the material of the positioning member 24 itself, the second positioning portion 28 is reset, and its horizontal section moves above the sandwich collar 1, which can effectively prevent the sandwich collar 1 and the movable plate 9 from moving upward. At the same time, a plurality of ejector rods 18 on the movable plate 9 can pass through the first through groove 17 to lift the lens in the placement groove 2 upward, so as to effectively protect the edge portion of the lens and facilitate the staff to remove the lens on the sandwich collar 1.

[0064] After the coating is completed and the movable plate 9 and the sandwich collar 1 need to return to the initial position, the staff can tilt the free end 31 of the positioning member 24 upward to make the horizontal section of the second positioning portion 28 disengage from above the sandwich collar 1. Then, under the elastic force of the first elastic member 11 and the second elastic member 12, it can drive the movable plate 9 and the sandwich collar 1 to move upward. Finally, by sliding the baffle 14 in the opposite direction, the baffle 14 returns to the initial state, and the baffle 14 no longer blocks the sandwich collar 1, and the movable plate 9 and the sandwich collar 1 can return to the initial state. The remaining structure is the same as that of Embodiment 2.

[0065] Embodiment 4, referring to Figures 1-12 , which is the fourth embodiment of the present invention, provides: an optical lens coating method, including the following steps:

[0066] Step 1: When placing the lens during the pre-coating preparation process, the staff first uses tweezers to place the small-sized lens on the sandwich collar 1.

[0067] Step 2: Then, when the staff holds the housing 6 with both hands and presses the sandwich collar 1 downward with the thumbs, the sandwich collar 1 can be driven to move downward. During the downward movement of the sandwich collar 1, the sandwich collar 1 first squeezes the second elastic member 12, and then the second elastic member 12 pushes the movable plate 9 downward. The movable plate 9 squeezes the first elastic member 11. When the bottom surface of the movable plate 9 contacts the first positioning portion 27 of the positioning member 24, the bottom surface of the movable plate 9 first pushes the first positioning portion 27 to move away from the movable plate 9 until the position of the spherical groove 23 corresponds to the position of the first positioning portion 27. Under the action of the elastic force of the material of the positioning member 24 itself, the vertical portion 26 and the first positioning portion 27 can be driven to reset, so that the first positioning portion 27 is inserted into the spherical groove 23. Also, because there can be multiple fixing grooves 21, card slots 22, arc grooves 20 and positioning members 24, under the action of multiple first positioning portions 27, the position of the movable plate 9 can be temporarily fixed, which can further facilitate the staff to control the vibration amplitude of the sandwich collar 1. When a sound is made when the first positioning portion 27 is inserted into the spherical groove 23, it can prompt the staff to release the sandwich collar 1.

[0068] Step 3: After the staff releases the sandwich collar 1, the sandwich collar 1 moves upward for reset under the elastic force of the second elastic member 12. Due to the existence of the baffle 14, the upward movement distance of the sandwich collar 1 is shortened. Therefore, the top surface of the sandwich collar 1 can collide with the bottom surfaces of multiple baffles 14, making the lens on the sandwich collar 1 achieve a small-amplitude vibration effect.

[0069] Step 4: After the coating is completed and the lens needs to be removed from the sandwich collar 1, at this time, the first positioning portion 27 of the positioning member 24 is still inserted into the spherical groove 23. The staff presses the sandwich collar 1 downward again with a greater force than the first downward pressing force, so that the sandwich collar 1 and the movable plate 9 can move downward in succession. When the bottom surface of the movable plate 9 and the bottom surface of the sandwich collar 1 squeeze the inclined section of the second positioning portion 28, the second positioning portion 28 can be driven to move away from the movable plate 9 until the sandwich collar 1 moves below the second positioning portion 28. Under the elastic action of the material of the positioning member 24 itself, the second positioning portion 28 is reset, and its horizontal section moves above the sandwich collar 1, which can effectively prevent the sandwich collar 1 and the movable plate 9 from moving upward. At the same time, multiple ejector rods 18 on the movable plate 9 can pass through the first through groove 17 to lift the lens in the placement groove 2 upward, facilitating the staff to remove the lens on the sandwich collar 1.

[0070] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An optical lens coating device, comprising a vacuum chamber, a sputtering coating component disposed at the bottom of the vacuum chamber, a rotating table disposed at the top of the vacuum chamber, a sandwich ring disposed on the rotating table, and a placement groove for placing a lens provided on the outer wall of the sandwich ring, characterized in that: The outer wall of the sandwich ring is provided with a housing shell, and the sandwich ring slides inside the housing shell, and the inside of the housing shell is provided with a correction component for assisting the lens in correcting the position; The correction component includes a guide rod arranged on the bottom surface of the sandwich ring, a first through hole provided on the inner wall of the accommodating shell for the guide rod to slide, a movable plate provided on the rod wall of the guide rod, and a second through groove provided on the outer wall of the movable plate, and the movable plate is elastically connected to the sandwich ring, the movable plate is elastically connected to the accommodating shell, and the inner diameter of the second through groove is larger than the inner diameter of the placement groove; The correction component also includes a first elastic member sleeved on the rod wall of the guide rod and a second elastic member sleeved on the rod wall of the guide rod; The correction component also includes a mounting groove opened on the top surface of the accommodating shell, a baffle plate arranged inside the mounting groove, an extrusion plate arranged on the side wall of the baffle plate, and a reset spring plate arranged on the inner wall of the mounting groove, and one end of the reset spring plate away from the inner wall of the mounting groove is fixedly connected to the outer wall of the extrusion plate, and the extrusion plate slides inside the mounting groove; The correction component also includes a fixing groove opened on the outer wall of the accommodating shell, a spherical groove opened on the outer wall of the movable plate, and a positioning piece arranged inside the fixing groove, and the positioning piece is made of elastic material; The positioning member comprises a first positioning portion, the shape of which is matched with the shape of the spherical groove.

2. The optical lens coating device according to claim 1, characterized in that: The sputtering coating component comprises a sputtering target arranged at the bottom of the vacuum chamber, a plasma source arranged at the bottom of the vacuum chamber, and an inert gas introduction system arranged outside the vacuum chamber.

3. The optical lens coating device according to claim 2, characterized in that: The correction component also includes a second through hole formed on the outer wall of the movable plate for the guide rod to slide.

4. The optical lens coating device according to claim 1, characterized in that: One end of the first elastic member is fixedly connected to the bottom surface of the movable plate, the other end of the first elastic member is fixedly connected to the inner wall of the accommodating shell, one end of the second elastic member is fixedly connected to the bottom surface of the sandwich ring, and the other end of the second elastic member is fixedly connected to the top surface of the movable plate.

5. The optical lens coating device according to claim 3, characterized in that: The correction component also includes a fixing groove formed on the outer wall of the accommodating shell, a clamping groove formed on the inner wall of the fixing groove, and an arc groove formed on the inner wall of the fixing groove.

6. The optical lens coating device according to claim 5, characterized in that: The positioning member also includes a fixed end, a vertical portion, a second positioning portion, a curved portion, a reinforcement portion and a free end, and the top surface of the fixed end is fixedly connected to the inner wall of the fixed groove, the reinforcement portion is clamped inside the clamping groove, and the free end is located outside the fixed groove.

7. The optical lens coating device according to claim 6, characterized in that: The second positioning portion is arranged in an inverted 7 shape.

8. The optical lens coating device according to claim 2, characterized in that: The movable plate is also provided with an ejection component for assisting in taking out the lens.

9. The optical lens coating device according to claim 8, characterized in that: The ejection component comprises a first through slot opened on the inner wall of the placement slot and an ejector rod arranged on the top surface of the movable plate, and the position of the ejector rod corresponds to the position of the first through slot.

10. An optical lens coating method, using the optical lens coating device as claimed in claim 8, characterized in that: The following steps are involved: During the preparation process before coating, the staff first uses tweezers to place the small-sized lens on the sandwich ring, then the staff holds the housing with both hands and presses the sandwich ring down with the thumb. When the staff hears a sound, the sandwich ring is released; After the staff loosens the sandwich ring, the top surface of the sandwich ring can collide with the bottom surfaces of the multiple baffles, so that the lens on the sandwich ring can achieve a small vibration effect; Subsequently, the sandwich ring is fixed on a rotating table, and the vacuum chamber is evacuated to a low-pressure vacuum state, and then a uniform thin film layer is gradually formed on the lens surface by sputtering the coating component; After coating, when the lens needs to be removed from the sandwich ring, the staff presses the sandwich ring down again. The ejection component can lift the lens inside the placement groove upward, making it convenient for the staff to remove the lens from the sandwich ring.

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