Optical lens coating device and coating method

Abstract

The invention relates to the technical field of coating devices, and discloses an optical lens coating device and a coating method.The optical lens coating device comprises a vacuum cavity, a sputter coating component arranged at the bottom of the vacuum cavity, a rotating table arranged at the top of the vacuum cavity and a sandwich lantern ring arranged on the rotating table; the containing groove is formed in the outer wall of the sandwich lantern ring and used for containing the lens, a containing shell is arranged on the outer wall of the sandwich lantern ring, the sandwich lantern ring slides in the containing shell, and a correcting component used for assisting in correcting the position of the lens is arranged in the containing shell. The optical lens coating device can effectively eliminate the slight inclination or non-uniform placement state of the lens, so that the lens naturally slides or is adjusted to a correct placement position.

Description

Technical Field

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

[0002] In the field of optics, as modern optical equipment has higher and higher requirements for imaging quality, lens surface coating technology has become one of the key means to improve lens performance. Optical coating can effectively reduce light reflection, improve transmittance, enhance the imaging quality of the optical system, and give the lens wear resistance, waterproofness, corrosion resistance and other characteristics by depositing one or more layers of functional thin films on the lens surface. Therefore, optical coating technology is widely used in camera lenses, microscopes, telescopes, glasses and other equipment.

[0003] Reference Figure 1-Figure 3 , Traditional optical lens coating devices usually include a vacuum chamber to control environmental conditions and reduce the impact 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 ring, and observes the reflected light under lighting conditions to check whether there are dust, fingerprints, oil stains, tiny particles and other pollutants on the lens surface. Then, the sandwich ring with the lens is fixed on a rotating table to ensure that the film can be evenly distributed during the coating process. The lens usually needs to be rotated continuously during the coating process. Finally, the coating material is heated to a vaporized state, or it is deposited on the lens surface using a sputtering process to form the required film layer.

[0004] When handling lenses with larger specifications, workers can easily place the lenses on the sandwich rings with tweezers. However, when handling some small-sized lenses (such as fisheye lenses), the small size and light weight of these lenses increase the difficulty of operation. When using tweezers to place small lenses, it is often difficult to ensure that the lenses can be placed flat in the placement grooves of the sandwich rings. In addition, the sandwich ring structure design in the prior art is relatively fixed and lacks the automatic correction function for small lenses, so that the lenses are prone to slight tilt in the placement grooves. This tilt will directly affect the uniformity of the film during the coating process, resulting in inconsistent film thickness on the lens surface, thereby 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 a small lens can be placed flatly in a placement groove of a sandwich ring when tweezers are used to place the lens, an optical lens coating device and a coating method are proposed.

[0006] In one aspect of the present application, an optical lens coating device is provided, the purpose of which is to solve the problems of tilt and uneven film layer that are easily caused by small-sized lenses during placement and coating.

[0007] The technical solution of the present invention is: an optical lens coating device, comprising 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 ring arranged on the rotating table, and a placement groove for placing a lens opened on the outer wall of the sandwich ring, the outer wall of the sandwich ring is provided with a accommodating shell, and the sandwich ring slides inside the accommodating shell, and a correction component for assisting the lens correction position is arranged inside the accommodating shell; the correction component comprises a guide rod arranged on the bottom surface of the sandwich ring, and a guide rod opened on the inner wall of the accommodating shell for the guide rod to slide A first through hole, a movable plate arranged on the wall of the guide rod, and a second through groove opened on the outer wall of the movable plate, and the movable plate is elastically connected to the sandwich ring, and 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 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 sheet arranged on the inner wall of the mounting groove, and the end of the reset spring sheet 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.

[0008] Furthermore, 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] Furthermore, the correction component also includes a second through hole formed on the outer wall of the movable plate for the guide rod to slide.

[0010] Furthermore, the correction component also includes a first elastic member sleeved on the wall of the guide rod, and a second elastic member sleeved on the wall of the guide rod, and 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.

[0011] Furthermore, the correction component also includes a fixing groove opened on the outer wall of the accommodating shell, 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 piece arranged inside the fixing groove, and the positioning piece is an elastic material.

[0012] Furthermore, the positioning member includes a fixed end, a vertical portion, a first positioning portion, a second positioning portion, a bent 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 shape of the first positioning portion is adapted to the shape of the spherical groove, the reinforcement portion is clamped inside the clamping groove, and the free end is located outside the fixed groove.

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

[0014] Furthermore, the movable plate is also provided with an ejection component for assisting in taking out the lens.

[0015] Furthermore, the ejection component includes 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.

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

[0017] Beneficial effects of the present invention: When the staff holds the containing shell and presses the sandwich ring downward, the sandwich ring can have a tendency to reset upward. At the same time, when the sandwich ring moves downward and separates from the baffle, the multiple baffles move in relative directions under the action of the elastic force of the reset spring pieces, and the multiple baffles move to the top of the sandwich ring. Then, when the staff releases the sandwich ring, the sandwich ring moves upward to reset. Since the presence of the baffle shortens the distance that the sandwich ring can move upward, the top surface of the sandwich ring can collide with the bottom surfaces of the multiple baffles, so that the sandwich ring can achieve a small vibration effect. This vibration can effectively eliminate the slight tilt or uneven placement of the lens, allowing the lens to slide naturally or adjust to the correct placement position.

[0018] 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 member, which can further facilitate the staff to control the vibration amplitude of the sandwich ring. When the first positioning part is inserted into the spherical groove and makes a sound, it can prompt the staff to loosen the sandwich ring to avoid the phenomenon that the position of the lens is drastically shifted due to excessive vibration amplitude of the sandwich ring.

[0019] By means of the ejection component, the horizontal section of the second positioning portion can be moved to the top of the sandwich ring, effectively preventing the sandwich ring and the movable plate from moving upward. At the same time, a plurality of ejector rods on the movable plate can pass through the first through groove to lift the lens placed inside the groove upward, thereby effectively protecting the edge of the lens, making it convenient for staff to remove the lens from the sandwich ring, and effectively reducing the damage to the edge of the lens caused by tweezers when taking the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the state when the lens is placed in the prior art; Figure 2 It is a schematic diagram of the installation of a sandwich ring in the prior art; Figure 3 It is a schematic diagram of the installation of sputtering coating components in the prior art; Figure 4 A perspective view of the present invention; Figure 5 is a cross-sectional view of the accommodating shell in the present invention; Figure 6 For the present invention Figure 5 The enlarged schematic diagram at A in the middle; Figure 7 It is a schematic diagram of the installation of the movable plate in the present invention; Figure 8 is a three-dimensional diagram of the sandwich ring in the present invention; Fig. 9 A three-dimensional diagram of the movable plate in the present invention; Fig.10 is a cross-sectional view of the accommodating shell in the present invention; Fig.11 For the present invention Figure 5 The enlarged schematic diagram of point B in the middle; Fig.12 It is a three-dimensional diagram of the positioning member in the present invention.

[0021] In the figure: 1. Sandwich 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. Mounting groove; 14. Baffle; 15. Extrusion plate; 16. Reset spring; 17. First through groove; 18. Push rod; 19. Second through groove; 20. Arc groove; 21. Fixed groove; 22. Card groove; 23. Spherical groove; 24. Positioning member; 25. Fixed end; 26. Vertical part; 27. First positioning part; 28. Second positioning part; 29. ​​Bending part; 30. Reinforcement part; 31. Free end. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] Example 1, reference Figure 1-Figure 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 ring 1 arranged on the rotating table 3, and a placement groove 2 for placing a lens opened on the outer wall of the sandwich ring 1, a containing shell 6 is arranged on the outer wall of the sandwich ring 1, and the sandwich ring 1 slides inside the containing shell 6, and a correction component for assisting the correction position of the lens is arranged inside the containing 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.

[0024] Specifically, the sputtering target is a key component for storing coating materials, which is usually made of high-purity metals, alloys or compounds. 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. The inert gas (such as argon) is introduced through the inert gas introduction system to generate plasma, and the plasma is accelerated to become a high-energy ion flow. When the high-energy ion flow bombards the target material, the atoms of the target material will be excited and flow along the plasma, and finally deposited on the lens surface. Among them, the vacuum chamber 4, the rotating table 3 and the sputtering coating component 5 are all mature existing technologies, and no further elaboration will be made here.

[0025] By means of the correction component, the sandwich ring 1 can vibrate slightly inside the accommodating shell 6, and this vibration can exert a slight mechanical disturbance on the lens placed in the placement groove 2. Since the lens is a small-sized object that needs to be placed with high precision, this vibration can effectively eliminate the slight tilt or uneven placement of the lens, allowing the lens to slide naturally or adjust to the correct placement position.

[0026] Reference Figure 1-Figure 10The correction component includes a guide rod 7 fixedly mounted on the bottom surface of the sandwich ring 1, a first through hole 8 provided on the inner wall of the accommodating shell 6 for the guide rod 7 to slide, a movable plate 9 slidably mounted on the rod wall of the guide rod 7, and a second through groove 19 provided on the outer wall of the movable plate 9, and the movable plate 9 is elastically connected to the sandwich ring 1, and the movable plate 9 is elastically connected to the accommodating shell 6, and the inner diameter of the second through groove 19 is larger than the inner diameter of the placement groove 2; the correction component also includes a mounting groove 13 provided on the top surface of the accommodating shell 6, a baffle 14 slidably mounted inside the mounting groove 13, an extrusion plate 15 fixedly mounted on the side wall of the baffle 14, and a reset spring 16 fixedly mounted on the inner wall of the mounting groove 13, and one end of the reset spring 16 away from the inner wall of the mounting groove 13 is fixedly connected to the outer wall of the extrusion plate 15, and the extrusion plate 15 slides inside the mounting groove 13; the correction component also includes a second through hole 10 provided on the outer wall of the movable plate 9 for the guide rod 7 to slide.

[0027] 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 ring 1 and the movable plate 9 can only slide in the vertical direction in the accommodating shell 6 without deflection, thereby ensuring the stability of the sandwich ring 1 when it vibrates with a small amplitude and improving the accuracy of lens correction.

[0028] Due to the elastic connection between the movable plate 9 and the sandwich ring 1, and the elastic connection between the movable plate 9 and the accommodating shell 6, the reset spring piece 16 is in a squeezed state in the initial situation. Therefore, when the staff holds the accommodating shell 6 and presses the sandwich ring 1 downward, the sandwich ring 1 can have a tendency to reset upward. At the same time, when the sandwich ring 1 moves downward and separates from the baffle 14, the multiple baffles 14 move in relative directions under the action of the elastic force of the reset spring piece 16, and the multiple baffles 14 move to the top of the sandwich ring 1. Then, when the staff releases the sandwich ring 1, the sandwich ring 1 moves upward to reset. Since the existence of the baffle 14 shortens the distance that the sandwich ring 1 can move upward, the top surface of the sandwich ring 1 can collide with the bottom surfaces of the multiple baffles 14, so that the sandwich ring 1 achieves a small vibration effect.

[0029] Reference Figure 5-Figure 6 The correction component also 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, and one end of the first elastic member 11 is fixedly connected to the bottom surface of the movable plate 9, 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 ring 1, and the other end of the second elastic member 12 is fixedly connected to the top surface of the movable plate 9.

[0030] Specifically, the first elastic member 11 and the second elastic member 12 can be compression springs or return springs commonly used in the prior art, preferably compression springs. When the staff holds the accommodating shell 6 and presses the sandwich ring 1 downward, the sandwich ring 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.

[0031] Working principle: When placing the lens in the preparation process before coating, the staff first uses tweezers to place the small-sized lens on the sandwich ring 1, and then the staff holds the accommodating shell 6 with both hands and presses the sandwich ring 1 downward with the thumb, which can drive the sandwich ring 1 to move downward. During the descent of the sandwich ring 1, after the position of the sandwich ring 1 is separated from the multiple baffles 14, the multiple baffles 14 move in relative directions under the action of the elastic force of the reset spring sheet 16, so that the multiple baffles 14 can move to the top of the sandwich ring 1 to perform the sandwich ring 1. The first elastic member 11 and the second elastic member 12 are used to block the movement of the sandwich ring 1. When the staff releases the sandwich ring 1, the sandwich ring 1 moves upward to reset under the elastic force of the first elastic member 11 and the second elastic member 12. Since the baffle 14 shortens the distance that the sandwich ring 1 can move upward, the top surface of the sandwich ring 1 can collide with the bottom surfaces of multiple baffles 14, so that the lens on the sandwich ring 1 can achieve a small vibration effect. This vibration can effectively eliminate the slight tilt or uneven placement of the lens, so that the lens can slide naturally or be adjusted to the correct placement position.

[0032] Example 2, reference Figure 1-Figure 12 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the correction component also 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 elastic material.

[0033] Specifically, the fixing groove 21 , the clamping groove 22 and the arc groove 20 provide space for the positioning member 24 to be installed and move.

[0034] Reference Fig.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 bent portion 29, a reinforcement portion 30, and a free end 31, and 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 reinforcement portion 30 is clamped inside the clamping groove 22, and the free end 31 is located outside the fixed groove 21.

[0035] Specifically, the positioning member 24 can be made of elastic materials such as spring steel and stainless steel, which has good fatigue resistance and is 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. Then, under the action of the elastic force of the positioning member 24 itself, the vertical portion 26 and the first positioning portion 27 can be driven to reset, thereby inserting the first positioning portion 27 into the interior of the spherical groove 23. A plurality of fixing grooves 21, card grooves 22, arc grooves 20 and positioning members 24 can be provided, so under the action of a plurality of 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, thereby further facilitating the staff to control the vibration amplitude of the sandwich ring 1. When the first positioning portion 27 is inserted into the spherical groove 23 and makes a sound, it can prompt the staff to loosen the sandwich ring 1, thereby avoiding the phenomenon that the position of the lens is drastically shifted due to excessive vibration amplitude of the sandwich ring 1.

[0036] The bent portion 29 provides deformation and movement space for the vertical portion 26, the first positioning portion 27 and the second positioning portion 28. When the reinforcement portion 30 is stuck in the slot 22, the position of the free end 31 of the positioning member 24 can be fixed, further improving the stability of the positioning member 24 during use.

[0037] When it is necessary to return the movable plate 9 and the sandwich ring 1 to their initial positions, the staff can tilt the free end 31 of the positioning member 24 upward to disengage the first positioning portion 27 from the interior of the spherical groove 23, and then, under the elastic force of the first elastic member 11 and the second elastic member 12, the movable plate 9 and the sandwich ring 1 can be driven to move upward. Finally, by sliding the baffle plate 14 in opposite directions, the baffle plate 14 returns to its initial state, and the baffle plate 14 no longer blocks the sandwich ring 1, so that the movable plate 9 and the sandwich ring 1 can return to their initial state.

[0038] Working principle: when the staff holds the accommodating shell 6 with both hands and presses the sandwich ring 1 downward with the thumb, the sandwich ring 1 can be driven to move downward. During the descent of the sandwich ring 1, the sandwich ring 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. 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. Then, under the elastic force of the positioning member 24 itself, the first positioning portion 27 is pushed away from the movable plate 9. Under the action of, 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 inside of the spherical groove 23. Because there can be multiple fixing grooves 21, card grooves 22, arc grooves 20 and positioning members 24, the position of the movable plate 9 can be temporarily fixed under the action of multiple first positioning portions 27, which can further facilitate the staff to control the vibration amplitude of the sandwich ring 1. When the first positioning portion 27 is inserted into the inside of the spherical groove 23 and makes a sound, it can prompt the staff to loosen the sandwich ring 1, so as to avoid the phenomenon that the position of the lens is drastically shifted due to excessive vibration amplitude of the sandwich ring 1.

[0039] After the coating is completed, when the movable plate 9 and the sandwich ring 1 need to be returned to the initial position, the staff can tilt the free end 31 of the positioning member 24 upward to make the first positioning portion 27 disengage from the inside of the spherical groove 23, and then under the elastic force of the first elastic member 11 and the second elastic member 12, the movable plate 9 and the sandwich ring 1 can be driven to move upward, and finally, the baffle 14 is slid in the opposite direction to return to the initial state, and the baffle 14 no longer blocks the sandwich ring 1, and the movable plate 9 and the sandwich ring 1 can return to the initial state. The rest of the structure is the same as that of Example 1.

[0040] Example 3, reference Figure 1-Figure 12 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: an ejection component for assisting in taking out the lens is also provided on the movable plate 9, and the ejection component includes a first through groove 17 opened on the inner wall of the placement groove 2, and a push rod 18 fixedly installed on the top surface of the movable plate 9, and the position of the push rod 18 corresponds to the position of the first through groove 17.

[0041] Specifically, by means of the ejection component, the edge portion of the lens on the sandwich ring 1 can be ejected upward from the placement groove 2, thereby effectively protecting the edge portion of the lens, making it convenient for the staff to remove the lens from the sandwich ring 1, and effectively reducing the damage to the edge portion of the lens caused by tweezers when removing the lens.

[0042] Reference Fig.12 The second positioning portion 28 is arranged in an inverted 7 shape.

[0043] Specifically, during the descending process of the sandwich collar 1 and the movable plate 9, the horizontal section of the second positioning portion 28 moves to the top of the sandwich collar 1, which can effectively prevent the sandwich collar 1 and the movable plate 9 from moving upward.

[0044] Working principle: After the coating is completed, when the lens needs to be removed from the sandwich ring 1, at this time, the first positioning portion 27 of the positioning piece 24 is still inserted into the inside of the spherical groove 23, and the staff presses the sandwich ring 1 downward with force again, and the second downward pressing force is greater than the first downward pressing force, so that the sandwich ring 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 ring 1 are squeezed with 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 ring 1 moves to the bottom of the second positioning portion 28. Under the elastic action of the material of the positioning piece 24 itself, the second positioning portion 28 is reset, and its horizontal section moves to the top of the sandwich ring 1, which can effectively prevent the sandwich ring 1 and the movable plate 9 from moving upward. At the same time, the multiple push rods 18 on the movable plate 9 can pass through the first through groove 17 to lift the lens inside the placement groove 2 upward, thereby effectively protecting the edge of the lens and facilitating the staff to remove the lens from the sandwich ring 1.

[0045] After the coating is completed, when the movable plate 9 and the sandwich ring 1 need to be returned 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 separate from the upper part of the sandwich ring 1, and then under the elastic force of the first elastic member 11 and the second elastic member 12, the movable plate 9 and the sandwich ring 1 can be driven to move upward, and finally, by sliding the baffle 14 in the opposite direction, the baffle 14 is returned to the initial state, and the baffle 14 no longer blocks the sandwich ring 1, and the movable plate 9 and the sandwich ring 1 can return to the initial state. The rest of the structure is the same as that of Example 2.

[0046] Example 4, reference Figure 1-Figure 12 , as a fourth embodiment of the present invention, provides: an optical lens coating method, comprising the following steps: Step 1: When placing the lens during the preparation process before coating, the staff first uses tweezers to place the small-sized lens on the sandwich ring 1.

[0047] Step 2: Then the staff holds the accommodating shell 6 with both hands, and presses the sandwich ring 1 downward with the thumb, which can drive the sandwich ring 1 to move downward. During the descent of the sandwich ring 1, the sandwich ring 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. 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 is aligned with the position of the first positioning portion 27. After the correspondence, the elastic force of the positioning member 24 itself can drive the vertical portion 26 and the first positioning portion 27 to reset, so that the first positioning portion 27 is inserted into the inside of the spherical groove 23. Because there can be multiple fixed grooves 21, card grooves 22, arc grooves 20 and positioning members 24, the position of the movable plate 9 can be temporarily fixed under the action of multiple first positioning portions 27, which can further facilitate the staff to control the vibration amplitude of the sandwich ring 1. When the first positioning portion 27 is inserted into the inside of the spherical groove 23 and makes a sound, it can prompt the staff to loosen the sandwich ring 1.

[0048] Step three: After the staff releases the sandwich ring 1, the sandwich ring 1 moves upward to reset under the elastic force of the second elastic member 12. Since the existence of the baffle 14 shortens the distance that the sandwich ring 1 can move upward, the top surface of the sandwich ring 1 can collide with the bottom surfaces of multiple baffles 14, so that the lens on the sandwich ring 1 can achieve a small vibration effect.

[0049] Step 4: After the coating is completed, when the lens needs to be removed from the sandwich ring 1, at this time, the first positioning portion 27 of the positioning piece 24 is still inserted into the inside of the spherical groove 23, and the staff presses the sandwich ring 1 downward again, and the second downward pressing force is greater than the first downward pressing force, so that the sandwich ring 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 ring 1 are squeezed with 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 ring 1 moves to the bottom of the second positioning portion 28. Under the elastic action of the material of the positioning piece 24 itself, the second positioning portion 28 is reset, and its horizontal section moves to the top of the sandwich ring 1, which can effectively prevent the sandwich ring 1 and the movable plate 9 from moving upward. At the same time, the multiple push rods 18 on the movable plate 9 can pass through the first through groove 17 to lift the lens inside the placement groove 2 upward, so that the staff can remove the lens on the sandwich ring 1.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An optical lens coating device, comprising a vacuum chamber (4), a sputtering coating component (5) disposed at the bottom of the vacuum chamber (4), a rotating table (3) disposed at the top of the vacuum chamber (4), a sandwich ring (1) disposed on the rotating table (3), and a placement groove (2) provided on the outer wall of the sandwich ring (1) for placing a lens, characterized in that: The outer wall of the sandwich ring (1) is provided with a containing shell (6), and the sandwich ring (1) slides inside the containing shell (6), and a correction component for assisting the correction of the position of the lens is provided inside the containing shell (6); The correction component comprises a guide rod (7) arranged on the bottom surface of the sandwich ring (1), a first through hole (8) provided on the inner wall of the accommodating shell (6) for the guide rod (7) to slide, a movable plate (9) provided on the rod wall of the guide rod (7), and a second through groove (19) provided on the outer wall of the movable plate (9), wherein the movable plate (9) is elastically connected to the sandwich ring (1), the movable plate (9) is elastically connected to the accommodating shell (6), and the inner diameter of the second through groove (19) is larger than the inner diameter of the placement groove (2); The correction component further comprises a mounting groove (13) formed on the top surface of the accommodating shell (6), a baffle (14) arranged inside the mounting groove (13), an extrusion plate (15) arranged on the side wall of the baffle (14), and a reset spring (16) arranged on the inner wall of the mounting groove (13), wherein one end of the reset spring (16) away from the inner wall of the mounting groove (13) is fixedly connected to the outer wall of the extrusion plate (15), and the extrusion plate (15) slides inside the mounting groove (13).

2. The optical lens coating device according to claim 1, characterized in that: The sputtering coating component (5) comprises 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).

3. The optical lens coating device according to claim 2, characterized in that: The correction component further comprises a second through hole (10) formed on the outer wall of the movable plate (9) for the guide rod (7) to slide.

4. The optical lens coating device according to claim 3, characterized in that: The correction component further comprises 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), wherein one end of the first elastic member (11) is fixedly connected to the bottom surface of the movable plate (9), 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 ring (1), and the other end of the second elastic member (12) is fixedly connected to the top surface of the movable plate (9).

5. The optical lens coating device according to claim 4, characterized in that: The correction component further comprises a fixing groove (21) formed on the outer wall of the accommodating shell (6), a clamping groove (22) formed on the inner wall of the fixing groove (21), an arc groove (20) formed on the inner wall of the fixing groove (21), a spherical groove (23) formed on the outer wall of the movable plate (9), and a positioning member (24) disposed inside the fixing groove (21), wherein the positioning member (24) is made of elastic material.

6. The optical lens coating device according to claim 5, characterized in that: The positioning member (24) comprises a fixed end (25), a vertical portion (26), a first positioning portion (27), a second positioning portion (28), a bent portion (29), a reinforcing portion (30), and a free end (31), wherein 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 clamping groove (22), and the free end (31) is located outside the fixed groove (21).

7. The optical lens coating device according to claim 6, characterized in that: The second positioning portion (28) is arranged in an inverted 7 shape.

8. The optical lens coating device according to claim 2, characterized in that: The movable plate (9) 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 (17) formed on the inner wall of the placement slot (2), and an ejector rod (18) disposed on the top surface of the movable plate (9), wherein the position of the ejector rod (18) corresponds to the position of the first through slot (17).

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: In the preparation process before coating, the staff first uses tweezers to place the small-sized lens on the sandwich ring (1), then the staff holds the housing (6) with both hands and presses the sandwich ring (1) downward with the thumb, and when the staff hears a sound, the sandwich ring (1) is released; After the staff releases the sandwich ring (1), the top surface of the sandwich ring (1) can collide with the bottom surfaces of the plurality of baffles (14), so that the lens on the sandwich ring (1) achieves a small vibration effect; Subsequently, the sandwich ring (1) is fixed on a rotating table (3), and the vacuum chamber (4) is evacuated to a low-pressure vacuum state, and then a uniform thin film layer is gradually formed on the surface of the lens by sputtering a coating component (5); After the coating is completed, when the lens needs to be removed from the sandwich ring (1), the staff will press the sandwich ring (1) downward again with force, and the lens inside the placement groove (2) can be lifted upward by the provided ejection component, making it convenient for the staff to remove the lens from the sandwich ring (1).

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