A simulated lens coating fixture with adjustable mirror curvature and its adjustment method

Abstract

This invention discloses a simulated lens coating fixture and its adjustment method that can adjust different mirror curvatures. The fixture includes a base plate with a transverse sliding groove and a movable opening on its upper side; it also includes at least two support units, each including a slider slidably connected to the transverse sliding groove, the slider being in close contact with the upper side of the base plate; each support unit also includes a vertically arranged adjustment plate with two parallel vertical sliding grooves; at least one of the two vertical sliding grooves passes through an upper locking member and is connected to the slider; the support unit also includes a lens holder, the movable opening being used for the vertical movement of the adjustment plate and the lens holder; the lens holder includes a base and a limiting ring, the base having a mounting groove threadedly connected to the limiting ring. This fixture enables the simulation of mirror surfaces with different curvatures and sizes.

Description

Technical Field

[0001] This invention relates to the field of lens coating technology, and more specifically to coating tooling. Background Technology

[0002] In actual coating processes, vacuum coating machines often employ a plasma source in conjunction with a high-performance evaporator. Therefore, optical coating surfaces are typically coated using a "face-down" method. Currently, tray-type coating fixtures are often placed on planetary disks and then adjusted at different angles using an umbrella frame to simulate the curvature of the coating surface. However, the umbrella frame method cannot handle lenses with large curvatures.

[0003] Currently, there are also adjustable curvature simulated lens coating fixtures. However, during the simulated lens coating process, the coating layer enters the tank and gradually gets stuck, which affects the life of the fixture. In addition, during the actual coating process, due to the large swing angle, the simulated lens may fall off, resulting in loss.

[0004] Therefore, it is essential to study a simulated coating fixture with adjustable mirror curvature to meet the increasing coating requirements. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention provides a simulated lens coating fixture and its adjustment method that can adjust different mirror curvatures, thereby solving at least one of the above-mentioned technical problems.

[0006] The technical solution of the present invention is: a simulated lens coating fixture with adjustable mirror curvature, characterized in that it includes a base plate, wherein the upper side of the base plate is provided with a transverse sliding groove and an movable opening arranged in front and behind;

[0007] It also includes at least two support units, each support unit comprising a slider slidably connected to the transverse groove, the slider being in close contact with the upper side of the base plate;

[0008] The support unit also includes a vertically arranged adjustment plate, on which two vertically arranged sliding grooves are formed; at least one of the two vertical sliding grooves passes through the upper locking member and is connected to the slider;

[0009] The support unit also includes a lens holder. The movable port is used to adjust the plate and the lens holder to move up and down. The lens holder includes a base and a limiting ring. The base has an installation groove. The installation groove is threadedly connected to the limiting ring. The bottom of the installation groove is provided with a boss that supports the lower edge of the simulated lens. The boss and the limiting ring clamp the edge of the simulated lens.

[0010] The central axis of the mounting groove and the central axis of the base plate are in the same vertical plane;

[0011] A lower locking member is installed on the base. The lower locking member passes through either of the two vertical sliding grooves. The base and the locking nut of the lower locking member, which is threadedly connected, are clamped on the front and rear sides of the adjusting plate.

[0012] Compared to traditional simulated lens coating fixtures, this simulated lens coating fixture restricts the freedom of movement of the lens mount, preventing deviations in the accuracy of the simulated coated lens caused by the lens mount not being on the same reference plane.

[0013] The lens mount facilitates the fixation of the simulated lens.

[0014] More preferably, the base plate is fixed on the planetary chuck of the vacuum coating machine.

[0015] More preferably, the limiting ring has two mirror-symmetrical notches on the side away from the boss.

[0016] This facilitates the rotation of the limit ring.

[0017] In a further preferred embodiment, the limiting ring is inserted into a transmission plate through the notch.

[0018] This facilitates the transmission plate driving the rotation of the limit ring.

[0019] More preferably, the end face of the base adjacent to the adjusting plate is a plane, and the plane abuts against the adjusting plate.

[0020] More preferably, the bottom plate has a strip-shaped opening on its lower side that connects with the bottom of the slider;

[0021] A locking screw is threaded to the bottom of the slider, and the locking screw passes through the strip-shaped opening and is connected to the slider.

[0022] It facilitates locking the slider.

[0023] More preferably, the end of the slider is connected to two upper locking members arranged side by side;

[0024] The adjusting plate is fixed relative to the slider by two upper locking pieces passing through the same vertical slider;

[0025] The side of the adjusting plate abuts against the end of the slider.

[0026] More preferably, the slider and the lens holder are connected to different sides of the adjustment plate in the thickness direction.

[0027] More preferably, the upper locking member and the lower locking member respectively pass through two vertical sliding grooves on the adjusting plate.

[0028] More preferably, the central axis of the lower locking member is perpendicular to the central axis of the base.

[0029] A method for adjusting a simulated lens coating fixture with adjustable mirror curvature, characterized by comprising the following steps:

[0030] Step 1: In the 3D model of the mirror, retrieve the reference point position information of the required curvature. The reference point position information includes coordinate information, which includes the value of a in the left and right directions and the value of b in the vertical direction.

[0031] Step 2: Obtain the placement information of the corresponding simulated lens based on the reference point position information. Simulate the placement information of the lower surface of the simulated lens, including the left and right position information relative to the side wall of the coating cavity, the height position information relative to the bottom plate of the coating cavity, and the tilt angle information.

[0032] Step 3: Adjust the position of the slider according to the left and right position information, adjust the height of the lens mount according to the height position information, and adjust the angle of the lens mount according to the tilt angle information.

[0033] During angle adjustment, a goniometer is placed on the simulated lens on the lens mount to measure and adjust the angle.

[0034] In a further preferred embodiment, in step one, the lower surface of the lens is placed tangent to the curve corresponding to the curvature at the reference point.

[0035] Beneficial effects:

[0036] It enables the simulation of mirror surfaces of components with different curvatures and sizes;

[0037] It is easy to process, stable in use, and not easily deformed, making it particularly suitable for verifying the uniformity of large curvature mirror surfaces;

[0038] It can also be used in conjunction with a suspended structure to effectively solve the problem of film thickness that cannot be verified at various angles of large curvature mirrors.

[0039] After using this mirror simulation tool, a perfect uniform coating baffle can be made according to the product size and image requirements, avoiding the phenomenon of uneven coating layers at various angles when coating large lenses.

[0040] Compared to traditional simulated lens coating fixtures, this invention first solves the problem of how to ensure that the center projection position of the lens is located at the center of the base plate (that is, by using the front and rear positions of the front and rear lenses, the front and rear positions of all lenses are kept constant, and the distance from the center of all lenses to the front side of the coating cavity is equal to the distance to the rear side of the coating cavity). By fixing the lens base with a slider, the position of the lens is determined, which greatly improves the accuracy of simulated lens coating.

[0041] This also solves the problem that traditional adjustable curvature simulated lens coating fixtures will gradually experience groove jamming during the simulated lens coating process, thus affecting the lifespan of the fixture.

[0042] This significantly reduces the limitations of analyzing coating uniformity during the debugging process for products with special curvatures. By adjusting the height and angle of the lens on the lens mount, the curvature of the product during the coating process can be simulated, thereby obtaining data on the lens in different curvature directions, determining whether each coating area meets the required effect, and using this data to correct the uniformity baffle.

[0043] Finally, the lens is secured by clamping, which solves the problem of lens detachment that can occur during traditional simulated coating processes due to large swing angles. Furthermore, it is simple to manufacture and operate, with manufacturability and convenience considered in its design. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of one structure of the present invention;

[0045] Figure 2 This is a schematic diagram of one structure of the present invention;

[0046] Figure 3 This is a schematic diagram of one structure of the present invention;

[0047] Figure 4 This is a schematic diagram of the present invention when the coated surface is a concave surface with a large curvature.

[0048] Figure 5 This is a schematic diagram of the present invention when the coated surface is a convex surface with a large curvature;

[0049] Figure 6 This is a schematic diagram of the structure of the adjusting plate of the present invention;

[0050] Figure 7 This is a schematic diagram of the lens holder structure of the present invention;

[0051] Figure 8 This is a schematic diagram of the structure of the movable clamping member of the present invention;

[0052] Figure 9 This is a schematic diagram of the structure of the base plate of the present invention;

[0053] Figure 10 This is a schematic diagram of the slider of the present invention.

[0054] In the diagram: 1 is the lens mount, 2 is the adjustment plate, 3 is the base plate, 4 is the slider, and 11 is the movable clamping component. Detailed Implementation

[0055] See Figures 1 to 10 Specific embodiment 1: A simulated lens coating fixture with adjustable mirror curvature includes a base plate 3, with a transverse sliding groove and a movable opening on the upper side of the base plate 3; it also includes at least two support units, each support unit including a slider 4 slidably connected to the transverse sliding groove, the slider 4 being in close contact with the upper side of the base plate 3; the support unit also includes a vertically arranged adjusting plate 2, with two parallel vertical sliding grooves on the adjusting plate 2; at least one of the two vertical sliding grooves passes through an upper locking member and is connected to the slider 4; the support unit also includes a lens holder 1 and a movable opening. The adjustment plate 2 and lens holder 1 are used to move up and down. The lens holder 1 includes a base and a limiting ring. The base has an installation groove, which is threaded to the limiting ring 11. The bottom of the installation groove has a boss that supports the lower edge of the simulated lens. The boss and the limiting ring 11 clamp the edge of the simulated lens. The central axis of the installation groove and the central axis of the base plate 3 are in the same vertical plane. A lower locking member is installed on the base. The lower locking member passes through either of the two vertical sliding grooves. The locking nut of the lower locking member, which is threaded to the base, is clamped on the front and rear sides of the adjustment plate 2.

[0056] The base plate 3 is used to clamp and fix the planetary disk inside the vacuum coating machine.

[0057] Compared to traditional simulated lens coating fixtures, this simulated lens coating fixture restricts the freedom of movement of the lens holder 1, preventing deviations in the accuracy of the simulated coated lens caused by the lens holder 1 not being on a reference plane. The design of the lens holder 1 facilitates the fixation of the simulated lens.

[0058] The limiting ring 11 has two mirror-symmetrical notches on the side away from the boss. This facilitates the rotation of the limiting ring. A transmission plate is inserted into the limiting ring 11 through the notches, allowing the transmission plate to drive the rotation of the limiting ring.

[0059] The end face of the base adjacent to the adjustment plate 2 is a plane, and the plane abuts against the adjustment plate.

[0060] The bottom of the base plate 3 has a slotted opening on its lower side that aligns with the bottom of the slider 4. A locking screw is threaded onto the bottom of the slider 4, passing through the slotted opening and connecting to the slider 4. This facilitates locking the slider 4. Two upper locking members are connected to the end of the slider 4, arranged side by side. The adjusting plate 2 is fixed relative to the slider 4 by the two upper locking members passing through the same vertical slider 4. The side of the adjusting plate 2 abuts against the end of the slider 4.

[0061] Slider 4 and lens holder are connected to different sides of the adjusting plate 2 along its thickness direction. The upper and lower locking components pass through two vertical grooves on the adjusting plate 2, respectively. The central axis of the lower locking component is perpendicular to the central axis of the base.

[0062] This invention is mainly designed for evaporation coating of circular glass products with different curvatures and lengths not exceeding 400mm, including concave, convex, and planar optical surfaces.

[0063] Figure 4 Used to simulate concave mirror coating.

[0064] Figure 5 Used to simulate convex mirror coating.

[0065] A method for adjusting a simulated lens coating fixture with adjustable mirror curvature includes the following steps:

[0066] Step 1: In the 3D model of the mirror, retrieve the reference point position information of the required curvature. The reference point position information includes coordinate information, including the 'a' value in the left and right directions and the 'b' value in the vertical direction.

[0067] Step 2: Obtain the placement information of the corresponding simulated lens based on the reference point position information. The placement information of the lower surface of the simulated lens includes the left and right position information relative to the side wall of the coating cavity, the height position information relative to the bottom plate 3 of the coating cavity, and the tilt angle information.

[0068] Step 3: Adjust the position of slider 4 according to the left and right position information, adjust the height of lens holder 1 according to the height position information, and adjust the angle of lens holder 1 according to the tilt angle information; when adjusting the angle, place a goniometer on the simulated lens on lens holder 1 to measure and adjust the angle.

[0069] In step one, the lower surface of the lens is placed tangent to the curve corresponding to the curvature at the reference point.

[0070] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A fixture for coating simulated lenses with adjustable mirror curvature, characterized in that, Includes a base plate, the upper side of which is provided with a transverse sliding groove and an movable opening arranged front and rear; It also includes at least two support units, each support unit comprising a slider slidably connected to the transverse groove, the slider being in close contact with the upper side of the base plate; The support unit also includes a vertically arranged adjustment plate, on which two vertically arranged sliding grooves are formed; at least one of the two vertical sliding grooves passes through the upper locking member and is connected to the slider; The support unit also includes a lens holder. The movable port is used to adjust the plate and the lens holder to move up and down. The lens holder includes a base and a limiting ring. The base has an installation groove. The installation groove is threadedly connected to the limiting ring. The bottom of the installation groove is provided with a boss that supports the lower edge of the simulated lens. The boss and the limiting ring clamp the edge of the simulated lens. The central axis of the mounting groove and the central axis of the base plate are in the same vertical plane; A lower locking member is installed on the base. The lower locking member passes through either of the two vertical sliding grooves. The base and the locking nut of the lower locking member, which is threadedly connected, are clamped on the front and rear sides of the adjusting plate.

2. The simulated lens coating fixture with adjustable mirror curvature according to claim 1, characterized in that: The limiting ring has two mirror-symmetrical notches on the side away from the boss.

3. The simulated lens coating fixture with adjustable mirror curvature according to claim 2, characterized in that: The limiting ring is inserted into a transmission plate through the notch.

4. The simulated lens coating fixture with adjustable mirror curvature according to claim 1, characterized in that: The end face of the base adjacent to the adjusting plate is a plane, and the plane abuts against the adjusting plate.

5. The simulated lens coating fixture with adjustable mirror curvature according to claim 1, characterized in that: The bottom side of the base plate has a strip-shaped opening that connects with the bottom of the slider; A locking screw is threaded to the bottom of the slider, and the locking screw passes through the strip-shaped opening and is connected to the slider.

6. The simulated lens coating fixture with adjustable mirror curvature according to claim 1, characterized in that: The end of the slider is connected to two upper locking members arranged side by side; The adjusting plate is fixed relative to the slider by two upper locking pieces passing through the same vertical slider; The side of the adjusting plate abuts against the end of the slider.

7. The simulated lens coating fixture with adjustable mirror curvature according to claim 1, characterized in that: The slider and the lens holder are connected to different sides of the adjustment plate in the thickness direction.

8. The simulated lens coating fixture with adjustable mirror curvature according to claim 1, characterized in that: The upper locking member and the lower locking member respectively pass through two vertical sliding grooves on the adjusting plate.

9. The simulated lens coating fixture with adjustable mirror curvature according to claim 1, characterized in that: The central axis of the lower locking member is perpendicular to the central axis of the base.

10. The adjustment method of the simulated lens coating fixture with adjustable mirror curvature according to claim 1, characterized in that, Includes the following steps: Step 1: In the 3D model of the mirror, retrieve the reference point position information of the required curvature. The reference point position information includes coordinate information, which includes the value of a in the left and right directions and the value of b in the vertical direction. Step 2: Obtain the placement information of the corresponding simulated lens based on the reference point position information. Simulate the placement information of the lower surface of the simulated lens, including the left and right position information relative to the side wall of the coating cavity, the height position information relative to the bottom plate of the coating cavity, and the tilt angle information. Step 3: Adjust the position of the slider according to the left and right position information, adjust the height of the lens mount according to the height position information, and adjust the angle of the lens mount according to the tilt angle information. During angle adjustment, a goniometer is placed on the simulated lens on the lens mount to measure and adjust the angle.

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