Bearing jig for optical lens coating

Abstract

The invention provides a bearing jig for optical lens coating, which comprises a bottom-layer thin plate, a middle-layer thin plate, an upper-cover thin plate, a first polishing surface, a second polishing surface, a plurality of first through holes and a plurality of second through holes, wherein the bottom-layer thin plate is provided with a first polishing surface; the second polishing surface of the upper cover thin plate and the middle layer thin plate form overlapping adsorption through an optical cement phenomenon, the middle layer thin plate is clamped between the bottom layer thin plate and the upper cover thin plate, the second through hole is used for placing an optical lens, the optical lens forms a lens part, the periphery of the lens part is annularly provided with an outer ring part, and the outer ring part is provided with a through hole. The thickness of the middle-layer thin plate is slightly larger than that of the outer ring part, the outer ring part is clamped by the bottom-layer thin plate and the upper cover thin plate, and a moving gap is formed, so that the coating yield and the coating quality of the optical lens are improved.

Description

[Technical field]

[0001] The invention relates to an optical lens supporting thin plate, and in particular to an optical lens coating supporting jig which utilizes brittle materials to overcome the problem of poor coating quality caused by bending of thin materials. [Background technology]

[0002] In the production process of optical lenses, coating is a key process. In order to improve production efficiency, manufacturers usually use a loading fixture to place a large number of lenses for coating at the same time. However, traditional loading fixtures are usually made of plastic injection or metal processing, which may cause coating quality problems in some cases.

[0003] First, the strength of plastic or metal materials is limited, especially when the holes and grooves on the supporting fixture are too densely designed, they are more prone to deformation. This deformation can cause the optical lens to be unstable during the coating process, which in turn affects the uniformity of the coating, resulting in inconsistent product quality and increasing the defect rate of production. Secondly, the coating operation is usually carried out in a high temperature environment, but the production environment may be in a cold room with strict temperature control. Therefore, when the supporting fixture made of plastic or metal materials experiences drastic temperature changes, it is prone to thermal expansion and cold contraction, further exacerbating the risk of deformation. This not only affects the coating effect of the optical lens, but may also shorten the life of the supporting fixture and increase production costs.

[0004] In order to deal with these problems, some manufacturers choose to increase the thickness of the bearing fixture to improve its ability to resist deformation. Although such improvements can prevent the deformation of the fixture to a certain extent, it has caused new problems. The thicker bearing fixture will interfere with the coated particles, so that the coating reaction time needs to be increased to reach the original film thickness of the thin plate, affecting production efficiency. In addition, in order to adapt to the thicker fixture, the hole groove is sometimes designed to be a cone hole to reduce the coating interference. Although this design can alleviate some angle interference problems, it also reduces the number of lenses that can be placed per unit area, reducing production efficiency.

[0005] In summary, there are many problems with traditional plastic or metal material support fixtures in the production of optical lens coating. These problems include deformation caused by insufficient structural strength, deformation caused by process environment temperature difference, reduced production efficiency caused by solving the deformation problem, and production costs derived from the scrapping of the support fixture due to deformation. This is the technical problem that the present invention aims to overcome.

[0006] In view of this, the inventor, with many years of experience in manufacturing, developing and designing related products, has designed and evaluated in detail the above-mentioned objectives, and has proposed a carrier jig for optical lens coating to solve the above-mentioned problems. [Summary of the invention]

[0007] The present invention provides a supporting jig for coating an optical lens to solve the above-mentioned technical problems existing in the prior art.

[0008] In order to achieve the above-mentioned object of the invention, the present invention provides a carrier jig for optical lens coating, comprising:

[0009] A bottom thin plate is provided with a plurality of first through holes, and the bottom thin plate forms a first polishing surface; a middle thin plate is overlapped and adsorbed on the first polishing surface by using the optical glue phenomenon, and the middle thin plate has a plurality of second through holes opposite to the first through hole; a top cover thin plate is formed with a second polishing surface, and the second polishing surface of the top cover thin plate overlaps and adsorbs with the middle thin plate by using the optical glue phenomenon, so that the middle thin plate is sandwiched between the bottom thin plate and the top cover thin plate, and the top cover thin plate has a plurality of third through holes opposite to the first through hole; wherein the second through hole is used to place an optical lens, the optical lens forms a lens portion, and the periphery of the lens portion is surrounded by an outer ring portion, and the thickness of the middle thin plate is slightly larger than the outer ring portion, and the bottom thin plate and the top cover thin plate sandwich the outer ring portion and form a wandering gap.

[0010] Preferably, the first perforated periphery of the bottom thin plate is used to support the outer ring portion of the optical lens, and the third perforated periphery of the upper cover thin plate is used to block the outer ring portion of the optical lens, and the middle thin plate can be replaced with different thicknesses to match the thickness of the optical lens.

[0011] Preferably, the aperture of the first through hole is smaller than the aperture of the second through hole, and the aperture of the third through hole is smaller than the aperture of the first through hole.

[0012] Preferably, the bottom thin plate, the middle thin plate and the upper cover thin plate are all made of inorganic brittle materials without metallic properties.

[0013] Preferably, the bottom thin plate, the middle thin plate and the upper cover thin plate are all made of glass.

[0014] Preferably, the materials of the bottom thin plate, the middle thin plate and the upper cover thin plate can each be selected from a single material combination of glass, quartz, ceramic, ruby, sapphire, silicon nitride, silicon carbide and monocrystalline silicon, or a combination of two or more composite materials.

[0015] Preferably, the combined thickness of the bottom sheet and the middle sheet is between 0.3 mm and 1 mm, and the thickness of the upper cover sheet is between 0.2 mm and 0.3 mm.

[0016] Preferably, the roughness of both surfaces of the middle thin plate is between 1nm and 20nm, the roughness of the first polished surface of the bottom thin plate is between 1nm and 10nm, and the roughness of the second polished surface of the upper cover thin plate is between 11nm and 20nm.

[0017] Preferably, a small amount of water is sprayed on the first polishing surface of the bottom thin plate to form a capillary action between the bottom thin plate and the middle thin plate to achieve a strong adsorption effect.

[0018] Preferably, the upper cover plate and the middle thin plate are both disc-shaped and overlap with each other, and the outer edges of the bottom thin plate and the upper cover plate are both protruding from the outer edges of the middle thin plate to form an inner concave ring portion. Applying force to the inner concave ring portion can separate the upper cover plate from the middle thin plate, thereby taking out the optical lens.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The first main purpose of the present invention is to place the optical lens in the second perforation of the middle thin plate, and the bottom thin plate and the upper cover thin plate are adsorbed on both sides of the middle thin plate by pressing, and form a position limit for the optical lens. After the coating operation is completed, the upper cover thin plate can be separated by applying a slight external force, thereby separating the upper cover thin plate and taking out the optical lens that has completed the coating, so that the optical lens can be evenly coated with a thin film, and the optical lens can be easily taken out, and the bottom thin plate, the middle thin plate and the upper cover thin plate can be reused, thereby achieving both low production cost and high processing yield.

[0021] The second main purpose of the present invention is that the bottom thin plate, the middle thin plate and the upper cover thin plate are inorganic brittle materials without metallic properties. The characteristics of the brittle materials can prevent concave deformation in the center, thereby effectively reducing the overall thickness and placing more optical lenses in the same area. Moreover, through the mutual adsorption of the bottom thin plate, the middle thin plate and the upper cover thin plate, it is not easy to be too thin and brittle, thereby achieving the highest production density and an innovative design that can be modularly and quickly adjusted according to the design value of the optical lens.

[0022] Other objects, advantages and novel features of the present invention will become more apparent from the following detailed description and the associated drawings.

Brief Description of the Drawings

[0023] Figure 1 It is a three-dimensional exploded view of the present invention.

[0024] Figure 2 A partial cross-sectional view of placing an optical lens according to the present invention.

[0025] Figure 3 It is a schematic diagram of the action of separating the upper cover thin plate of the present invention.

[0026] Figure 4 It is a schematic diagram of the action of taking out the optical lens of the present invention.

[0027] In the figure:

[0028] 10: bottom thin plate, 101: wandering gap 102: inner concave ring, 11: first through hole, 12: first polishing surface, 20: middle thin plate, 21: second through hole, 30: upper cover thin plate, 31: second polishing surface, 32:

[0029] The third perforation, 40: optical lens, 41: lens part, 42: outer ring part [Specific implementation method]

[0030] See also Figures 1 to 4 , a carrier jig for coating an optical lens, comprising: a bottom sheet 10, a middle sheet 20 and a cover sheet 30, a bottom sheet 10 is provided with a plurality of first through holes 11, the bottom sheet 10 is formed with a first polished surface 12, a middle sheet 20 is overlapped and adsorbed on the first polished surface 12 by using a photoresist phenomenon, the middle sheet 20 is provided with a plurality of second through holes 21 facing the first through hole 11, a cover sheet 30 is formed with a second polished surface 31, and the second polished surface 31 of the cover sheet 30 is overlapped and adsorbed with the middle sheet 20 by using a photoresist phenomenon, so that the middle sheet 20 is sandwiched between the bottom sheet 10 and the cover sheet 30, and the cover sheet 30 is provided with a plurality of third through holes 31 facing the first through hole 11 2, wherein the second through hole 21 is used to place an optical lens 40, the optical lens 40 is formed with a lens portion 41, and the periphery of the lens portion 41 is provided with an outer ring portion 42, and the thickness of the middle thin plate 20 is slightly larger than the outer ring portion 42, and the bottom thin plate 10 and the upper cover thin plate 30 sandwich the outer ring portion 42 and form a floating gap 101, accordingly, the bottom thin plate 10 has the function of carrying the optical lens 40, and the upper cover thin plate 30 has the function of preventing the optical lens 40 from jumping off the middle thin plate 20, and the middle thin plate 20 can not only change its thickness according to the design value of the optical lens 40, but also provide sufficient floating gap 101, thereby preventing the optical lens 40 from being squeezed and deformed, and facilitating the rapid removal of the optical lens 40.

[0031] Among them, the bottom thin plate 10, the middle thin plate 20 and the upper cover thin plate 30 are all disc-shaped and overlap each other, and the outer edges of the bottom thin plate 10 and the upper cover thin plate 30 are both protruding from the outer edge of the middle thin plate 20 to form an inner concave ring portion 102. Applying force to the inner concave ring portion 102 can separate the upper cover thin plate 30 from the middle thin plate 20, thereby removing the optical lens 40 without damaging the upper cover thin plate 30.

[0032] The optical lens 40 is placed through the bottom sheet 10, the middle sheet 20 and the upper cover sheet 30, which is convenient for moving and coating the optical lens 40. The coating process includes physical vapor deposition (PVD) and atomic layer deposition (ALD), but is not limited to the above two coating methods. The upper cover sheet 30 is provided with a plurality of third perforations 32 for the second perforation 21. The optical lens 40 is coated by the third perforations 32. After the coating process is completed, an external force is applied to the upper cover sheet 30 to overcome the adsorption force between the upper cover sheet 30 and the middle sheet 20, so as to separate the upper cover sheet 30 and take out the coated optical lens 40, thereby ensuring that the optical lens 40 can be evenly coated with a thin film, and can be easily taken out, and can be reused, so as to have both low production cost and high processing yield.

[0033] For further explanation, see Figures 1 to 4 The first through hole 11 of the bottom sheet 10, the second through hole 21 of the middle sheet 20 and the third through hole 32 of the cover sheet 30 are all co-centered and equidistantly distributed on the sheet, the aperture of the first through hole 11 is smaller than the aperture of the second through hole 21, and the aperture of the third through hole 32 is smaller than the aperture of the first through hole 11, whereby the periphery of the first through hole 11 of the bottom sheet 10 is used to support the outer ring portion 42 of the optical lens 40, and the periphery of the third through hole 32 of the cover sheet 30 is used to block the outer ring portion 42 of the optical lens 40, and the middle The bottom sheet 20 can be changed to different thicknesses to match the thickness of the optical lens 40. By processing the bottom sheet 10, the middle sheet 20 and the top cover sheet 30 to form the first through hole 11, the second through hole 21 and the third through hole 32, it is only necessary to form through holes of the same diameter on the same sheet to complete the production of the bottom sheet 10, the middle sheet 20 and the top cover sheet 30, thereby reducing the processing difficulty and processing cost, especially when made of brittle materials, it is necessary to avoid forming stepped holes or oblique holes. Among them, the superimposed thickness of the bottom sheet 10 and the middle sheet 20 is between 0.3mm and 1mm, and the thickness of the top cover sheet 30 is between 0.2mm and 0.3mm. Furthermore, the optimal thickness of the bottom thin plate 10 and the upper cover thin plate 30 are both 0.3 mm, and the thickness of the middle thin plate 20 is between 0.3 mm and 0.7 mm, so that the total thickness of the bottom thin plate 10, the middle thin plate 20 and the upper cover thin plate 30 is less than 1.3 mm. The thin plate-shaped bottom thin plate 10 and the upper cover thin plate 30 can reduce the impact on the coating angle, and thereby shorten the relative distance of each optical lens 40, so that more optical lenses 40 can be arranged within the unit area of ​​the middle thin plate 20, which is beneficial to increase the output of a single coating operation.

[0034] To further explain the material properties, the bottom thin plate 10, the middle thin plate 20 and the upper cover thin plate 30 are all made of inorganic brittle materials without metallic properties. The characteristics of the brittle materials can prevent the center from being concave and deformed, thereby effectively reducing the overall thickness and accommodating more of the optical lenses 40 in the same area. Moreover, through the smooth surfaces of the bottom thin plate 10, the middle thin plate 20 and the upper cover thin plate 30 adsorbing each other, the overlapping thickness is not easy to be too thin and brittle, thereby achieving the highest production density and the innovative design that can be modularly and quickly adjusted according to the design value of the optical lens 40. Among them, the materials of the bottom thin plate 10, the middle thin plate 20 and the upper cover thin plate 30 can be selected from a single material combination of glass, quartz, ceramics, ruby ​​​​and sapphire, silicon nitride, silicon carbide and monocrystalline silicon, or a combination of two or more composite materials. When the bottom thin plate 10, the middle thin plate 20 and the upper cover thin plate 30 are all made of glass, they have the advantages of easy processing and low material cost.

[0035] Further reading Figures 1 to 4 The process flow of the coating operation includes the following steps: step 1, using a pressing method to allow the first polished surface 12 of the bottom sheet 10 and the middle sheet 20 to form a smooth surface without glue adsorption, at which time the first through hole 11 and the second through hole 21 overlap concentrically; step 2, inserting the optical lens 40 into the second through hole 21 from one side of the middle sheet 20, and the outer ring portion 42 of the optical lens 40 is supported on the bottom sheet 10, so that the middle sheet 20 is surrounded by the outer edge of the outer ring portion 42; step 3, using a pressing method to allow the upper cover sheet The second polished surface 31 of 30 forms a smooth surface with glue-free adsorption with the middle thin plate 20, so that the third through-hole 32 of the upper cover thin plate 30 is opposite to the second through-hole 21, and the optical lens 40 is exposed from the third through-hole 32; step 4, coating the optical lens 40 so that at least one layer of thin film is formed on the surface of the optical lens 40; step 5, applying force at the inner concave ring portion 102 to separate the upper cover thin plate 30 from the middle thin plate 20; step 6, after separating the upper cover thin plate 30, take out the optical lens 40 after coating. The above-described action flow can ensure that the bottom thin plate 10, the middle thin plate 20 and the upper cover thin plate 30 complete the coating operation of the optical lens 40 without deformation, thereby improving the production yield, and utilizing the photoresist phenomenon for adhesive-free adsorption, which has the effect of repeated use. In addition, by selecting inorganic brittle materials without metallic properties, the overall thickness can be further reduced and more optical lenses 40 can be placed under the same unit area, thereby effectively increasing the processing volume of a single coating operation.

[0036] To further explain its main technical means, the invention controls the surface smoothness of the bottom thin plate 10, the middle thin plate 20 and the upper cover thin plate 30. When the contact surfaces between them are smooth enough, the optical glue phenomenon can be used to make the short-range attraction (Van der Waals force: Van der Waals force) between the surface atoms or molecules Forces) are used to achieve the purpose of combining the bottom sheet 10, the middle sheet 20 and the upper cover sheet 30, wherein the roughness of the two surfaces of the middle sheet 20 is between 1nm and 20nm, the roughness of the first polished surface 12 of the bottom sheet 10 is between 1nm and 10nm, and the roughness of the second polished surface 31 of the upper cover sheet 30 is between 11nm and 20nm, thereby not only achieving the purpose of adsorption and bonding, but also controlling the roughness of the first polished surface 12 to be lower than the roughness of the second polished surface 31. When forces are applied to the bottom sheet 10 and the upper cover sheet 30 at the same time, the adsorption force at the upper cover sheet 30 is weaker, so that the upper cover sheet 30 will be preferentially separated from the middle sheet 20, while the bottom sheet 10 is still adsorbed on the middle sheet 20, thereby facilitating the reuse and removal of the optical lens 40. Furthermore, a small amount of water can be sprayed on the first polished surface 12 of the bottom sheet 10 to form a capillary action between the bottom sheet 10 and the middle sheet 20 to enhance the adsorption effect, thereby effectively improving the adsorption force of the bottom sheet 10 on the middle sheet 20.

[0037] The above is only a preferred embodiment of the present invention and should not be used to limit the scope of the present invention. That is, equivalent changes and modifications made according to the scope of the patent application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A carrier jig for optical lens coating, characterized in that: include: A bottom thin plate is provided with a plurality of first through holes and the bottom thin plate is formed with a first polished surface; A middle thin plate, which is overlapped and adsorbed on the first polishing surface by using the photoresist phenomenon, and the middle thin plate is provided with a plurality of second through holes corresponding to the first through hole; An upper cover plate is formed with a second polished surface, and the second polished surface of the upper cover plate and the middle layer plate are overlapped and adsorbed by optical bonding, so that the middle layer plate is sandwiched between the bottom layer plate and the upper cover plate, and the upper cover plate is provided with a plurality of third through holes corresponding to the first through hole; The second through hole is used to place an optical lens, which has a lens portion, and an outer ring portion is arranged around the periphery of the lens portion. The thickness of the middle thin plate is slightly larger than the outer ring portion, and the bottom thin plate and the upper cover thin plate clamp the outer ring portion and form a floating gap.

2. The optical lens coating carrier according to claim 1, characterized in that: The first perforated periphery of the bottom thin plate is used to support the outer ring portion of the optical lens, and the third perforated periphery of the upper cover thin plate is used to block the outer ring portion of the optical lens, and the middle thin plate can be replaced with different thicknesses to match the thickness of the optical lens.

3. The optical lens coating carrier according to claim 1, characterized in that: The aperture of the first through hole is smaller than that of the second through hole, and the aperture of the third through hole is smaller than that of the first through hole.

4. The optical lens coating carrier according to claim 1, characterized in that: The bottom thin plate, the middle thin plate and the upper cover thin plate are all made of inorganic brittle materials without metal properties.

5. The optical lens coating carrying jig according to claim 1, characterized in that: The bottom thin plate, the middle thin plate and the upper cover thin plate are all made of glass material.

6. The optical lens coating carrying jig according to claim 1, characterized in that: The materials of the bottom thin plate, the middle thin plate and the upper cover thin plate can be selected from a single material combination of glass, quartz, ceramics, ruby, sapphire, silicon nitride, silicon carbide and monocrystalline silicon, or a combination of two or more composite materials.

7. The optical lens coating carrying jig according to claim 1, characterized in that: The combined thickness of the bottom sheet and the middle sheet is between 0.3 mm and 1 mm, and the thickness of the upper cover sheet is between 0.2 mm and 0.3 mm.

8. The optical lens coating carrying jig according to claim 1, characterized in that: The roughness of both surfaces of the middle thin plate is between 1nm and 20nm, the roughness of the first polished surface of the bottom thin plate is between 1nm and 10nm, and the roughness of the second polished surface of the cover thin plate is between 11nm and 20nm.

9. The optical lens coating carrying jig according to claim 8, characterized in that: A trace amount of water is sprayed on the first polishing surface of the bottom thin plate to form a capillary action between the bottom thin plate and the middle thin plate to achieve a strong adsorption effect.

10. The optical lens coating carrying jig according to claim 8, characterized in that: The upper cover plate and the middle thin plate are both disc-shaped and overlap each other, and the outer edges of the bottom thin plate and the upper cover plate are both protruding from the outer edges of the middle thin plate to form an inner concave ring portion. Applying force to the inner concave ring portion can separate the upper cover plate from the middle thin plate, thereby taking out the optical lens.

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