CN114083817B - A mold suitable for WLO optical products and a manufacturing method thereof - Google Patents
A mold suitable for WLO optical products and a manufacturing method thereof Download PDFInfo
- Publication number
- CN114083817B CN114083817B CN202111350892.4A CN202111350892A CN114083817B CN 114083817 B CN114083817 B CN 114083817B CN 202111350892 A CN202111350892 A CN 202111350892A CN 114083817 B CN114083817 B CN 114083817B
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- CN
- China
- Prior art keywords
- glass substrate
- plano
- convex lens
- wlo
- top surface
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- 230000003287 optical effect Effects 0.000 title claims abstract 8
- 238000004519 manufacturing process Methods 0.000 title claims abstract 3
- 239000011521 glass Substances 0.000 claims abstract 17
- 239000000758 substrate Substances 0.000 claims abstract 17
- 238000005482 strain hardening Methods 0.000 claims abstract 2
- 230000001788 irregular Effects 0.000 claims 2
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 230000003746 surface roughness Effects 0.000 abstract 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
- B29D11/0048—Moulds for lenses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/06—Joining glass to glass by processes other than fusing
- C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Ceramic Engineering (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Surface Treatment Of Glass (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
本发明公开了一种适用于WLO光学产品的模具及其制造方法，包括采用冷加工制成的玻璃基底和平凸透镜；玻璃基底的顶面为平面，玻璃基底的顶面上设置有若干个与玻璃基底顶面垂直的安装孔，平凸透镜包括顶部和底部，平凸透镜的底部位于安装孔中，平凸透镜的顶部从玻璃基底顶面伸出，平凸透镜的顶部形状与待生产的产品形状相同。模具表面粗糙度小，制成的产品面型一致性好，提高了产品的良品率。
The invention discloses a mold suitable for WLO optical products and a manufacturing method thereof, comprising a glass substrate and a plano-convex lens made by cold working; the top surface of the glass substrate is a plane, a plurality of mounting holes perpendicular to the top surface of the glass substrate are arranged on the top surface of the glass substrate, the plano-convex lens comprises a top and a bottom, the bottom of the plano-convex lens is located in the mounting hole, the top of the plano-convex lens extends from the top surface of the glass substrate, and the top shape of the plano-convex lens is the same as the shape of the product to be produced. The mold surface roughness is small, the surface shape of the manufactured product is consistent, and the product yield is improved.
Description
Technical Field
The invention belongs to the field of WLO wafer level optics, and relates to a die suitable for WLO optical products and a manufacturing method thereof.
Background
With the development of modern optical processing industry, WLO wafer-level optical processing is favored; WLO wafer level optical elements refer to wafer level lens fabrication techniques and processes. Different from the processing technology of the traditional optical element, the WLO process is used for copying and processing the lens on the whole glass wafer in batches by using a semiconductor process, and the lens wafers are pressed together and then cut into single lenses, so that the wafer has the characteristics of small size, low height, good consistency and the like. The traditional lens is manufactured by optical cold working, and has low process complexity and low yield. However, the modern industry provides a basis for wafer-level optical processing, has high processing precision, can manufacture thousands of lens at a time and is used for subsequent mass production. Wafer level optical processing involves a mold, and the product is formed by mold turnover-imprinting. The mold is a serious issue in wafer level optical processing. The traditional die is made of steel nickel plating material, the surface shape of the die is subjected to CNC processing lathe, obvious lathe tool lines are easy to form, the surface roughness is difficult to reduce, the transmittance of light beams is seriously reduced, and obviously, the nickel plating material is not allowed for an imaging lens.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a die suitable for WLO optical products and a manufacturing method thereof, wherein the die has small surface roughness, the manufactured products have good surface shape consistency, and the yield of the products is improved.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
A mold suitable for WLO optical products comprising a glass substrate and a plano-convex lens;
The top surface of the glass substrate is a plane, a plurality of mounting holes perpendicular to the top surface of the glass substrate are formed in the top surface of the glass substrate, the plano-convex lens comprises a top and a bottom, the bottom of the plano-convex lens is located in the mounting holes, the top of the plano-convex lens extends out of the top surface of the glass substrate, and the shape of the top of the plano-convex lens is the same as that of a product to be produced.
Preferably, a plurality of mounting holes are formed in the top surface of the glass substrate, and the plurality of mounting holes are arranged in an array or staggered manner.
Preferably, the spacing between adjacent mounting holes is at least 0.2mm.
Preferably, the glass substrate has a thickness of 2 to 3mm.
Preferably, the top of the glass substrate is provided with a mark for abutment recognition.
Preferably, the cross section of the mounting hole is circular, polygonal or irregular, and the bottom cross section of the plano-convex lens has the same shape as the cross section of the mounting hole.
Preferably, the shape of the vertical section of the top of the plano-convex lens is a sphere, a free-form surface, a special-form surface, an inclined surface, a plane or a conical surface, and the shape of the cross section of the top of the plano-convex lens is a circle, a polygon or an irregular shape.
Preferably, the bottom of the glass base is provided with a glass substrate.
Further, the thickness of the glass substrate is 1 to 3mm.
A method of manufacturing a mould suitable for use in WLO optical products based on any one of the above, comprising the steps of:
the glass substrate and the plano-convex lens are manufactured by cold working, and the plano-convex lens is placed in the mounting hole and fixed.
Compared with the prior art, the invention has the following beneficial effects:
The mold disclosed by the invention has the advantages that the glass substrate and the planoconvex lens are adopted as the mold, the structure is simple, the cost is low, the manufacturing is convenient, the surface roughness can be as low as nano-scale, the manufactured product has high yield and good surface shape consistency.
The manufacturing method of the mold adopts cold processing to manufacture the glass substrate and the planoconvex lens, and has convenient manufacture and low manufacturing cost.
Drawings
FIG. 1 is a schematic diagram of a mold structure according to the present invention;
FIG. 2 is a schematic view of a glass substrate structure according to the present invention;
FIG. 3 is a schematic view of a plano-convex lens according to the present invention;
fig. 4 is a schematic view of the structure of a glass substrate according to the present invention.
Wherein: 1-a glass substrate; 2-plano-convex lenses; 3-a glass substrate; 4-mounting holes.
Detailed Description
The invention is described in further detail below with reference to the attached drawing figures:
as shown in FIG. 1, a mold for WLO optical products according to the present invention comprises a glass substrate 1, a glass substrate 3 and a plano-convex lens 2
The top surface of the glass substrate 1 is a plane, the material is a common glass material, and in order to avoid the warpage of the glass substrate 1, the thickness of the glass substrate 1 is 2-3 mm.
As shown in fig. 2, according to the actual caliber of the product, the top surface of the glass substrate 1 is provided with a plurality of mounting holes 4 perpendicular to the top surface of the glass substrate 1, the mounting holes 4 can be arranged in a straight line or staggered at different angles, and the cutting process is considered to avoid mutual interference between the cuts after the product is manufactured, and the interval between the adjacent mounting holes 4 is at least 0.2mm.
The mounting holes 4 may be circular, square, or trapezoidal, polygonal, or irregular.
The top of the glass substrate 1 is provided with a mark for abutment recognition.
As shown in fig. 3, the plano-convex lens 2 includes a top and a bottom, the bottom of the plano-convex lens 2 is located in the mounting hole 4, the top of the plano-convex lens 2 protrudes from the top surface of the glass substrate 1, the top of the plano-convex lens 2 is convex, and the shape of the top of the plano-convex lens 2 is the same as the shape of the product to be produced.
The top of the plano-convex lens 2 can be spherical, aspheric, free-form, irregular, inclined, trapezoidal, planar, irregular, conical, trapezoidal (stepped-up/stepped-down), triangular (triangular-up/triangular-down), or polygonal (polygonal-up/polygonal-down)
As shown in fig. 4, the shape of the glass substrate 3 is the same as that of the glass substrate 1, the glass substrate 3 ensures that the bottom surface of the plano-convex lens 2 is flush with the bottom surface of the glass substrate 1, the contact area is increased, the bonding force after bonding is improved, and the thickness of the glass substrate 3 is 1-3 mm.
As shown in fig. 1, the bottom of the plano-convex lens 2 is located in the mounting hole 4, and the bottom of the glass base 1 is provided with a glass substrate 3.
The manufacturing method of the mold comprises the steps of manufacturing a glass substrate 1, a glass substrate 3 and a plano-convex lens 2 by cold working, placing the plano-convex lens 2 into a mounting hole 4, bonding by optical adhesive, placing the glass substrate 3 below the glass substrate 1, uniformly smearing high-strength optical adhesive on substrate glass, bonding the top surface of the glass substrate 3 and the bottom surface of the glass substrate 1, and drying the adhesive under the condition that the plano-convex lens 2 and the glass substrate 1 are strictly and vertically.
The glue bonding process may be curing with an optical glue (a thermosetting glue or a UV glue).
The mold manufactured according to the above procedure, as shown in fig. 1, selects one of them as an example:
The glass substrate 1 is round, the thickness is 2.5mm, the diameter is 100mm, the mounting holes 4 are round through holes, the diameter of the mounting holes 4 is 1.4mm according to the actual caliber of a product, and the number of the mounting holes 4 is 587.
The bottom of the plano-convex lens 2 is cylindrical, the diameter is 1.4mm, the height is 2.5mm, the top is spherical, and the total height of the plano-convex lens 2 is 2.69mm.
The thickness of the substrate glass is 1.5mm, and the diameter is the same as that of the glass base 1.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (5)
1. A mould suitable for WLO optical products, characterized by comprising a glass substrate (1) and a plano-convex lens (2);
The top surface of the glass substrate (1) is a plane, a plurality of mounting holes (4) perpendicular to the top surface of the glass substrate (1) are formed in the top surface of the glass substrate (1), the plano-convex lens (2) comprises a top and a bottom, the bottom of the plano-convex lens (2) is positioned in the mounting holes (4), the top of the plano-convex lens (2) extends out of the top surface of the glass substrate (1), and the shape of the top of the plano-convex lens (2) is the same as that of a product to be produced;
A plurality of mounting holes (4) are formed in the top surface of the glass substrate (1), and the plurality of mounting holes (4) are arrayed;
The top of the glass substrate (1) is provided with a mark for identifying the base station;
the cross section of the mounting hole (4) is circular, polygonal or irregular, and the bottom cross section of the plano-convex lens (2) is the same as the cross section of the mounting hole (4);
the shape of the vertical section of the top of the plano-convex lens (2) is a sphere, a free-form surface or a plane, and the shape of the cross section of the top of the plano-convex lens (2) is a circle, a polygon or an irregular shape;
the bottom of the glass substrate (1) is adhered with a glass substrate (3) by optical adhesive.
2. A mould for WLO optical products as claimed in claim 1, characterized in that the spacing between adjacent mounting holes (4) is at least 0.2mm.
3. A mould for WLO optical products as claimed in claim 1, characterized in that the glass substrate (1) has a thickness of 2-3 mm.
4. A mould for WLO optical products according to claim 1, characterized in that the glass substrate (3) has a thickness of 1-3 mm.
5. A method of manufacturing a mould for WLO optical products as claimed in any one of claims 1-4, comprising the following steps:
The glass substrate (1) and the plano-convex lens (2) are manufactured by cold working, and the plano-convex lens (2) is placed in the mounting hole (4) and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111350892.4A CN114083817B (en) | 2021-11-15 | 2021-11-15 | A mold suitable for WLO optical products and a manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111350892.4A CN114083817B (en) | 2021-11-15 | 2021-11-15 | A mold suitable for WLO optical products and a manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114083817A CN114083817A (en) | 2022-02-25 |
| CN114083817B true CN114083817B (en) | 2024-11-19 |
Family
ID=80300712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111350892.4A Active CN114083817B (en) | 2021-11-15 | 2021-11-15 | A mold suitable for WLO optical products and a manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114083817B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104526929A (en) * | 2015-01-09 | 2015-04-22 | 上海理工大学 | Wafer lens array mold with moth eye imitative random array nanometer sunken structures and preparation method of wafer lens array mold |
| CN210477661U (en) * | 2019-09-06 | 2020-05-08 | 李凡月 | Novel impression injection mold |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2011093502A1 (en) * | 2010-02-01 | 2013-06-06 | コニカミノルタアドバンストレイヤー株式会社 | Lens unit manufacturing method, imaging device, mold manufacturing method, molding mold, and glass lens array molding method |
| US9379153B2 (en) * | 2010-04-22 | 2016-06-28 | Visera Technologies Company Limited | Method for forming image sensing device |
-
2021
- 2021-11-15 CN CN202111350892.4A patent/CN114083817B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104526929A (en) * | 2015-01-09 | 2015-04-22 | 上海理工大学 | Wafer lens array mold with moth eye imitative random array nanometer sunken structures and preparation method of wafer lens array mold |
| CN210477661U (en) * | 2019-09-06 | 2020-05-08 | 李凡月 | Novel impression injection mold |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114083817A (en) | 2022-02-25 |
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