CN110531449A - The production method of single side and two-sided microlens array - Google Patents
The production method of single side and two-sided microlens array Download PDFInfo
- Publication number
- CN110531449A CN110531449A CN201910828833.XA CN201910828833A CN110531449A CN 110531449 A CN110531449 A CN 110531449A CN 201910828833 A CN201910828833 A CN 201910828833A CN 110531449 A CN110531449 A CN 110531449A
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- Prior art keywords
- camera lens
- lens mold
- microlens array
- substrate
- colloid
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0012—Arrays characterised by the manufacturing method
- G02B3/0031—Replication or moulding, e.g. hot embossing, UV-casting, injection moulding
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The present invention provides the production methods of a kind of single side and two-sided microlens array, comprising: provides camera lens mold and substrate, forms the multiple and matched micro-structure of microlens shape on the coining side of the camera lens mold；The camera lens mold and the substrate are pressed, and solidify the colloid；Obtain single side microlens array.First camera lens mold and the second lens module are provided, the first camera lens mold and the second camera lens mold are pressed, and solidify the colloid；Obtain two-sided microlens array.Single side microlens array and two-sided microlens array are formed by pressing to be integrally formed using this method, no longer need substrate or substrate, meet product reliability requirement of experiment, service life is increased substantially, avoiding traditional structure glue-line and falling off leads to the problem of microlens array (MLA) and strippable substrate are so as to cause failure.
Description
Technical field
The invention belongs to optics and electronic technology fields, and in particular to the production side of a kind of single side and two-sided microlens array
Method.
Background technique
For micro lens array by the array that clear aperature and relief depth are that micron-sized lens form, it not only has biography
The basic functions such as focusing, the imaging of system lens, and have the characteristics that unit size is small, integrated level is high, it allows it to complete
The impossible function of traditional optical elements, and many novel optical systems can be constituted.Currently with the development of modern technologies,
People require optical element minimize, is integrated, and microlens array obtains in optical field as optical element of new generation
It is widely applied.
Traditional microlens array (MLA) makes acquisition on substrate, and substrate is, for example, glass substrate or other materials
Substrate, and usually substrate and microlens array (MLA) for example ultimately form an entirety use by glue-line bonding.However,
Lead to microlens array (MLA) and strippable substrate in the presence of since glue-line falls off, to make substrate and microlens array (MLA) formation
Product failure.
Summary of the invention
The purpose of the present invention is to provide the production methods of a kind of single side and two-sided microlens array, to improve lenticule battle array
The reliability of column, prolongs the service life.
To achieve the above object, the present invention provides a kind of production methods of single side microlens array, comprising:
Camera lens mold and substrate are provided, formed on the coining side of the camera lens mold multiple matched micro- with microlens shape
Structure；
Coating colloid on the substrate or on the coining side of the camera lens mold；
The camera lens mold and the substrate are pressed, and solidify the colloid；
The camera lens mold is separated from the colloid；
The substrate is separated from the colloid, obtains single side microlens array.
Further, the material of the substrate is glass, and the material of the colloid is UV glue.
Further, in two opposite faces of the single side microlens array, a face is plane, another face is array
It is spherical.
Further, the micro-structure includes: recess and/or protrusion.
Further, the production method of single side microlens array uses wafer scale preparation method, wherein the camera lens mold
For wafer-level lens mold, the substrate is wafer level substrate.
Further, the micro-structure is in array distribution.
The present invention also provides a kind of production methods of two-sided microlens array, comprising:
First camera lens mold and the second lens module are provided, formed on the coining side of the first camera lens mold it is multiple with it is micro-
Matched first micro-structure of lens first surface shape；It is formed on the coining side of the second camera lens mold multiple the with lenticule
Matched second micro-structure of two surface shapes；The lenticule first surface and the lenticule second surface are opposite；
In the coining side of the first camera lens mold or the coining side coating colloid of the second camera lens mold；
The first camera lens mold and the second camera lens mold are pressed, and solidify the colloid；
The first camera lens mold is separated from the colloid；
The second camera lens mold is separated from the colloid, obtains two-sided microlens array.
Further, the lenticule first surface and lenticule second surface are that array is spherical.
Further, the production method of two-sided microlens array uses wafer scale preparation method, wherein first camera lens
Mold and the second camera lens mold are wafer-level lens mold.
Further, the structure of the two-sided microlens array is the equal array distribution ball of both side surface of the entity of wafer-shaped
Shape structure.
Compared with prior art, the production method of single side provided by the invention and two-sided microlens array passes through pressing one
Body formed formation single side microlens array and two-sided microlens array, it is no longer necessary to which substrate or substrate meet product reliability reality
Requirement is tested, service life is increased substantially, avoiding traditional structure glue-line and falling off leads to microlens array (MLA) and strippable substrate
The problem of so as to cause failure.
Detailed description of the invention
Fig. 1 is the production method flow diagram of the single side microlens array of the embodiment of the present invention；
Fig. 2 to Fig. 6 is each step schematic diagram of production method of the single side microlens array of the embodiment of the present invention；
Fig. 7 is the production method flow diagram of the two-sided microlens array of the embodiment of the present invention；
Fig. 8 to Figure 13 is each step schematic diagram of production method of the two-sided microlens array of the embodiment of the present invention.
Wherein, appended drawing reference is as follows:
10- camera lens mold；20- substrate；31- the first camera lens mold；The second lens module of 32-；A '-colloid；B '-colloid.
Specific embodiment
The embodiment of the invention provides the production methods of a kind of single side and two-sided microlens array.Below in conjunction with attached drawing and tool
The present invention is described in more detail for body embodiment.According to following explanation, advantages and features of the invention will be become apparent from.It needs
Bright, attached drawing is all made of very simplified form and uses non-accurate ratio, only conveniently, lucidly to aid in illustrating originally
The purpose of inventive embodiments.
The embodiment of the present invention provides a kind of production method of single side microlens array, as shown in Figure 1, comprising:
Camera lens mold and substrate are provided, formed on the coining side of the camera lens mold multiple matched micro- with microlens shape
Structure；
Coating colloid on the substrate or on the coining side of the camera lens mold；
The camera lens mold and the substrate are pressed, and solidify the colloid；
The camera lens mold is separated from the colloid；
The substrate is separated from the colloid, obtains single side microlens array.
The production method of the single side microlens array of the embodiment of the present invention is discussed in detail below with reference to Fig. 2 to Fig. 6.
As shown in Figures 2 and 3, camera lens mold 10 and substrate 20 are provided, formed on the coining side of the camera lens mold 10 more
A and matched micro-structure of microlens shape；Micro-structure may include recess and/or protrusion, not limit the concrete shape of micro-structure
The shape of system, micro-structure is matched according to the shape of lenticule to be formed.The substrate 20 is, for example, glass substrate, is true
Protect below imprint when substrate 20 can secure support, heavy sheet glass substrate can be used.Remover can be coated in the micro-structure, with
Convenient for subsequent quick demoulding, the single side microlens array being subsequently formed is not damaged.
Coating colloid A ' on the substrate 20 or on the coining side of the camera lens mold 10.The material of the colloid A can
For UV glue.Specifically, can the dispensing at each micro-structure, can also coining side central area concentrate coating colloid.Point can be used
Glue machine dispensing, specific dispensing amount can be matched according to the size of lenticule to be formed to be arranged.
As shown in figure 4, the camera lens mold 10 and the substrate 20 are pressed, and solidify the patterned colloid A.It can
Using patterned colloid A described in ultraviolet light, make its solidification.
As shown in Figure 4 and Figure 5, the camera lens mold 10 is separated from the patterned colloid A.
As shown in fig. 6, the substrate 20 is separated from the patterned colloid A, the patterned colloid A is
Single side microlens array.In two opposite faces of the single side microlens array, a face is plane, another face is array ball
Shape.
The production method of the single side microlens array of the embodiment of the present invention, can be used wafer scale preparation method, specifically, institute
Stating camera lens mold is wafer-level lens mold, and the substrate is wafer level substrate, and the single side microlens array being thusly-formed is crystalline substance
Circle grade single side microlens array, specific structure can be that a physically side surface for wafer-shaped is plane, opposite another side surface
Array distribution has chondritic.The wafer scale single side microlens array can be cut to obtain single single side microlens array
(chip-scale).
Wafer scale single side microlens array is wafer level optical elements (WLO), using wafer-level lens manufacturing technology and work
Skill can process camera lens with semiconductor technology batch duplicating, and a plurality of lenses press together, and are then cut into single camera lens, volume
Advantage small, at low cost, being mass produced using semiconductor technology, and realize optical element in wafer scale and integrate, meet
Business level and consumer level are applied for cost, volume and production-scale requirement.
The embodiment of the present invention also provides a kind of production method of two-sided microlens array, as shown in fig. 7, comprises:
First camera lens mold and the second lens module are provided, formed on the coining side of the first camera lens mold it is multiple with it is micro-
Matched first micro-structure of lens first surface shape；It is formed on the coining side of the second camera lens mold multiple the with lenticule
Matched second micro-structure of two surface shapes；The lenticule first surface and the lenticule second surface are opposite；
In the coining side of the first camera lens mold or the coining side coating colloid of the second camera lens mold；
The first camera lens mold and the second camera lens mold are pressed, and solidify the colloid；
The first camera lens mold is separated from the colloid；
The second camera lens mold is separated from the colloid, obtains two-sided microlens array.
The production method of the two-sided microlens array of the embodiment of the present invention is discussed in detail below with reference to Fig. 8 to Figure 13.
As shown in Figure 8 and Figure 9, the first camera lens mold 31 and the second lens module 32, the first camera lens mold 31 are provided
Coining side on formed it is multiple with matched first micro-structure of lenticule first surface shape；The pressure of the second camera lens mold 32
Print forms multiple and matched second micro-structure of lenticule second surface shape on side；First micro-structure may include recess and/or
Protrusion, similarly the second micro-structure may also comprise recess and/or protrusion, not to the concrete shape of the first micro-structure and the second micro-structure
It is restricted, is matched according to the shape of lenticule to be formed.It can be in first micro-structure and second micro-structure
It coats remover and does not damage the two-sided microlens array being subsequently formed in order to subsequent quick demoulding.
As shown in Figure 10, in the coining side coating colloid B ' of the second camera lens mold 32；It should be understood that also can be described
The coining side coating colloid of first camera lens mold 31.The material of the colloid B ' can be UV glue.Specifically, can be in each micro-structure
Locate dispensing, coating colloid can also be concentrated in coining side central area.Dispenser dispensing can be used, specific dispensing amount can be according to wanting shape
At lenticule size match setting.
As shown in figure 11, the first camera lens mold 31 and the second camera lens mold 32 are pressed, and solidifies the glue
Body obtains patterned colloid B.Colloid described in ultraviolet light can be used, make its solidification.
As is illustrated by figs. 11 and 12, the first camera lens mold 31 is separated from the patterned colloid B.
As shown in Figure 12 and Figure 13, the second camera lens mold 32 is separated from the patterned colloid B, graphically
Colloid B be two-sided microlens array.Two opposite faces of the two-sided microlens array are that array is spherical.
The production method of the two-sided microlens array of the embodiment of the present invention, can be used wafer scale preparation method, specifically, institute
Stating the first camera lens mold and the second camera lens mold is wafer-level lens mold.The two-sided microlens array being thusly-formed is
The two-sided microlens array of wafer scale, specific structure can have chondritic for the equal array distribution of both side surface of the entity of wafer-shaped.
The two-sided microlens array of the wafer scale can be cut to obtain single two-sided microlens array (chip-scale).
The two-sided microlens array of wafer scale is wafer level optical elements (WLO), using wafer-level lens manufacturing technology and work
Skill can process camera lens with semiconductor technology batch duplicating, and a plurality of lenses press together, and are then cut into single camera lens, volume
Advantage small, at low cost, being mass produced using semiconductor technology, and realize optical element in wafer scale and integrate, meet
Business level and consumer level are applied for cost, volume and production-scale requirement.
In conclusion passing through pressing one using the single side of the embodiment of the present invention and the production method of two-sided microlens array
Body formed formation single side microlens array and two-sided microlens array directly imprint out full wafer UV glue using the characteristic of UV solidification glue
The microlens array MLA (no substrate) of material, is an integral molding structure, it is no longer necessary to which substrate or substrate meet product reliability
Requirement of experiment increases substantially service life, and avoiding traditional structure glue-line and falling off causes microlens array (MLA) and substrate to shell
The problem of from so as to cause failure.The light field angle (FOI) and outer after the (- 40C/+85 DEG C) tests of high/low temperature temperature cycles TC200 times
It sees without apparent variation, meets product reliability requirement of experiment, improve the service life of lenticule unit.This method can also be used in
Make traditional optical lens and diffraction optical device (DOE).
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For method disclosed in embodiment
For, as corresponding with device disclosed in embodiment, so being described relatively simple, related place is referring to method part illustration
.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Range.
Claims (10)
1. a kind of production method of single side microlens array characterized by comprising
Camera lens mold and substrate are provided, form the multiple and matched micro- knot of microlens shape on the coining side of the camera lens mold
Structure；
Coating colloid on the substrate or on the coining side of the camera lens mold；
The camera lens mold and the substrate are pressed, and solidify the colloid；
The camera lens mold is separated from the colloid；
The substrate is separated from the colloid, obtains single side microlens array.
2. the production method of single side microlens array as described in claim 1, which is characterized in that the material of the substrate is glass
Glass, the material of the colloid are UV glue.
3. the production method of single side microlens array as described in claim 1, which is characterized in that the single side microlens array
In two opposite faces, a face is plane, another face is that array is spherical.
4. the production method of single side microlens array as described in claim 1, which is characterized in that the micro-structure includes: recessed
It falls into and/or raised.
5. the production method of single side microlens array as described in claim 1, which is characterized in that use wafer scale preparation side
Method, wherein the camera lens mold is wafer-level lens mold, and the substrate is wafer level substrate.
6. the production method of single side microlens array as described in claim 1, which is characterized in that the micro-structure is in array point
Cloth.
7. a kind of production method of two-sided microlens array characterized by comprising
First camera lens mold and the second lens module are provided, form multiple and lenticule on the coining side of the first camera lens mold
Matched first micro-structure of first surface shape；Multiple and the second table of lenticule is formed on the coining side of the second camera lens mold
Matched second micro-structure of face shape；The lenticule first surface and the lenticule second surface are opposite；
In the coining side of the first camera lens mold or the coining side coating colloid of the second camera lens mold；
The first camera lens mold and the second camera lens mold are pressed, and solidify the colloid；
The first camera lens mold is separated from the colloid；
The second camera lens mold is separated from the colloid, obtains two-sided microlens array.
8. the production method of two-sided microlens array as claimed in claim 7, which is characterized in that the lenticule first surface
It is that array is spherical with the lenticule second surface.
9. the production method of two-sided microlens array as claimed in claim 7, which is characterized in that use wafer scale preparation side
Method, wherein the first camera lens mold and the second camera lens mold are wafer-level lens mold.
10. the production method of two-sided microlens array as claimed in claim 9, which is characterized in that the two-sided lenticule battle array
The structure of column is the equal array distribution chondritic of both side surface of the entity of wafer-shaped.
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| CN201910828833.XA CN110531449A (en) | 2019-09-03 | 2019-09-03 | The production method of single side and two-sided microlens array |
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| CN201910828833.XA CN110531449A (en) | 2019-09-03 | 2019-09-03 | The production method of single side and two-sided microlens array |
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Cited By (8)
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| CN111070742A (en) * | 2019-12-20 | 2020-04-28 | 豪威光电子科技（上海）有限公司 | Lens module, manufacturing method thereof and camera |
| CN111708110A (en) * | 2020-06-18 | 2020-09-25 | 欧菲微电子技术有限公司 | Preparation method of diffuser, diffuser and camera module |
| CN112099116A (en) * | 2020-09-07 | 2020-12-18 | 欧菲微电子技术有限公司 | Diffusion sheet and manufacturing method thereof, camera module and electronic equipment |
| CN112209333A (en) * | 2020-09-14 | 2021-01-12 | 南昌硅基半导体科技有限公司 | Temperature regulation-based surface two-stage microstructure preparation method by droplet forming method |
| CN112327391A (en) * | 2020-10-20 | 2021-02-05 | 上海悠睿光学有限公司 | Preparation method of micro-lens array, micro-lens array and under-screen fingerprint module |
| CN114609706A (en) * | 2022-04-27 | 2022-06-10 | 华天慧创科技（西安）有限公司 | Method for manufacturing stacked micro-lens array |
| CN115356795A (en) * | 2022-10-21 | 2022-11-18 | 成都万应微电子有限公司 | Optical switch packaging structure and process method thereof |
| CN118363099A (en) * | 2024-06-18 | 2024-07-19 | 华天慧创科技（西安）有限公司 | Preparation method of micro-nano optical wafer-level lens array |
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| CN111708110A (en) * | 2020-06-18 | 2020-09-25 | 欧菲微电子技术有限公司 | Preparation method of diffuser, diffuser and camera module |
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| CN112209333A (en) * | 2020-09-14 | 2021-01-12 | 南昌硅基半导体科技有限公司 | Temperature regulation-based surface two-stage microstructure preparation method by droplet forming method |
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| CN112327391A (en) * | 2020-10-20 | 2021-02-05 | 上海悠睿光学有限公司 | Preparation method of micro-lens array, micro-lens array and under-screen fingerprint module |
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| CN115356795A (en) * | 2022-10-21 | 2022-11-18 | 成都万应微电子有限公司 | Optical switch packaging structure and process method thereof |
| CN118363099A (en) * | 2024-06-18 | 2024-07-19 | 华天慧创科技（西安）有限公司 | Preparation method of micro-nano optical wafer-level lens array |
| CN118363099B (en) * | 2024-06-18 | 2024-09-27 | 华天慧创科技（西安）有限公司 | Preparation method of micro-nano optical wafer-level lens array |
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