CN101750642A - Compound lens and manufacturing method thereof - Google Patents
Compound lens and manufacturing method thereof Download PDFInfo
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- CN101750642A CN101750642A CN200810179799A CN200810179799A CN101750642A CN 101750642 A CN101750642 A CN 101750642A CN 200810179799 A CN200810179799 A CN 200810179799A CN 200810179799 A CN200810179799 A CN 200810179799A CN 101750642 A CN101750642 A CN 101750642A
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Abstract
The invention relates to a compound lens and a manufacturing method thereof. The compound lens comprises a lens matrix and at least one plastic layer, wherein the lens matrix is made of glass material; the plastic layer is coated on the lens matrix and is made of transparent plastics material, and at least one plastic layer is provided with a reference leaning surface. The manufacturing method of the compound lens comprises the following steps: (1) fixing the lens matrix in the moulding cavity of a mould, wherein the wall of the moulding cavity is provided with a leaning surface shaping part; (2) injecting flowing transparent plastic material into the moulding cavity by an injection hole, solidifying the transparent plastic material to form the plastic layer which is stuck with the transparent matrix and has a reference leaning surface; and (3) opening mould to take out the compound lens. The reference leaning surface of the invention is arranged on the plastic layer by the compound lens. When the compound lens is manufactured, the reference leaning surface can be directly generated in the process of moulding the plastic layer on the lens matrix so as to simplify manufacturing procedures, lower cost and improve the yield.
Description
Technical field
The present invention relates to a kind of lens technologies, relate in particular to a kind of compound lens and manufacture method thereof.
Background technology
In recent years, along with the lifting of the communication frequency range of personal hand-held device, the significantly increase of memory capacity, and the decline of unit price, the ratio of additional camera function module in the hand-held device is improved rapidly, and develop towards high image resolution (mega pixel) by low resolution (300,000 pixel).For satisfying to small-sized image pickup camera lens high image resolution, low cost, small size and mass-produced demand, except using conventional plastic eyeglass and modeling glass lens, the compound lens (Hybrid lens) that exploitation includes lens matrix also becomes one of project of development.
In order to take into account small size and requirement cheaply, the high image quality image quality is provided simultaneously, must use and include aspheric lens, satisfy these requirements with less eyeglass number, the all-plastic lens that the prior art major part penetrates with optical-grade plastic, the full glass lens that small part uses mould model to make reaches.Compound lens then is manufacturing cost and the lens element of quality between all-plastic lens and full glass lens, see also Fig. 1, current compound lens 100 ' employing glass plate as lens matrix 110 ', and lens matrix 110 ' incidence surface (also exiting surface) on add with transparent plastic layer 120 ', to constitute the needed aspheric surface of optical imagery interface.This compound lens 100 ' lens matrix 110 ' peripheral region be provided with the benchmark that is used to assemble the location by face 111 '.
The all-plastic lens generally adopt one-shot forming, compound lens then adopts makes lens matrix earlier, the segmentation manufacturing process of additional plastic material again, cost is higher, but most of volume because glass material accounts for, compare the all-plastic lens, compound lens integral body has comparatively excellent material homogenieity and environment tolerance level; Though and full glass aspheric lenses has best optical quality and uses degree of stability, but it adopts high temperature model operation, make its cost of manufacture higher, compound lens then has and complete close but slightly poor optical quality and the environment tolerance level of glass lens, but simple relatively manufacturing process makes the manufacturing cost of compound lens lower.
Because compound lens has the advantage that quality and cost of manufacture are taken into account, and has proposed many patents.As Japan specially permit No. 3926380, the special permission No. 3946245, and the special permission No. 3976780.Main protection domain is one the maqting type compound lens of positive flexion rate to be arranged; from object space to picture side by first lens, second lens, reach the 3rd lens and constitute; first lens and the 3rd lens are formed by hardening resin; second lens are that the optical glass material with high softening temperature forms; first lens engage with cement with second lens or directly engage; second lens engage with cement with the 3rd lens or directly engage, and satisfy following formula:
0≤|N3-N2|≤0.1，0≤|N4-N3|≤0.1，0≤|v3-v2|≤30，0≤|v3-v4|≤30
N2, N3, N4 are respectively the refractive index of aforementioned first lens, second lens, the 3rd lens, and v2, v3, v4 are respectively the Abba value of aforementioned first lens, second lens, the 3rd lens.
In above-mentioned Japanese laid-open patent the surface configuration of first lens, second lens and the 3rd lens can be satisfy simultaneously that first lens engage with second lens, second lens engage with the 3rd lens and constitute positive flexion lens various protruding, put down and concave surface; And the combination of aforementioned lens (contain first lens, second lens, with the 3rd lens).
First lens described in the above-mentioned Japanese laid-open patent and the 3rd lens are the plastic layer that hardening resin constituted, and its manufacturing materials is also replaceable to be other transparent plastic materials, and second lens are the lens matrix that a glass material is made.Be implemented on the compact high precision lens, the off-centre location of lens, the middle lens matrix than more stable and stronger of common dependence cooperates with clamping device to be finished, therefore the physical dimension to this lens matrix has point-device tolerance, the cell-phone camera module of resolving with height is an example, the eccentric accuracy requirement of lens is within ± 3 μ m, the deviation that limits the apparent size of this lens matrix relatively must be within ± 3 μ m, in addition because the compact high precision lens must adopt thin glass as material in using, make this lens matrix be difficult for volume production and make, cause this class compound lens cost of manufacture higher, the problem that qualification rate is not good.
Summary of the invention
The objective of the invention is provides the compound lens that a kind of manufacturing process is simple, cost is low at the defective that above-mentioned prior art exists, and the manufacture method of this compound lens is provided.
For achieving the above object, compound lens provided by the present invention comprises a lens matrix and at least one plastic layer, and lens matrix is made by glass material; Plastic layer is coated on the lens matrix, and plastic layer is made by transparent plastic material, and at least one plastic layer is provided with benchmark by face.
The manufacture method of compound lens provided by the present invention comprises the steps:
(1) lens matrix is fixed in the forming cavity of mould, the chamber wall of this forming cavity has one by the face forming part;
(2), and transparent plastic material is solidify to form with lens matrix be attached to and have the plastic layer of benchmark by face by the injection orifice transparent plastic material of flowable state of in forming cavity, annotating;
(3) compound lens is taken out in die sinking.
Compound lens of the present invention is by being arranged at benchmark on the plastic layer by face, when making compound lens, can be on lens matrix directly generates benchmark in the process of forming plastic cement layer and leans on face, thereby can simplify manufacturing process, reduce cost and improve qualification rate.
Description of drawings
Fig. 1 is conventional composite lens synoptic diagram.
Fig. 2 is the cut-open view of first kind of embodiment of compound lens of the present invention.
Fig. 3 is the synoptic diagram when lens matrix is installed in the mould in the compound lens manufacture process shown in Figure 2.
Fig. 4 is the cut-open view of second kind of embodiment of compound lens of the present invention.
Fig. 5 is the cut-open view of a kind of state of compound lens manufacture process shown in Figure 4.
Fig. 6 is the cut-open view of the another kind of state of compound lens manufacture process shown in Figure 4.
Wherein, description of reference numerals is as follows:
Compound lens 100 ' lens matrix 110 '
Plastic layer 120 ' benchmark by face 111 '
Plastic layer 120 incidence surface coating portions 121
122 periphery coating portions 123 of exiting surface coating portion
Benchmark is by face 1231 grooves 1232
First die, 210 first die cavitys 211
By face forming part 2111 injection orifices 212
Matrix fixture block 213,222 second dies 220
Second die cavity, 221 forming cavities 240
First plastic layer, 320 second plastic layers 330
Exiting surface coating portion 332 moulds 400,500
Injection orifice 410,510 forming cavities 420,520
By face forming part 521
Embodiment
For describing technology contents of the present utility model, structural attitude, the purpose that will reach and effect in detail, below described in detail especially exemplified by example and conjunction with figs..
See also Fig. 2, first embodiment of the invention comprises a lens matrix 110 and a plastic layer 120, plastic layer 120 comprises that an incidence surface coating portion 121, that coats lens matrix 110 incidence surfaces coats the exiting surface coating portion 122 of lens matrix 110 exiting surfaces and the periphery coating portion 123 of a coating lens matrix 110 peripheries, the circumferential surface of periphery coating portion 123 is made as benchmark by face 1231, and is provided with groove 1232 in lens periphery coating portion 123.
Make the invention described above compound lens 100 and can adopt the mould shown in Fig. 3, this mould comprises having on one first die 210 and one second die, 220, the first dies 210 to also have one on first die cavity, 211, the first die cavitys, the 211 chamber walls by face forming part 2111; Offer on the chamber wall of first die cavity 211 on the chamber wall of an injection orifice 212, the first die cavitys 211 and protruded out three matrix fixture blocks 213.Second die 220 is provided with second die cavity 221, has protruded out at least three matrix fixture blocks 222 on the chamber wall of this second die cavity 221.When making compound lens 100 with mould, matrix fixture block 213 behind the matched moulds, 222 fixed lens matrixes 110, first die cavity 211 and second die cavity 221 constitute a forming cavity 240, described lens matrix 110 is clamped between the matrix fixture block 222 of the matrix fixture block 213 of first die 210 and second die 220, and leave the chamber wall of first die cavity 211 and the chamber wall certain distance of second die cavity 221, inject transparent thermic by injection orifice 212 and solidify plastic material, fill up forming cavity 240 and coat all or part of lens matrix 110, heating this mould again makes this thermic solidify plastic material sclerosis formation plastic layer 120, separation first die 210 and second die 220 can obtain the compound lens that is coated with plastic layer 120 100 as shown in Figure 2 after finishing, wherein the matrix fixture block 213,222 corresponding positions on plastic layer 120 form a groove 1232 respectively, correspondingly on the plastic layer 120 form benchmark by face 1231 by face forming part 2111.
When the design use can penetrating ultraviolet light mould the time, thermic curing transparent plastic material can be changed to the transparent plastic material of ultraviolet light induced curing.
See also Fig. 4, second embodiment of compound lens 300 of the present invention comprises that a lens matrix 310 and first plastic layer 320 and second plastic layer, 330, the first plastic layers 320 coat the incidence surface of lens matrix 310; Second plastic layer 330 has an exiting surface coating portion 332 and that coats lens matrix 310 exiting surfaces and coats the periphery coating portion 331 of lens matrix 310 peripheries, and is formed with described benchmark on the periphery of this periphery coating portion 331 by face 3311.
See also Fig. 5 and Fig. 6, when making above-mentioned compound lens 300, can adopt mould 400 shown in Fig. 5 and mould 500 shown in Figure 6.Have a forming cavity 420 and an injection orifice 410 that is communicated with forming cavity 420 on this mould 400.Make the part of lens matrix 310 as mould 400, injection orifice from the mould 400 410 injects transparent plastic material then, and make transparent plastic material fill up the forming cavity 420 of mould 400, use UV-irradiation lens matrix 310 again, transparent plastic material so that sclerosis is injected forms first plastic layer 320.From mould 400, take out the lens matrix 310 that has first plastic layer 320 then, be fixed in again in the mould 500, the forming cavity 520 of mould 500 is provided with one by face forming part 521, inject transparent plastic materials and fill up the forming cavity 520 of mould 500 from the injection orifice 510 of mould 500, then to first plastic layer, 320 irradiating ultraviolet light, make the transparent plastic material sclerosis of injection, form bright dipping bread and cover portion 332, mold removal 500 can obtain compound lens 300 as shown in Figure 4 after finishing, and wherein corresponding face forming part 521 places of leaning on form benchmark by face 3311 on second plastic layer 330.
The plastic layer of compound lens of the present invention is not limited to coat fully lens matrix, also the demand exposed parts lens matrix of visual structure or manufacturing.Main incidence surface of this compound lens and exiting surface can be one or more combination of plane, sphere and Fresnel surface etc.Wherein, the benchmark of described periphery coating portion can be cylindrical by face.
In the manufacture method of compound lens of the present invention, transparent plastic material also can be chemosetting material, heating cure material etc.
Compound lens of the present invention, can the process of forming plastic cement layer directly generate benchmark by face, thereby can simplify manufacturing process, reduces cost and improve qualification rate when making compound lens by benchmark is arranged on the plastic layer by face on lens matrix.
Claims (9)
1. a compound lens comprises a lens matrix and at least one plastic layer, and lens matrix is made by glass material; Plastic layer is coated on the lens matrix, and plastic layer is made by transparent plastic material, it is characterized in that: at least one plastic layer is provided with benchmark by face.
2. compound lens as claimed in claim 1, it is characterized in that: the number of described plastic layer is one, this plastic layer has an incidence surface coating portion, that coats the lens matrix incidence surface and coats the exiting surface coating portion of lens matrix exiting surface and the periphery coating portion of a coating lens matrix periphery, the periphery of periphery coating portion is formed with described benchmark by face, offers at least one groove in the periphery coating portion.
3. compound lens as claimed in claim 1 is characterized in that: described plastic layer comprises first plastic layer and second plastic layer, and first plastic layer coats the incidence surface of lens matrix; Second plastic layer has an exiting surface coating portion and that coats the lens matrix exiting surface and coats the periphery coating portion of lens matrix periphery, and is formed with described benchmark on the periphery of this periphery coating portion by face.
4. as claim 2 or 3 described compound lenses, it is characterized in that: the benchmark of described periphery coating portion is cylindrical by face.
5. as claim 2 or 3 described compound lenses, it is characterized in that: the planform of described incidence surface, exiting surface can be plane or sphere.
6. the manufacture method of a compound lens is characterized in that comprising the steps:
(1) lens matrix is fixed in the forming cavity of mould, the chamber wall of this forming cavity has one by the face forming part, offers an injection orifice on the mould;
(2) in forming cavity, inject the transparent plastic material of flowable state by injection orifice, and transparent plastic material is solidify to form with lens matrix be attached to and have benchmark by the plastic layer of face;
(3) compound lens is taken out in die sinking.
7. the manufacture method of compound lens as claimed in claim 6, it is characterized in that: described mould comprises one first die and one second die; Offer one first die cavity on this first die, the chamber wall of this first die cavity has one by the face forming part, has protruded out at least one matrix fixture block on the chamber wall of first die cavity, offers described injection orifice on the chamber wall of first die cavity; Offer one second die cavity on this second die, protruded out at least one matrix fixture block on the chamber wall of second die cavity; Second die cavity is communicated with and forms described forming cavity with first die cavity; Described lens matrix is clamped between the matrix fixture block of the matrix fixture block of first die and second die, and leaves the chamber wall of first die cavity and the chamber wall certain distance of second die cavity.
8. the manufacture method of compound lens as claimed in claim 6, it is characterized in that: be pasted with an incidence surface coating portion on the described lens matrix, lens matrix is fixed on the mould by incidence surface coating portion and then is fixed in the forming cavity.
9. the manufacture method of compound lens as claimed in claim 6, it is characterized in that: described transparent plastic material is chemosetting material, heating cure material or ultraviolet light induced curing materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810179799A CN101750642A (en) | 2008-12-05 | 2008-12-05 | Compound lens and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810179799A CN101750642A (en) | 2008-12-05 | 2008-12-05 | Compound lens and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101750642A true CN101750642A (en) | 2010-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810179799A Pending CN101750642A (en) | 2008-12-05 | 2008-12-05 | Compound lens and manufacturing method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137511A (en) * | 2015-08-28 | 2015-12-09 | 深圳市百康光电有限公司 | Multi-material combination lens, manufacturing method thereof, and imaging device |
| CN106950619A (en) * | 2016-10-19 | 2017-07-14 | 佛山市中山大学研究院 | A kind of UVLED modules with compound lens structure and preparation method thereof |
| CN112946919A (en) * | 2021-04-22 | 2021-06-11 | 上海康耐特光学有限公司 | Laminating type functional resin lens and preparation method and application thereof |
| TWI801154B (en) * | 2022-02-25 | 2023-05-01 | 大立光電股份有限公司 | Imaging lens assembly, camera module and electronic device |
-
2008
- 2008-12-05 CN CN200810179799A patent/CN101750642A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137511A (en) * | 2015-08-28 | 2015-12-09 | 深圳市百康光电有限公司 | Multi-material combination lens, manufacturing method thereof, and imaging device |
| CN105137511B (en) * | 2015-08-28 | 2017-07-07 | 深圳市百康光电有限公司 | A kind of many combination of materials lens and its manufacture method and imaging device |
| CN106950619A (en) * | 2016-10-19 | 2017-07-14 | 佛山市中山大学研究院 | A kind of UVLED modules with compound lens structure and preparation method thereof |
| CN112946919A (en) * | 2021-04-22 | 2021-06-11 | 上海康耐特光学有限公司 | Laminating type functional resin lens and preparation method and application thereof |
| TWI801154B (en) * | 2022-02-25 | 2023-05-01 | 大立光電股份有限公司 | Imaging lens assembly, camera module and electronic device |
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Open date: 20100623 |