CN101592746B - Micro lens - Google Patents
Micro lens Download PDFInfo
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- CN101592746B CN101592746B CN200810108555A CN200810108555A CN101592746B CN 101592746 B CN101592746 B CN 101592746B CN 200810108555 A CN200810108555 A CN 200810108555A CN 200810108555 A CN200810108555 A CN 200810108555A CN 101592746 B CN101592746 B CN 101592746B
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- lenticule
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Abstract
The invention discloses a micro lens comprising a body and a concave-convex structure. The body is provided with a curved surface and can transmit light with a specific wavelength; the concave-convex structure is arranged on the curved surface and can transmit the light with the specific wavelength; the concave-convex structure is provided with a plurality of concave-convex units, and the distance between every two points in each concave-convex unit is less than the minimum value of the specific wavelength. The micro lens can be manufactured with simplified process and the cost of the material of the micro lens is lowered.
Description
Technical field
The present invention is relevant for lenticule, particularly relevant for a kind of lenticule with anti-reflection microstructure.
Background technology
Lenticule is usually used in solid state image sensing devices such as CMOS, CCD, in order to promote the utilization ratio of incident light.If yet do not do any processing at lens surface; Incident light can be because factors such as the difference of the refractive index between different medium and incident angles; The light of understanding some loses because of the phenomenon of total reflection; Except meeting reduced the sensitivity of solid state image sensing device, reflected light reflected through other object again and when being incident to solid state image sensing device once again, problems such as ghost can take place.
In order to address the above problem; Industry has been delivered various applications or plate the technology of anti-reflective film on lenticule; Though can obtain gratifying anti-reflection effect mostly; But on manufacturing process, need the equipment, material, manufacturing technology steps or the like of extra increase application, plated film and increase manufacturing cost, or in manufacturing process, cause the deterioration of the character of lenticule own on the contrary, or these films itself can bring new problem points such as hydroscopicity etc.
Summary of the invention
In view of this, embodiments of the invention provide a kind of lenticule, can solve the problem that above-mentioned prior art faces.
Embodiments of the invention provide a kind of lenticule, comprise: lens body, have curved surface, and the light with particular range of wavelengths is had light transmission; And concaveconvex structure is on above-mentioned curved surface; Light to having above-mentioned particular range of wavelengths has light transmission; Above-mentioned concaveconvex structure has the concavo-convex body in a plurality of unit, and the distance between any two points in the concavo-convex body in each unit is less than the minimum value of above-mentioned particular range of wavelengths.
Aforesaid lenticule; Wherein this concaveconvex structure is to the refractive index of light with this particular range of wavelengths, is between the medium of the incident end of the light with this particular range of wavelengths is to the refractive index of light with this particular range of wavelengths and this lens body refractive index to light with this particular range of wavelengths.
Aforesaid lenticule, the periodic arrangement of big or small identical and one-tenth of the concavo-convex body in wherein said a plurality of unit.
Aforesaid lenticule, wherein the material of this concaveconvex structure is epoxy resin, silicon dioxide, glue material, glass or plastic cement material.
Aforesaid lenticule, wherein this lens body is identical material with this concaveconvex structure.
Aforesaid lenticule, wherein this lens body and this concaveconvex structure are different material.
Aforesaid lenticule, the short transverse of the concavo-convex body in wherein said a plurality of unit is perpendicular to the tangential direction of this curved surface at its place.
Aforesaid lenticule, the sectional area perpendicular to this short transverse of the concavo-convex body in wherein said a plurality of unit is to change along this short transverse.
Aforesaid lenticule, the short transverse of the concavo-convex body in wherein said a plurality of unit is parallel to this lenticular optical axis.
Aforesaid lenticule, wherein this lenticule is as the receipts optical lens that is used for light emitting diode, cmos image sensor, solar cell.
Aforesaid lenticule, the distance of wherein every adjacent two concavo-convex bodies in unit is less than the minimum value of this particular range of wavelengths.
The present invention can the simplified manufacturing technique step and is saved material cost.
Description of drawings
Figure 1A is a sectional view, shows the lenticule and the application examples thereof of the preferred embodiment of the present invention.
Figure 1B is the amplification profile of the part curved surface 10a at concavo-convex body 21 in one of them unit shown in Figure 1A and place thereof.
Fig. 2 is a sectional view, shows the lenticular version shown in Figure 1A.
Fig. 3 is a sectional view, shows lenticular another version shown in Figure 1A.
Fig. 4 is a sectional view, shows the lenticular another version shown in Figure 1A.
Wherein, description of reference numerals is following:
10～lens body 10a～curved surface
15～lens body 15a～curved surface
The concavo-convex body in 20～concaveconvex structure, 21～unit
30～light transmission silica gel, 40～concaveconvex structure
The concavo-convex body 50～light in 41～unit
60～concaveconvex structure, 61～convex body
62～concavity body, 70～concaveconvex structure
The concavo-convex body 80～concaveconvex structure in 72～unit
The concavo-convex body 100～light-emitting diode chip for backlight unit in 81～unit
H～short transverse W～width
Embodiment
For let the present invention above-mentioned with other purposes, characteristic and advantage can be more obviously understandable, the hereinafter spy enumerates preferred embodiment, and cooperates appended accompanying drawing, elaborates as follows:
Please refer to Figure 1A, be sectional view, show the lenticule and the application examples thereof of the preferred embodiment of the present invention.
In Figure 1A, the lenticule of the preferred embodiment of the present invention is to comprise lens body 10 and concaveconvex structure 20, and in order to receive the light-emitting diode chip for backlight unit 100 of light 50 under it, light 50 has a particular range of wavelengths.In the present embodiment, this " particular range of wavelengths " is (391)～(775) nm; And in other embodiments, this " particular range of wavelengths " be those skilled in the art of the present invention when embodiment of the present invention, can be according to scope that its demand determined.
Figure 1B is the amplification profile that shows the part curved surface 10a at the concavo-convex body 21 in one of them unit and place thereof among Figure 1A.In the present embodiment, the maximal value of the distance between any two points of the concavo-convex body 21 in unit promptly is the cross-sectional width W shown in Figure 1A, Figure 1B, and promptly the width W of the concavo-convex body 21 in unit is the minimum value less than the wavelength coverage of light 50.In addition, the distance of two adjacent bump bodies 21 also is less than the minimum value of the wavelength coverage of light 50.
In addition; The refractive index of 20 pairs of light 50 of concaveconvex structure; Be preferably between the medium of the incident end of light 50 refractive index the refractive index of light 50 and 10 pairs of light 50 of lens body; Can help light 50 successfully to penetrate lens body 10, and help the effect of the penetrance of concaveconvex structure 20 its antireflections of performance, raising light 50 via concaveconvex structure 20.And in the present embodiment, the refractive index of 20 pairs of light 50 of concaveconvex structure is between the refractive index of air to the refractive index of light 50 and 10 pairs of light 50 of lens body.
In the embodiment shown in Figure 1A, Figure 1B, the concavo-convex body 21 in each unit of concaveconvex structure 20 is with respect to curved surface 10a and is protruding structure.Shown in Figure 1B, the short transverse H of the concavo-convex body 21 in unit is perpendicular to the tangential direction of the curved surface 10a at its place, and the shape of the concavo-convex body 21 in unit, is preferably its sectional area perpendicular to short transverse H is changed along short transverse H.Be preferably shown in Figure 1B highly higher sectional area A perpendicular to short transverse H
2Be less than highly lower sectional area A perpendicular to short transverse H
2, help concaveconvex structure 20 to bring into play the effect of the penetrance of its antireflections, raising light 50.In addition, in another embodiment, the short transverse H of the concavo-convex body 21 in unit is parallel to lenticular optical axis shown in Figure 1A.In the embodiment shown in Figure 1A, Figure 1B, the concavo-convex body 21 in unit is spherical protrusion; But in other embodiments, the concavo-convex body 21 in unit can also be taper, trapezoidal uniform cross section long-pending can be with height change, be preferably the protrusion that diminishes.
In Figure 1A, Figure 1B, the periodic arrangement of big or small identical and one-tenth of the concavo-convex body 21 in unit, and the cycle can be fixed value or on-fixed value; And in other embodiments, the size of the concavo-convex body 21 in each unit is can be fully different or incomplete same, looks demand and decides.
In addition, the material of concaveconvex structure 20 can be epoxy resin, silicon dioxide (silica), glue material (glue), glass (glass), plastic cement materials such as (plastic), and can have identical material or unlike material with lens body 10; Has identical material but be preferably concaveconvex structure 20 with lens body 10, with can simplified manufacturing technique and the use of material.
At the lenticular manufacture view shown in Figure 1A, preferred manufacturing process provides die in advance, and it has the lens body 10 shown in Figure 1A and the anti-phase figure of concaveconvex structure 20.Next, above-mentioned lenticule is shaped with the figure that one of material injects this die, hardens on demand again, step such as the demoulding, surfacing and become the lenticule shown in Figure 1A.Through above-mentioned manufacturing process; Can once form the concaveconvex structure with anti-reflection function 20 on lens body 10 and the curved surface 10a thereof; Can the simplified manufacturing technique step and save the cost of material aspect, thereby reduce the lenticular manufacturing cost of the preferred embodiment of the present invention.
In addition, can provide earlier to be applicable to the die of making lens body 10, inject above-mentioned lenticule with material after, the lens body 10 of harden on demand again, step such as the demoulding, surfacing and forming earlier not being had concaveconvex structure 20.Next, again via technology such as transfer printing, impressions, concaveconvex structure 20 is formed on the curved surface 10a of lens body 10.Through this manufacturing process, lens body 10 just can be identical material or unlike material with concaveconvex structure 20.
In addition, can form earlier as stated and not have after the lens body 10 of concaveconvex structure 20,, form the concavo-convex body 21 in unit at curved surface 10a again through technology such as dry ecthing (for example plasma etching), wet etchings.But pass through etching technique; The size and the arrangement position of the concavo-convex body 21 in more wayward unit; And the dry ecthing manufacturing process must be carried out under higher temperature, when forming lens body 10 like the material that reduces with thermotolerances such as organic materials, the doubt that its quality is changed is arranged.Former precision to concaveconvex structure 20 has strict demand and/or uses under the situation of the lower material of thermotolerance, does not then advise adopting etched manufacturing process to form concaveconvex structure 20.
In Figure 1A, light 50 again via light transmission silica gel 30, and arrives light-emitting diode chip for backlight unit 100 through after the lenticule of the preferred embodiment of the present invention, and promptly the lenticule of the preferred embodiment of the present invention is the receipts optical lens as light-emitting diode chip for backlight unit 100.In addition; If any there being the for example interface between the light transmission silica gel 30 shown in Figure 1A and the light-emitting diode chip for backlight unit 100 of antireflecting demand on other interfaces, can for example have the concaveconvex structure 40 of the concavo-convex body 41 in unit shown in Figure 1A at the anti-reflection structure that this interface forms similar concaveconvex structure 20.At this moment; The refractive index of 40 pairs of light 50 of concaveconvex structure; Likewise be preferably between the medium of the incident end of light 50 refractive index the refractive index of light 50 and 100 pairs of light 50 of light-emitting diode chip for backlight unit; Can help light 50 successfully via concaveconvex structure 40 through reaching light-emitting diode chip for backlight unit 100, and help 40 its antireflections of brightness of concaveconvex structure, improve the effect of the penetrance of light 50.And in the present embodiment, the refractive index of 40 pairs of light 50 of concaveconvex structure is between the refractive index of the refractive index of 30 pairs of light 50 of light transmission silica gel and 100 pairs of light 50 of light-emitting diode chip for backlight unit.
In Figure 1A illustrated embodiment, lenticule of the present invention is the receipts optical lens as light-emitting diode chip for backlight unit 100; And in other embodiments; Also can be through being similar to structure shown in Figure 1A or other appropriate configuration, be the receipts optical lens that installs image sensor, solar cell or other optics or the energy-collecting device of CMOS for example or other kinds as other with lenticule of the present invention.
In the embodiment shown in Figure 1A, Figure 1B, the concavo-convex body 21 in each unit of concaveconvex structure 20 is with respect to curved surface 10a and is protruding structure.And in other embodiment embodiment for example shown in Figure 2; Lenticule is on the curved surface 10a of lens body 10, to have wavy concaveconvex structure 60; Be convex body 61 and the concavity body 62 that concaveconvex structure 60 has continuously, interlocks, wherein the material of convex body 61 can be identical with the material of lens body 10 or different.And structure shown in Figure 2, the demand of looking also can be modified to after several convex bodies 61 of continuous arrangement, then arrange one or more concavity body 62 again, then arrange one or more convex bodies 61 again again; In addition, one of ordinary skill in the art of the present invention can comply with its demand, arrange convex body 61 and concavity body 62 arbitrarily.And about the optical property of the shape of convex body 61 and the preferred or suggestion of concavity body 62, size etc. and concaveconvex structure 60 etc., all identical or wait adopted in the unit shown in Figure 1A, Figure 1B concavo-convex body 21, and repeated description no longer.
In the embodiment shown in Figure 1A, Figure 1B, the concavo-convex body 21 in each unit of concaveconvex structure 20 is with respect to curved surface 10a and is protruding structure.And in another embodiment embodiment for example shown in Figure 3, be formed at the concaveconvex structure 70 on the curved surface 10a of lenticular lens body 10, be that having with respect to curved surface 10a is the recessed concavo-convex body 72 in unit.In addition, about the optical property of the shape of the preferred of the concavo-convex body 72 in unit or suggestion, size etc. and concaveconvex structure 70 etc., all identical or wait adopted in the unit shown in Figure 1A, Figure 1B concavo-convex body 21, and repeated description no longer.
In the embodiment shown in Figure 1A, Figure 1B, lenticule is a plano-convex lens; And lenticule in other embodiments also can be biconvex lens or concave-convex lens, and all visual demand of concaveconvex structure of Figure 1A, Fig. 2, various forms shown in Figure 3 is applied on the curved surface of biconvex lens and/or concave-convex lens.
In the embodiment shown in Figure 1A, Figure 1B, lenticule is a plano-convex lens; And the lenticule for example shown in Figure 4 of lenticule in other embodiments then is a plano-concave lens.Lenticule shown in Figure 4 is to comprise lens body 15 and concaveconvex structure 80, and lens body 15 has curved surface 15a, and concaveconvex structure 80 then is to be positioned on the curved surface 15a.Concaveconvex structure 80 has the concavo-convex body 81 in a plurality of unit.And the optical property of lens body 15 shown in Figure 4, concaveconvex structure 80 and material etc.; Also have the preferred of the concavo-convex body 81 in unit or the shape of advising, size etc.; All identical or equal the lens body 10 shown in Figure 1A, Figure 1B, concaveconvex structure 20, with the concavo-convex body 21 in unit, and repeated description no longer.
On the other hand, also visual its demand of one of ordinary skill in the art of the present invention is replaced into concaveconvex structure shown in Figure 4 80 as Fig. 2 or concaveconvex structure 60 or 70 shown in Figure 3.
In the embodiment shown in fig. 4, lenticule is a plano-concave lens; And lenticule in other embodiments also can be biconcave lens or meniscus, and the aforementioned all visual demand of concaveconvex structure that can be applicable to the various kenels among the embodiment shown in Figure 4 is applied on the curved surface of biconcave lens and/or meniscus.
Through the present invention, a kind of lenticule is provided, and can solves the problem that aforementioned prior art faces.
Though the present invention with preferred embodiment openly as above; Right its is not in order to limit the present invention; Any one of ordinary skill in the art of the present invention; Do not breaking away from the spirit and scope of the present invention, when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the scope that appending claims defines.
Claims (14)
1. lenticule comprises:
Lens body has curved surface, is that the light of 391～775nm has light transmission to wavelength coverage; And
Concaveconvex structure; On this curved surface; To wavelength coverage is that the light of 391～775nm has light transmission, and this concaveconvex structure has the concavo-convex body in a plurality of unit, and the concavo-convex body in said a plurality of unit is continuously, staggered convex body and concavity body; Distance between any two points in the concavo-convex body in each unit is less than 391nm, and the short transverse of the concavo-convex body in wherein said a plurality of unit is perpendicular to the tangential direction of this curved surface at its place.
2. lenticule as claimed in claim 1; Wherein this concaveconvex structure is the refractive index of the light of 391～775nm to wavelength coverage, is to be that the medium of incident end of the light of 391～775nm is between the refractive index of refractive index and the light that this lens body is 391～775nm of light of 391～775nm to wavelength coverage to wavelength coverage between wavelength coverage.
3. lenticule as claimed in claim 1, the periodic arrangement of big or small identical and one-tenth of the concavo-convex body in wherein said a plurality of unit.
4. lenticule as claimed in claim 1, wherein the material of this concaveconvex structure is an epoxy resin.
5. lenticule as claimed in claim 1, wherein the material of this concaveconvex structure is a silicon dioxide.
6. lenticule as claimed in claim 1, wherein the material of this concaveconvex structure is the glue material.
7. lenticule as claimed in claim 1, wherein the material of this concaveconvex structure is a glass.
8. lenticule as claimed in claim 1, wherein the material of this concaveconvex structure is the plastic cement material.
9. lenticule as claimed in claim 1, wherein this lens body is identical material with this concaveconvex structure.
10. lenticule as claimed in claim 1, wherein this lens body and this concaveconvex structure are different material.
11. lenticule as claimed in claim 1, the sectional area perpendicular to this short transverse of the concavo-convex body in wherein said a plurality of unit is to change along this short transverse.
12. lenticule as claimed in claim 1, the short transverse of the concavo-convex body in wherein said a plurality of unit is parallel to this lenticular optical axis.
13. lenticule as claimed in claim 1, wherein this lenticule is as the receipts optical lens that is used for light emitting diode, cmos image sensor, solar cell.
14. lenticule as claimed in claim 3, wherein the distance of every adjacent two concavo-convex bodies in unit is less than 391nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810108555A CN101592746B (en) | 2008-05-27 | 2008-05-27 | Micro lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810108555A CN101592746B (en) | 2008-05-27 | 2008-05-27 | Micro lens |
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| Publication Number | Publication Date |
|---|---|
| CN101592746A CN101592746A (en) | 2009-12-02 |
| CN101592746B true CN101592746B (en) | 2012-10-10 |
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| CN200810108555A Active CN101592746B (en) | 2008-05-27 | 2008-05-27 | Micro lens |
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| CN (1) | CN101592746B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6074521B2 (en) | 2013-08-01 | 2017-02-01 | エルジー・ケム・リミテッド | Alignment film for liquid crystal lens and mold for forming the same |
| CN111766649A (en) * | 2019-03-30 | 2020-10-13 | 华为技术有限公司 | Optical element, camera module, terminal and processing method of optical element |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1637522A (en) * | 2003-12-29 | 2005-07-13 | Lg.菲利浦Lcd株式会社 | Back light structure of liquid crystal display device |
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- 2008-05-27 CN CN200810108555A patent/CN101592746B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1637522A (en) * | 2003-12-29 | 2005-07-13 | Lg.菲利浦Lcd株式会社 | Back light structure of liquid crystal display device |
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| CN101592746A (en) | 2009-12-02 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: OMNIVISION TECH INC |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20111026 Address after: Hsinchu City, Taiwan, China Applicant after: Caiyu Science-Technology Co., Ltd. Co-applicant after: Omnivision Technologies, Inc. Address before: Hsinchu City, Taiwan, China Applicant before: Caiyu Science-Technology Co., Ltd. |
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