CN101206337A - Optical thin film of back light module group - Google Patents
Optical thin film of back light module group Download PDFInfo
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- CN101206337A CN101206337A CNA200610170004XA CN200610170004A CN101206337A CN 101206337 A CN101206337 A CN 101206337A CN A200610170004X A CNA200610170004X A CN A200610170004XA CN 200610170004 A CN200610170004 A CN 200610170004A CN 101206337 A CN101206337 A CN 101206337A
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Abstract
An optical thin film of backlight module comprises a basal plate and a prism sheet. The prism sheet is arranged on one side of the basal plate and comprises a plurality of prism patterns in periodic arrangement. The prism patterns respectively have a plurality of triangular prisms, wherein, a round angle is formed between at least two adjacent triangular prisms. The present invention can reduce residual glue of roller wheels.
Description
Technical field
The present invention relates to a kind of optical thin film, particularly relate to a kind of optical thin film of module backlight.
Background technology
In recent years, because the development of display technique, traditional cathode ray display device is replaced by flat display apparatus gradually, usually, flat display apparatus can be electric plasma display device or liquid crystal indicator, and be applied to the electronic product of numerous species, for example notebook computer, TV and desktop screen or the like.Wherein, liquid crystal indicator is low with its power consumption, thermal value is few, in light weight and non-radiation type or the like advantage, has been used in the electronic product miscellaneous, and has become the main flow of flat display apparatus gradually.
Generally speaking, liquid crystal indicator mainly comprises a liquid crystal panel (Liquid Crystal Panel) and a module backlight (Backlight Module).Wherein, liquid crystal panel mainly has two glass substrates and and is located in liquid crystal layer between two glass substrates; And module backlight can will be distributed to the surface of liquid crystal panel equably from the light of a light source.Traditionally, module backlight with cathode fluorescent tube (ColdCathode Fluorescent Lamp, CCFL) or light-emittingdiode (Light Emitting Diode LED) is used as light source.
Please refer to Fig. 1, it is a diagrammatic cross-section of the module backlight 1 of prior art, module backlight 1 with a side-light type (Edge Type) among Fig. 1 is an example, and module 1 backlight mainly comprises at least one light source 11, a light guide plate 12, a reflecting plate 13, a diffusion sheet 14 and a prismatic lens 15.
As shown in Figure 2, it is an enlarged diagram of prismatic lens 15 among Fig. 1.Prismatic lens 15 of the prior art has comprised a bottom surface 151 and a structural plane (Structural Surface) 152 relative with the bottom surface.And on structural plane 152, constituted by most the isosceles prisms 153 that are arranged in parallel, form a vee-cut (V-shaped groove) 154 between each isosceles prism 153, the shape that is to say groove is not a fillet, and the height of each isosceles prism 153 is identical.
Because the prism pattern on the structural plane 152 utilizes roller (Roller) as mould, form through ultraviolet curing again behind embossing (Embossing) processing procedure in carrying out on the light binding.Wherein, when roller separates with light binding, because the size of prism 153 is quite careful, even reach micron-sized processing procedure precision, therefore, roller more easily has the residual phenomenon of colloid to take place corresponding to the place of vee-cut 154, not only influences the precision of following process processing procedure easily, also easily reduces the life-span of roller.
Therefore, how providing a kind of optical thin film of module backlight, to solve roller problems such as cull are arranged easily, is an important topic in fact.
Summary of the invention
Because above-mentioned problem, purpose of the present invention is for providing a kind of optical thin film that can reduce the module backlight of roller cull.
The object of the invention to solve the technical problems realizes by the following technical solutions.The optical thin film of a kind of module backlight that proposes according to the present invention, comprise: a prismatic lens, the prism pattern that comprises most periodic arrangement, these prism pattern have most triangular prisms respectively, at least wherein are formed with a fillet between two adjacent triangular prisms.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The optical thin film of aforesaid module backlight, it more comprises:
One substrate, prismatic lens are arranged at a side of this substrate, and the thickness of this substrate is between 30 μ m to 250 μ m.
The optical thin film of aforesaid module backlight, wherein said triangular prism has a drift angle, and this drift angle is spent to 120 degree between 75.
The optical thin film of aforesaid module backlight, wherein said each prism pattern has one-period length, and this Cycle Length is between 15 μ m to 300 μ m.
The optical thin film of aforesaid module backlight, the radius-of-curvature of wherein said fillet is less than 0.75 times Cycle Length.
The optical thin film of aforesaid module backlight, the quantity of wherein said triangular prism are 2n or 2n+1, and wherein n is a natural number.
The optical thin film of aforesaid module backlight, wherein said each prism pattern has one-period length, and this Cycle Length is greater than 0 μ m and less than 120 μ m.
The optical thin film of aforesaid module backlight, wherein said triangular prism comprise one first prism and one second prism, form fillet between this first prism and this second prism.
The optical thin film of aforesaid module backlight, wherein said first prism have one first height, and second prism has one second height, and this first height and this second is highly respectively less than 0.5 times Cycle Length.
The optical thin film of aforesaid module backlight, wherein said each prism pattern has one-period length, and this Cycle Length is between 15 μ m to 300 μ m.
The optical thin film of aforesaid module backlight, wherein said triangular prism comprise one first prism, one second prism and a prism, form fillet between this first prism and this second prism.
The optical thin film of aforesaid module backlight, wherein said first prism has one first height, second prism has one second height, and prism has one the 3rd height, and this first height, this second height and the 3rd are highly respectively less than 0.5 times Cycle Length.
The optical thin film of aforesaid module backlight, wherein said triangular prism pattern comprise one first prism, one second prism, a prism and one the 4th prism, form fillet between first prism and second prism or between second prism and this prism.
The optical thin film of aforesaid module backlight, wherein said first prism has one first height, second prism has one second height, prism has one the 3rd height, the 4th prism has one the 4th height, and this first height, this second height, the 3rd height and the 4th are highly all less than 0.5 times Cycle Length.
The optical thin film of aforesaid module backlight has a trench or fillet between wherein said two adjacent prisms, the height of this trench or this fillet less than these adjacent two prism heights and 0.6 times.
By technique scheme, the optical thin film of the present invention's module backlight has following advantage at least:
In the optical thin film of the present invention's module backlight, at least wherein be formed with a fillet between two adjacent triangular prisms.Compared with prior art, the optical thin film of module backlight of the present invention is owing to have fillet, helps separating of roller and prism pattern in processing procedure, and can avoid the generation of cull.Moreover, be positioned at the regularity that two fillets between adjacent triangular prism more can destroy prism pattern, avoid on liquid crystal panel, producing striped.In addition, inequality by the height of each triangular prism, more can avoid when the assembling liquid-crystal apparatus, optical thin film is subjected to external force and makes the problem of the whole disintegrations of drift angle produce.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is a synoptic diagram of prior art module backlight;
Fig. 2 is a synoptic diagram of the prismatic lens of prior art;
Fig. 3 is the synoptic diagram of optical thin film of the module backlight of first embodiment of the invention;
Fig. 4 is in the optical thin film of module backlight of first embodiment of the invention, an enlarged diagram of its prism pattern;
Fig. 5 is in the first embodiment of the invention, forms the optical path simulation synoptic diagram of fillet between first prism and one second prism;
Fig. 6 is a light beam visual angle figure of optical thin film of the prior art;
Fig. 7 is in the first embodiment of the invention, if first height and second the light beam visual angle figure of optical thin film during highly all greater than 0.5 times Cycle Length;
Fig. 8 is in the first embodiment of the invention, if the radius-of-curvature of the fillet light beam visual angle figure during greater than 0.75 times Cycle Length;
Fig. 9 is in the optical thin film of module backlight of second embodiment of the invention, an enlarged diagram of its prism pattern;
Figure 10 is in the optical thin film of module backlight of third embodiment of the invention, an enlarged diagram of its prism pattern;
Figure 11 is in the optical thin film of module backlight of fourth embodiment of the invention, an enlarged diagram of its prism pattern;
Figure 12 is a light beam visual angle figure of the optical thin film in the fourth embodiment of the invention; And
Figure 13 is in the optical thin film of module backlight of fifth embodiment of the invention, an enlarged diagram of its prism pattern.
1: module 11 backlight: light source
12: light guide plate 121: printing net-point
122: exiting surface 13: reflecting plate
14: diffusion sheet 15: prismatic lens
151: bottom surface 152: structural plane
153: isosceles prism 154:V shape groove
2: optical thin film 3: substrate
4: prismatic lens 41: prism pattern
411: triangular prism 411a: first prism
411b: the second prism 411c: prism
411d: the 4th prism 412: fillet
A, b, c, d: drift angle D: Cycle Length
H1: 2: the second height of first height H
H3: 4: the four height of the 3rd height H
H5: minimum altitude H6, H7: highly
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, its embodiment of optical thin film, structure, feature and the effect thereof of the module backlight that foundation the present invention is proposed, describe in detail as after.
At first, please refer to the optical thin film of Fig. 3 to Fig. 6 with explanation first embodiment of the present invention module backlight.
First embodiment
As shown in Figure 3, the optical thin film 2 of module backlight comprises a substrate 3 and a prismatic lens 4.Wherein, the material of substrate 3 can be polyethylene terephthalate (Poly (ethylene terephthalate), PET), thickness can be according to the actual design demand between 30 μ m to 250 μ m.
Prismatic lens 4 is arranged at a side of substrate 3, and prismatic lens 4 can utilize roller (Roller) as mould, after carrying out embossing (Embossing) processing procedure behind the coating light binding on the substrate 3, forms through ultraviolet curing.Certainly, the manufacture method of prismatic lens 4 is not limited to this, also can utilize roller to impress on the mould with light binding, is attached on the substrate 3 after the curing again.
Please be simultaneously with reference to Fig. 3 and Fig. 4, wherein, and Fig. 4 is an enlarged diagram of a prism pattern 41 wherein among Fig. 3.Prismatic lens 4 comprises the prism pattern 41 of most periodic arrangement, that is to say, each prism pattern 41 repeats to be parallel on the substrate 3, wherein, each prism pattern 41 can have one-period length D, Cycle Length D is between 15 μ m to 300 μ m, and the big I of triangular prism 411 is differing from each other or identical.
In addition, each prism pattern 41 has most triangular prisms 411 respectively, and the Cycle Length D of prism pattern 41 is less than 120 μ m, and the Cycle Length D of present embodiment is an example with 80 μ m.Wherein, the quantity of these triangular prisms 411 is 2n or 2n+1, and wherein n is a natural number.In the present embodiment, be 2n with the quantity of triangular prism 411, and n equals 1 and be example, these triangular prisms 411 have one first prism 411a and one second prism 411b, formation fillet 412 between the first prism 411a and the second prism 411b.By the formation of fillet between prism, can make prismatic lens 4 when making, reduce the cull on the roller, and prolong the life-span of roller.
Please refer to shown in Figure 5ly, it is the optical path simulation synoptic diagram of the prism pattern 41 of Fig. 4.Wherein, between the first prism 411a and the second prism 411b, form fillet 412, except reducing the cull on the roller and prolonging the life-span of roller, more can be by the arc design of fillet 412, avoid because periodic prism pattern 41 rule and on liquid crystal panel, produce the problem of striped (Moir é) too, and then can promote the quality of module backlight.After can finding out among the figure that partly light is incident to fillet, light is partly worn and is penetrated then prism pattern 41, and another light partly is then in the reflected back prism pattern 41.
Please refer to Fig. 4 again, the first prism 411a and the second prism 411b have a drift angle a respectively, b, respectively between 75 degree to 120 degree, and two drift angle a, the distance between the b is about 20 μ m.These drift angles a, b can equate or be inequality, and these drift angles a in the present embodiment, b equate and are 90 degree, wherein, when drift angle is identical, can have preferable Beam Control ability for prism pattern.And, the first prism 411a has one first height H 1, the second prism 411b has one second height H 2, first height H 1 can be identical or inequality with second height H 2, in the present embodiment, with first height H 1 and second height H 2 identical (being 30 μ m) and be example less than 0.5 times Cycle Length D respectively.This is because find through experimental result, if the height of prism during greater than 0.5 times Cycle Length D, can cause prism to descend for the control ability of light beam.
Fig. 6 is the light beam visual angle figure of prismatic lens 15 of the prior art, has the prism pattern of most isosceles right triangles on its prismatic lens, and wherein, transverse axis is represented the visual angle, and the longitudinal axis is represented brightness (the whenever upright radian of W/sr, watt).If Fig. 7 then is in the present embodiment first height H 1 and the second height H 2 light beam visual angle figure during all greater than 0.5 times Cycle Length D, find relatively, if the height of each triangular prism is during greater than 0.5 times Cycle Length D, center brightness (being that the visual angle is 0 brightness when spending) have only existing structure half less than, so the height of each triangular prism should be less than 0.5 times Cycle Length D.
In addition, in the present embodiment, the radius-of-curvature of fillet 412 needs the Cycle Length D less than 0.75 times.If the radius-of-curvature of fillet 412 is during greater than 0.75 times Cycle Length D, then the prismatic lens 4 in the optical thin film 2 then can variation for the ability of Beam Control, causes center brightness acutely to descend.
Fig. 8 is the light beam visual angle figure of the optical thin film 2 of the first embodiment of the present invention, if the radius-of-curvature of the fillet 412 light beam visual angle figure during greater than 0.75 times Cycle Length D.Compare with the prismatic lens of Fig. 6 prior art, when the radius-of-curvature of fillet 412 during greater than 0.75 times Cycle Length D, center brightness can violently descend, and has only 84% of prior art center brightness approximately, so the radius-of-curvature of fillet 412 should be less than 0.75 times Cycle Length D.
Second embodiment
Please refer to Fig. 9, in the present embodiment, the places different with first embodiment mainly are, the triangular prism 411 quantity differences that each prism pattern 41 is had.At this, with 2n+1 triangular prism, and n to equal 1 situation be example, meaning is that to have three triangular prisms be example to prism pattern 41.Prism pattern 41 has one first prism 411a, one second prism 411b and a prism 411c among the figure, wherein, forms fillet 412 between the first prism 411a and the second prism 411b.Certainly, also can between the second prism 411b and prism 411c, form fillet 412 simultaneously.
In addition, the size of the prism pattern 41 of present embodiment is also different with first embodiment, at this, the Cycle Length D of prism pattern 41 is 100 μ m, the first prism 411a has one first height H 1 (20 μ m), the second prism 411b has one second height H 2 (30 μ m) and a prism 411c has one the 3rd height H 3 (20 μ m), and first height H 1, second height H 2 and the 3rd height H 3 are respectively less than 0.5 times Cycle Length D.Because the height of each triangular prism is inequality, if higher triangular prism (for example second prism 411b) is when module backlight and liquid crystal panel assembling, be subjected to external force pressure to cause the drift angle disintegration of higher triangular prism to destroy, other two lower prisms (first prism 411a and prism 411c) directing light is normally then still arranged.Thus, not only can avoid the prism vertex angle of optical thin film destroyed comprehensively, more help to reduce the generation of striped (Moir é).
As shown in Figure 9, the width of the first prism 411a and the width of prism 411c are about 30 μ m about equally, but second prism 411b broad then is about 40 μ m.Distance between drift angle a and the drift angle b equals the distance between drift angle b and the drift angle c, is about 30 μ m.
The 3rd embodiment
Please refer to Figure 10, in the present embodiment, the places different with first embodiment and second embodiment mainly are, the triangular prism 411 quantity differences that each prism pattern 41 is had.At this, with 2n triangular prism, and n to equal 2 situation be example, meaning is that to have four triangular prisms be example to prism pattern 41.Prism pattern 41 has one first prism 411a, one second prism 411b, a prism 411c and one the 4th prism 411d among the figure, wherein, forms fillet 412 between the second prism 411b and prism 411c.Position and on-fixed that fillet 412 forms can certainly form fillet 412 between the first prism 411a and the second prism 411b or between prism 411c and the 4th prism 411d.
In addition, the size of prism pattern 41 is also different with aforementioned these embodiment, and at this, the Cycle Length D of prism pattern 41 is an example with 140 μ m.Fillet 412 has a minimum altitude H5, is about 20 μ m, and each prism pattern 41 to show the direction of the minimum altitude of fillet 412 greatly be axis of symmetry.Wherein, the first prism 411a has one first height H 1, the second prism 411b and has one second height H 2, a prism 411c has one the 3rd height H 3 and one the 4th prism 411d has one the 4th height H 4, wherein, the height of first height H 1, second height H 2, the 3rd height H 3 and the 4th height H 4 equates to be 30 μ m, and respectively less than 0.5 times Cycle Length D.
Moreover, have a trench or fillet between wantonly two adjacent two prisms, wherein, the height of trench or this fillet is less than 0.6 times of these adjacent two prisms.For instance, have a trench 413 between the first prism 411a and the second prism 411b, trench 413 have a height H 6 (being about 20 μ m) less than the first prism 411a and second prism 411b height and 0.6 times.
The 4th embodiment
As shown in figure 11, in the present embodiment, prism pattern 41 is an example to have one first prism 411a, one second prism 411b, a prism 411c and one the 4th prism 411d still, wherein, forms fillet 412 between the second prism 411b and prism 411c.The place different with the 3rd embodiment is in the prism pattern 41, first height H 1 of the first prism 411a and the 4th height H 4 of the 4th prism 411d are respectively less than second height H 2 of the second prism 411b and the 3rd height H 3 of prism 411c, and first height H 1 equals the 4th height H 4; Second height H 2 equals the 3rd height H 3.
In addition, the minimum altitude H5 of fillet 412; Trench 413 between the first prism 411b and the second prism 411c has a height H 6; Trench 414 between prism 411c and the 4th prism 411d has a height H 7.Wherein, height H 5, H6 and H7 should be at least greater than 1 μ m, and just being unlikely to can the integrally-built intensity of influence.
Then please refer to shown in Figure 12ly, it is the light beam visual angle figure of the optical thin film of the fourth embodiment of the present invention.In order to reduce cull and to avoid fringe phenomena to produce, and in two adjacent triangular prisms, form fillet, though compare with light beam visual angle figure (Fig. 6) of prior art, the optical thin film of present embodiment has been sacrificed center angle partly, but still reaching 94% of prior art center brightness, the volume production of also having had is worth.
The 5th embodiment
Please refer to Figure 13, the disclosed prism pattern 41 of present embodiment is an example to have one first prism 411a, one second prism 411b, a prism 411c and one the 4th prism 411d still.Be mainly that with the 4th embodiment difference height and the width of the first prism 411a and the 4th prism 411d are all inequality.Wherein, the width of the first prism 411a is 21 μ m, and height H 1 is 15 μ m; The width of the 4th prism 411d is 16 μ m, and height H 4 is 10 μ m.
In addition, the width of the second prism 411b and prism 411c is also inequality, and the width of the second prism 411b is 29 μ m; The width of prism 411c then is 34 μ m.
Certainly, except the foregoing description, in the optical thin film of the present invention's module backlight, the quantity of the triangular prism in each prism pattern is not defined as 2～4, as long as meet 2n or 2n+1, wherein n is that natural number gets final product.
In sum, in the optical thin film of the present invention's module backlight, at least wherein be formed with a fillet between two adjacent triangular prisms.Compared with prior art, the optical thin film of module backlight of the present invention is owing to have fillet, helps separating of roller and prism pattern in processing procedure, and can avoid the generation of cull.Moreover, be positioned at the regularity that two fillets between adjacent triangular prism more can destroy prism pattern, avoid on liquid crystal panel, producing striped.In addition, inequality by the height of each triangular prism, more can avoid when the assembling liquid-crystal apparatus, optical thin film is subjected to external force and makes the problem of the whole disintegrations of drift angle produce.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (15)
1. the optical thin film of a module backlight is characterized in that, comprising:
One prismatic lens comprises the prism pattern of most periodic arrangement, and these prism pattern have most triangular prisms respectively, at least wherein are formed with a fillet between two adjacent triangular prisms.
2. the optical thin film of module backlight according to claim 1 is characterized in that, more comprises:
One substrate, prismatic lens are arranged at a side of this substrate, and the thickness of this substrate is between 30 μ m to 250 μ m.
3. the optical thin film of module backlight according to claim 1 is characterized in that wherein said triangular prism has a drift angle, and this drift angle is spent to 120 degree between 75.
4. the optical thin film of module backlight according to claim 1 is characterized in that wherein said each prism pattern has one-period length, and this Cycle Length is between 15 μ m to 300 μ m.
5. the optical thin film of module backlight according to claim 4, the radius-of-curvature that it is characterized in that wherein said fillet is less than 0.75 times Cycle Length.
6. the optical thin film of module backlight according to claim 1, the quantity that it is characterized in that wherein said triangular prism are 2n or 2n+1, and wherein n is a natural number.
7. the optical thin film of module backlight according to claim 1 is characterized in that wherein said each prism pattern has one-period length, and this Cycle Length is greater than 0 μ m and less than 120 μ m.
8. the optical thin film of module backlight according to claim 7 is characterized in that wherein said triangular prism comprises one first prism and one second prism, forms fillet between this first prism and this second prism.
9. the optical thin film of module backlight according to claim 8 is characterized in that wherein said first prism has one first height, and second prism has one second height, and this first height and this second is highly respectively less than 0.5 times Cycle Length.
10. the optical thin film of module backlight according to claim 1 is characterized in that wherein said each prism pattern has one-period length, and this Cycle Length is between 15 μ m to 300 μ m.
11. the optical thin film of module backlight according to claim 10 is characterized in that wherein said triangular prism comprises one first prism, one second prism and a prism, forms fillet between this first prism and this second prism.
12. the optical thin film of module backlight according to claim 11, it is characterized in that wherein said first prism has one first height, second prism has one second height, prism has one the 3rd height, and this first height, this second height and the 3rd are highly respectively less than 0.5 times Cycle Length.
13. the optical thin film of module backlight according to claim 10, it is characterized in that wherein said triangular prism pattern comprises one first prism, one second prism, a prism and one the 4th prism, forms fillet between first prism and second prism or between second prism and this prism.
14. the optical thin film of module backlight according to claim 13, it is characterized in that wherein said first prism has one first height, second prism has one second height, prism has one the 3rd height, the 4th prism has one the 4th height, and this first height, this second height, the 3rd height and the 4th are highly all less than 0.5 times Cycle Length.
15. the optical thin film of module backlight according to claim 1 is characterized in that having a trench or fillet between wherein said two adjacent prisms, the height of this trench or this fillet less than these adjacent two prism heights and 0.6 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610170004XA CN101206337A (en) | 2006-12-22 | 2006-12-22 | Optical thin film of back light module group |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610170004XA CN101206337A (en) | 2006-12-22 | 2006-12-22 | Optical thin film of back light module group |
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| CN101206337A true CN101206337A (en) | 2008-06-25 |
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| CNA200610170004XA Pending CN101206337A (en) | 2006-12-22 | 2006-12-22 | Optical thin film of back light module group |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482501A (en) * | 2014-12-29 | 2015-04-01 | 欧普照明股份有限公司 | Optical element, optical module and lighting device |
| CN105068161A (en) * | 2015-06-30 | 2015-11-18 | 欧普照明股份有限公司 | Optical element and lighting device |
| CN108916822A (en) * | 2018-07-09 | 2018-11-30 | 上海彩丞新材料科技有限公司 | A kind of Film Optics lens, design method and lighting device with micro-structure |
-
2006
- 2006-12-22 CN CNA200610170004XA patent/CN101206337A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482501A (en) * | 2014-12-29 | 2015-04-01 | 欧普照明股份有限公司 | Optical element, optical module and lighting device |
| CN104482501B (en) * | 2014-12-29 | 2023-09-19 | 欧普照明股份有限公司 | Optical element, optical module and lighting device |
| CN105068161A (en) * | 2015-06-30 | 2015-11-18 | 欧普照明股份有限公司 | Optical element and lighting device |
| CN108916822A (en) * | 2018-07-09 | 2018-11-30 | 上海彩丞新材料科技有限公司 | A kind of Film Optics lens, design method and lighting device with micro-structure |
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Open date: 20080625 |