CN204740364U - Optical element and lighting device - Google Patents
Optical element and lighting device Download PDFInfo
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- CN204740364U CN204740364U CN201520458462.8U CN201520458462U CN204740364U CN 204740364 U CN204740364 U CN 204740364U CN 201520458462 U CN201520458462 U CN 201520458462U CN 204740364 U CN204740364 U CN 204740364U
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- 230000003287 optical effect Effects 0.000 title claims abstract description 83
- 239000000758 substrate Substances 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 230000000994 depressogenic effect Effects 0.000 claims description 2
- 235000009537 plain noodles Nutrition 0.000 abstract 3
- 240000003380 Passiflora rubra Species 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 9
- 238000005286 illumination Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 2
- 230000004313 glare Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- Optical Elements Other Than Lenses (AREA)
Abstract
The utility model provides an optical element, which comprises a substrate, the base plate has relative upper and lower surface and a pair of lateral wall, the upper surface of base plate is for going out the plain noodles, the upper surface is provided with a plurality of bellied first little constitutional unit, first little constitutional unit's bottom sets up the relative top in on the upper surface and bottom has a groove structure, the lower surface of base plate does optical element's income plain noodles, be provided with the little constitutional unit of a plurality of seconds down on the plain noodles, the little constitutional unit of a plurality of seconds from the lower surface to it is sunken in the base plate. The utility model also provides a lighting device. This kind of optical element who has two -sided micro -structure, little constitutional unit on the upper and lower surface through optical element mutually support the direction of propagation who changes light jointly and realize the batwing grading, make working face illuminance more even.
Description
Technical field
The utility model relates to a kind of optical element, especially a kind of optical element and lighting device with microstructure.
Background technology
When the brightness that the brightness ratio human eye of certain light source or object in visual field has adapted to is much bigger, people just has the sensation of dazzling the eyes, and this phenomenon is referred to as dazzle.Clear stipulaties is had to dazzle, homogeneity: in workroom or operation area, uniformity of illuminance should be not less than 0.7 in standard GB/T 50034-2004; Library, reading room, office space, medical clinic etc. site requirements type unified glare value UGR<19.
Market there is a lot of method controlling dazzle, as anti-dazzle circle conventional in Down lamp, Ceiling light, grid sheet in grid lamp disc etc., but wide-angle panel light fixture is difficult to control its luminous intensity distribution shape and glare index, the mode of what the low dazzle panel light of existing market upper part adopted is increase by one piece of prism plate controls dazzle, because the requirement of prism plate overall weight, thickness to consider etc. factor to the impact of optical efficiency, the restriction of production cost and cosmetic look, the gross thickness of prism plate is generally at 2-3mm, and the height tend of microstructure is less.Fig. 1 and Fig. 2 illustrates prism plate common on several market, and the prism plate of circular arc microstructure does not change distribution curve flux shape substantially; The prism plate of zigzag microstructure is also only narrowed within the specific limits by lambert's luminous intensity distribution, is difficult to realize batswing tab distribution curve flux to reach low dazzle, the uniform illuminating effect of illumination of working plane.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of uniform-illumination, the optical element with microstructure unit of low dazzle and adopt the lighting device of this optical element.
For achieving the above object, the utility model adopts following technical scheme.
A kind of optical element, comprise substrate, described substrate has relative upper and lower surface and pair of sidewalls, the upper surface of described substrate is exiting surface, described upper surface is provided with the first microstructure unit of multiple projection, the bottom of described first microstructure unit is arranged on the upper surface, the top relative with bottom has groove structure, the lower surface of described substrate is the incidence surface of described optical element, described lower surface is provided with multiple second microstructure unit, described multiple second microstructure unit from lower surface to substrate sunken inside.
Preferably, corresponding described first microstructure unit on described substrate height direction of the second microstructure unit described in each.
Preferably, described first microstructure unit is identical along the width of substrate transverse axis with described second microstructure unit.
Preferably, described first microstructure unit comprises the zone line of depression and is positioned at the fringe region of projection of described zone line, and zone line and fringe region seamlessly transit.
Preferably, in the cross section of described first microstructure unit, described zone line is formed as recessed para-curve or V-type or circular arc, and described fringe region forms convex para-curve or circular arc.
Preferably, in the cross section of the first microstructure unit, the arc radius that fringe region is formed is more than or equal to 0.3mm.
Preferably, described upper surface of base plate is less than 1/2nd of described substrate thickness to the height on the summit of described fringe region.
Preferably, in the cross section of described second microstructure unit, described depressed part is fractal is recessed para-curve or circular arc or reverse V-shaped.Aforesaid substrate is made up of acrylic or PC material.
Preferably, when the angle of incident ray and vertical direction is between 0 degree to 30 degree, incident ray is by after the first microstructure unit of described optical element and the second microstructure unit, and the angle of emergent ray and vertical direction is near 20 degree to 30 degree.
Preferably, when the angle of incident ray and vertical direction is between 60 degree to 90 degree, incident ray is by after the first microstructure unit of described optical element and described second microstructure unit, and the angle of emergent ray and vertical direction is near 40 degree to 60 degree.
The utility model also provides a kind of lighting device, it is characterized in that, comprises light source, above-described optical element, and the light that described light source sends is through described optical element uniform.Lighting device also comprises diffuser plate, and described optical element is adjacent with described diffuser plate.
Preferably, the lower surface laminating of described optical element is arranged on described diffuser plate.
Preferably, described diffuser plate comprises at least two exiting surfaces at an angle to each other, and described optical element is provided with at an angle to each other at least two regions corresponding with the exiting surface of described diffuser plate.
Beneficial effect: the utility model devises a kind of optical element with double-side micro structure, batswing tab luminous intensity distribution is realized by the microstructure unit of the upper and lower surface of the optical element direction of propagation jointly changing light that cooperatively interacts, can more effective reduction UGR value, achieve low dazzle, illumination of working plane evenly.
In lighting device, this optical element and diffuser plate are combined, be placed on above light source, microstructure unit is utilized to change light transmition direction to the reflection of light, refraction action, realize batswing tab luminous intensity distribution, and reach that illumination zone is wide, illumination of working plane is even, low dazzle UGR value, the illuminating effect of more than 110 ° wide-angle bright dippings can be reached.
According to below with reference to accompanying drawing to description of the present utility model, other targets of the present utility model and effectiveness will become apparent, and reader can fully understand the utility model.
Accompanying drawing explanation
Fig. 1 is the microstructure schematic diagram of prior art prism plate one
Fig. 2 is the microstructure schematic diagram of prior art prism plate two;
Fig. 3 is the schematic diagram of an embodiment of the utility model optical element;
Fig. 4 is the schematic diagram of the sectional view of the optical element meeting the utility model embodiment;
Fig. 5 is the direction of propagation schematic diagram of middle low-angle incident ray in the utility model optical element;
Fig. 6 is the direction of propagation schematic diagram of large angle incidence light in the utility model optical element;
Fig. 7 is the distribution curve flux of the utility model optical element;
Fig. 8 is the structural drawing of an embodiment of the utility model lighting device;
Fig. 9 is the structural drawing of another embodiment of the utility model lighting device.
Embodiment
About aforementioned and other technology contents, feature and effect of the present utility model, in the detailed description of the embodiment of following cooperation reference diagram, can clearly present.
Below in conjunction with Fig. 3 to Fig. 7, optical element of the present utility model is described.
A kind of optical element 10, comprise substrate 16, substrate 16 has relative upper and lower surperficial 14,15 and pair of sidewalls 17,18.The upper surface 14 of substrate is the exiting surface of optical element, on upper surface, interval arranges multiple first microstructure unit 12, first microstructure unit 12 is protruding from upper surface 14, the bottom 122 of the first microstructure unit arranges on an upper, and the top 121 of the projection of first microstructure unit relative with bottom has groove structure.It is the exiting surface of optical element that lower surface 15 interval of aforesaid substrate 16 arranges multiple second microstructure unit 13, second microstructure unit 13, the second microstructure unit from lower surface 15 to substrate 16 sunken inside.Therefore, first, second microstructure unit 12,13 on substrate 16 after arrangement is in short transverse, and namely in Fig. 3, Z-direction corresponds to each other, i.e. each second microstructure unit 13 corresponding first microstructure unit 12 in the short transverse of substrate.And along the length direction of substrate 16, i.e. Y direction, extending longitudinally.And each first, second microstructure unit 12,13 is along substrate 16 X direction, namely the distance of X-direction extension is suitable each other.First microstructure unit 12 can integrated molding with substrate 16.
Fig. 4 is the schematic diagram of the sectional view of the utility model optical element, and cross section is the cross section perpendicular to Y-axis in XYZ coordinate system in Fig. 3.With reference to Fig. 4, the first microstructure unit 12 comprises the zone line 1211 of depression and is positioned at the fringe region 1212,1213 of the adjacent projection in zone line both sides, seamlessly transits between zone line and fringe region.In the embodiment of Fig. 4, the shape of zone line 1211 is V-type curves, and in addition, the shape of zone line also can be recessed para-curve or circular arc.In Fig. 4, the cross section 1212,1213 of fringe region is circular arc, also can be convex para-curve.If the curve formed behind fringe region cross section is circular arc, then the radius of circular arc is more than or equal to 0.3mm.In order to meet the mould molding precision adding man-hour, the spacing on transitional region two summits that adjacent two the first microstructure units are contiguous, the distance namely between adjacent two the first microstructure units is more preferably greater than 2mm.
In Fig. 4, the first microstructure unit 12 is bilateral symmetry, symmetrical in the center line by described groove structure.Conveniently processing and accurate chain of command type error, the height H 1 of the first microstructure unit 12 controls within 1/3 of the overall wall thickness H of optical element 1, namely the upper surface 14 of substrate 16 arrives the summit of described fringe region 1212,1213, namely the height of circular arc summit R or para-curve summit R is less than 1/2nd of the thickness of described substrate 16, thus the height avoiding optical element 1 is too high makes material deformation, impact is known clearly the precision of optical element.
In addition, the width along substrate transverse axis X-axis of the first microstructure unit, the i.e. distance W1 on two summits of the first microstructure unit, equal with the width along substrate transverse axis X-axis of the second microstructure unit, namely equal with the distance W2 between the second microstructure unit and connect two nodes of base lower surface.
In addition, the overall wall thickness H of optical element 1 controls within 3mm, to reduce the overall weight of optical element 1 and to facilitate optical element 1 installation fixing.In order to obtain better optical effect, the transparent PMMA material of optical element 1 prioritizing selection is made, and takes second place and also can select transparent PC material.
Fig. 5 and Fig. 6 is the direction of propagation schematic diagram of incident ray in the utility model optical element 1, wherein the angle of incident ray refers to incident ray and vertical direction, namely with the angle of Z-direction, the such as light in 0 ° of-10 ° of direction refers to that the angle of the angle of incident ray and vertical direction is 0 °-10 °, namely as in Fig. 5 planimetric coordinates XZ, the angle of incident ray and longitudinal axis Z.
First microstructure unit 12 of optical element 1 can control the light in 0 °-10 ° and 55 °-70 ° of directions, by its deviation near 20 °-30 °, decreases central light strength, and adds the light intensity of 20 ° of-30 ° of left and right directions; First microstructure unit 12 also can the light in control angle 10 °-55 ° and angle 70 ° of-90 ° of directions, by its deviation to 40 ° of-60 ° of directions, thus angle light ratio near decreasing 10 ° and beyond 60 °.
The distribution curve flux of light after the first microstructure unit 12 of the upper surface 14 of optical element 1 is that the light intensity in 20 ° of-30 ° of directions is less in angle compared with standard batswing tab luminous intensity distribution, be that the light intensity in 40 ° of-60 ° of directions is stronger in angle, such distribution curve flux shape is larger improvement more existing than common distribution curve flux in homogeneity and dazzle UGR, in order to obtain better effect, optical element 1 is provided with multiple second microstructure unit 13 at lower surface 15.
With reference to Fig. 5, the incident ray of part A and vertical direction angle are between 10 °-30 °, namely angle incident ray in, after the second microstructure unit 13 of the lower surface 15 of optical element 1 near deviation to low-angle 0 °-7 °, reflect rear outgoing by the first microstructure unit 12 of upper surface 14 again, last emergent ray direction and the angle of vertical direction are greatly between 20 °-30 °.
In Fig. 5, the incident ray of part B and vertical direction angle are between 0 °-10 °, be called low-angle incident ray, after the second microstructure unit 13 of optical element lower surface, there is a small deviation, refracted ray is in vertical direction with about 7 ° of about-12 ° angles, rear outgoing is reflected again by the first microstructure unit 12 of the upper surface 14 of optical element 1, last emergent ray direction and the angle of vertical direction are near 20 °-30 °, deviation is no more than positive and negative 5 degree, for example, 10 degree of deviations are to 30 °, and the meeting deviation of 12 degree is to 33 degree.
In Fig. 6, the two-part incident ray of C, D respectively and vertical direction angle between 60 °-90 °, retrodeviating through the second microstructure unit 13 of lower surface 15 folds near 15 °-50 °, outgoing after the refraction, total reflection of the first microstructure unit 12 of upper surface 14 again, the angle of last emergent ray direction and vertical direction about 40 °-60 °.
Fig. 7 is the distribution curve flux of optical element of the present utility model.Because angle 10 °-30 ° direction light can focus within the scope of low-angle 0 °-10 ° by the second microstructure unit 13, the first microstructure unit 12 surface is incided through substrate inside, according to the effect of the first microstructure unit 12, the angle meeting deviation of this some light is to 20 ° of-30 ° of directions, so just the light ray energy in a part 40 ° of-60 ° of directions is deflected into 20 ° of-30 ° of directions, such distribution curve flux has more excellent effect in homogeneity and dazzle UGR.
Fig. 8 is the embodiment that the utility model adopts the lighting device of optical element 1.With reference to Fig. 8, lighting device comprises light source board 40, LED and is arranged on light source board 40, and light source board 40 is positioned in chassis 50, fits in light source board 40 lower surface and chassis 50.Lighting device also comprises diffuser plate 30 and above-mentioned optical element 10, and optical element 10 is arranged at above described diffuser plate 30, whom does incident ray enter optical element by diffuser plate 30 and refers to? do not define, by the outgoing of described optical element 10.In the present embodiment, the lower surface laminating of optical element 10 is arranged on described diffuser plate 30.Optical element 10 and diffuser plate 30 assembling are fixed on frame 20, and frame 20 is fixed together by screw or other modes with the sidewall on chassis 50.
When there is no above-mentioned optical element 10, when luminous flux is 3000lm, UGR=22, after adding the optical element 10 with double-side micro structure unit 12,13, achieve batswing tab luminous intensity distribution, control beam angle can control between 110 °-120 °, UGR<19(luminous flux 3000lm).Thus provide that a kind of illumination zone is wide, illumination of working plane is even, low dazzle, wide-angle lighting device.
Fig. 9 is another embodiment that the utility model adopts the lighting device of optical element 10.
In Fig. 9, the embodiment of lighting device compared with Fig. 8 is compared, change the shape of diffuser plate 30 and above-mentioned optical element 10, diffuser plate 30 is set to forming by least two exiting surfaces at an angle to each other, and optical element 10 is provided with at an angle to each other at least two regions corresponding with the exiting surface of described diffuser plate 30.In the present embodiment, the exiting surface of diffuser plate 30 divides three regions, is mutually certain angle (about 10 °), and in addition, diffuser plate 30 also can be comprise two exiting surfaces at an angle to each other, or the exiting surface that more than three at an angle to each other.Optical element 10 is also provided with at an angle to each other at least two regions corresponding with the exiting surface of diffuser plate 30.LED is arranged on light source board 40, and light source board 40 is positioned in chassis 50, fits in light source board 40 lower surface and chassis 50.Optical element 10 and diffuser plate 30 are placed in chassis 50, and are placed on above light source board 40, and optical element is fixed on frame 20, and frame 20 is fixed together by screw or other modes with the sidewall on chassis 50.
Adopt the lighting device after above-mentioned optical element 10, beam angle can be realized between 110 °-120 °, UGR<19(luminous flux 3000lm) and batswing tab luminous intensity distribution, thus provide that a kind of illumination zone is wide, illumination of working plane is even, low dazzle UGR value, the lighting device of more than 110 ° wide-angle bright dippings can be reached.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model discloses as above with preferred embodiment, but and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solutions of the utility model, according to any simple modification that technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (16)
1. an optical element (10), comprise substrate (16), described substrate has relative upper, lower surface (14, 15) and pair of sidewalls (17, 18), it is characterized in that, the upper surface (14) of described substrate (16) is exiting surface, described upper surface is provided with first microstructure unit (12) of multiple projection, the bottom (122) of described first microstructure unit is arranged on the upper surface, the top (121) relative with bottom (122) has groove structure, the incidence surface that the lower surface (15) of described substrate (16) is described optical element, described lower surface is provided with multiple second microstructure unit (13), described multiple second microstructure unit (13) from lower surface to described substrate (16) sunken inside.
2. optical element according to claim 1, is characterized in that, the second microstructure unit (13) described in each is corresponding described first microstructure unit (12) on described substrate height direction.
3. optical element according to claim 2, is characterized in that, described first microstructure unit is identical along the width of substrate transverse axis with described second microstructure unit.
4. optical element according to claim 2, it is characterized in that, described first microstructure unit (12) comprises the zone line (1211) of depression and is positioned at the fringe region (1212,1213) of projection of described zone line, and zone line and fringe region seamlessly transit.
5. optical element according to claim 4, it is characterized in that, in the cross section of described first microstructure unit (12), described zone line (121) is formed as recessed para-curve or V-type or circular arc, and described fringe region (122,123) forms convex para-curve or circular arc.
6. optical element according to claim 5, is characterized in that, in the cross section of described first microstructure unit (12), the arc radius that fringe region is formed is more than or equal to 0.3mm.
7. optical element according to claim 5, is characterized in that, described substrate (16) upper surface is less than 1/2nd of described substrate thickness to the height on the summit of described fringe region.
8. optical element according to claim 1, is characterized in that, in the cross section of described second microstructure unit, described depressed part is fractal is recessed para-curve or circular arc or reverse V-shaped.
9. optical element according to claim 1, is characterized in that, described substrate is made up of acrylic or PC material.
10. optical element according to claim 1, is characterized in that, described substrate and described first microstructure unit integrated molding.
11. optical elements according to claim 1, it is characterized in that, when the angle of incident ray and vertical direction is between 0 degree to 30 degree, incident ray is by after described first microstructure unit and the second microstructure unit, and the angle of emergent ray and vertical direction is near 20 degree to 30 degree.
12. optical elements according to claim 1, it is characterized in that, when the angle of incident ray and vertical direction is between 60 degree to 90 degree, incident ray is by after described first microstructure unit and described second microstructure unit, and the angle of emergent ray and vertical direction is near 40 degree to 60 degree.
13. 1 kinds of lighting devices, is characterized in that, comprise light source, according to the arbitrary described optical element of claim 1 to 12, the light that described light source sends is through described optical element uniform.
14. lighting devices according to claim 13, is characterized in that, also comprise diffuser plate, and described optical element is adjacent with described diffuser plate.
15. lighting devices according to claim 14, is characterized in that, the lower surface laminating of described optical element is arranged on described diffuser plate.
16. lighting devices according to claim 15, is characterized in that, described diffuser plate comprises at least two exiting surfaces at an angle to each other, and described optical element is provided with at an angle to each other at least two regions corresponding with the exiting surface of described diffuser plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520458462.8U CN204740364U (en) | 2015-06-30 | 2015-06-30 | Optical element and lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520458462.8U CN204740364U (en) | 2015-06-30 | 2015-06-30 | Optical element and lighting device |
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| Publication Number | Publication Date |
|---|---|
| CN204740364U true CN204740364U (en) | 2015-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520458462.8U Expired - Fee Related CN204740364U (en) | 2015-06-30 | 2015-06-30 | Optical element and lighting device |
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| Country | Link |
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| CN (1) | CN204740364U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068161A (en) * | 2015-06-30 | 2015-11-18 | 欧普照明股份有限公司 | Optical element and lighting device |
| WO2022100446A1 (en) * | 2020-11-10 | 2022-05-19 | 苏州欧普照明有限公司 | Optical device and illuminating lamp |
-
2015
- 2015-06-30 CN CN201520458462.8U patent/CN204740364U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068161A (en) * | 2015-06-30 | 2015-11-18 | 欧普照明股份有限公司 | Optical element and lighting device |
| WO2022100446A1 (en) * | 2020-11-10 | 2022-05-19 | 苏州欧普照明有限公司 | Optical device and illuminating lamp |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151104 |
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| CF01 | Termination of patent right due to non-payment of annual fee |