CN109613639B - Bidirectional asymmetric grating sheet and lighting system - Google Patents
Bidirectional asymmetric grating sheet and lighting system Download PDFInfo
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- CN109613639B CN109613639B CN201811640666.8A CN201811640666A CN109613639B CN 109613639 B CN109613639 B CN 109613639B CN 201811640666 A CN201811640666 A CN 201811640666A CN 109613639 B CN109613639 B CN 109613639B
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 13
- 238000005286 illumination Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 13
- 230000004313 glare Effects 0.000 abstract description 8
- 230000003287 optical effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1866—Transmission gratings characterised by their structure, e.g. step profile, contours of substrate or grooves, pitch variations, materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/08—Refractors for light sources producing an asymmetric light distribution
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention discloses a bidirectional asymmetric grating sheet and a lighting system, wherein the bidirectional asymmetric grating sheet comprises a body and a grain layer, the grain layer is positioned on one side of the body, a plurality of grain structures with fixed shapes are symmetrically arranged on the grain layer, so that the cross section of the grain layer from C0 degrees to C180 degrees is provided with symmetrical wavy grains, and the cross section of the grain layer from C90 degrees to C270 degrees is provided with asymmetrical sawtooth grains. The grating sheet adopts a symmetrical wavy line design in the direction of C0-C180 degrees, symmetrically diffuses light rays towards two ends, adopts an asymmetrical sawtooth line design in the direction of C90-C270 degrees, and diffuses light rays towards one direction, thereby realizing good light interception effect, solving the glare problem of the conventional landscape lamp and being widely applied to the field of optical elements.
Description
Technical Field
The invention relates to the field of optical elements, in particular to a bidirectional asymmetric grating sheet and an illumination system.
Background
Along with the acceleration expansion of outdoor landscape quantization engineering, the light distribution requirements on different types of lamps are more and more novel and more strict. The lighting effect and the glare control become particularly important technical requirements in the lighting of landscape lamps. For the illumination of occasions such as bridge deck, residential building, park landscape, etc., when the illumination scope exceeds the required size of working face, obvious glare can be produced to surrounding pedestrians or residents, and light pollution is formed. Therefore, the lamp has certain requirements for light interception performance. The conventional landscape lamp adopts a plane lens with a reflection principle to realize light distribution requirements, the lens has a plurality of angle types, and can meet the illumination requirements of most working surfaces, but the lens is usually poor in light interception performance, the light spot edge is not clear, and a large amount of stray light is usually overflowed when an object working surface is illuminated, so that glare is caused. For some special occasions, high-uniformity illumination is difficult to achieve by a single conventional lens.
Noun interpretation:
grating sheet: an optical device in which a grating sheet is formed of a large number of parallel slits of equal width and equal pitch is called grating (grating). The grating is made by cutting a large number of parallel scores on a glass sheet, the scores are opaque parts, and a smooth part between the two scores can transmit light, which is equivalent to a slit.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide a grating sheet capable of intercepting light.
It is a further object of the invention to provide a lighting system capable of intercepting light.
The technical scheme adopted by the invention is as follows:
the utility model provides a two-way asymmetric grating piece, includes body and line layer, line layer is located one side of body line layer is last the symmetry be equipped with the fixed line structure of a plurality of shapes, so that on the C0-C180 cross section of line layer be symmetrical wave line, and on the C90-C270 cross section of line layer be asymmetric sawtooth line.
Further, on the cross section of C0-C180 degrees of the grain layer, the curve path of each grain structure meets a first formula, and the first formula is as follows:
Y1＝0.0029x 2 -0.0403x+40.04
wherein Y1 represents the ordinate, and the value range of x is more than or equal to 0 and less than or equal to 1.
Further, on the cross section of C0-C180 degrees of the grain layer, the center-to-center distance between two connected grain structures is 0.5-1.5 mm.
Further, the center-to-center distance between two connected grain structures is 1mm.
Further, on the cross section of C90° -C270° of the textured layer, the curved path of each textured structure satisfies a second formula, where the second formula is:
Y2＝-0.0002x 3 +0.0032x 2 -0.0092x+39.907
wherein Y2 represents the ordinate, and x is more than or equal to 0.4 and less than or equal to 1.
Further, on the cross section of C90-C270 DEG of the grain layer, the center-to-center distance between two connected grain structures is 0.2-1 mm.
Further, the center-to-center distance between two connected grain structures is 0.6mm.
Further, the grain structure protrudes 0.05-0.15 mm above the grain layer.
Further, the grain structure protrudes 0.1mm above the grain layer.
The invention adopts another technical scheme that:
an illumination system comprises a light source and a grating sheet, wherein the grating sheet adopts the bidirectional asymmetric grating sheet.
The beneficial effects of the invention are as follows: the grating sheet adopts a symmetrical wavy line design in the direction of C0-C180 degrees, symmetrically diffuses light rays towards two ends, adopts an asymmetrical sawtooth line design in the direction of C90-C270 degrees, and diffuses light rays towards one direction, thereby realizing good light interception effect and solving the glare problem of the conventional landscape lamp.
Drawings
FIG. 1 is a schematic diagram of a bi-directional asymmetric grating sheet according to the present invention;
FIG. 2 is a schematic structural diagram of a C0-C180 cross-section of a grating sheet;
FIG. 3 is a schematic diagram of a C90° -C270° cross-sectional structure of a grating sheet;
FIG. 4 is a schematic diagram of a first formula and corresponding curve path;
FIG. 5 is a schematic diagram of a second formula and corresponding curve path;
FIG. 6 is a light spot diagram of the original light beam emitted by the first embodiment of the present invention;
fig. 7 is a light spot diagram of light emitted from a grating sheet according to a first embodiment of the present invention.
Detailed Description
Example 1
As shown in fig. 1-3, a bidirectional asymmetric grating sheet comprises a body 2 and a grain layer 3, wherein the grain layer 3 is positioned on one side of the body 2, and a plurality of grain structures 1 with fixed shapes are symmetrically arranged on the grain layer 3, so that the cross section of the grain layer 3 from C0 degrees to C180 degrees is a symmetrical wave grain, and the cross section of the grain layer 3 from C90 degrees to C270 degrees is an asymmetric saw tooth grain.
The grating sheet of the embodiment can be used for distributing light directly emitted by the LED light source, and can also be used for distributing light for the third time after passing through the lens, and the original light spot angle is changed, so that the light spot connection is more uniform in the lighting use process, the light waste in the lighting direction is avoided, and the grating sheet has a certain anti-dazzle effect and is suitable for lighting occasions such as landscape lamps, guardrail lamps and the like. The grating sheet of this embodiment adopts an asymmetric structural design, as shown in fig. 1, in this embodiment, the cross section defined from top to bottom on the grating sheet is a C90-C270 ° cross section, and the cross section from left to right is a C0-C180 ° cross section. On the cross section of C0-C180 degrees, as shown in FIG. 2, the light is symmetrically diffused towards the two ends by adopting a symmetrical wavy design; on the cross section of C90-C270 DEG, as shown in figure 3, an asymmetric sawtooth grain design is adopted to diffuse light in one direction, thereby realizing the light interception effect. The grating sheet adopts a bidirectional asymmetric grain design to realize the optical effect of large-angle symmetric diffusion in the direction of C0-C180 degrees and small-angle asymmetric diffusion in the direction of C90-C270 degrees, thereby realizing the uniform connection of the illumination of the lamp. And a certain light interception performance can be realized at the light-less part in the direction of C90-C270 degrees, so that the comfort level of illumination is improved, and the glare problem of the conventional landscape lamp is also solved.
Wherein, symmetrical wave line and asymmetric sawtooth line are realized through line structure 1, and the symmetry covers on line layer 3 has line structure to make line layer 3 present symmetrical wave line and asymmetric sawtooth line last time and pass through line structure 1.
Referring to fig. 2 and 4, further as a preferred embodiment, on a C0 ° -C180 ° cross section of the textured layer 3, the curved path of each of the textured structures 1 satisfies a first formula:
Y1＝0.0029x 2 -0.0403x+40.04
wherein Y1 represents the ordinate, and the value range of x is more than or equal to 0 and less than or equal to 1.
The circuit diameter of the cross section of the single grain structure 1 at C0-C180 degrees meets a first formula, a plurality of grain structures 1 are connected with one another to form symmetrical wave grains, and the wave grains can diffuse light spots with narrow angles within 3 degrees to more than 30 degrees in a two-way manner and diffuse light rays towards two ends symmetrically.
Further as a preferred embodiment, on the cross section of the grain layer 3 from C0 ° to C180 °, the center-to-center distance between two connected grain structures 1 is 0.5 to 1.5mm.
When the interval between the two grain structures is too large or too small, the refraction of light is not facilitated, when the interval between the two grain structures is smaller than 0.5mm, the interval is too small, the manufacturing is difficult in the process, and when the interval between the two grain structures is larger than 1.5mm, the refraction requirement cannot be met.
Further as a preferred embodiment, the center-to-center distance between two connected grain structures 1 is 1mm.
When the center-to-center distance between the two grain structures is 1mm, the light refraction effect is best.
Referring to fig. 3 and 5, further as a preferred embodiment, on a C90 ° -C270 ° cross section of the textured layer 3, the curved path of each of the textured structures 1 satisfies a second formula:
Y2＝-0.0002x 3 +0.0032x 2 -0.0092x+39.907
wherein Y2 represents the ordinate, and x is more than or equal to 0.4 and less than or equal to 1.
The circuit path of the single grain structure 1 at the cross section of C90-C270 degrees meets a second formula, a plurality of grain structures 1 are connected with each other to form asymmetric sawtooth grains, the sawtooth grains can diffuse narrow-angle light spots in 3 degrees to more than 10 degrees in one direction, the light spots are not diffused in the other direction, and a good light interception effect is formed in the direction of the light spots which are not diffused, so that the lamp has a certain anti-dazzle function.
Further as a preferred embodiment, on the cross section of the grain layer 3 from C90 ° to C270 °, the center-to-center distance between two connected grain structures 1 is 0.2 to 1mm.
When the interval between the two grain structures is too large or too small, the refraction of light is not facilitated, when the interval between the two grain structures is smaller than 0.2mm, the interval is too small, the manufacturing is difficult in the process, and when the interval between the two grain structures is larger than 1mm, the refraction requirement cannot be met.
Further as a preferred embodiment, the center-to-center distance between two connected grain structures 1 is 0.6mm.
When the center-to-center distance between the two grain structures is 0.6mm, the light refraction effect is best.
Further as a preferred embodiment, the grain structure 1 protrudes 0.05-0.15 mm above the grain layer 3.
When the distance of the protruding grating sheet of the grain structure 1 is too long, the protruding grating sheet is easy to damage, and if the protruding distance is insufficient, the light is difficult to refract.
Further as a preferred embodiment, the texture 1 protrudes 0.1mm above the texture layer 3.
When the distance between the protruding grating sheets of the grain structure 1 is 0.1mm, the refraction effect of the grain structure is best.
The grating sheet adopts a symmetrical wavy line design in the direction of C0-C180 degrees to symmetrically diffuse light to two ends, and adopts an asymmetrical sawtooth line design in the direction of C90-C270 degrees to diffuse light to one direction, so that a good light interception effect is realized, and the glare problem of a conventional landscape lamp is solved. By the bidirectional asymmetric grating sheet, the light spots can be diffused, and referring to fig. 6 and 7, fig. 6 is an original emergent light spot, and fig. 7 is a light spot after the grating sheet is added for light distribution, it can be seen that the light spot size is increased from 30mm to 110mm in the direction of C0-C180 degrees. The spot size increases from 30mm to 70mm in the direction of C90-C270. The design of the curvature of the surface of the grating is according to the Snell's law n 1 sini 1 ＝n 2 sini 2 The incidence angle of the light is adjusted so as to realize light deflection of different degrees, and then the unidirectional diffusion light spots of different degrees are obtained.
The specific effects of the bidirectional asymmetric grating sheet are as follows:
1. the bidirectional asymmetric grain design is adopted, so that the problem of a dark area for connecting the lighting of the lamp is solved, a good light interception effect is realized, and the problem of glare of a conventional landscape lamp is solved.
2. The grating sheet has a wider bidirectional adjustable range, can realize the light spot diffusion effect of different degrees, and has more flexible angle control compared with the conventional landscape lamp.
Example two
An illumination system comprising a light source and a grating sheet employing a bi-directional asymmetric grating sheet as described in embodiment one.
The lighting system of the embodiment has any technical characteristic combination of the two-way asymmetric grating sheet in the first embodiment of the invention, and has the corresponding function and beneficial effect of the first embodiment.
While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are included in the scope of the present invention as defined in the appended claims.
Claims (8)
1. The bidirectional asymmetric grating sheet is characterized by comprising a body and a grain layer, wherein the grain layer is positioned on one side of the body, and a plurality of grain structures with fixed shapes are symmetrically arranged on the grain layer, so that the cross section of the grain layer from C0 degrees to C180 degrees is provided with symmetrical wavy grains, and the cross section of the grain layer from C90 degrees to C270 degrees is provided with asymmetric sawtooth grains;
on a cross section of C0-C180 degrees of the grain layer, the curve path of each grain structure meets a first formula, wherein the first formula is as follows:
Y1＝0.0029x 2 -0.0403x+40.04
wherein Y1 represents an ordinate, and the value range of x is more than or equal to 0 and less than or equal to 1;
on the cross section of C90-C270 degrees of the grain layer, the curve path of each grain structure meets a second formula, and the second formula is as follows:
Y2＝-0.0002x 3 +0.0032x 2 -0.0092x+39.907
wherein Y2 represents the ordinate, and x is more than or equal to 0.4 and less than or equal to 1.
2. A bi-directional asymmetric grating sheet as recited in claim 1, wherein the center-to-center spacing between two adjacent textured structures is between 0.5mm and 1.5mm across the textured layer at a cross section of between C0 ° and C180 °.
3. A bi-directional asymmetric grating sheet as claimed in claim 2, wherein the center-to-center spacing between two of said structures connected is 1mm.
4. A bi-directional asymmetric grating sheet as recited in claim 1, wherein the center-to-center spacing between two adjacent textured structures is between 0.2mm and 1mm across the textured layer at a C90-C270 cross section.
5. A bi-directional asymmetric grating sheet as recited in claim 4, wherein the center-to-center spacing between two of said structures connected is 0.6mm.
6. A bi-directional asymmetric grating sheet as recited in claim 1, wherein said textured structure protrudes 0.05-0.15 mm above the textured layer.
7. The bi-directional asymmetric grating sheet of claim 6, wherein the texture protrudes 0.1mm above the texture layer.
8. An illumination system comprising a light source and a grating sheet, said grating sheet employing a bi-directional asymmetric grating sheet according to one of claims 1-7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811640666.8A CN109613639B (en) | 2018-12-29 | 2018-12-29 | Bidirectional asymmetric grating sheet and lighting system |
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|---|---|---|---|
| CN201811640666.8A CN109613639B (en) | 2018-12-29 | 2018-12-29 | Bidirectional asymmetric grating sheet and lighting system |
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| CN109613639A CN109613639A (en) | 2019-04-12 |
| CN109613639B true CN109613639B (en) | 2023-12-26 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB531868A (en) * | 1939-08-04 | 1941-01-13 | Thomas Willett Rolph | Improvements in and relating to luminairs |
| FR2482701A1 (en) * | 1980-05-14 | 1981-11-20 | Ksh Inc | Lens for high intensity lamp - has dropped square pyramid with triangular lower panels and vertical side walls |
| US6201910B1 (en) * | 1998-04-10 | 2001-03-13 | Otc-Optical Technologies Center S.R.L. | Fibre bragg grating with offset equivalent mirror plane and method for its manufacture |
| CN201803164U (en) * | 2010-08-20 | 2011-04-20 | 奉化市国盛仪表有限公司 | Novel grille lamp |
| CN202065903U (en) * | 2010-12-27 | 2011-12-07 | 和欣开发股份有限公司 | Light distribution grating plate with configuration of non-concentric saw-toothed gratings |
| CN105465646A (en) * | 2016-01-14 | 2016-04-06 | 浙江晶日照明科技有限公司 | LED optics structure capable of achieving conversion between round light spots and square light spots |
| JP2016090946A (en) * | 2014-11-10 | 2016-05-23 | 大日本印刷株式会社 | Optical member, method for manufacturing optical member, method for manufacturing original plate for forming adhesion preventive layer, surface light source device, image source unit, and liquid crystal display device |
| CN209460444U (en) * | 2018-12-29 | 2019-10-01 | 广东优尼克智能照明科技有限公司 | A kind of two-way asymmetrical beam grid and lighting system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4537822B2 (en) * | 2004-10-14 | 2010-09-08 | スタンレー電気株式会社 | Lamp |
-
2018
- 2018-12-29 CN CN201811640666.8A patent/CN109613639B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB531868A (en) * | 1939-08-04 | 1941-01-13 | Thomas Willett Rolph | Improvements in and relating to luminairs |
| FR2482701A1 (en) * | 1980-05-14 | 1981-11-20 | Ksh Inc | Lens for high intensity lamp - has dropped square pyramid with triangular lower panels and vertical side walls |
| US6201910B1 (en) * | 1998-04-10 | 2001-03-13 | Otc-Optical Technologies Center S.R.L. | Fibre bragg grating with offset equivalent mirror plane and method for its manufacture |
| CN201803164U (en) * | 2010-08-20 | 2011-04-20 | 奉化市国盛仪表有限公司 | Novel grille lamp |
| CN202065903U (en) * | 2010-12-27 | 2011-12-07 | 和欣开发股份有限公司 | Light distribution grating plate with configuration of non-concentric saw-toothed gratings |
| JP2016090946A (en) * | 2014-11-10 | 2016-05-23 | 大日本印刷株式会社 | Optical member, method for manufacturing optical member, method for manufacturing original plate for forming adhesion preventive layer, surface light source device, image source unit, and liquid crystal display device |
| CN105465646A (en) * | 2016-01-14 | 2016-04-06 | 浙江晶日照明科技有限公司 | LED optics structure capable of achieving conversion between round light spots and square light spots |
| CN209460444U (en) * | 2018-12-29 | 2019-10-01 | 广东优尼克智能照明科技有限公司 | A kind of two-way asymmetrical beam grid and lighting system |
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