CN102943993A - Lens designing method of rectangular irradiation light spot - Google Patents
Lens designing method of rectangular irradiation light spot Download PDFInfo
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- CN102943993A CN102943993A CN2012104838822A CN201210483882A CN102943993A CN 102943993 A CN102943993 A CN 102943993A CN 2012104838822 A CN2012104838822 A CN 2012104838822A CN 201210483882 A CN201210483882 A CN 201210483882A CN 102943993 A CN102943993 A CN 102943993A
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Abstract
The invention discloses a lens designing method of a rectangular irradiation light spot. Firstly, the rectangular light spot is equally divided into a plurality of elongated small rectangular areas, one long edge of each small rectangular area in the same direction is respectively selected, a plane passing through the long edge and a light source is used as an incident plane, on the incident plane, a luminous area of the light source, which is located on one side of an optical axis, is divided into a plurality of small angles with the distribution rule of luminous angles according to luminous intensity, luminous fluxes of lights distributed in small angles are enabled to be equal, the long edge on each incident plane is divided into a plurality of small sections which are in one to one correspondence with the small angles, each feature point of a first surface and a second surface of the lens on each incident plane is sequentially obtained according to a refraction law, the feature points are connected to form two latticed structures respectively, and the two latticed structures are respectively connected by two smooth curved surfaces to form a lens shape. The lens designing method of the rectangular irradiation light spot has the advantages of being simple and visual, and the rectangular irradiation light spot is capable of being flexibly designed according to actual accuracy requirements.
Description
Technical field
The present invention relates to a kind of method for designing of optical element, more particularly, relate to the lens design method that a kind of face to be illuminated is rectangular light spot.
Background technology
When LED is used for the engineering illumination, often according to different use occasions or customer requirement, designs different lens and carry out luminous intensity distribution.In some use occasions, such as underground garage, in square and the road lighting, usually do not wish to use too many light fixture.If when adopting face to be illuminated to be the light spot shape such as circular, oval, in the situation that do not increase light fixture quantity, at the joining place of adjacent light fixture, dark space and irradiation blind spot will certainly appear, thereby use is caused very large inconvenience, also be difficult to reach client's instructions for use.Therefore, in a lot of use occasions, the suitable rectangle irradiation hot spot that adopts.And it is rectangular how to realize shining hot spot, then is the problem that needs at present solution.
Summary of the invention
The present invention provides a kind of lens design method of rectangle irradiation hot spot for solving the technical problem that exists in the above-mentioned prior art, and the method is simple, directly perceived, and the installation site of light source is not limited.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of lens design method of rectangle irradiation hot spot, light source optical axis is perpendicular to plane, hot spot place, and design procedure is as follows:
A), rectangular light spot is divided into a plurality of rectangular little rectangles along long limit or broadside, get respectively unidirectional one long limit of each little rectangle, and respectively take the plane on light source and each long limit of being got as the plane of incidence, on each plane of incidence, the light-emitting zone that light source is positioned at a side of optical axis is divided into a plurality of little angles according to luminous intensity with the regularity of distribution of lighting angle, and the luminous flux that is distributed in the light in each little angle is equated;
B), the long limit of the little rectangle on described each plane of incidence is divided into a plurality of segments, described segment is corresponding one by one with described little angle, and the length of adjusting each segment is inversely proportional to itself and the light source square distance of illuminated point to this segment, is directly proportional with illumination; Shone segment with edge segment in the described segment as initial, take marginal point as initial illuminated point, a namely corresponding described little angle, leave the required distance of light source according to the lens first surface, get a bit as the point of the initiation feature on the lens first surface at the incident ray corresponding with initial illuminated point, at this some place, the straight line that is parallel to light source and initial illuminated point line forms an angle with incident ray, initial deflection of light for lens, according to predetermined ratio, described deflection angle is divided into the first deflection angle and the second deflection angle, the angle separated time as incident ray through the fringence behind the lens first surfaces, by the law of refraction and the little angle of described correspondence, obtain the Second Characteristic point adjacent with initiation feature point, the second illuminated point that this Second Characteristic point is corresponding adjacent with initial illuminated point according to above-mentioned identical step, is obtained the position of each characteristic point on the corresponding first surface of each illuminated point successively; On through the fringence behind the initiation feature point on the described first surface, to ask for a bit as the initiation feature point on second on the lens according to lens thickness, adopt and the similar method of characteristic point of trying to achieve on the first surface, try to achieve the position of each characteristic point on second;
C), each characteristic point of the first surface on above-mentioned all planes of incidence of trying to achieve successively and each characteristic point of second are linked to be respectively two fenestral fabrics, again described fenestral fabric is coupled together with two level and smooth curved surfaces respectively, namely consist of the first surface of lens and second, and the joint face between the first surface of lens and second is non-logical light face, its shape can design according to the concrete installation requirement of lens, thereby consists of the global shape of lens.
Described optical axis is through the center of rectangular light spot.
The center of described optical axis deviation rectangular light spot.
Technical solution of the present invention is applicable to the point light source light-emitting system, and the optical axis of spot light can perpendicular to face to be illuminated, also can form any angle with face to be illuminated.Rectangle on face to be illuminated irradiation hot spot is divided into a plurality of rectangular little rectangles, by trying to achieve the position of each characteristic point of lens on the corresponding plane of incidence of each little rectangle, each characteristic point is linked to be fenestral fabric, again described two fenestral fabrics are coupled together with two level and smooth curved surfaces respectively, consist of the logical light face shape of lens.The population size at the little angle of dividing on the quantity of the little rectangle of dividing and each plane of incidence can affect the precision of lens and hot spot close to the precision of standard rectangular.When the quantity at the little rectangle of dividing and little angle abundant, thereby the quantity of the characteristic point of determining is enough greatly the time, the fenestral fabric that each characteristic point is formed by connecting is just closer to level and smooth curved surface, and at this moment, the precision of the lens shape of formation and the rectangular light spot of irradiation is then higher.When light source optical axis process spot center, the lens that obtain are symmetric lens; When light source optical axis departed from the rectangular light spot center, the lens that obtain were asymmetric polarizing lens, and these lens are fit to the use occasion of road lighting.
Description of drawings
Below by accompanying drawing method for designing of the present invention is done detailed description:
Fig. 1 is the method for designing schematic diagram to the rectangular light spot zoning;
Fig. 2 is the method schematic diagram of dividing little angle at the corresponding plane of incidence in little rectangular area;
Fig. 3 is the method schematic diagram of dividing segment in the length of side of little rectangle;
Fig. 4 is the method for designing schematic diagram of determining each characteristic point of lens on the plane of incidence;
Fig. 5 is the schematic diagram one that each characteristic point is connected into fenestral fabric;
Fig. 6 is the schematic diagram two that each characteristic point is connected into fenestral fabric;
Fig. 7 is a lens arrangement schematic diagram that obtains with the inventive method.
The specific embodiment
As shown in Figure 1, at first, rectangular light spot is divided into a plurality of little rectangular areas along broadside, is respectively I, II, III, IV ..., its long limit is respectively 11 and 22,22 and 33,33 and 44 ...
As shown in Figure 2, take little rectangle I as initial, the plane of crossing an one long limit 11 and light source 3 is first plane of incidence.On this plane of incidence, the light-emitting zone that light source 3 is positioned at a side of optical axis L is divided into four little angle α 1, α 2, α 3 according to luminous intensity with the regularity of distribution of lighting angle, and α 4, and the luminous flux that is distributed in the light in each little angle is equated.
Shown in Figure 3, the long limit 11 that will be positioned on first plane of incidence is divided into four segment ab, bc, cd, de.With α 1, α 2 respectively, and α 3, and α 4 is corresponding one by one.Adjust the length of each segment, make itself and light source 3 to this segment illuminated point apart from square being inversely proportional to of r, and be directly proportional with the illumination E of desired illuminated point.
As shown in Figure 4, shone segment with the ab section as initial, take a point as initial illuminated point, then the little angle of this ab section correspondence is α 1.Leave the required distance of light source 3 according to lens first surface 1, get 1 1a at the incident ray corresponding with a point, as the point of the initiation feature on the lens first surface 1, at this characteristic point place, the straight line that is parallel to the line of light source 3 and illuminated point a forms an angle β 1 with incident ray, and this angle is the initial deflection of light of lens.According to predefined ratio, this deflection angle β 1 is divided into two parts, the first deflection angle β 11 and the second deflection angle β 12, the present embodiment is got β 11: β 12=1:1, and the angle separated time through the fringence behind the initiation feature point 1a of first surface 1, passes through the law of refraction as incident ray, determine the normal n1 that 1a is ordered, straight line and described plane of light incidence perpendicular to normal n1 form an intersection, and the intersection point of the arm of angle of this intersection and little angle α 1 is respectively 1a and 1b, and the 1b point is namely as the Second Characteristic point.Second by according on the segment bc, getting b point is the second illuminated point, then b point correspondence this Second Characteristic point 1b.According to the method for above-mentioned definite Second Characteristic point 1b, try to achieve successively characteristic point 1c, 1d, 1e on illuminated point c, d, the corresponding first surface 1 of e.
Requirement according to lens thickness, getting the initiation feature point of 1 2a on as second 2 through the fringence behind the initiation feature point 1a on the first surface 1, with the incident ray of this fringence as second 2 on lens, second 2 the fringence take the straight line of the line that is parallel to illuminated point a and light source at this 2a point as lens, this incident ray and fringence direction are two arm of angle directions of illustrated the second deflection angle β 12, pass through the law of refraction, determine the normal that 2a is ordered, straight line and described plane of light incidence perpendicular to normal form an intersection, the refracted ray at the Second Characteristic point 1b place on this intersection and the first surface 1 is given the 2b point mutually, and the 2b point is namely as the Second Characteristic point on the secondth 2.According to said method, try to achieve successively characteristic point 2c, the 2d on second 2, the position of 2e.
Previous embodiment all is that to get marginal point a be initial illuminated point, determines one by one the position of each characteristic point.Certainly, can another marginal point e be initial illuminated point also, the corresponding incident ray of this e is the light along optical axis direction, then from the initiation feature point 1e of correspondence, determines one by one each characteristic point position.
Again take the plane of the long limit 22 by little rectangle II and light source 3 as second plane of incidence, the light-emitting zone that adopts as hereinbefore method light source 3 to be positioned at a side of optical axis L is divided into four little angles according to luminous intensity with the regularity of distribution of lighting angle, and makes the luminous flux that is distributed in the light each little angle in equal.To be positioned at long limit 22 on second plane of incidence is divided into and four little angles, four segments one to one.Adopt method as hereinbefore, try to achieve each characteristic point of the first surface of lens on second plane of incidence and each characteristic point of second.By that analogy, take the plane of the long limit 33 by little rectangle III and light source 3 as the 3rd plane of incidence, the light-emitting zone that adopts as hereinbefore method light source 3 to be positioned at a side of optical axis L is divided into four little angles according to luminous intensity with the regularity of distribution of lighting angle, and makes the luminous flux that is distributed in the light each little angle in equal.To be positioned at long limit 33 on the 3rd plane of incidence is divided into and four little angles, four segments one to one.Adopt method as hereinbefore, try to achieve lens each characteristic point on the 3rd plane of incidence and each characteristic point of second.If the little rectangle that is divided into is more, according to the method described above, obtains successively the more planes of incidence, and try to achieve successively each characteristic point of the first surface of lens on these planes of incidence and second each characteristic point.
As shown in Figure 5, each characteristic point of first surface on above-mentioned each plane of incidence of trying to achieve successively and each characteristic point of second are connected into respectively two fenestral fabrics successively, again described two fenestral fabrics are coupled together with two level and smooth curved surfaces respectively, form second 2 on lens first surface 1 and lens, this first surface 1 and second 2 logical light face that is lens.Fig. 5 is when optical axis process spot center, the lens one shape schematic diagram that adopts method for designing of the present invention to obtain, and these lens are symmetric.Fig. 6 is when the optical axis deviation spot center, adopts the shape schematic diagram of the polarizing lens two that method for designing of the present invention obtains, and resulting lens are symmetrical in one direction, and are mal-distribution in the direction perpendicular to this direction.Fig. 7 is embodiment lens of the inventive method, because the joint face that connects between the first surface 1 of lens and second 2 is non-logical light face, therefore, its shape can design flexibly according to lens concrete in actual use installation requirement or desired lens shape, take the trend of the light that do not have influence on logical light face as principle.
Show by a large amount of experiments, the lens that the inventive method is designed, the rectangular distribution of its irradiation hot spot, simultaneously, the uniformity of illuminance of face to be illuminated also can reach 0.9.
Claims (3)
1. the lens design method of rectangle irradiation hot spot, design procedure is as follows:
A), rectangular light spot is divided into a plurality of rectangular little rectangles along long limit or broadside, get respectively unidirectional one long limit of each little rectangle, and respectively take the plane at light source and the place, every one side of being got as the plane of incidence, in each plane of incidence, the light-emitting zone that light source is positioned at a side of optical axis is divided into a plurality of little angles according to luminous intensity with the regularity of distribution of lighting angle, and the luminous flux that is distributed in the light in each little angle is equated;
B), the long limit with the little rectangle on described each plane of incidence is divided into a plurality of segments, described segment is corresponding one by one successively with described little angle, the length of adjusting each segment is inversely proportional to the square distance of itself and the light source illuminated point to this segment, is directly proportional with the illumination of this illuminated point; Shone segment with edge segment in the described segment as initial, take marginal point as initial illuminated point, namely corresponding described little angle, leave the required distance of light source according to the lens first surface, get a bit as the point of the initiation feature on the lens first surface at the incident ray corresponding with initial illuminated point, at this some place, the straight line that is parallel to light source and initial illuminated point line forms an angle with incident ray, initial deflection of light for lens, according to predetermined ratio, described initial deflection of light is divided into the first deflection angle and the second deflection angle, the angle separated time as incident ray through the fringence behind the lens first surfaces, by the law of refraction and corresponding described little angle, obtain the Second Characteristic point adjacent with initiation feature point, the second illuminated point that this Second Characteristic point is corresponding adjacent with initial illuminated point according to above-mentioned identical step, is obtained the position of each characteristic point on the corresponding first surface of each illuminated point successively; On through the fringence behind the initiation feature point on the described first surface, to ask for a bit as the initiation feature point on second on the lens according to lens thickness, adopt and the similar method of characteristic point of trying to achieve on the first surface, try to achieve the position of each characteristic point on second;
C), each characteristic point of the first surface on above-mentioned all planes of incidence of trying to achieve successively and each characteristic point of second are linked to be respectively two fenestral fabrics, again described two fenestral fabrics are coupled together with two level and smooth curved surfaces respectively, namely consist of the first surface of lens and second, the joint face that connects lens first surface edge and second edge is non-logical light face, its shape can design according to the concrete installation requirement of lens, thereby consists of the global shape of lens.
2. the lens design method of a kind of rectangle irradiation hot spot according to claim 1 is characterized in that: the center of described optical axis process rectangular light spot.
3. the lens design method of a kind of rectangle irradiation hot spot according to claim 1 is characterized in that: the center of described optical axis deviation rectangular light spot.
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| CN201210483882.2A CN102943993B (en) | 2012-11-23 | 2012-11-23 | A kind of lens design method of rectangular illumination hot spot |
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| CN201210483882.2A CN102943993B (en) | 2012-11-23 | 2012-11-23 | A kind of lens design method of rectangular illumination hot spot |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925528A (en) * | 2014-05-04 | 2014-07-16 | 廖德明 | LED floodlight manufacturing method and LED floodlight manufactured with method |
| WO2016045176A1 (en) * | 2014-09-23 | 2016-03-31 | 上海三思电子工程有限公司 | Method for designing full-periphery light distribution lens and corresponding light distribution lens |
| CN112013301A (en) * | 2020-08-24 | 2020-12-01 | 杭州星野光学科技有限公司 | Wall-mounted lamp |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202009009763U1 (en) * | 2008-12-15 | 2009-10-15 | CREATE ELECTRONIC OPTICAL CO., LTD., Zhonghe City | Optical LED lens and lighting device thereof |
| CN201401724Y (en) * | 2009-04-13 | 2010-02-10 | 珠海泰坦新能源系统有限公司 | Special LED light source lens for road illumination |
| EP2172696A1 (en) * | 2008-09-29 | 2010-04-07 | C.R.F. Società Consortile per Azioni | Lighting device having a rectangular illuminance pattern |
| CN102012001A (en) * | 2009-09-07 | 2011-04-13 | 上海三思电子工程有限公司 | Method for designing lens for LED (Light Emitting Diode) |
| CN102193193A (en) * | 2010-03-11 | 2011-09-21 | 上海三思电子工程有限公司 | Method for designing lens having disc-shaped uniformly illuminating faculae |
| CN102287754A (en) * | 2010-06-18 | 2011-12-21 | 上海三思电子工程有限公司 | Method for designing lens with uniform square light spot |
-
2012
- 2012-11-23 CN CN201210483882.2A patent/CN102943993B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2172696A1 (en) * | 2008-09-29 | 2010-04-07 | C.R.F. Società Consortile per Azioni | Lighting device having a rectangular illuminance pattern |
| DE202009009763U1 (en) * | 2008-12-15 | 2009-10-15 | CREATE ELECTRONIC OPTICAL CO., LTD., Zhonghe City | Optical LED lens and lighting device thereof |
| CN201401724Y (en) * | 2009-04-13 | 2010-02-10 | 珠海泰坦新能源系统有限公司 | Special LED light source lens for road illumination |
| CN102012001A (en) * | 2009-09-07 | 2011-04-13 | 上海三思电子工程有限公司 | Method for designing lens for LED (Light Emitting Diode) |
| CN102193193A (en) * | 2010-03-11 | 2011-09-21 | 上海三思电子工程有限公司 | Method for designing lens having disc-shaped uniformly illuminating faculae |
| CN102287754A (en) * | 2010-06-18 | 2011-12-21 | 上海三思电子工程有限公司 | Method for designing lens with uniform square light spot |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925528A (en) * | 2014-05-04 | 2014-07-16 | 廖德明 | LED floodlight manufacturing method and LED floodlight manufactured with method |
| CN103925528B (en) * | 2014-05-04 | 2016-06-29 | 廖德明 | The LED projector lamp that LED projector lamp manufacture method and the method make |
| WO2016045176A1 (en) * | 2014-09-23 | 2016-03-31 | 上海三思电子工程有限公司 | Method for designing full-periphery light distribution lens and corresponding light distribution lens |
| CN112013301A (en) * | 2020-08-24 | 2020-12-01 | 杭州星野光学科技有限公司 | Wall-mounted lamp |
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| CN102943993B (en) | 2016-12-21 |
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Effective date of registration: 20190618 Address after: 201100 Shanghai city Minhang District Shuying Road No. 1280 Co-patentee after: Shanghai Sansi Technology Co., Ltd. Patentee after: Shanghai Sansi Tecnology Co., Ltd., Co-patentee after: Jiashan Sansi Photoelectric Technology Co., Ltd. Co-patentee after: PUJIANG SANSI PHOTOELECTRIC TECHNOLOGY CO., LTD. Address before: 201100 Shanghai city Minhang District Shuying Road No. 1280 Co-patentee before: Shanghai Sansi Technology Co., Ltd. Patentee before: Shanghai Sansi Tecnology Co., Ltd., Co-patentee before: Jiashan Sansi Photoelectric Technology Co., Ltd. |
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