CN103499067A - Symmetrical structured LED light-total-reflection collimation system with theoretically lossless lighting effects - Google Patents
Symmetrical structured LED light-total-reflection collimation system with theoretically lossless lighting effects Download PDFInfo
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- CN103499067A CN103499067A CN201310473412.2A CN201310473412A CN103499067A CN 103499067 A CN103499067 A CN 103499067A CN 201310473412 A CN201310473412 A CN 201310473412A CN 103499067 A CN103499067 A CN 103499067A
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Abstract
The invention belongs to the technical field of optics, and particularly relates to a symmetrical structured LED light-total-reflection collimation system with theoretically lossless lighting effects. The collimation system includes an LED light source module, improved ellipsoid reflectors, improved first parabolic reflectors and improved second parabolic reflectors. A light source is arranged at the first focal points of the ellipsoid reflectors, the improved first parabolic reflectors are located below the ellipsoid reflectors, and the focal points of the first parabolic reflectors coincide with the second focal points of the ellipsoid reflectors; the focal points of the improved second parabolic reflectors are located at the light source, and the whole system is of a left-right mirror symmetry structure; part of the light emitted from the light source forms collimated light through the ellipsoid reflectors and the first parabolic reflectors, and the other part of the light forms collimated light through the second parabolic reflectors. Only the reflectors are used in the whole system, the dispersion of multispectral hybrid light is avoided, and effective light energy is high in utilization rate.
Description
Technical field
The invention belongs to optical technical field, be specifically related to the light total reflection symmetrical structure colimated light system of the harmless light efficiency of a kind of theory based on LED light source.
Background technology
Along with technological progress, LED is as illuminating source, and it is efficient, environmental protection, volume are little, the life-span advantages of higher is taken seriously gradually, and present stage LED more and more is used among automotive lighting, home lighting and commercial lighting.Design for the fitting structure of LED light source is also more and more diversified.
Because LED has 180 ° of characteristics that single face is luminous, the project organization of the simple reflector of traditional use or lens often can only utilize the part energy of LED, and the total energy utilization rate is in the 60%-70% left and right.And low due to capacity usage ratio, cause need to higher wattage LED reach illuminating effect, so not only not reaching energy-conservation purpose, to make the heat radiation of whole light fixture group require higher simultaneously, is unfavorable for the extensive popularization of LED.
Summary of the invention
For above-mentioned defect, the object of the invention is to improve the utilization rate of fitting structure for LED luminous energy as far as possible, the light of 180 ° that LED is sent converts the collimated light beam that is conducive to further luminous intensity distribution to.The present invention is by the structure of ellipsoid and multi-paraboloid combination, and the light that LED light source is sent converts collimated light beam to, and keeps 100% the efficiency of light energy utilization.
The colimated light system of the efficiency light total reflection symmetrical structure of LED light source provided by the invention, comprise LED module 1, improved ellipsoidal reflector 2, improved the first paraboloid 3 and improved the second parabola transmitter 4.The light source of LED module 1 is placed in the first focus place of ellipsoidal reflector 2; Improved the first paraboloid 3 is positioned at ellipsoidal reflector 2 belows, and its focus overlaps with ellipsoidal reflector 2 second focuses; Improved the second paraboloid 4 focuses are positioned at LED light source 1 geometric center position, and whole system is the left and right mirror image; Wherein, the a part of light beam of the light that described LED module 1 light source sends in solid angle is α converges at the second focus place of ellipsoidal reflector 2 through ellipsoidal reflector 2, improved the first paraboloid 3 forms collimated light again, and the light of the remainder that described LED module 1 light source sends i.e. direct improved the second paraboloid 4 of light beam in the β angle (β=β 1+ β 2) in the outside, α angle forms collimated lights; The light that described LED module 1 light source sends all is utilized, system utilization ratio 100%.0 °<α<180 °, 0 °<β<180 °, and alpha+beta=180 °.β 1, β 2
?for the solid angle of both sides, α angle, β 1=β 2, as shown in Figure 2.
As follows about further illustrating of α angle and β angle: general LED is the light source that Lambertian radiator distributes, through the lighting angle in the meridian plane (in paper) of LED light-emitting area geometric center normal, be 180 degree, the light beam that LED light source module of the present invention sends, the first improved ellipsoidal reflector of some light in its face, light beam converges to improved ellipsoid the second focus place, because improved ellipsoidal reflector the second focus overlaps with improved the first parabolic focus, improved the first parabola collimation outgoing of this part light, this angle is exactly the α angle, a part of light beam does not have improved ellipsoidal reflector in addition, be directly incident on improved the second parabolic surface by the LED light source module, because the geometric center of LED light source module overlaps with the second parabolic focus, this part light is with regard to improved the second parabola collimation outgoing, this angle is exactly 2 jiaos of 1 jiao of β and β, here β=β 1+ β 2, β 1=β 2.
About improved ellipsoidal reflector 2, the conceptual illustration of improved the first paraboloid 3 and improved the second parabola transmitter 4 is as follows: LED light source is one group of die set light source, light-emitting area has certain size, if its light-emitting area is less than 1/10 of the effective clear aperature of reflecting surface in its light communication process, can think that LED light source is approximately spot light, at this moment, the reflecting surface of described improved ellipsoidal reflector is exactly the ellipsoid of standard, the reflecting surface of described improved the first paraboloid and improved the second paraboloid is exactly the parabola of standard, if its light-emitting area is greater than 1/10 of the effective clear aperature of reflecting surface in its light communication process, LED light source is exactly the light source of an expansion, at this moment the LED light source of expansion is thought to the light source that a plurality of spot lights form, LED light source only is positioned at the part light beam at focus place just according to desirable beam propagation, namely from the light beam sent of ellipsoid the first focus, converge to the second focus of ellipsoid through the ellipsoid reflection, the light beam sent from parabolic focus collimates outgoing through parabolic reflector, form other spot light of LED light source of expansion due in the out of focus position, just can not converge to the second focus near the outgoing beam from ellipsoid the first focus through the ellipsoid reflection, just can not collimate outgoing near the outgoing beam from parabolic focus through parabolic reflector.So, think for the LED light source of expansion the light source that a plurality of spot lights form, spot light beyond focus is through the ellipsoid reflex time, ellipsoid is divided into to a plurality of zones, principle according to the light mapping, allow the light beam that incides each ellipsoid reflector space, correction through high-order curved surface, converge to the second focus place of ellipsoid, these revised ellipsoid reflector spaces are fitted to a new ellipsoid, and at this moment described improved ellipsoidal reflector is and take the reflector that this new ellipsoid is reflecting surface, improved ellipsoidal reflector converges to the spot light that the hot spot at the second focus place neither be absolute, it is an expansion light source, also can think the light source that a plurality of spot lights form, because improved ellipsoid the second focus geometric center overlaps with the first parabolic focus, spot light beyond this focus is during through the first parabolic reflector, the first parabola also is divided into to a plurality of zones, principle according to the light mapping, allow the light beam that incides each the first parabolic reflector zone, collimate outgoing after the correction of high-order curved surface, these revised first parabolic reflector zones are fitted to first a new parabola, at this moment described improved the first paraboloid is and take the reflector that this first new parabola is reflecting surface, because the LED light source of expansion is thought the light source that a plurality of spot lights form, spot light beyond the focus is during through the second parabolic reflector, the second parabola is divided into to a plurality of zones, principle according to the light mapping, allow the light beam that incides each the second parabolic reflector zone, collimate outgoing after the correction of high-order curved surface, these revised second parabolic reflector zones are fitted to second a new parabola, and at this moment described improved the second paraboloid is and take the reflector that this second new parabola is reflecting surface.
The LED light source that described LED module 1 is single-chip or multi-chip package, light source size 0.5*0.5-3*3mm, the LED light source light-emitting area is perpendicular to ellipsoidal reflector group symmetry;
Described improved ellipsoidal reflector 2 its first focal length 5-30mm, the second focal length 30-65mm, length is 25-60mm, its first focal position overlaps with the light source center of described LED module 1, inner surface adopts high reflectance minute surface plated film, and reflectivity is up to more than 95%.
Described improved the first paraboloid 3 is 180 degree paraboloidal antennas, focal length 20-40mm, half that bore is 80-160mm, focus is positioned at described improved ellipsoidal reflector 2 second focus places, inner surface adopts high reflectance minute surface plated film, and reflectivity is up to more than 95%.
Described improved the second paraboloid is the paraboloidal part of Rotational Symmetry that focus is positioned at the LED light source geometric center, and focal length is 46mm-99mm, and inner surface adopts high reflectance minute surface plated film, and reflectivity is up to more than 95%.
The present invention can be increased to 100% by the LED capacity usage ratio, greatly reduces energy loss, reduces the heat radiation requirement of LED light fixture under equal lighting requirement, reduces energy consumption.For the overall application of LED provides good technical support.
The accompanying drawing explanation
Fig. 1 is the structural representation of light total reflection symmetrical structure colimated light system of the present invention.
Fig. 2 is the index path of light total reflection symmetrical structure colimated light system of the present invention.
Fig. 3 is that LED light source of the present invention a part of light of outgoing in the α angle is assembled through improved ellipsoidal reflector, then the index path collimated through improved the first paraboloid.
Fig. 4 directly outgoing that is LED light source of the present invention without improved ellipsoidal reflector reflection at β angle (β=β
1+ β
2) another part light of interior outgoing is through the index path of improved the second paraboloid collimation.
Fig. 5 is the example graphics of light total reflection symmetrical structure colimated light system of the present invention.
Fig. 6 is the receiving plane light shape figure of 5m place of light total reflection symmetrical structure colimated light system of the present invention.
Number in the figure: 1 is LED light source, and 2 is improved ellipsoidal reflector, and 3 is improved the first paraboloid, and 4 is improved the second paraboloid.
The specific embodiment
Efficient LED light total reflection symmetrical structure colimated light system comprises that LED light source module 1, improved ellipsoidal reflector 2, the first paraboloid 3 and the second paraboloid 4 form.The light source 1 of LED module is placed in the first focus place of ellipsoidal reflector 2, and the first paraboloid 3 is positioned at ellipsoidal reflector 2 belows, and its focus overlaps with ellipsoidal reflector 2 second focuses.The second paraboloid 4 focuses are positioned at LED light source 1 geometric center position, and whole system is the left and right mirror image.The light part that LED die set light source 1 sends converges at the second focus place of ellipsoidal reflector 2 through ellipsoidal reflector 2, form collimated light through the first paraboloid 3 again, the light of the remainder that described LED die set light source 1 sends directly forms collimated light through the second paraboloid 4.All light that light source led sends are all formed collimated light, utilization rate 100% by systematic reflection.
As shown in Figure 1 and Figure 2, be the structural representation of the colimated light system of the present invention's efficiency light total reflection symmetrical structure of using LED light source.In an embodiment, adopt the white light LEDs module 1 of single-chip COB encapsulation as light source, driving voltage is 3.3 V, electric current is 300.0 mA, ellipsoidal reflector 2 its length are 60mm, bore is half of 60mm, and the first focus is positioned at the LED light source center, and the second focus is positioned at ellipsoidal reflector 2 length direction distance L ED light source center position 60mm; Paraboloid 3 focuses are positioned at ellipsoidal reflector 2 second focal positions, focal length 27mm; Paraboloid 4 focuses are positioned at the LED light source center, focal length 57mm.
The light that LED light source sends all converts collimated ray to through after colimated light system of the present invention, and the efficiency of light energy utilization reaches 100% in theory.
The present invention has following characteristics:
1. adopt LED as light source, the length of improved the second paraboloid 4 is along with the beam angle of the light directly do not reflected through improved ellipsoidal reflector 2 in LED module 1 emergent ray
variation and change, when
when angle becomes large, improved the second paraboloid 4 length will correspondingly extend to guarantee
interior light collimates outgoing fully, when less ellipsoidal reflector 2 reflex times down to being modified fully of LED half light emitting anger, improved the second paraboloid 4 length vanishing;
2. structure as shown in Figure 1, wherein improved ellipsoidal reflector 2 is based on standard spheroid face reflector design, when LED light source 1 can be similar to while regarding spot light as, this reflector adopts the ellipsoid structure of standard, when LED light source 1 is an expansion light source, ellipsoidal reflector 2 after this reflector employing improves can be focused near the second focus with the light that guarantees the outgoing of LED area source, when the disc of confusion diameter of improved ellipsoidal reflector 2 at the second focus place be the maximum clear aperture of system 1/10 or more hour, improved the first paraboloid 3 adopts the paraboloid structure of standard, when the disc of confusion diameter of improved ellipsoidal reflector 2 at the second focus place be greater than the maximum clear aperture of system 1/10 the time, this reflector adopts improved the first paraboloid structure, to guarantee can to collimate outgoing at the light of the disc of confusion place outgoing at the second focus place through its reflection by improved ellipsoidal reflector 2.Improved the second paraboloid 4, LED light source 1 is approximate can regard spot light as the time, adopts the paraboloid structure of standard, when LED light source 1 is an expansion light source, adopts improved paraboloid structure, to guarantee that LED exists
direct light in angle can collimate outgoing through its reflection;
3. the LED light total reflection colimated light system of theoretical harmless light efficiency as shown in Figure 1, the beam energy 100% collimation outgoing that LED light source 1 can be sent in theory, the reflection loss of reflector is only arranged, and the reflectivity of reflector can be accomplished more than 95% or be higher, system adopts again the full-reflector design fully, without any lens arrangement, so the optical system efficiency of collimation is very high.
Claims (5)
1. the LED light total reflection colimated light system of the theoretical harmless light efficiency of symmetrical structure formula, is characterized in that being comprised of LED light source module, improved ellipsoidal reflector, improved the first paraboloid and improved the second paraboloid; The LED light source module is placed in the first focus place of improved ellipsoidal reflector, and improved the first paraboloid is positioned at the ellipsoidal reflector below, and its focus overlaps with ellipsoidal reflector the second focus; Improved the second paraboloid focus is positioned at LED light source module geometric center position, and whole system is the left and right mirror image; Wherein, the a part of light beam of the light that described LED light source module sends in solid angle is α converges at the second focus place of ellipsoidal reflector through ellipsoidal reflector, improved the first paraboloid forms collimated light again, and the light of the remainder that described LED light source module sends be direct improved the second paraboloid formation collimated light of a part of light beam in β in the outside, α angle solid angle; 0 °<α<180 °, 0 °<β<180 °, and alpha+beta=180 °;
If the light-emitting area of LED light source module is less than 1/10 of the effective clear aperature of reflecting surface in its light communication process, think that LED light source is approximately spot light, at this moment, the reflecting surface of described improved ellipsoidal reflector is exactly the ellipsoid of standard, and the reflecting surface of described improved the first paraboloid and improved the second paraboloid is exactly the parabola of standard; If the light-emitting area of LED light source module is greater than 1/10 of the effective clear aperature of reflecting surface in its light communication process, at this moment the LED light source module is thought to the light source that a plurality of spot lights form, LED light source is positioned at the part light beam at focus place according to desirable beam propagation, namely from the light beam sent of ellipsoid the first focus, converge to the second focus of ellipsoid through the ellipsoid reflection, the light beam sent from parabolic focus collimates outgoing through parabolic reflector; Spot light beyond focus is through the ellipsoid reflex time, ellipsoid is divided into to a plurality of zones, principle according to the light mapping, allow the light beam that incides each ellipsoid reflector space, correction through high-order curved surface, converge to the second focus place of ellipsoid, these revised ellipsoid reflector spaces are fitted to a new ellipsoid, at this moment described improved ellipsoidal reflector is and take the reflector that this new ellipsoid is reflecting surface; Because improved ellipsoid the second focus geometric center overlaps with the first parabolic focus, spot light beyond this focus is during through the first parabolic reflector, the first parabola also is divided into to a plurality of zones, principle according to the light mapping, allow the light beam that incides each the first parabolic reflector zone, collimate outgoing after the correction of high-order curved surface, these revised first parabolic reflector zones are fitted to first a new parabola, and at this moment described improved the first paraboloid is and take the reflector that this first new parabola is reflecting surface; Spot light beyond the focus is during through the second parabolic reflector, the second parabola is divided into to a plurality of zones, principle according to the light mapping, allow the light beam that incides each the second parabolic reflector zone, collimate outgoing after the correction of high-order curved surface, these revised second parabolic reflector zones are fitted to second a new parabola, and at this moment described improved the second paraboloid is and take the reflector that this second new parabola is reflecting surface.
2. colimated light system according to claim 1, it is characterized in that the LED light source that described LED light source module is single-chip or multi-chip package, light source size 0.5*0.5-3*3mm, LED light source light-emitting area normal is perpendicular to the opening section at ellipsoidal reflector group leader axle place.
3. colimated light system according to claim 1, it is characterized in that, its first focal length of described improved ellipsoidal reflector 5-30mm, the second focal length 30-65mm, length is 25-60mm, its first focal position overlaps with the light source geometric center position of described LED module 1, and inner surface adopts high reflectance minute surface plated film, and reflectivity is up to more than 95%.
4. colimated light system according to claim 1, it is characterized in that: described improved the first paraboloid is 180 degree paraboloidal antennas, focal length 20-40mm, bore is half of 80-160mm, focus is positioned at described ellipsoidal reflector 2 second focus places, inner surface adopts high reflectance minute surface plated film, and reflectivity is up to more than 95%.
5. colimated light system according to claim 1, it is characterized in that: described improved the second paraboloid is the paraboloidal part of Rotational Symmetry that focus is positioned at LED light source module geometric center, focal length is 46mm-99mm, inner surface adopts high reflectance minute surface plated film, and reflectivity is up to more than 95%.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104019376A (en) * | 2014-06-26 | 2014-09-03 | 孙波 | Movable type shadowless lamp |
| CN104676490A (en) * | 2015-02-16 | 2015-06-03 | 深圳市科曼医疗设备有限公司 | Lighting component and operating lamp |
| CN108238287A (en) * | 2016-12-26 | 2018-07-03 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of remote directed radiation heating system of combination of light sources formula |
| CN111140820A (en) * | 2019-10-15 | 2020-05-12 | 深圳星标科技股份有限公司 | Point light source integrated light condensation assembly and lamp thereof |
| CN111828878A (en) * | 2020-07-28 | 2020-10-27 | 西安应用光学研究所 | Strong light simulation light source lighting device |
| CN115016200A (en) * | 2022-06-10 | 2022-09-06 | 杭州海康威视数字技术股份有限公司 | Reflective light supplementing device and camera |
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| JP2002184212A (en) * | 2000-12-15 | 2002-06-28 | Stanley Electric Co Ltd | Led lighting fixture for vehicle |
| JP2004220912A (en) * | 2003-01-15 | 2004-08-05 | Ichikoh Ind Ltd | Vehicular lighting device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019376A (en) * | 2014-06-26 | 2014-09-03 | 孙波 | Movable type shadowless lamp |
| CN104676490A (en) * | 2015-02-16 | 2015-06-03 | 深圳市科曼医疗设备有限公司 | Lighting component and operating lamp |
| CN108238287A (en) * | 2016-12-26 | 2018-07-03 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of remote directed radiation heating system of combination of light sources formula |
| CN111140820A (en) * | 2019-10-15 | 2020-05-12 | 深圳星标科技股份有限公司 | Point light source integrated light condensation assembly and lamp thereof |
| CN111828878A (en) * | 2020-07-28 | 2020-10-27 | 西安应用光学研究所 | Strong light simulation light source lighting device |
| CN111828878B (en) * | 2020-07-28 | 2022-04-05 | 西安应用光学研究所 | Strong light simulation light source lighting device |
| CN115016200A (en) * | 2022-06-10 | 2022-09-06 | 杭州海康威视数字技术股份有限公司 | Reflective light supplementing device and camera |
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