CN101900292B - Condenser lens and lamp using same - Google Patents

Condenser lens and lamp using same Download PDF

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Publication number
CN101900292B
CN101900292B CN 201010241839 CN201010241839A CN101900292B CN 101900292 B CN101900292 B CN 101900292B CN 201010241839 CN201010241839 CN 201010241839 CN 201010241839 A CN201010241839 A CN 201010241839A CN 101900292 B CN101900292 B CN 101900292B
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Prior art keywords
line segment
lens
axis angulation
lens axis
light source
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Expired - Fee Related
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CN101900292A (en
Inventor
周明杰
罗英达
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Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Engineering Co Ltd
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Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Engineering Co Ltd
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Abstract

The invention relates to a condenser lens and a lamp using the same. The condenser lens is truncated cone-shaped and is symmetric relative to the lens axis. The condenser lens is characterized in that the middle of a first end surface with smaller diameter sinks inwards to form a light source accommodating cavity for adaptively accommodating the LED light source and the bottom surface of the light source accommodating cavity protrudes outwards to form a convex sphere; a second end surface with larger diameter is a plane; and a side wall of the condenser lens is a fully reflecting surface, the generatrix of the truncated cone-shaped lens is a fold line and is formed by connecting multiple line segments in sequence, and the multiple line segments and the lens axis form an angle shown in the specification, wherein n is the index of refraction in condenser lens. The invention condenses the light from any angle of the LED light source, fully utilizes the light from the LED light source, ensures the radiant angle of the emergent light of the condenser lens to be less than 5 degrees and greatly improves the condensation effect.

Description

Collector lens and use the light fixture of this collector lens
[technical field]
The present invention relates to a kind of lens, relate in particular to a kind of light fixture that is applicable to the collector lens of led light source and uses this collector lens.
[background technology]
Along with making science and technology and development of semiconductor, led light source becomes the substitute of conventional light source by force day by day with its little power consumption, brightness.
But led light source is limit by self character, and angle of radiation is very big, easily diffusion.When using led light source, need carry out optically focused to it.
At present, the paraboloidal reflector of the general employing of optically focused mode to led light source, but this mode will realize luminous angle, and very little (spending less than 5 as luminous angle) need do the reflector size bigger, otherwise the less light in the luminous angle of led light source can't be utilized, cause the final luminous angle of led light source bigger, waste a large amount of manufactured materials simultaneously.Also have and adopt convex lens that led light source is carried out optically focused, but the bigger light in the luminous angle of this mode LED can't be utilized, lower to the utilization rate of led light source luminous flux, finally cause the light efficiency utilization rate of light fixture too low.
[summary of the invention]
In view of this, be necessary to provide a kind of led light source light that takes full advantage of, luminous angle is less than the collector lens of 5 degree and the light fixture that uses this collector lens.
A kind of collector lens, described collector lens is with the axisymmetric circular platform type lens of lens light, less first end face middle part of diameter caves inward and forms a light source containing cavity for adaptive ccontaining led light source, and described light source containing cavity bottom surface is outwards protruded and formed protruding sphere; Described collector lens second end surface with larger diameter is the plane; The sidewall of described collector lens is fully reflecting surface, and the bus of described circular platform type lens is broken line, and described bus is in turn connected to form by the multistage line segment, and described multistage line segment and described lens axis angulation are
Figure BSA00000212571700021
Extremely Wherein, n is the collector lens refractive index.
Preferably, described protruding spherical radius is R, and R satisfies:
1/R＝1/[2(n-1)L]，
Wherein, L is that the sphere summit of protruding sphere is to the distance at led light source center.
Preferably, described refractive index n is 1.59, and the sphere summit of described protruding sphere is 3mm to the distance L at led light source center, and protruding spherical radius R is 3.54mm.
Preferably, described bus is in turn connected to form by 13 sections line segments, is respectively by first end face to the second end face of described collector lens: first line segment, second line segment, the 3rd line segment, the 4th line segment, the 5th line segment, the 6th line segment, the 7th line segment, the 8th line segment, the 9th line segment, the tenth line segment, the 11 line segment, the 12 line segment and the 13 line segment.
Preferably,
First line segment, satisfy with the lens axis angulation:
Figure BSA00000212571700023
Second line segment, satisfy with the lens axis angulation:
Figure BSA00000212571700024
The 3rd line segment, satisfy with the lens axis angulation:
Figure BSA00000212571700025
The 4th line segment, satisfy with the lens axis angulation:
The 5th line segment, satisfy with the lens axis angulation:
Figure BSA00000212571700027
The 6th line segment, satisfy with the lens axis angulation:
Figure BSA00000212571700028
The 7th line segment, satisfy with the lens axis angulation:
The 8th line segment, satisfy with the lens axis angulation:
Figure BSA000002125717000210
The 9th line segment, satisfy with the lens axis angulation:
The tenth line segment, satisfy with the lens axis angulation:
Figure BSA00000212571700031
The 11 line segment, satisfy with the lens axis angulation:
Figure BSA00000212571700032
The 12 line segment, satisfy with the lens axis angulation:
Figure BSA00000212571700033
The 13 line segment, satisfy with the lens axis angulation:
Figure BSA00000212571700034
Preferably,
First line segment and lens axis angulation are 44.21 °;
Second line segment and lens axis angulation are 42.65 °;
The 3rd line segment and lens axis angulation are 41.09 °;
The 4th line segment and lens axis angulation are 39.55 °;
The 5th line segment and lens axis angulation are 38.04 °;
The 6th line segment and lens axis angulation are 36.56 °;
The 7th line segment and lens axis angulation are 35.12 °;
The 8th line segment and lens axis angulation are 33.74 °;
The 9th line segment and lens axis angulation are 32.43 °;
The tenth line segment and lens axis angulation are 31.19 °;
The 11 line segment and lens axis angulation are 30.03 °;
The 12 line segment and lens axis angulation are 28.98 °;
The 13 line segment and lens axis angulation are 28.05 °.
Preferably, the side of described light source containing cavity is the face of cylinder.
Preferably, described light source containing cavity diameter is 3mm.
Preferably, the material of described collector lens is Merlon or polymethyl methacrylate.
A kind of light fixture that comprises collector lens described above.
Above-mentioned collector lens and use the light fixture of this collector lens, first end face middle part caves inward and forms the light source containing cavity, light source containing cavity bottom surface is outwards protruded and is formed protruding sphere, second end face is the plane, sidewall is fully reflecting surface, the lens bus of these circular platform type lens is broken line, and bus is in turn connected to form by the multistage line segment, and multistage line segment and lens axis angulation are
Figure BSA00000212571700041
Extremely
Figure BSA00000212571700042
To led light source at any angle light carry out optically focused, take full advantage of led light source light, and make the luminous angle of collector lens emergent ray less than 5 the degree, improved spotlight effect greatly.
[description of drawings]
Fig. 1 is collector lens section of structure among the embodiment;
Fig. 2 is collector lens structure vertical view among the embodiment;
Fig. 3 is collector lens structure side view among the embodiment;
Fig. 4 is collector lens schematic diagram among the embodiment;
Fig. 5 is collector lens emergent ray distribution curve flux schematic diagram among the embodiment;
Fig. 6 is fitting structure schematic diagram among the embodiment.
[specific embodiment]
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
This collector lens is with the axisymmetric circular platform type lens of lens light, less first end face middle part of diameter caves inward and forms a light source containing cavity that is used for adaptive ccontaining led light source, light source containing cavity bottom surface is outwards protruded and is formed protruding sphere, and second end surface with larger diameter is the plane.The sidewall of collector lens is fully reflecting surface, and the bus of circular platform type lens is broken line, and bus is in turn connected to form by the multistage line segment, and this bus revolves the sidewall that three-sixth turn forms collector lens around lens axis; Multistage line segment and lens axis angulation are
Figure BSA00000212571700051
Extremely
Figure BSA00000212571700052
Wherein, n is the collector lens refractive index, the arcsin function of Arcsin (x) expression x, and its domain of definition is [1,1], function value is [90 °, 90 °].
Fig. 1 is collector lens section of structure among the embodiment.Fig. 2 is collector lens structure vertical view among the embodiment.Fig. 3 is collector lens structure side view among the embodiment.In conjunction with Fig. 1 and Fig. 3, this collector lens is the circular platform type lens, comprises first end face 100, second end face 200 and the sidewall 300 that connects first end face 100 and second end face 200.
First end face, 100 middle parts cave inward and form light source containing cavity 110, and light source containing cavity 110 bottom surfaces are outwards protruded and formed protruding sphere 120, and the side 111 of light source containing cavity 110 is the face of cylinder.Led light source light through the side 111 and protruding sphere 120 go into to inject collector lens.Among this embodiment, light source containing cavity 110 diameters are D, and size is determined according to the concrete size of led light source.When placing led light source, the led light source center overlaps with the lens axis 400 of collector lens.
Among this embodiment, protruding sphere 120 radiuses are R.If the sphere summit of protruding sphere 120 (being the intersection point of protruding sphere 120 and lens axis 400) is L to the distance at led light source center, the refractive index of collector lens is n, and then R satisfies following formula:
1/R＝1/[2(n-1)L]
Sidewall 300 is fully reflecting surface, and the light of led light source incident is carried out total reflection, make light after total reflection with lens axis 400 near parallel outgoing.Sidewall 300 revolves three-sixth turn by the bus 500 of circular platform type lens around lens axis 400 and forms.Bus 500 is broken line, is made up of the multistage line segment that connects successively.Among this embodiment, bus 500 is made up of 13 sections line segments that connect successively, is respectively by first end face, 100 to second end faces 200:
First line segment 501, satisfy with lens axis 400 angulations:
Figure BSA00000212571700053
Second line segment 502, satisfy with lens axis 400 angulations:
Figure BSA00000212571700054
The 3rd line segment 503, satisfy with lens axis 400 angulations:
Figure BSA00000212571700055
The 4th line segment 504, satisfy with lens axis 400 angulations:
Figure BSA00000212571700061
The 5th line segment 505, satisfy with lens axis 400 angulations:
Figure BSA00000212571700062
The 6th line segment 506, satisfy with lens axis 400 angulations:
Figure BSA00000212571700063
The 7th line segment 507, satisfy with lens axis 400 angulations:
Figure BSA00000212571700064
The 8th line segment 508, satisfy with lens axis 400 angulations:
Figure BSA00000212571700065
The 9th line segment 509, satisfy with lens axis 400 angulations:
Figure BSA00000212571700066
The tenth line segment 510, satisfy with lens axis 400 angulations:
Figure BSA00000212571700067
The 11 line segment 511, satisfy with lens axis 400 angulations:
Figure BSA00000212571700068
The 12 line segment 512, satisfy with lens axis 400 angulations:
Figure BSA00000212571700069
The 13 line segment 513, satisfy with lens axis 400 angulations:
Figure BSA000002125717000610
In a preferred embodiment, these collector lens refractive index n=1.59, the distance L=3mm at led light source center is arrived on the sphere summit of protruding sphere 120, radius R=3.54mm, the diameter D=3mm of light source containing cavity 110, then:
First line segment 501 is 44.21 ° with lens axis 400 angulations;
Second line segment 502 is 42.65 ° with lens axis 400 angulations;
The 3rd line segment 503 is 41.09 ° with lens axis 400 angulations;
The 4th line segment 504 is 39.55 ° with lens axis 400 angulations;
The 5th line segment 505 is 38.04 ° with lens axis 400 angulations;
The 6th line segment 506 is 36.56 ° with lens axis 400 angulations;
The 7th line segment 507 is 35.12 ° with lens axis 400 angulations;
The 8th line segment 508 is 33.74 ° with lens axis 400 angulations;
The 9th line segment 509 is 32.43 ° with lens axis 400 angulations;
The tenth line segment 510 is 31.19 ° with lens axis 400 angulations;
The 11 line segment 511 is 30.03 ° with lens axis 400 angulations;
The 12 line segment 512 is 28.98 ° with lens axis 400 angulations;
The 13 line segment 513 is 28.05 ° with lens axis 400 angulations.
Fig. 4 is collector lens schematic diagram among the embodiment.Fig. 5 is collector lens emergent ray distribution curve flux schematic diagram among the embodiment.In conjunction with Fig. 1 to Fig. 5, led light source is arranged in the light source containing cavity 110.The light that the angle that led light source sends is less, after the refraction of excess convexity sphere 120, emergent ray and lens axis 400 are near parallel.Led light source sends the bigger light of angle, and 111 refraction arrives sidewall 300 through the side, and 300 pairs of light of sidewall are launched entirely, through the light of full emission and lens axis 400 near parallel, at last by 200 outgoing of second end face.After measured, this luminous angle of collector lens emergent ray is less than 5 degree, and spotlight effect is good.Simultaneously, second end face 200 is the plane, has effectively reduced light decay.
Among this embodiment, this collector lens adopts transparent material, is convenient to injection mo(u)lding, preferably adopts Merlon (PC) or polymethyl methacrylate (PMMA) material.
In addition, the present invention also provides a kind of light fixture that comprises above-mentioned collector lens.As required, this light fixture can comprise the above-mentioned collector lens that same horizontal distribution rule arranges more than two, and as shown in Figure 6, this light fixture comprises 3 above-mentioned collector lenses, 3 collector lenses are same horizontal distribution rule and arrange, and the corresponding led light source of each collector lens.After measured, this light fixture emergent ray distribution curve flux is consistent with single collector lens emergent ray distribution curve flux, and spotlight effect is good, and this light fixture luminous flux is greatly improved simultaneously, and illuminance is greatly improved.
Above-mentioned collector lens and the light fixture that uses this collector lens, first end face middle part caves inward and forms the light source containing cavity, light source containing cavity bottom surface is outwards protruded and is formed protruding sphere, second end face is the plane, sidewall is fully reflecting surface, the bus of circular platform type lens is broken line, and bus is in turn connected to form by the multistage line segment, and multistage line segment and lens axis angulation are
Figure BSA00000212571700071
Extremely
Figure BSA00000212571700072
To led light source at any angle light carry out optically focused, take full advantage of led light source light, and make the luminous angle of collector lens emergent ray less than 5 the degree, improved spotlight effect greatly.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.

Claims (6)

1. collector lens, it is characterized in that, described collector lens is with the axisymmetric circular platform type lens of lens light, and less first end face middle part of diameter caves inward and forms a light source containing cavity for adaptive ccontaining led light source, and described light source containing cavity bottom surface is outwards protruded and formed protruding sphere; Described collector lens second end surface with larger diameter is the plane; The sidewall of described collector lens is fully reflecting surface, and the bus of described circular platform type lens is broken line, and described bus is in turn connected to form by the multistage line segment, and described multistage line segment and described lens axis angulation are
Figure FDA00002670721300011
Extremely
Figure FDA00002670721300012
Wherein, n is the collector lens refractive index;
Described protruding spherical radius is R, and R satisfies:
1/R=1/[2（n-1）L]，
Wherein, L is that the sphere summit of protruding sphere is to the distance at led light source center;
Described bus is in turn connected to form by 13 sections line segments, is respectively by first end face of described collector lens, second end face to described collector lens: first line segment, second line segment, the 3rd line segment, the 4th line segment, the 5th line segment, the 6th line segment, the 7th line segment, the 8th line segment, the 9th line segment, the tenth line segment, the 11 line segment, the 12 line segment and the 13 line segment;
First line segment, satisfy with the lens axis angulation:
Figure FDA00002670721300013
Second line segment, satisfy with the lens axis angulation:
Figure FDA00002670721300014
The 3rd line segment, satisfy with the lens axis angulation:
Figure FDA00002670721300015
The 4th line segment, satisfy with the lens axis angulation:
The 5th line segment, satisfy with the lens axis angulation:
Figure FDA00002670721300017
The 6th line segment, satisfy with the lens axis angulation:
Figure FDA00002670721300018
The 7th line segment, satisfy with the lens axis angulation:
Figure FDA00002670721300019
The 8th line segment, satisfy with the lens axis angulation:
Figure FDA000026707213000110
The 9th line segment, satisfy with the lens axis angulation:
Figure FDA000026707213000111
The tenth line segment, satisfy with the lens axis angulation:
Figure FDA00002670721300021
The 11 line segment, satisfy with the lens axis angulation:
The 12 line segment, satisfy with the lens axis angulation:
Figure FDA00002670721300023
The 13 line segment, satisfy with the lens axis angulation:
Figure FDA00002670721300024
The side of described light source containing cavity is the face of cylinder.
2. collector lens according to claim 1 is characterized in that, described refractive index n is 1.59, and the sphere summit of described protruding sphere is 3mm to the distance L at led light source center, and protruding spherical radius R is 3.54mm.
3. collector lens according to claim 1 is characterized in that,
First line segment and lens axis angulation are 44.21 °;
Second line segment and lens axis angulation are 42.65 °;
The 3rd line segment and lens axis angulation are 41.09 °;
The 4th line segment and lens axis angulation are 39.55 °;
The 5th line segment and lens axis angulation are 38.04 °;
The 6th line segment and lens axis angulation are 36.56 °;
The 7th line segment and lens axis angulation are 35.12 °;
The 8th line segment and lens axis angulation are 33.74 °;
The 9th line segment and lens axis angulation are 32.43 °;
The tenth line segment and lens axis angulation are 31.19 °;
The 11 line segment and lens axis angulation are 30.03 °;
The 12 line segment and lens axis angulation are 28.98 °;
The 13 line segment and lens axis angulation are 28.05 °.
4. collector lens according to claim 1 is characterized in that, described light source containing cavity diameter is 3mm.
5. collector lens according to claim 1 is characterized in that, the material of described collector lens is Merlon or polymethyl methacrylate.
6. light fixture that comprises the arbitrary described collector lens of claim 1 to 5.
CN 201010241839 2010-07-30 2010-07-30 Condenser lens and lamp using same Expired - Fee Related CN101900292B (en)

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