CN101900294B - Condensing lens and lamp using same - Google Patents

Condensing lens and lamp using same Download PDF

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CN101900294B
CN101900294B CN 201010241944 CN201010241944A CN101900294B CN 101900294 B CN101900294 B CN 101900294B CN 201010241944 CN201010241944 CN 201010241944 CN 201010241944 A CN201010241944 A CN 201010241944A CN 101900294 B CN101900294 B CN 101900294B
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line segment
lens
lens axis
axis angulation
satisfy
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CN101900294A (en
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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 condensing lens and a lamp using the same. The condensing lens is a cone lens which is symmetrical about a lens axis, wherein the middle part of a first end face with smaller diameter dents inwardly to form a light source accommodating cavity for matching and accommodating an LED light source; the middle part of a second end face with larger diameter dents inwardly to form a convex spherical surface of which the convex side faces the second end face; the side wall of the condensing lens is a fully reflecting surface; the bus of the cone lens is a fold line and is formed by sequentially connecting a plurality of segments; and the angle between the plurality of segments and the lens axis is shown in the specifications, wherein n is the refractive index of the condensing lens. Light rays of the LED light source at any angle are condensed and fully utilized and the luminous angle of emergent rays of the condensing lens is less than 5 degrees, so that the condensation effect is greatly improved.

Description

A kind of collector lens and the light fixture that uses 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 the development of making science and technology and semiconductor technology, led light source becomes by force the substitute of conventional light source day by day with its little power consumption, brightness.
But led light source is limit by self character, and angle of radiation is very large, easily diffusion.When using led light source, need to 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 light emitting anger, and very little (spending less than 5 such as light emitting anger) need to do the reflector size larger, otherwise the light that the led light source light emitting anger is less can't be utilized, cause the final light emitting anger of led light source larger, waste simultaneously a large amount of manufactured materials.Also have and adopt convex lens that led light source is carried out optically focused, but the larger light of this mode LED light emitting anger 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, light emitting anger 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, the first end face middle part that diameter is less caves inward and forms a light source accommodating cavity for adaptive accommodating led light source, and the second end face middle part that described collector lens diameter is larger caves inward and forms convex surface towards the protruding sphere of described the second end face; 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 BSA00000212456600021
Extremely
Figure BSA00000212456600022
Wherein, n is the collector lens refractive index.
Preferably, described protruding spherical radius is R, and R satisfies:
1/R＝1/[(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 6mm 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 the first end face to the second end face of described collector lens: the first line segment, the 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,
The first line segment, satisfy with the lens axis angulation:
Figure BSA00000212456600023
The second line segment, satisfy with the lens axis angulation:
Figure BSA00000212456600024
The 3rd line segment, satisfy with the lens axis angulation:
Figure BSA00000212456600025
The 4th line segment, satisfy with the lens axis angulation:
Figure BSA00000212456600026
The 5th line segment, satisfy with the lens axis angulation:
Figure BSA00000212456600027
The 6th line segment, satisfy with the lens axis angulation:
Figure BSA00000212456600028
The 7th line segment, satisfy with the lens axis angulation:
Figure BSA00000212456600029
The 8th line segment, satisfy with the lens axis angulation:
Figure BSA000002124566000210
The 9th line segment, satisfy with the lens axis angulation:
Figure BSA000002124566000211
The tenth line segment, satisfy with the lens axis angulation:
Figure BSA00000212456600031
The 11 line segment, satisfy with the lens axis angulation:
Figure BSA00000212456600032
The 12 line segment, satisfy with the lens axis angulation:
Figure BSA00000212456600033
The 13 line segment, satisfy with the lens axis angulation:
Figure BSA00000212456600034
Preferably,
The first line segment and lens axis angulation are 45.00 °;
The second line segment and lens axis angulation are 43.43 °;
The 3rd line segment and lens axis angulation are 41.87 °;
The 4th line segment and lens axis angulation are 40.32 °;
The 5th line segment and lens axis angulation are 38.79 °;
The 6th line segment and lens axis angulation are 37.30 °;
The 7th line segment and lens axis angulation are 35.84 °;
The 8th line segment and lens axis angulation are 34.43 °;
The 9th line segment and lens axis angulation are 33.08 °;
The tenth line segment and lens axis angulation are 31.80 °;
The 11 line segment and lens axis angulation are 30.60 °;
The 12 line segment and lens axis angulation are 29.50 °;
The 13 line segment and lens axis angulation are 28.50 °.
Preferably, described light source accommodating cavity is the column type accommodating cavity.
Preferably, described light source accommodating cavity diameter is 3mm.
Preferably, the material of described collector lens adopts Merlon or polymethyl methacrylate.
A kind of light fixture that comprises collector lens described above.
Above-mentioned collector lens and the light fixture that uses this collector lens, the first end face middle part caves inward and forms the light source accommodating cavity, the second end face middle part caves inward and forms convex surface towards the protruding sphere of the second end face, sidewall is fully reflecting surface, the bus of circular platform type lens is broken line, bus is in turn connected to form by the multistage line segment, and multistage line segment and lens axis angulation are
Figure BSA00000212456600041
Extremely
Figure BSA00000212456600042
To led light source at any angle light carry out optically focused, take full advantage of led light source light, and make collector lens emergent ray light emitting anger less than 5 the degree, improved greatly spotlight effect.
[description of drawings]
Fig. 1 is concentrator lens structure profile among the embodiment;
Fig. 2 is concentrator lens structure top view among the embodiment;
Fig. 3 is concentrator 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, and the first end face middle part that diameter is less caves inward and forms a light source accommodating cavity that is used for adaptive accommodating led light source; The second end face middle part that diameter is larger caves inward and forms convex surface towards the protruding sphere of the second end face; 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 is around the sidewall of lens axis rotating 360 degrees formation collector lens, and multistage line segment and lens axis angulation are
Figure BSA00000212456600043
Extremely
Figure BSA00000212456600044
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 concentrator lens structure profile among the embodiment.Fig. 2 is concentrator lens structure top view among the embodiment.Fig. 3 is concentrator 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 the first end face 100, the second end face 200 and the sidewall 300 that connects the first end face 100 and the second end face 200.
The first end face 100 middle parts cave inward and form light source accommodating cavity 110, and light source accommodating cavity 110 is the column type accommodating cavity, and side 111 is the face of cylinder, and bottom surface 112 is the plane.Led light source light through the side 111 and bottom surface 112 enter to inject collector lens.Among this embodiment, light source accommodating 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.
The second end face 200 is exit facet, and its middle part caves inward and forms convex surface towards the protruding sphere 210 of the second end face 200.Protruding sphere 210 radiuses are R.If the sphere summit of protruding sphere 210 (being the intersection point of protruding sphere 210 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/[(n-1)L]
Sidewall 300 is fully reflecting surface, and the light of led light source incident is carried out total reflection so that light after total reflection with lens axis 400 near parallel outgoing.Sidewall 300 is formed around lens axis 400 rotating 360 degrees by the bus 500 of circular platform type collector lens.Bus 500 is broken line, is in turn connected to form by the multistage line segment.Among this embodiment, bus 500 is in turn connected to form by 13 sections line segments, is respectively by the first end face 100 to second end faces 200:
The first line segment 501, satisfy with lens axis 400 angulations:
Figure BSA00000212456600051
The second line segment 502, satisfy with lens axis 400 angulations:
Figure BSA00000212456600052
The 3rd line segment 503, satisfy with lens axis 400 angulations:
Figure BSA00000212456600053
The 4th line segment 504, satisfy with lens axis 400 angulations:
Figure BSA00000212456600054
The 5th line segment 505, satisfy with lens axis 400 angulations:
Figure BSA00000212456600061
The 6th line segment 506, satisfy with lens axis 400 angulations:
Figure BSA00000212456600062
The 7th line segment 507, satisfy with lens axis 400 angulations:
Figure BSA00000212456600063
The 8th line segment 508, satisfy with lens axis 400 angulations:
Figure BSA00000212456600064
The 9th line segment 509, satisfy with lens axis 400 angulations:
Figure BSA00000212456600065
The tenth line segment 510, satisfy with lens axis 400 angulations:
Figure BSA00000212456600066
The 11 line segment 511, satisfy with lens axis 400 angulations:
Figure BSA00000212456600067
The 12 line segment 512, satisfy with lens axis 400 angulations:
Figure BSA00000212456600068
The 13 line segment 513, satisfy with lens axis 400 angulations:
Figure BSA00000212456600069
In a preferred embodiment, these collector lens refractive index n=1.59, the distance L=6mm at led light source center is arrived on the sphere summit of protruding sphere 210, radius R=3.54mm, the diameter D=3mm of light source accommodating cavity 110, then:
The first line segment 501 is 45.00 ° with lens axis 400 angulations;
The second line segment 502 is 43.43 ° with lens axis 400 angulations;
The 3rd line segment 503 is 41.87 ° with lens axis 400 angulations;
The 4th line segment 504 is 40.32 ° with lens axis 400 angulations;
The 5th line segment 505 is 38.79 ° with lens axis 400 angulations;
The 6th line segment 506 is 37.30 ° with lens axis 400 angulations;
The 7th line segment 507 is 35.84 ° with lens axis 400 angulations;
The 8th line segment 508 is 34.43 ° with lens axis 400 angulations;
The 9th line segment 509 is 33.08 ° with lens axis 400 angulations;
The tenth line segment 510 is 31.80 ° with lens axis 400 angulations;
The 11 line segment 511 is 30.60 ° with lens axis 400 angulations;
The 12 line segment 512 is 29.50 ° with lens axis 400 angulations;
The 13 line segment 513 is 28.50 ° 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 accommodating cavity 110.The light that the angle that led light source sends is less, after the refraction through bottom surface 112 and protruding sphere 210, emergent ray and lens axis 400 are near parallel.Led light source sends the larger 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 the second end face.After measured, this collector lens emergent ray light emitting anger is less than 5 degree, and spotlight effect is good.Simultaneously, be the plane partly in addition in the middle of the second end face 200, effectively reduce 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 collector lens described above; As required, this light fixture can comprise the above-mentioned collector lens that two above same level distribution rules arrange, and as shown in Figure 6, this light fixture comprises 3 above-mentioned collector lenses, 3 collector lenses are the 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, the first end face middle part caves inward and forms the light source accommodating cavity, the second end face middle part caves inward and forms convex surface towards the protruding sphere of the second end face, sidewall is fully reflecting surface, circular platform type lens bus is broken line, bus is in turn connected to form by the multistage line segment, and multistage line segment and lens axis angulation are
Figure BSA00000212456600071
Extremely
Figure BSA00000212456600072
To led light source at any angle light carry out optically focused, take full advantage of led light source light, and make collector lens emergent ray light emitting anger less than 5 the degree, improved greatly spotlight effect.
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 (4)

1. collector lens, it is characterized in that, described collector lens is with the axisymmetric circular platform type lens of lens light, the first end face middle part that diameter is less caves inward and forms a light source accommodating cavity for adaptive accommodating led light source, and the second end face middle part that described collector lens diameter is larger caves inward and forms convex surface towards the protruding sphere of described the second end face; 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 FDA00002536234600011
Extremely
Figure FDA00002536234600012
Wherein, n is the collector lens refractive index;
Described protruding spherical radius is R, and R satisfies:
1/R=1/[（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 the first end face to the second end face of described collector lens: the first line segment, the 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;
The first line segment, satisfy with the lens axis angulation:
The second line segment, satisfy with the lens axis angulation:
The 3rd line segment, satisfy with the lens axis angulation:
Figure FDA00002536234600015
The 4th line segment, satisfy with the lens axis angulation:
Figure FDA00002536234600016
The 5th line segment, satisfy with the lens axis angulation:
Figure FDA00002536234600017
The 6th line segment, satisfy with the lens axis angulation:
Figure FDA00002536234600018
The 7th line segment, satisfy with the lens axis angulation:
Figure FDA00002536234600019
The 8th line segment, satisfy with the lens axis angulation:
The 9th line segment, satisfy with the lens axis angulation:
Figure FDA000025362346000111
The tenth line segment, satisfy with the lens axis angulation:
Figure FDA000025362346000112
The 11 line segment, satisfy with the lens axis angulation:
Figure FDA00002536234600021
The 12 line segment, satisfy with the lens axis angulation:
Figure FDA00002536234600022
The 13 line segment, satisfy with the lens axis angulation:
Figure FDA00002536234600023
Described light source accommodating cavity is the column type accommodating cavity; The side is the face of cylinder, and the bottom surface is the plane;
Described light source accommodating cavity diameter is 3mm;
The material of described collector lens adopts Merlon or polymethyl methacrylate.
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 6mm 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,
The first line segment and lens axis angulation are 45.00 °;
The second line segment and lens axis angulation are 43.43 °;
The 3rd line segment and lens axis angulation are 41.87 °;
The 4th line segment and lens axis angulation are 40.32 °;
The 5th line segment and lens axis angulation are 38.79 °;
The 6th line segment and lens axis angulation are 37.30 °;
The 7th line segment and lens axis angulation are 35.84 °;
The 8th line segment and lens axis angulation are 34.43 °;
The 9th line segment and lens axis angulation are 33.08 °;
The tenth line segment and lens axis angulation are 31.80 °;
The 11 line segment and lens axis angulation are 30.60 °;
The 12 line segment and lens axis angulation are 29.50 °;
The 13 line segment and lens axis angulation are 28.50 °.
4. light fixture that comprises the arbitrary described collector lens of claims 1 to 3 that two above same level distribution rules arrange.
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