CN104534329A - LED remote illumination optical alignment system - Google Patents

LED remote illumination optical alignment system Download PDF

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Publication number
CN104534329A
CN104534329A CN201410840539.8A CN201410840539A CN104534329A CN 104534329 A CN104534329 A CN 104534329A CN 201410840539 A CN201410840539 A CN 201410840539A CN 104534329 A CN104534329 A CN 104534329A
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CN
China
Prior art keywords
led
spherical lens
light source
optical alignment
alignment system
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Granted
Application number
CN201410840539.8A
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Chinese (zh)
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CN104534329B (en
Inventor
金志樑
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Suzhou Institute of Biomedical Engineering and Technology of CAS
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Suzhou Institute of Biomedical Engineering and Technology of CAS
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Priority to CN201410840539.8A priority Critical patent/CN104534329B/en
Publication of CN104534329A publication Critical patent/CN104534329A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Lenses (AREA)

Abstract

The invention discloses an LED remote illumination optical alignment system which comprises an LED surface light source, an aspherical lens and a Fresnel lens, wherein the aspherical lens is located between the LED surface light source and the Fresnel lens; the centers of the LED surface light source, the aspherical lens and the Fresnel lens are collinear; the distance between the LED surface light source and the aspherical lens is 0-10 mm, and the distance between the aspherical lens and the Fresnel lens is 100-1000 mm; with the adoption of the LED remote illumination optical alignment system, the light beam divergence angle can be controlled to minimum, the light source alignment effect and the utilization ratio are high, the system can be used for alignment of an LED surface source light with a large area, and long distance and high brightness lighting work is realized.

Description

LED remote illumination optical alignment system
Technical field
The present invention relates to a kind of illumination system of lighting field, specifically, relate to a kind of LED remote illumination optical alignment system.
Background technology
LED, as a kind of New Solid lighting source, owing to having energy-conservation, the outstanding advantages such as start-up time is short, security is high, the life-span is long, environmental protection, thus obtains at lighting field in recent years and applies comparatively widely.Along with the appearance of great power LED, remote outdoor searchlight certainly will by one of development trend becoming lighting field.
The diverging light of LED remote illumination optical alignment system to LED area light source collimates, and makes target area illuminance reach the requirement of expection.Current most LED light colimated light system, because its structure only comprises the structure of LED area light source and non-spherical lens, by means of only the improvement on mirror surface structure, can only realize closely throwing light on, and the LED area light source be suitable for also has larger restriction.And for large area LED area source, the light efficiency utilization rate of its colimated light system is low, the rear beam divergence angle of collimation is bigger than normal, thus be difficult to realize long distance illumination.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of light efficiency utilization rate high, after collimation, the angle of divergence of light beam is little, can be applied to the LED remote illumination optical alignment system of large area LED area source remote illumination.
For achieving the above object, technical scheme of the present invention is as follows: LED remote illumination optical alignment system, and comprise LED area light source, non-spherical lens and Fresnel Lenses, described non-spherical lens is between described LED area light source and Fresnel Lenses; The center conllinear of described LED area light source, non-spherical lens and Fresnel Lenses; The distance of described LED area light source and described non-spherical lens is 0-10mm, and the distance of described non-spherical lens and described Fresnel Lenses is 100-1000mm.
Adopt technique scheme, the beneficial effect of technical solution of the present invention is: in this optical alignment system, the distance of the light-emitting area of non-spherical lens and LED area light source can be made to be less than the focal length of non-spherical lens, thus non-spherical lens can receive the luminous energy of more than 95%, and by the light beam after non-spherical lens, collimate through Fresnel Lenses, the angle of divergence of the light beam that LED area light source can be sent controls within 1.5 °, the i.e. collimation that can be applied to large area LED area source of this optical alignment system, realize remote illumination work, and luminosity is higher.
On the basis of technique scheme, the present invention also can do following improvement:
As preferred scheme, the one side of described non-spherical lens is plane, and its another side is aspheric surface, and described LED area light source is arranged at the planar side of described non-spherical lens.
Adopt above-mentioned preferred scheme, planar side, near LED area light source, can improve the utilization rate of luminous energy, reduces the loss of reflecting and bringing, also can better compression light beam angle.
As preferred scheme, described non-spherical lens comprising lens body, connecting the microscope base of described lens body and the support for installing described microscope base, and described microscope base is threaded described support.
Adopt above-mentioned preferred scheme, adopt between microscope base and support and be threaded, be convenient to install, and can regulate the position of lens body easily, thus regulate the distance between non-spherical lens and LED area light source, make the collimating effect of final light beam better.
As preferred scheme, between described lens body and described microscope base, be provided with trim ring.
Adopt above-mentioned preferred scheme, the setting of trim ring, enhance the bonding strength of microscope base and lens body, lens body not easily loosens.
As preferred scheme, be also provided with securing member between described support and microscope base, described securing member is jackscrew.
Adopt above-mentioned preferred scheme, the setting of jackscrew, can strengthen the bonding strength between support and microscope base, the position after microscope base is connected with support is fixed by jackscrew, not easily loosens during work, and can facilitate the link position of regulating lens holder and support.
As preferred scheme, the number of described non-spherical lens is at least two.
Adopt above-mentioned preferred scheme, the spherical aberration that non-spherical lens brings in alignment procedure can be revised, and then while simplied system structure, improve the transmitance of light.
As preferred scheme, the number of described Fresnel Lenses is at least two.
Adopt above-mentioned preferred scheme, Fresnel Lenses luminous flux is high, lightweight, uses material few, and is easier to framework and goes out large-scale beam condensing unit.
As preferred scheme, the distance L between described Fresnel Lenses and described LED light source is by the focal distance f of himself 1with the focal distance f by described non-spherical lens 2determine, its relational expression met is L=f 2-f 1 2/ (d 1-d/n), wherein d 1for the distance of LED area light source and non-spherical lens, d is the thickness of non-spherical lens, and n is the refractive index of non-spherical lens.
Adopt above-mentioned preferred scheme, can regulate non-spherical lens and the distance between Fresnel Lenses and LED area light source, and degree of regulation is higher, thus improve the beam utilization of colimated light system.
As preferred scheme, the focal length of described non-spherical lens is 10-50mm.
Adopt above-mentioned preferred scheme, most of light source of LED area light source can be received, thus improve beam utilization and the collimation efficiency of this colimated light system.
As preferred scheme, the focal length of described Fresnel Lenses is 100-1000mm.
Adopt above-mentioned preferred scheme, the collimating effect of the light beam after non-spherical lens is focused on is better.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in embodiment of the present invention technology, be briefly described to the accompanying drawing used required in the description of embodiment technology below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is one of structural representation of a kind of LED remote illumination of the present invention optical alignment system;
Fig. 2 is the structural representation two of a kind of LED remote illumination of the present invention optical alignment system;
Fig. 3 is the structural representation three of a kind of LED remote illumination of the present invention optical alignment system;
Fig. 4 is the scheme of installation of LED area light source and non-spherical lens in a kind of LED remote illumination of the present invention optical alignment system;
Fig. 5 is the dissipating effect figure of light source in a kind of LED remote illumination of the present invention optical alignment system.
Wherein, 1, LED area light source, 2, non-spherical lens, 21, lens body, 22, microscope base, 23, support, 24, trim ring, 25, jackscrew, 3, Fresnel Lenses.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In order to reach object of the present invention, as shown in Figure 1, shown in Figure 5, in some embodiments of LED remote illumination optical alignment system of the present invention, it comprises LED area light source 1, non-spherical lens 2 and Fresnel Lenses 3, and non-spherical lens 2 is between LED area light source 1 and Fresnel Lenses 3; The center conllinear of LED area light source 1, non-spherical lens 2 and Fresnel Lenses 3; LED area light source 1 is 0-10mm with the distance of non-spherical lens 2, and non-spherical lens 2 is 100-1000mm with the distance of Fresnel Lenses 3.The light that LED area light source 1 sends meets lambertian distribution, light beam evenly.Wherein, the number of non-spherical lens 2 and Fresnel Lenses 3 is one, the angle of divergence of light beam can be compressed to 50-80 ° by non-spherical lens 2, by the angle of compression and the focal length of Fresnel Lenses 3, the diameter of Fresnel Lenses 3 can be determined, afterwards according to the diameter value after determining, select Fresnel Lenses, finally the angle of divergence of light beam can be compressed to 1 °, the illumination distances of LED light source reaches 2km.Diameter due to Fresnel Lenses determines the diameter of lighting device, and the model machine basic configuration of lighting device is oil drum shape, and the size diameter of lighting device is determined by the diameter of Fresnel Lenses 3, and the length of lighting device is determined by the focal length of Fresnel Lenses 3.
Adopt technique scheme, the beneficial effect of technical solution of the present invention is: in this optical alignment system, non-spherical lens 2 can be made to be less than the focal length of non-spherical lens 2 with the distance of the light-emitting area of LED area light source 1, thus non-spherical lens 2 can receive the luminous energy of more than 95%, and by the light beam after non-spherical lens 2, collimate through Fresnel Lenses 3, the angle of divergence of the light beam that LED area light source 1 can be sent controls within 1.5 °, the i.e. collimation that can be applied to large area LED area source 1 of this optical alignment system, realize remote illumination work, and luminosity is higher.
Wherein, in the above-described embodiment, during experimental test, distance between non-spherical lens 2 and LED area light source is 0-10mm, Fresnel Lenses 3 is 100-1010mm with the distance of LED area light source, and launch in above scope, it comprises with the embodiment 1-5 shown in following table and comparative example.
Passable as apparent from upper table, six embodiments in present embodiment, by the combining structure of non-spherical lens and Fresnel Lenses, compared to prior art, the angle of divergence of light beam obviously diminishes, and its illumination distances is also farther.
On the basis of technique scheme, the present invention also can do following improvement:
In order to optimize implementation result of the present invention further, in the other embodiment of LED remote illumination optical alignment system of the present invention, the one side of non-spherical lens 2 is planes, and its another side is aspheric surface, and LED area light source is arranged at the planar side of non-spherical lens.
Adopt above-mentioned preferred scheme, planar side, near LED area light source, can improve the utilization rate of luminous energy, reduces the loss of reflecting and bringing, also can better compression light beam angle.
In order to optimize implementation result of the present invention further, as shown in Figure 4, in the other embodiment of LED remote illumination optical alignment system of the present invention, non-spherical lens comprising lens body 21, connecting the microscope base 22 of lens body 21 and the support 23 for installing microscope base 22, and microscope base 22 is threaded support 23.
Adopt above-mentioned preferred scheme, adopt between microscope base 22 and support 23 and be threaded, be convenient to install, and can regulate the position of lens body 21 easily, thus regulate the distance between non-spherical lens 2 and LED area light source, make the collimating effect of final light beam better.
In order to optimize implementation result of the present invention further, as shown in Figure 4, in the other embodiment of LED remote illumination optical alignment system of the present invention, between lens body 21 and microscope base 22, be provided with trim ring 24.
Adopt above-mentioned preferred scheme, the setting of trim ring 24, enhance the bonding strength of microscope base 22 and lens body 21, lens body 21 not easily loosens.
In order to optimize implementation result of the present invention further, as shown in Figure 4, in the other embodiment of LED remote illumination optical alignment system of the present invention, be also provided with securing member 25 between support 23 and microscope base 22, securing member 25 is jackscrew.
Adopt above-mentioned preferred scheme, the setting of jackscrew, can strengthen the bonding strength between support 23 and microscope base 22, and the position after microscope base 22 is connected with support 23 is fixed by jackscrew, not easily loosen during work, and the link position of regulating lens holder 22 and support 23 can be facilitated.
In order to optimize implementation result of the present invention further, as shown in Figure 2, in the other embodiment of LED remote illumination optical alignment system of the present invention, the number of non-spherical lens 2 is two.Wherein, the angle of divergence of light beam can be compressed to 30-80 ° by non-spherical lens 2, by the angle of compression and the focal length of Fresnel Lenses 3, the diameter of Fresnel Lenses 3 can be determined, afterwards according to the diameter value after determining, select Fresnel Lenses, finally the angle of divergence of light beam can be compressed to 1 °, the illumination distances of LED light source reaches 2km.
Adopt above-mentioned preferred scheme, the spherical aberration that non-spherical lens brings in alignment procedure can be revised, and then while simplied system structure, improve the transmitance of light.
In order to optimize implementation result of the present invention further, as shown in Figure 3, in the other embodiment of LED remote illumination optical alignment system of the present invention, the number of Fresnel Lenses 3 is two.
Adopt above-mentioned preferred scheme, Fresnel Lenses luminous flux is high, lightweight, uses material few, and is easier to framework and goes out large-scale beam condensing unit.
In order to optimize implementation result of the present invention further, in the other embodiment of LED remote illumination optical alignment system of the present invention, Fresnel Lenses 3 and distance L between LED light source 1 by himself focal distance f 1with the focal distance f by non-spherical lens 2determine, its relational expression met is L=f 2-f 1 2/ (d 1-d/n), wherein d 1for the distance of LED area light source and non-spherical lens, d is the thickness of non-spherical lens, and n is the refractive index of non-spherical lens.
Adopt above-mentioned preferred scheme, can regulate non-spherical lens and the distance between Fresnel Lenses 3 and LED area light source 1, and degree of regulation is higher, thus improve the beam utilization of colimated light system.
In order to optimize implementation result of the present invention further, in the other embodiment of LED remote illumination optical alignment system of the present invention, the focal length of non-spherical lens 2 is 10-50mm.
Adopt above-mentioned preferred scheme, most of light source of LED area light source 1 can be received, thus improve beam utilization and the collimation efficiency of this colimated light system.
In order to optimize implementation result of the present invention further, in the other embodiment of LED remote illumination optical alignment system of the present invention, the focal length of Fresnel Lenses 3 is 100-1000mm.
Adopt above-mentioned preferred scheme, the collimating effect of the light beam after non-spherical lens 2 is focused on is better.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (10)

1.LED remote illumination optical alignment system, is characterized in that, comprise LED area light source, non-spherical lens and Fresnel Lenses, described non-spherical lens is between described LED area light source and Fresnel Lenses; The center conllinear of described LED area light source, non-spherical lens and Fresnel Lenses; The distance of described LED area light source and described non-spherical lens is 0-10mm, and the distance of described non-spherical lens and described Fresnel Lenses is 100-1000mm.
2. LED remote illumination optical alignment system according to claim 1, it is characterized in that, the one side of described non-spherical lens is plane, and its another side is aspheric surface, and described LED area light source is arranged at the planar side of described non-spherical lens.
3. LED remote illumination optical alignment system according to claim 2, is characterized in that, described non-spherical lens comprising lens body, connecting the microscope base of described lens body and the support for installing described microscope base, and described microscope base is threaded described support.
4. LED remote illumination optical alignment system according to claim 3, is characterized in that, be provided with trim ring between described lens body and described microscope base.
5. LED remote illumination optical alignment system according to claim 4, it is characterized in that, be also provided with securing member between described support and microscope base, described securing member is jackscrew.
6. the LED remote illumination optical alignment system according to claim 1-5, it is characterized in that, the number of described non-spherical lens is at least two.
7. the LED remote illumination optical alignment system according to claim 1-5, it is characterized in that, the number of described Fresnel Lenses is at least two.
8. the LED remote illumination optical alignment system according to claim 1-5, it is characterized in that, the distance L between described Fresnel Lenses and described LED light source is by the focal distance f of himself 1with the focal distance f by described non-spherical lens 2determine, its relational expression met is L=f 2-f 1 2/ (d 1-d/n), wherein d 1for the distance of LED area light source and non-spherical lens, d is the thickness of non-spherical lens, and n is the refractive index of non-spherical lens.
9. LED remote illumination optical alignment system according to claim 8, is characterized in that, the focal length of described non-spherical lens is 10-50mm.
10. LED remote illumination optical alignment system according to claim 8, is characterized in that, the focal length of described Fresnel Lenses is 100-1000mm.
CN201410840539.8A 2014-12-30 2014-12-30 LED remote illumination optical alignment system Active CN104534329B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106907593A (en) * 2015-12-23 2017-06-30 欧普照明股份有限公司 A kind of Optical devices and lighting device

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Publication number Priority date Publication date Assignee Title
US20020051108A1 (en) * 1996-09-30 2002-05-02 Kazuo Shimura Image display system
CN201237156Y (en) * 2008-07-29 2009-05-13 红蝶科技(深圳)有限公司 LED light source and liquid crystal projection equipment employing the same
CN201487836U (en) * 2009-05-17 2010-05-26 王新成 Push-and-pull lens cone type zooming LED lamp cap
KR101113739B1 (en) * 2011-04-01 2012-02-27 (주) 파루 Inspecting apparatus for concentrating photo voltaic condensing lens
CN202274357U (en) * 2011-09-20 2012-06-13 飞利浦(中国)投资有限公司 Led lamp
CN204403835U (en) * 2014-12-30 2015-06-17 中国科学院苏州生物医学工程技术研究所 LED remote illumination optical alignment system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020051108A1 (en) * 1996-09-30 2002-05-02 Kazuo Shimura Image display system
CN201237156Y (en) * 2008-07-29 2009-05-13 红蝶科技(深圳)有限公司 LED light source and liquid crystal projection equipment employing the same
CN201487836U (en) * 2009-05-17 2010-05-26 王新成 Push-and-pull lens cone type zooming LED lamp cap
KR101113739B1 (en) * 2011-04-01 2012-02-27 (주) 파루 Inspecting apparatus for concentrating photo voltaic condensing lens
CN202274357U (en) * 2011-09-20 2012-06-13 飞利浦(中国)投资有限公司 Led lamp
CN204403835U (en) * 2014-12-30 2015-06-17 中国科学院苏州生物医学工程技术研究所 LED remote illumination optical alignment system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106907593A (en) * 2015-12-23 2017-06-30 欧普照明股份有限公司 A kind of Optical devices and lighting device

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