CN203309779U - Light collimation device and big train LED lamp using same - Google Patents
Light collimation device and big train LED lamp using same Download PDFInfo
- Publication number
- CN203309779U CN203309779U CN2013200351583U CN201320035158U CN203309779U CN 203309779 U CN203309779 U CN 203309779U CN 2013200351583 U CN2013200351583 U CN 2013200351583U CN 201320035158 U CN201320035158 U CN 201320035158U CN 203309779 U CN203309779 U CN 203309779U
- Authority
- CN
- China
- Prior art keywords
- fresnel
- fresnel lenses
- light
- free form
- reflector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The utility model discloses a light collimation device and a big train LED lamp using the light collimation device. The light collimation device is composed of one or more Fresnel lenses located on the same plane or the same spherical surface. The upper surface of each Fresnel lens is a Fresnel surface. The light collimation device is characterized in that a central small-angle region of each Fresnel lens is of transmission design, and a big-angle region is of total reflection design. The big train LED lamp using the light collimation device is composed of an LED chip array, a Fresnel lens array and a reflection cup. The LED chip array is composed of one or more LED chips located on the same plane or the same spherical surface; the Fresnel lens array is composed of one or more Fresnel lenses located on the same plane or the same spherical surface, and the position of each Fresnel lens corresponds to one LED chip; the upper surface of each Fresnel lens is a Fresnel surface; the LED chip array is close to the lower surface of the Fresnel lens array; the reflection cup surrounds the Fresnel lens array; emergent light, with the emergent angle larger than A, of the reflection cup to a front-end light source is further collimated; the big train LED lamp is characterized by further comprising a remote fluorescence sheet; the LED chip array, the Fresnel lens array and the remote fluorescence sheet are sequentially arranged; the reflection cup also surrounds the remote fluorescence sheet.
Description
Technical field
This is novel relates to a kind of a kind of LED train headlight that changes the device of LED light source direction and apply it.Concrete referring to utilizes the combination of Fei Nier lens arra and reflector to carry out collimated ray, and it is applied in the railroad train headlight.
Background technology
" LED green illumination and nonimaging optics design thereof " proposed a kind of LED projection illumination system in (" physics circular " the 2nd phase in 2012), the light source far-field distribution that need to have efficiently, collimate now, for example, automobile front, train headlight, flashlight etc.Concrete thought is that front end adopts LED chip, and rear end adopts reflector and the combination of free form surface Fresnel lens to carry out the light collimation.This paper proposes to adopt low-angle light to utilize Fresnel lens to collimate, and the light of wide-angle adopts free form surface reflector collimation, the final collimated illumination met the demands that obtains.But in train headlight application in practice, this mode still can not make light that very little dispersion angle is arranged when carrying out remote illumination, and can cause a part of LED light can't produce enough long-range illumination from system, spilling.
Summary of the invention
Main purpose of the present invention is a kind of light collimator apparatus of design, focuses on more accurately, makes the parallel ejaculation of light beam with long drive performance, minimizing light scattering, the order that improves LED.Another object of the present invention is that design is a still has good illumination, light that the seldom LED train headlight of dispersion angle is arranged long-range.
For achieving the above object, basic ideas of the present invention are as follows:
A kind of light collimator apparatus, by 1 or a plurality of Fresnel Lenses be positioned on same plane or sphere, formed, the upper surface of described Fresnel Lenses is Fresnel surface, it is characterized in that described Fresnel Lenses adopts center low-angle zone transmission, and wide-angle region total reflection design.
Preferably, it is characterized in that the critical angle of described each Fresnel Lenses transmission and reflection is A, the span 35-55 degree of A, namely front end light source emergent ray is less than can seeing through by transmissive portion of A, is more than or equal to the light of A by the reflecting part outgoing.
Preferably, described light collimator apparatus also comprises a reflector, it is characterized by described reflector and surrounds described fresnel lens array, and described reflector further collimates the light that is more than or equal to A in front end light source emergent ray.
Preferably, each Fresnel surface zone of described Fresnel Lenses is free form surface, and the reflecting part of described Fresnel Lenses is also free form surface.
Preferably, the free form surface that the Fresnel surface of described Fresnel Lenses adopts can be sphere, ellipsoid, parabola, hyperboloid, aspheric surface, and Rotational Symmetry curved surface.
Preferably, described free form surface meets equation
, it is rotational symmetric that this type both can have been made, and can make again asymmetrical.
A kind of LED train headlight, by the LED chip array, fresnel lens array and reflector form, described LED chip array is comprised of 1 or a plurality of LED chip be positioned on same plane or sphere, described fresnel lens array is comprised of 1 or a plurality of Fresnel Lenses be positioned on same plane or sphere, and described each Fresnel Lenses is in position corresponding to a described LED chip, the upper surface of described Fresnel Lenses is Fresnel surface, described LED chip array is near the lower surface of described fresnel lens array, described reflector surrounds described fresnel lens array.It is characterized in that described LED headlight also comprises the remote fluorescence sheet, described LED chip array, fresnel lens array and remote fluorescence sheet are arranged in parallel successively, and described reflector has also surrounded described remote fluorescence sheet.
Preferably, described Fresnel Lenses adopts center low-angle zone transmission, and wide-angle region total reflection design.
Preferably, the critical angle of described each Fresnel Lenses transmission and reflection is A, the span 35-55 degree of A, and namely front end light source emergent ray is less than can seeing through by transmissive portion of A, is more than or equal to the light of A by the reflecting part outgoing; Described reflector further collimates the light that is more than or equal to A in front end light source emergent ray.
Preferably, described Fresnel Lenses adopts center low-angle zone transmission, and wide-angle region total reflection design.
Preferably, each Fresnel surface zone of described Fresnel Lenses is free form surface, and the reflecting part of described Fresnel Lenses is also free form surface.
Preferably, the free form surface that the Fresnel surface of described Fresnel Lenses adopts can be sphere, ellipsoid, parabola, hyperboloid, aspheric surface, and Rotational Symmetry curved surface.
Preferably, described free form surface meets equation
, it is rotational symmetric that this type both can have been made, and can make again asymmetrical.
Preferably, the fluorescent material of described remote fluorescence sheet is to be coated in a substrate, has formed described remote fluorescence sheet.
Preferably, the face type of the reflective surface of described reflector is free form surface.
Preferably, the face type of the reflective surface of described reflector is free form surface, it is characterized in that described free form surface meets equation
, it is rotational symmetric that this type both can have been made, and can make again asymmetrical.
Preferably, the light-emitting window of described reflector is placed a circular shadow shield.
Preferably, the outer bore of the outlet of described shadow shield outer shroud bore and reflector equates, the interior ring diameter of described shadow shield is than the little 4-10mm of outer bore.
After adopting this programme, the luminous intensity distribution design that this light colimated light system is special, make the divergence of beam angle very little.This train headlight has guaranteed enough long-range illumination in addition, has adopted simultaneously the remote fluorescence technology, can prevent effectively that the fuel factor due to LED from causing the performance change of fluorescent material, thereby the colour temperature caused changes.
The accompanying drawing explanation
Fig. 1 LED train headlight side sectional view
Fig. 2 LED train headlight front view
---LED chip array, 2---fresnel lens array, 3---reflector, 4---remote fluorescence sheet, 5---shadow shield wherein: 1
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and reality
Execute example, the present invention is further elaborated.Only should be appreciated that specific embodiment described herein
Only, in order to explain the present invention, be not intended to limit the present invention.
The invention discloses a kind of light collimator apparatus, by 1 or a plurality of Fresnel Lenses be positioned on same plane or sphere, formed, the upper surface of described Fresnel Lenses is Fresnel surface, it is characterized in that described Fresnel Lenses adopts center low-angle zone transmission, and wide-angle region total reflection design.The critical angle of described each Fresnel Lenses transmission and reflection is A, the span 35-55 degree of A, and namely front end light source emergent ray is less than can seeing through by transmissive portion of A, is more than or equal to the light of A by the reflecting part outgoing.Described light collimator apparatus also comprises a reflector, it is characterized by described reflector and surrounds described fresnel lens array, and described reflector further collimates the light that is more than or equal to A in front end light source emergent ray.
Each Fresnel surface zone of described Fresnel Lenses is free form surface, and the reflecting part of described Fresnel Lenses is also free form surface.The free form surface that the Fresnel surface of described Fresnel Lenses adopts can be sphere, ellipsoid, parabola, hyperboloid, aspheric surface, and Rotational Symmetry curved surface.Described free form surface meets equation
, it is rotational symmetric that this type both can have been made, and can make again asymmetrical.
As shown in Figure 1, the invention also discloses a kind of LED train headlight, by the LED chip array 1 minute be packaged together and fresnel lens array 2 and reflector 3, formed, described LED chip array 1 is comprised of 1 or a plurality of LED chip be positioned on same plane or sphere, described fresnel lens array 2 is comprised of 1 or a plurality of Fresnel Lenses be positioned on same plane or sphere, and described each Fresnel Lenses is in position corresponding to a described LED chip, the upper surface of described Fresnel Lenses is Fresnel surface, described LED chip array 1 is packaged together into as a whole near the lower surface 2 and 2 of described fresnel lens array, described reflector 3 surrounds described fresnel lens array 2.Described LED headlight also comprises remote fluorescence sheet 4, and described LED chip array 1, fresnel lens array 2 and remote fluorescence sheet 4 are arranged in parallel successively, and described reflector 3 has also surrounded described remote fluorescence sheet 4.Use remote fluorescence sheet 4 can avoid fluorescent material directly to be coated in fast, high to the uniformity requirement shortcoming of aging speed that the LED light source surface causes.
Described Fresnel Lenses adopts center low-angle zone transmission, and wide-angle region total reflection design.The critical angle of transmission and reflection is A, the span 35-55 degree of A, and namely front end light source emergent ray is less than can seeing through by transmissive portion of A, is more than or equal to the light of A by the reflecting part outgoing.The light that is more than or equal to A in 3 pairs of front end light source emergent raies of described reflector further collimates.
Each Fresnel surface zone of described Fresnel Lenses is free form surface, and the reflecting part of described Fresnel Lenses is also free form surface.The free form surface that the Fresnel surface of described Fresnel Lenses 1 adopts can be sphere, ellipsoid, parabola, hyperboloid, aspheric surface, and Rotational Symmetry curved surface.Described free form surface meets equation
, it is rotational symmetric that this type both can have been made, and can make again asymmetrical.
The fluorescent material of described remote fluorescence sheet 4 is to be coated in a substrate, has formed described remote fluorescence sheet.
The face type of the reflective surface of described reflector 3 is free form surfaces. it is characterized in that described free form surface meets equation
, it is rotational symmetric that this type both can have been made, and can make again asymmetrical.
The light-emitting window of described reflector 3 is placed a circular shadow shield 5.Filter the veiling glare in system, to avoid affecting the safety traffic of driving vehicle near track.The outer bore of the outlet of described shadow shield 5 outer shroud bores and reflector equates, the interior ring diameter of described shadow shield is than the little 4-10mm of outer bore.
Claims (10)
1. light collimator apparatus, by 1 or a plurality of Fresnel Lenses be positioned on same plane or sphere, formed, the upper surface of described Fresnel Lenses is Fresnel surface, it is characterized in that: described Fresnel Lenses adopts center low-angle zone transmission, and wide-angle region total reflection design.
2. light collimator apparatus according to claim 1, it is characterized in that: the critical angle of described each Fresnel Lenses transmission and reflection is A, the span 35-55 degree of A, be that front end light source emergent ray is less than can seeing through by transmissive portion of A, be more than or equal to the light of A by the reflecting part outgoing.
3. light collimator apparatus as claimed in claim 2, it is characterized by: described light collimator apparatus also comprises a reflector, it is characterized by described reflector and surround described fresnel lens array, described reflector further collimates the light that is more than or equal to A in front end light source emergent ray.
4. light collimator apparatus as claimed in claim 3, it is characterized in that: each Fresnel surface zone of described Fresnel Lenses is free form surface, the reflecting part of described Fresnel Lenses is also free form surface, the free form surface that the Fresnel surface of described Fresnel Lenses adopts can be sphere, ellipsoid, parabola, hyperboloid, aspheric surface, and Rotational Symmetry curved surface, the free form surface of the free form surface of described Fresnel Lenses reflecting part and the Fresnel surface of described Fresnel Lenses meets equation
, it is rotational symmetric that this type both can have been made, and can make again asymmetrical.
5. LED train headlight, by the LED chip array, fresnel lens array and reflector form, described LED chip array is comprised of 1 or a plurality of LED chip be positioned on same plane or sphere, described fresnel lens array is comprised of 1 or a plurality of Fresnel Lenses be positioned on same plane or sphere, and described each Fresnel Lenses is in position corresponding to a described LED chip, the upper surface of described Fresnel Lenses is Fresnel surface, described LED chip array is near the lower surface of described fresnel lens array, described reflector surrounds described fresnel lens array, it is characterized in that: described LED headlight also comprises the remote fluorescence sheet, described LED chip array, fresnel lens array and remote fluorescence sheet are arranged in parallel successively, described reflector has also surrounded described remote fluorescence sheet.
6. LED train headlight according to claim 5, is characterized in that: described Fresnel Lenses employing center low-angle zone transmission, and wide-angle region total reflection design.
7. LED train headlight according to claim 6, it is characterized in that: the critical angle of described each Fresnel Lenses transmission and reflection is A, the span 35-55 degree of A, be that front end light source emergent ray is less than can seeing through by transmissive portion of A, be more than or equal to the light of A by the reflecting part outgoing; Described reflector further collimates the light that is more than or equal to A in front end light source emergent ray.
8. LED train headlight according to claim 7, it is characterized in that: each Fresnel surface zone of described Fresnel Lenses is free form surface, the reflecting part of described Fresnel Lenses is also free form surface, the free form surface that the Fresnel surface of described Fresnel Lenses adopts can be sphere, ellipsoid, parabola, hyperboloid, aspheric surface, and Rotational Symmetry curved surface, the free form surface of the free form surface of described Fresnel Lenses reflecting part and the Fresnel surface of described Fresnel Lenses meets equation
, it is rotational symmetric that this type both can have been made, and can make again asymmetrical.
9. LED train headlight according to claim 8, it is characterized in that: the fluorescent material of described remote fluorescence sheet is to be coated in a substrate, has formed described remote fluorescence sheet.
10. LED train headlight according to claim 9, it is characterized in that: the light-emitting window at described reflector is placed a circular shadow shield, the outer bore of the outlet of described shadow shield outer shroud bore and reflector equates, the interior ring diameter of described shadow shield is than the little 4-10mm of outer bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200351583U CN203309779U (en) | 2012-12-26 | 2013-01-23 | Light collimation device and big train LED lamp using same |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220727816.0 | 2012-12-26 | ||
| CN201220727816 | 2012-12-26 | ||
| CN2013200351583U CN203309779U (en) | 2012-12-26 | 2013-01-23 | Light collimation device and big train LED lamp using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203309779U true CN203309779U (en) | 2013-11-27 |
Family
ID=49615988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200351583U Expired - Lifetime CN203309779U (en) | 2012-12-26 | 2013-01-23 | Light collimation device and big train LED lamp using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203309779U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990014A (en) * | 2015-06-29 | 2015-10-21 | 木林森股份有限公司 | LED track lamp |
| CN105782846A (en) * | 2016-03-28 | 2016-07-20 | 广州维思车用部件有限公司 | LED automobile lighting device, LED automobile headlamp and light emitting method of LED automobile lighting device |
| CN107461696A (en) * | 2016-06-03 | 2017-12-12 | 福特环球技术公司 | Vehicle lighting assembly |
| CN112856334A (en) * | 2020-12-21 | 2021-05-28 | 上海树泉信息技术有限公司 | LED and solid-state light source-based illumination lens for projection |
-
2013
- 2013-01-23 CN CN2013200351583U patent/CN203309779U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990014A (en) * | 2015-06-29 | 2015-10-21 | 木林森股份有限公司 | LED track lamp |
| CN105782846A (en) * | 2016-03-28 | 2016-07-20 | 广州维思车用部件有限公司 | LED automobile lighting device, LED automobile headlamp and light emitting method of LED automobile lighting device |
| CN105782846B (en) * | 2016-03-28 | 2020-01-14 | 广州维思车用部件有限公司 | LED vehicle lighting device, LED vehicle headlamp and light emitting method of LED vehicle lighting device |
| CN107461696A (en) * | 2016-06-03 | 2017-12-12 | 福特环球技术公司 | Vehicle lighting assembly |
| CN112856334A (en) * | 2020-12-21 | 2021-05-28 | 上海树泉信息技术有限公司 | LED and solid-state light source-based illumination lens for projection |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8960980B2 (en) | Light source module having a curved optical unit | |
| US8469567B2 (en) | Optical lens and vehicle lighting device using the same | |
| US9260201B2 (en) | Light for an aircraft | |
| US10132463B2 (en) | LED automotive tail lamp set | |
| US10386032B2 (en) | Vehicle lighting module | |
| CN100590346C (en) | LED road lamp | |
| US8801221B2 (en) | Lens structure, light source device and light source module | |
| CN104090356B (en) | An optical system for collimation of 1 mm × 1 mm LED light source | |
| WO2010099760A1 (en) | Led fog lamp | |
| CN103644487A (en) | Light-emitting diode (LED) runway center line lamp optical system based on free curved lens | |
| CN203309779U (en) | Light collimation device and big train LED lamp using same | |
| CN102367940B (en) | Combined refraction-reflection type automobile LED (light emitting diode) head lamp distance light optical system | |
| CN103620298A (en) | Light guide | |
| CN102313243B (en) | Non-imaging LED (light emitting diode) collimation system with compact structure | |
| CN104169776A (en) | Improved optical systems and LED luminaires | |
| TW201226799A (en) | Roadway lighting apparatus | |
| CN103900025A (en) | Light collimation device and application of light collimation device in LED train headlamp | |
| CN206330086U (en) | LED total reflection lens and LED line light source | |
| CN202947076U (en) | Lens, light-emitting diode (LED) device with lens and LED lamps and lanterns | |
| CN102367939A (en) | Reflection type automobile LED (light emitting diode) head lamp passing beam optical system | |
| CN105546484B (en) | A kind of collimation light generating apparatus based on LED light source | |
| CN207080826U (en) | A compound total reflection LED spotlight lens | |
| CN103486537A (en) | Fresnel lens and device for achieving narrow light emitting of non-point-light-source | |
| CN203757597U (en) | Light mixing lens | |
| CN101625075A (en) | LED packaging structure and car lamp with same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |
|
| CX01 | Expiry of patent term |