CN104791710A - Achromatism multilayer composite lens for LED light source vehicle lamp - Google Patents
Achromatism multilayer composite lens for LED light source vehicle lamp Download PDFInfo
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- CN104791710A CN104791710A CN201510109473.XA CN201510109473A CN104791710A CN 104791710 A CN104791710 A CN 104791710A CN 201510109473 A CN201510109473 A CN 201510109473A CN 104791710 A CN104791710 A CN 104791710A
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- lens
- multiple layer
- layer combination
- light source
- achromatism
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- 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
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Lenses (AREA)
Abstract
The invention provides an achromatism multilayer composite lens for an LED light source vehicle lamp. The achromatism multilayer composite lens is formed by combining two or more single lenses in a multilayer mode. The achromatism multilayer composite lens is characterized in that the different single lenses of the multilayer composite lens are made of materials of different refractive indexes, and the single lenses are fused together through the multi-color injection molding technology or installed in a combined mode through a screw and hot iron point method. The plastic lenses are adopted and replace original frequently-used glass lenses, and the dead weight of a whole vehicle is reduced. Meanwhile, the problem that when an LED light source is arranged and used originally through the single plastic material, imaging chromatic dispersion is too obvious is solved, and potential safety hazards caused by the fact that a vehicle headlamp has an obvious non-monochromatic light type are reduced.
Description
Technical field
The present invention relates to car light, particularly, invention relates to a kind of LED light source car light achromatism multiple layer combination lens, described LED light source car light achromatism multiple layer combination lens adopt the different plastic material multiple layer combination of light refractive index to form, the aberration of lens in the past can be corrected, solve the problem that front car light lighting lens imaging dispersion is in the past serious.
Background technology
In automotive lighting field, more commonly, utilize lens can to the characteristic being positioned over its focus, focal plane or the object near it and carrying out imaging, realize the optical plan of lighting pattern of dipped beam, distance light.Described method is not only more common in the occasion of conventional halogen light source, high-pressure discharge light source, in recent years, along with the rise of LED light source is also often used in the scheme of near, the distance light automotive lighting of LED light source.
Such as, after LED light source is applied to front car light illumination, the benefit brought is exactly, and it, relative to traditional halogen and gas photoelectricity light source, can deserve to be called cold light source, the remote conventional light source lower than same power of its external heat radiation.Therefore the plastic material lens that heatproof is more very different than glass have just had ample scope for abilities.
In the past conventional LED light source car light achromatism multiple layer combination lens use glass material lens.Also have and adopt unitary plastic material lens, because of with its lightweight feature, under the background of energy-saving and emission-reduction, promotion rate is very fast.
Achromatism multiple layer combination lens are a kind of achromatic lens bonding for the negative lens of the positive lens of low dispersion and high dispersive.During design, at blue (486.1nm), green (546.1nm) and red (656.3nm) three wavelength, be optimized the different value disperseed and lens shape, achieve minimum aberration.Therefore, these type of lens can use in whole visible region.But because adopting single material adapted LED light source, imaging dispersion is too obvious, because automobile front lamp easily causes potential safety hazard with obvious polyenergetic light type.
Because, unitary plastic material lens are due to the higher feature of the dispersion Abbe number of its material itself, and the spectrum of white light LEDs is discrete situation, cause LED light source more serious to the dispersion of the Combination nova of vehicle light illumination in imaging light type with plastic material, such as, at the edge of become light type, often there is obvious bluish violet.Meanwhile, due to the existence of described dispersion, make the illumination light type more not nature of automobile front lamp, the shake that hepatic edge-light type can travel along with vehicle, causes easily attracting the automatic concern of driver, staring, causes driving safety hidden danger.
Summary of the invention
In order to improve the problems referred to above, the object of the invention is: a kind of LED light source car light achromatism multiple layer combination lens are provided, described LED light source car light achromatism multiple layer combination lens are a kind of new automobile headlamp lighting lens, adopt the different plastic material multiple layer combination lens of light refractive index to synthesize a kind of lens can correcting aberration, imaging dispersion can be prevented.
Plastic material lens of the present invention have light advantage simultaneously, also have the advantage little with the dispersion of glass material lens imaging.
Technical solution of the present invention is as follows:
A kind of LED light source car light achromatism multiple layer combination lens, for being combined by the single element lens of two or more, is characterized in that,
The each single element lens forming described multiple layer combination lens is the unlike material organic polymer materials with different refractivity.
According to a kind of LED light source car light achromatism multiple layer combination lens of the present invention, it is characterized in that,
The each single element lens layer forming described multiple layer combination lens becomes solid lens together by multi-color injection molded technology welding, that is, do not have cavity or gap between the single element lens of unlike material.
According to a kind of LED light source car light achromatism multiple layer combination lens of the present invention, it is characterized in that,
After each single element lens series of strata forming described multiple layer combination lens form the different single element lens of material, refractive index by monochromatic injection moulding, recombinant is installed and is formed set of lenses, wherein, there is gap between single element lens.
According to a kind of LED light source car light achromatism multiple layer combination lens of the present invention, it is characterized in that,
The described unlike material organic polymer materials with different refractivity is selected from: Merlon (PC), polymethyl methacrylate (PMMA), polystyrene (PS), styrene-acrylonitrile, transparent polyamide, poly(4-methyl-1-pentene) (TPX), styrene-methylmethacrylate copolymer (MS), COC cyclic olefine copolymer and organic siliconresin class material.
According to a kind of LED light source car light achromatism multiple layer combination lens of the present invention, it is characterized in that,
The described unlike material organic polymer materials with different refractivity is selected from: Merlon (PC), polymethyl methacrylate (PMMA), polystyrene (PS), organic siliconresin class material and COC cyclic olefine copolymer.
According to described a kind of LED light source car light achromatism multiple layer combination lens of the present invention, it is characterized in that,
Described multiple layer combination lens are combined by the single element lens (or layer) of layer 2-4 unlike material.
According to a kind of LED light source car light achromatism multiple layer combination lens of the present invention, it is characterized in that,
Described multiple layer combination lens adopt screw to install.
According to a kind of LED light source car light achromatism multiple layer combination lens of the present invention, it is characterized in that,
Described multiple layer combination lens adopt blanching point methods to install.
According to the present invention, described there is different refractivity, the organic polymer materials of unlike material is optical plastic, because optical plastic compares with optical glass, there is good plastic molding operational characteristic, the advantage such as lightweight, with low cost, adopt optical plastic to manufacture optical element (comprising simple meniscus camera lens) in the past, be specially adapted to a kind of LED light source car light achromatism multiple layer combination lens of the present invention.
Described there is different refractivity, the organic polymer materials ranges of indices of refraction of unlike material is 1.42 to 1.69, Abbe constant γ=65.3 ~ 18.8.
Polymethyl methacrylate (PMMA) is commonly called as lucite, refractive index 1.47, Abbe constant, γ=29; The best plastics of optical property.Generally, thermal coefficient of expansion is 8-10 times of unorganic glass, and Long-Time Service temperature is only 80 degree, and hygroscopicity is higher, and after soaking 24h in water, water absorption rate reaches 0.1%-0.4% for PMMA mechanics and electric property.PMMA can injection moulding, extruding also can cast molding with thermoforming transparent article, and the PMMA monomer of liquid is injected mould together with catalyst, insulation Slow cooling at moderate temperatures.
Polystyrene (PS) is called three large transparent plastics together with PMMA with PC.Its optical property is poorer than PMMA, but hydroscopicity is low, and saturated water absorption ren is 0.03%-0.05%.
Polycarbonate (PC) is the transparent engineering plastics of high comprehensive performance, refractive index 1.58, Abbe constant, γ=60.Polycarbonate (PC) optical property is only lower than PMMA.But heat-resisting cold-resistant, can stable mechanical property be kept within the scope of-135-120 degree.The hardness of PC goods is low, wears no resistance, and birefringence is high.
Described styrene-methylmethacrylate copolymer (MS) is formed by 70% styrene and 30% methylmethacrylate copolymer, and the light transmittance of copolymer is better than PS, keeps again the good fluidity of PS.Can be used for improving the weatherability of PMMA, oil resistivity and wearability.
Described poly(4-methyl-1-pentene), be called for short TPX, it is the transparent plastic of crystal type, and light transmittance is that the density of 90%, PMP is only 0.83g/cm
3, minimum refractive index 1.465, ultraviolet ray transmissivity is only second to unorganic glass, is the material that the present invention can pay the utmost attention to use.
Described transparent polyamide is a kind of unformed polymer.Light transmittance can reach 90%, and water absorption rate is higher is 0.41%, but lower than most of polyamide kind.It has the excellent mechanical performances of common polyamide concurrently, and anti-indentation and stress crack resistant are better than PMMA and PC, is the material that the present invention can pay the utmost attention to use.
Polychrome multi component injection molding method (Multicolour and Multicomponent Injection) MouldingENGEL (Ying Geer) C molding is that a manufacturing process or a production unit are combined into multipurpose multifunctional operating system several plastic.It applies color effects, and the characteristic of different materials is combined.
According to the present invention, the above-mentioned plastic material lens for correcting aberration can have two kinds of principal modes to exist:
1. different refractivity or different classes of plastic material are combined, as Fig. 1 by the multi-color injection molded technology of mould.Multiple layer combination lens based on formal similar employing glass, be characterized in not having between different plastic material air, but and two glyglass lens bond with special glue between two blocks of different refractivity glass unlike in multiple layer combination lens, and the plastic material of two kinds or more that the present invention adopts is by the complete welding of multi-color injection molded technology more together, become solid lens, as Fig. 2 section can clearly be expressed, wherein 1 and 2 be respectively PC and PMMA material.Different plastic material layers becomes one piece of lens containing multilayer different refractivity plastic material by the multi-color injection molded technology of mould.
2. the layer of the plastic material of different refractivity, the lens of monolithic are independently formed by the injection moulding of mould, only containing a kind of material in single element lens, as Fig. 4,3 and 4 indications are respectively as polystyrene (PS) single element lens and transparent polyamide single element lens, by the location outside each single element lens of such as 5 indications of Fig. 4 and mounting structure, are combined by later process, be installed as multiple layer combination lens, as Fig. 3.
According to the present invention, as installing the method forming multiple layer combination lens, can be adopt screw, the mechanical erection ways such as blanching point, also can adopt the connection of the single element lens of the unlike material of two kinds or more, location, the technical combinations multi-color injection molded by mould becomes multiple layer combination lens more together.
The beneficial effect of the invention:
The present invention adopts plastic material lens, instead of originally conventional glass material lens, reduces the deadweight of car load.Invent simultaneously and utilized the plastic material of different refractivity by multi-color injection molded technology, or the way of the multiple layer combination lens that rear road is installed creates a kind of brand-new form of lens, solve and originally adopt unitary plastic material when adapted LED light source, imaging dispersion is problem too significantly, decreases the potential safety hazard because automobile front lamp causes with obvious polyenergetic light type.Combine the advantage that plastic material lens are light, the advantage little with the dispersion of glass material lens imaging, become a kind of new solution taking into account original different schemes feature.
Accompanying drawing illustrates:
Fig. 1 is the schematic perspective view of the multiple layer combination lens of solid form of the present invention.
Fig. 2 is the sectional drawing of the multiple layer combination lens of solid form of the present invention.
Fig. 3 is the multiple layer combination lens schematic perspective view of hollow form of the present invention.
Fig. 4 is the sectional drawing of hollow form of the present invention.
In figure, 1 is Merlon (PC) single element lens, 2 is polymethyl methacrylate (PMMA) single element lens, 3 is polystyrene (PS) single element lens, 4 is transparent polyamide single element lens, and 5 for multiple layer combination lens employing screw is by 2 layers of single element lens combination installation.
Detailed description of the invention
Embodiment 1
As Fig. 1, shown in 2, a kind of LED light source car light achromatism multiple layer combination lens are the bilayer combination lens by two-layer unlike material combinatorial injection molding.Described bilayer combination lens, by multi-color injection molded technology one-shot forming, are welded together, become solid lens, that is, do not have cavity, gap between different plastic material single element lens.Wherein, one deck lens are biconvex lens, and its material is Merlon (PC), and described biconvex lens side is the single convex lens touched with described biconvex lens, and its material is polymethyl methacrylate (PMMA).
Embodiment 2
As Fig. 3, shown in 4, except following difference, other are as embodiment 1, obtained multiple layer combination lens of the present invention:
After the single element lens system of the unlike material of described bilayer combination lens forms the different single element lens of material, refractive index by monochromatic injection moulding, recombinant is installed and is formed set of lenses.One deck lens of the single element lens of the unlike material of described multiple layer combination lens are planoconvex spotlight, and described planoconvex spotlight side is single convex lens of one deck and the interstitial contiguity of described planoconvex spotlight.The described planoconvex spotlight material with different refractivity is polystyrene (PS), and single convex lens material is transparent polyamide single element lens.
Space is had to exist between the unlike material single element lens of described double end layer compound lens, described bilayer combination lens are passed through the connection of single element lens by the single element lens of above-mentioned 2 layers of unlike material, location, then become multiple layer combination lens together by adopting blanching point methods to install combination.
Embodiment 3
Except following difference, other are as embodiment 2, obtained three layers of compound lens of the present invention:
After the single element lens system of the unlike material of described compound lens forms the different single element lens of material, refractive index by monochromatic injection moulding, recombinant is installed and is formed set of lenses.One deck lens of the single element lens of the unlike material of described compound lens are planoconvex spotlight, and described planoconvex spotlight side is form space, two layers of single convex lens that the two touches each other with described planoconvex spotlight.The described planoconvex spotlight material with different refractivity is Merlon (PC), single convex lens material is polymethyl methacrylate (PMMA) and polystyrene (PS), described multiple layer combination lens are passed through the connection of single element lens by the single element lens of above-mentioned 3 layers of unlike material, locating surface, then become multiple layer combination lens together by adopting blanching point methods to install combination.
According to the present invention, adopt plastic material lens, instead of originally conventional glass material lens, reduce the deadweight of car load.Invent simultaneously and utilized the plastic material of different refractivity by multi-color injection molded technology, or the way of the multiple layer combination lens that rear road is installed creates a kind of brand-new form of lens, solve and originally adopt unitary plastic material when adapted LED light source, imaging dispersion is problem too significantly, decreases the potential safety hazard because automobile front lamp causes with obvious polyenergetic light type.Combine the advantage that plastic material lens are light, the advantage little with the dispersion of glass material lens imaging, become a kind of new solution taking into account original different schemes feature.
Claims (9)
1. LED light source car light achromatism multiple layer combination lens, for being combined by the single element lens of two or more, is characterized in that,
The each single element lens forming described multiple layer combination lens is the unlike material organic polymer materials with different refractivity.
2. a kind of LED light source car light achromatism multiple layer combination lens as claimed in claim 1, is characterized in that,
The each single element lens layer forming described multiple layer combination lens becomes solid lens together by multi-color injection molded technology welding, that is, do not have cavity or gap between the single element lens of unlike material.
3. a kind of LED light source car light achromatism multiple layer combination lens as claimed in claim 1, is characterized in that,
After each single element lens series of strata forming described multiple layer combination lens form the different single element lens of material, refractive index by monochromatic injection moulding, recombinant is installed and is formed set of lenses, wherein, there is gap between single element lens.
4. a kind of LED light source car light achromatism multiple layer combination lens as claimed in claim 1, is characterized in that,
The described unlike material organic polymer materials with different refractivity is selected from: Merlon (PC), polymethyl methacrylate (PMMA), polystyrene (PS), styrene-acrylonitrile, transparent polyamide, poly(4-methyl-1-pentene) (TPX), styrene-methylmethacrylate copolymer (MS), COC cyclic olefine copolymer and organic siliconresin class material.
5. a kind of LED light source car light achromatism multiple layer combination lens as claimed in claim 4, is characterized in that,
The described unlike material organic polymer materials with different refractivity is selected from: Merlon (PC), polymethyl methacrylate (PMMA), polystyrene (PS), organic siliconresin class material and COC cyclic olefine copolymer.
6. a kind of LED light source car light achromatism multiple layer combination lens as described in any one of claim 1-3, is characterized in that,
Described multiple layer combination lens are combined by the single element lens of layer 2-4 unlike material.
7. a kind of LED light source car light achromatism multiple layer combination lens as claimed in claim 3, is characterized in that,
Described multiple layer combination lens adopt screw to install.
8. a kind of LED light source car light achromatism multiple layer combination lens as claimed in claim 3, is characterized in that,
Described multiple layer combination lens adopt blanching point methods to install.
9. a kind of LED light source car light achromatism multiple layer combination lens as claimed in claim 1, is characterized in that,
Described multiple layer combination lens are used for automotive lighting headlamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510109473.XA CN104791710A (en) | 2015-03-12 | 2015-03-12 | Achromatism multilayer composite lens for LED light source vehicle lamp |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510109473.XA CN104791710A (en) | 2015-03-12 | 2015-03-12 | Achromatism multilayer composite lens for LED light source vehicle lamp |
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| CN104791710A true CN104791710A (en) | 2015-07-22 |
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| CN201510109473.XA Pending CN104791710A (en) | 2015-03-12 | 2015-03-12 | Achromatism multilayer composite lens for LED light source vehicle lamp |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443843A (en) * | 2016-12-07 | 2017-02-22 | 福建福晶科技股份有限公司 | Separated zero-clearance combination lens |
| CN108105717A (en) * | 2017-11-29 | 2018-06-01 | 马瑞利汽车零部件(芜湖)有限公司 | Compound lens of car light |
| CN113091014A (en) * | 2021-04-06 | 2021-07-09 | 华域视觉科技(上海)有限公司 | Car light optical element, car light module and vehicle |
| CN114644444A (en) * | 2020-12-17 | 2022-06-21 | 微凤凰有限公司 | Method for manufacturing achromatic lens, and medical endoscope |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443843A (en) * | 2016-12-07 | 2017-02-22 | 福建福晶科技股份有限公司 | Separated zero-clearance combination lens |
| CN108105717A (en) * | 2017-11-29 | 2018-06-01 | 马瑞利汽车零部件(芜湖)有限公司 | Compound lens of car light |
| CN114644444A (en) * | 2020-12-17 | 2022-06-21 | 微凤凰有限公司 | Method for manufacturing achromatic lens, and medical endoscope |
| CN113091014A (en) * | 2021-04-06 | 2021-07-09 | 华域视觉科技(上海)有限公司 | Car light optical element, car light module and vehicle |
| CN113091014B (en) * | 2021-04-06 | 2022-02-22 | 华域视觉科技(上海)有限公司 | Car light optical element, car light module and vehicle |
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