CN106958785A

CN106958785A - A kind of curved month type lens of car light system

Info

Publication number: CN106958785A
Application number: CN201710279093.XA
Authority: CN
Inventors: 江程; 赵烈烽; 佘俊; 南基学
Original assignee: Guangdong Jia Jia Photoelectric Polytron Technologies Inc
Current assignee: Guangdong Jia Jia Photoelectric Polytron Technologies Inc
Priority date: 2017-04-25
Filing date: 2017-04-25
Publication date: 2017-07-18

Abstract

Present invention system provides a kind of curved month type lens of car light system, including lens, light source and reflector, and light source is arranged in reflector, and lens are located at the side of reflector light extraction；Lens include first surface and second surface, first surface is located at close to the side of reflector, second surface is located remotely from the side of reflector, the optics significant surface of first surface is Fresnel structure, the optics significant surface of second surface is smooth, and first surface is recessed to form the lens of curved month type to second surface.The present invention substitutes traditional convex lens using the Fresnel Lenses of curved month type, the thickness and weight of lens can effectively be reduced, so as to reduce the volume and weight of lens of car light system, reduce processing cost, meanwhile, lens thickness is small can be effectively improved image quality, reduce luminous energy loss, in addition, the outer surface continuous and derivable of lens is formed, meets the demand in market.

Description

A kind of curved month type lens of car light system

Technical field

The present invention relates to lens of car light system, a kind of curved month type lens of car light system is specifically disclosed.

Background technology

Headlight for vehicles illuminator is broadly divided into two kinds, dipped beam lamp system and distance light lamp system, traditional dipped beam lamp system by Light source, reflector, cut-off cable architecture and convex lens group into, as shown in figure 1, convex lens be used for cut-off cable architecture be imaged, The hot spot to be formed is set to meet the light distribution requirement of dipped headlight, cut-off cable architecture can make catch or linear with similar cut-off The composite part of shape；In distance light lamp system, not cut-off cable architecture, other are identical with dipped beam lamp system.

Convex lens in headlight for vehicles illuminator are generally biconvex lens or planoconvex spotlight, due to headlight for vehicles illuminator The focal length of middle lens is typically shorter, so lens thickness can be very big, causes the volume of lens also very big, and the weight of lens Can be very big.The material that lens are used in current headlight for vehicles illuminator is typically glass, optical resin etc., no matter which kind of material Material, making the big lens of thickness needs to expend more rapidoprint, and can expend the more time, is more expensive to manufacture, this Outside, the weight of lens is big in headlight for vehicles illuminator, correspondingly, to the requirement of mechanical strength of headlight for vehicles illuminator also compared with Height, while can also increase the energy loss of automobile.

A kind of existing headlight for vehicles illuminator replaces convex lens with Fresnel Lenses, as shown in Figure 2；It is relatively conventional convex Lens and Fresnel Lenses, as shown in figure 3, a in Fig. 3 is convex lens, the b in Fig. 3 is Fresnel Lenses, Fresnel Lenses phase More than 40% volume and weight is almost reduced for convex lens, and reduces more than 50% lens thickness, so as to subtract The volume and weight of mini system, but so design Fresnel Lenses can destroy the raised profile of lens combination, make the appearance of lens Face is uneven, and surface gloss discontinuously changes, and most of consumer can not receive, meanwhile, volume and weight does not also drop To minimum.

The content of the invention

Based on this, it is necessary to for prior art problem there is provided a kind of curved month type lens of car light system, can significantly reduce The volume and weight of system, and the outer surface continuous and derivable of lens.

To solve prior art problem, the present invention disclose a kind of curved month type lens of car light system, including lens, light source and instead Emitter, light source is arranged in reflector, and lens are located at the side of reflector light extraction；Lens include first surface and second surface, First surface is located at close to the side of reflector, and second surface is located remotely from the side of reflector, and the optics of first surface is effective Face is Fresnel structure, and the optics significant surface of second surface is smooth, and first surface is recessed to form the saturating of curved month type to second surface Mirror.

Further, second surface protrudes to the one side away from reflector.

Further, the optics significant surface of second surface can be spherical structure, non-spherical structure or free form surface knot Structure.

Further, Fresnel concentric circles quantity n≤3 of first surface.

Further, provided with cut-off cable architecture between lens and reflector.

Further, cut-off line mechanism is catch.

The light that light source is sent reflects by reflector, and the first surface from lens is incident, in second surface outgoing, curved month type The thickness of Fresnel Lenses is substantially reduced, and shortens light path of the light inside lens, so as to effectively improve the quality of imaging, together When reduce the luminous energy loss that is absorbed by material and causes.

Beneficial effects of the present invention are：The present invention discloses a kind of curved month type lens of car light system, using the Fei Nie of curved month type You substitute traditional convex lens by lens, the thickness and weight of lens can be effectively reduced, so as to reduce the body of lens of car light system Product and weight, reduce processing cost, meanwhile, lens thickness is small can be effectively improved image quality, reduce luminous energy loss, in addition, The outer surface continuous and derivable of lens is formed, meets the demand in market.

Brief description of the drawings

Fig. 1 is the structural representation of traditional dipped beam lamp system.

Fig. 2 is a kind of structural representation of dipped beam lamp system.

Fig. 3 is the contrast schematic diagram of non-spherical lens and Fresnel Lenses.

Fig. 4 is structural representation of the invention.

Fig. 5 is the contrast schematic diagram of lens in non-spherical lens, Fresnel Lenses and the present invention.

Fig. 6 is the contrast schematic diagram of lens in traditional biconvex lens and embodiment one.

Fig. 7 is the contrast schematic diagram of lens in traditional planoconvex spotlight and embodiment two.

Fig. 8 is the contrast schematic diagram of lens in traditional concave-convex lens and embodiment three.

Reference is：Lens 10, first surface 11, second surface 12, light source 20, reflector 30, cut-off cable architecture 40.

Embodiment

For the feature, technological means and the specific purposes reached, function of the present invention can be further appreciated that, with reference to Accompanying drawing is described in further detail with embodiment to the present invention.

Referring to figs. 1 to Fig. 8.

The present invention discloses a kind of curved month type lens of car light system, including lens 10, light source 20 and reflector 30, and light source 20 is set It is placed in reflector 30, lens 10 are located at the side of the light extraction of reflector 30；Lens include first surface 11 and second surface 12, the One surface 11 is located at close to the side of reflector 30, and second surface 12 is located remotely from the side of reflector 30, first surface 11 Optics significant surface is Fresnel structure, and the optics significant surface of second surface 11 is smooth, and first surface 11 is recessed to second surface 12 Form the lens 10 of curved month type.

As shown in figure 4, the light that light source 20 is sent reflects by reflector 30, lens 10 are incided from first surface 11, from The smooth outgoing of second surface 12, first surface 11 is recessed to second surface 12 forms the lens of curved month type, and first surface is Fresnel structure, as shown in figure 5, A is traditional convex lens, B is general Fresnel Lenses, and C is lens 10 of the invention, this In curved month type and 70% is reduced relative to traditional convex lens thickness and weight with the lens 10 of Fresnel structure in invention, 50% is reduced relative to general Fresnel Lenses thickness and weight, the thickness of lens 10 is substantially reduced, light is in lens 10 In light path shorten, and then reduce the accumulative optical path difference of light, the quality of imaging can be effectively lifted, while luminous energy can be reduced The loss for being absorbed by material and causing.

Present invention significantly reduces the thickness of lens 10 and weight, and then reduce the volume and again of whole lens of car light system Amount, meets the requirement of auto parts machinery loss of weight, and effectively reduces processing cost, and the small lens 10 of thickness can lift the matter of imaging Amount, the outer surface continuous and derivable of lens 10 meets the demand in market instantly.

To make lens 10 more conform to the demand in market instantly, second surface 12 protrudes to the one side away from reflector 30, The optics significant surface of second surface 12 can be spherical structure, non-spherical structure or free form surface structure, the He of first surface 11 Second surface 12 coordinates, so that lens 10 are closer to curved month type, can further reduce the thickness and weight of lens 10, Image quality is improved, meanwhile, the lens 10 of first surface 11 and the formation of the envelope of second surface 12 can be thin for thick middle both sides The thick concavees lens of convex lens or intermediate thin both sides, the thickness of lens 10 everywhere can be with equal or change；Preferably, the first table Fresnel concentric circles quantity n≤3 in face 11, can fully reduce the thickness of lens 10.

In dipped beam lamp system, provided with cut-off cable architecture 40 moving up and down, dead line between lens 10 and reflector 30 Mechanism 40 can be that catch, diaphragm etc. have the part for forming similar dead line effect, and cut-off line mechanism 40 is arranged on reflector Before 30 second focus, light source 20 is arranged on first focal point of reflector 30, and general dipped beam lamp system is in dead line Nearby there is obvious dispersion in structure 40, form blue side or purple boundary, can be with the smooth optics significant surface of second surface 12 Tiny micro-structural is set, and the chromatic dispersion problem for improving the formation of lens 10 reduces dispersion.

Based on above-mentioned lens of car light system, lens 10 can be set according to different demands.

Embodiment one, the thickness phase everywhere of lens 10 of first surface 11 and the envelope of second surface 12 formation of lens 10 Deng as shown in the c in Fig. 6, a in Fig. 6 is the corresponding original biconvex lens of the present embodiment lens 10.

Embodiment two, the thickness everywhere of lens 10 of first surface 11 and the envelope of second surface 12 formation of lens 10 not phase Deng being the thin thick middle in both sides, the lens 10 of formation are convex lens, as shown in fig. 7 c, a in Fig. 7 is the present embodiment lens 10 corresponding original planoconvex spotlights.

Embodiment three, the thickness everywhere of lens 10 of first surface 11 and the envelope of second surface 12 formation of lens 10 not phase Deng being the thick intermediate thin in both sides, the lens 10 of formation are concavees lens, as shown in the c in Fig. 8, a in Fig. 8 is the present embodiment lens 10 corresponding original concave-convex lens.

Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.

Claims

1. a kind of curved month type lens of car light system, it is characterised in that including lens (10), light source (20) and reflector (30), institute State light source (20) to be arranged in the reflector (30), the lens (10) are located at the side of the reflector (30) light extraction；Institute Stating lens includes first surface (11) and second surface (12), and the first surface (11) is located at close to the reflector (30) Side, the second surface (12) is located remotely from the side of the reflector (30), and the optics of the first surface (11) is effective Face is Fresnel structure, and the optics significant surface of the second surface (11) is smooth, and the first surface (11) is to second table Face (12), which is recessed, forms the lens (10) of curved month type.

2. a kind of curved month type lens of car light system according to claim 1, it is characterised in that the second surface (12) to One side away from the reflector (30) is protruded.

3. a kind of curved month type lens of car light system according to claim 1, it is characterised in that the second surface (12) Optics significant surface can be spherical structure, non-spherical structure or free form surface structure.

4. a kind of curved month type lens of car light system according to claim 1, it is characterised in that the first surface (11) Fresnel concentric circles quantity n≤3.

5. a kind of curved month type lens of car light system according to claim 1, it is characterised in that the lens (10) with it is described Provided with cut-off cable architecture (40) between reflector (30).

6. a kind of curved month type lens of car light system according to claim 5, it is characterised in that the cut-off line mechanism (40) For catch.