CN108916805A - Lens of car light - Google Patents
Lens of car light Download PDFInfo
- Publication number
- CN108916805A CN108916805A CN201710171979.2A CN201710171979A CN108916805A CN 108916805 A CN108916805 A CN 108916805A CN 201710171979 A CN201710171979 A CN 201710171979A CN 108916805 A CN108916805 A CN 108916805A
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- Prior art keywords
- light
- lens
- reflecting
- optical axis
- optical
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Classifications
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
A kind of lens of car light suitable for conducting the light of an illuminating part, and includes an incidence surface, a light-emitting surface and a reflecting surface towards the illuminating part.The light-emitting surface is alternatively arranged along the optical axis and the incidence surface.The reflecting surface extends to the light-emitting surface from the incidence surface and surrounds the optical axis, which has the reflecting segment and several optical textures for being used to destroy light generation total reflection of several light total reflections that can carry out incidence, has offset between wantonly two adjacent reflecting segments.By the way that the optical texture is arranged in the reflecting surface, light can be destroyed and generate total reflection, avoid unwanted light from being projected by the light-emitting surface, and then can be reduced remaining light, avoid with passerby by glare effects, therefore traffic safety can be promoted.
Description
Technical field
The present invention relates to a kind of lens, more particularly to a kind of lens of car light.
Background technique
A kind of known car light mainly passes through a lampshade of the car light, and the light source of a light source is projected towards front-reflection.It should
Lampshade has a reflecting surface, which usually forms via vacuum coating processing procedure.But since vacuum coating process temperatures are high, institute
It is extremely limited with the material selection of the lampshade and it is necessary to consider the associativity of plated film and lamp shade body.In addition, vacuum
Plated film tends to have the problem of plated film membrane thickness unevenness, so will affect the precision of optical reflection, and the light shape after leading to light out is set with original
Photometric shape has error, and reflectivity also will receive influence, and then leads to higher light loss.So there is a kind of car light saturating at present
Mirror design is so that light is passed through the car light by total internal reflection (Total Internal Reflection, abbreviation TIR) principle
After lens, the total internal reflection of the reflecting surface by the lens of car light, then projected by a light-emitting surface of the lens of car light.Have at present
Theoretical calculation, the reflectivity theoretical value of the lens of car light is up to 100%, so relative to the lampshade using vacuum coating come anti-
It penetrates, using the design of TIR lens of car light, light loss rate and improving optical precision can be reduced.
Such as TaiWan, China patent certificate number I491833 Patent Case, a kind of automobile lighting lens of car light is provided, includes
One lighting source and collimating lens, the collimation lens can be projected the ray guidance of the lighting source by TIR principle.So
And the light that such TIR lens projects go out is found in practice, in there is partial region to form unwanted remaining light in irradiation plane,
It causes dazzle and influences to be generated in "cut-off"line (cut-off line) upper area by taking low beam as an example with passerby's safety
Remaining light, this remaining light problem need to be improved.
Summary of the invention
The purpose of the present invention is to provide a kind of lens of car light that can be reduced remaining light, promote traffic safety.
Lens of car light of the invention suitable for conducting the light of an illuminating part, and includes one towards the illuminating part
Incidence surface, a light-emitting surface and a reflecting surface.The incidence surface includes entering for a rearwardly extending optical axis before one
Light envelope surface portion and one are connected to the light inputting end face for entering light envelope surface portion front end and being located on the optical axis, the light-emitting surface edge
The optical axis is alternatively arranged with the incidence surface, which extends to the light-emitting surface from the incidence surface and surround the optical axis, the reflection
Face has the reflecting segment and several light that total reflection is generated for destroying light of several light total reflections that can carry out incidence
Structure is learned, has offset between wantonly two adjacent reflecting segments.
Lens of car light of the invention, the reflecting surface include two between left and right every the first reflecting part and one be connected to
The second reflecting part between the first reflecting part root edge, the optical texture are formed in second reflecting part.
Lens of car light of the invention, the optical texture is in tandem and left and right is to long to extension, each optical texture
Define one or so the chase to extension.
Lens of car light of the invention, each optical texture have one backwards and the light of the illuminating part can be supplied to pass through
Side to light and a shady face facing forward are neighbouring with the side to light of one of them between any two adjacent optical textures
Another the shady face.
Lens of car light of the invention, the extending direction of the side to light of each optical texture and the extending direction of the optical axis
An acute angle be greater than 18 degree.
Lens of car light of the invention, the optical texture are the texture for making the light of the illuminating part generate diffusion.
Lens of car light of the invention, the light-emitting surface include one and connect the reflecting surface and surround the anchor ring portion of the optical axis, with
And one be located on the optical axis and by the center face that the anchor ring portion surrounds, center face is a curved surface, the anchor ring portion
It can be for being entered light envelope surface portion by this of the incidence surface and being entered and passed through by the light reflective surface from, the facial energy in the center
Pass through for the light of the light inputting end face entrance by the incidence surface.
Lens of car light of the invention, the anchor ring portion of the light-emitting surface are a plane.
The beneficial effects of the present invention are：By the way that the optical texture is arranged in the reflecting surface, light can be destroyed and generated entirely
Reflection, avoids unwanted light from being projected by the light-emitting surface, and then can be reduced remaining light, avoids with passerby by glare effects, because
This can promote traffic safety.
Detailed description of the invention
Other features of the invention and effect will be clearly presented in the embodiment referring to schema, wherein：
Fig. 1 is a perspective view of an embodiment of lens of car light of the present invention；
Fig. 2 is the perspective view for looking up angle of the embodiment；
Fig. 3 is the side view diagram of the embodiment；
Fig. 4 is a side view cutaway drawing, illustrates opticpath；
Fig. 5 be one along Fig. 3 middle line 5-5 overhead sectional view, illustrate opticpath.
Specific embodiment
Refering to fig. 1~4, an embodiment of lens of car light of the present invention, the light of the illuminating part 9 suitable for conducting a car light
Line, a illuminating part 9 such as light emitting diode (LED).The lens of car light is made of the resin material of light-permeable, and includes one to enter
Smooth surface 1, a light-emitting surface 2 and a reflecting surface 3.
The incidence surface 1 enters light envelope surface portion towards the illuminating part 9, and including rearwardly extending optical axis L before one
11 and one be connected to this enter 11 front end of light envelope surface portion and be located at the optical axis L on light inputting end face 12, the light inputting end face
12 enter light envelope surface portion 11 with this defines a light conducting space 10 jointly.
The light-emitting surface 2 and the incidence surface 1 are arranged along the optical axis L time interval.The light-emitting surface 2 includes one and connects the reflection
3 front end of face is simultaneously located at the center surrounded in the optical axis L and by the anchor ring portion 21 around the anchor ring portion 21 of the optical axis L and one
Face 22.The anchor ring portion 21 is shiny surface of the surface without any decorative pattern, and the anchor ring portion 21 is a flat surface.Center face 22
Relative to the anchor ring portion 21 towards 1 indent of incidence surface, the bottom of center face 22 is then facing forward relative to the anchor ring portion 21 at top
Prominent, center face 22 is a curved surface with radian, and has the block of several different curvatures.
The reflecting surface 3 from the incidence surface 1 extends to the light-emitting surface 2 and around the optical axis L, and including two between left and right every
The second reflecting part 32 and one that first reflecting part 31, one is connected between 31 root edge of the first reflecting part is connected to described
Third reflecting part 33 between one reflecting part, 31 apical margin.There are every one first reflecting part 31 several light that can carry out incidence to be all-trans
The reflecting segment 311 penetrated, every one first reflecting part 31, which is taken up an official post between two adjacent reflecting segments 311, offset.Second reflecting part 32
Tool there are two between left and right every the first bottom section 321, one be located at first bottom section 321 between and height and position be lower than described first
The second bottom section 322, two of bottom section 321 is prolonged from the left and right sides of second bottom section 322 towards ipsilateral first bottom section 321 respectively
Stretch connection third bottom section 323 and it is several for destroy light generate total reflection optical texture 34.
The optical texture 34 is in tandem and left and right is to long to extension, and each optical texture 34 defines one or so length
To the chase 35 of extension.Each optical texture 34 extends the 321, second bottom of the first bottom section section 322 and third bottom section 323
On, and the side to light 341 and a shady face facing forward that can be simultaneously passed through backwards for the light of the illuminating part 9 with one
342.It is with the side to light 341 of one of them adjacent to another the shady face between any two adjacent optical textures 34
342.The side to light 341 of each optical texture 34 is gradually tiltedly to stretch upward back to front, the extending direction of the side to light 341
With an acute angle θ of the extending direction of the optical axis L, 18 degree are preferably greater than, preferably destroys total reflection function to generate,
If it is less than or be equal to 18 degree, then the effect for destroying total reflection is slightly bad so that dark space more than "cut-off"line still may production
Raw dazzle.
Refering to fig. 1,4,5, the present invention is in use, some light of the illuminating part 9 enters light envelope surface portion 11 by this and enters the vehicle
Lamp lens interior (path of arrow A, B in such as figure), some light are entered inside the lens of car light (such as by light inputting end face 12
The path of arrow C in figure).The light of the directive light inputting end face 12, the design that can be dashed forward by the light inputting end face 12 to backarc
And spotlight effect is generated, and advance to be roughly parallel to the direction of the optical axis L towards the light-emitting surface 2, and being somebody's turn to do via the light-emitting surface 2
Central face 22 projects forward.This some light is generally the light for being not affected by reflex and projecting forward.
On the other hand, which enters via this in light that light envelope surface portion 11 is refracted into inside the lens of car light, can
It is divided into the first reflecting part 31 of the directive reflecting surface 3 and 33 light (arrow A) of third reflecting part and directive second reflecting part
32 light (arrow B).Wherein, the light of arrow A can be reflected (big portion with third reflecting part 33 by first reflecting part 31
It is divided into total internal reflection) it is projected again via the light-emitting surface 2, the light of this part is generally the anchor ring portion 21 by the light-emitting surface 2
It projects, uniform light guide can be formed.The present invention generally speaking, via the center face 22 project light, and via
The light that reflex is projected by the anchor ring portion 21 again, can be collocated with each other, and be formed on the perspective plane before the lens of car light
One meets the light shape of regulation, and in being formed with a "cut-off"line (cut-off line) on appropriate location.
Furthermore since reflecting surface 3 of the invention is equipped with the optical texture 34, the construction of the optical texture 34, surface
Design, arrangement etc., can be used to destroy the total reflection of light, therefore, the light of optical texture 34 described in 9 directive of illuminating part is (such as
Arrow B), after the side to light 341 of the optical texture 34 described in directive, most of light can be reflected by the side to light 341 and be gone out, this
Design is intended, if when the not set optical texture 34, the light of directive second reflecting part 32 largely can quilt
Total reflection and projected towards the light-emitting surface 2, and its light injection angle is slightly upward, thus to cause area above "cut-off"line
Domain generates remaining light, can become dazzle and influence to use passerby.And the present invention is projected light refraction by the optical texture 34, i.e.,
Make to have some light still may by optical texture 34 reflection and projected towards the light-emitting surface 2, but due to non-total reflection, so
Really it can be reduced the remaining light intensity projected from the light-emitting surface 2.
The optical texture 34 of supplementary explanation, the present embodiment can be formed using NC processing machining, such processing method
Formed the optical texture 34, be by side to light 341 by incidence come light refraction injection lens outside, reach more than reduction
The effect of light.On the other hand, other methods production also can be used in the optical texture 34 of the invention, such as can use energy
For making the light of the illuminating part 9 generate the texture of diffusion, it so can also reach the mesh for destroying light total reflection, reducing remaining light
's.The production of the texture mainly carries out wet etching to second reflecting part 32 of the reflecting surface 3, makes second reflecting part
32 form rough surface, and the surface after wet etching is substantially in white haze color.And the aforementioned optics knot that machining formation is processed using NC
Structure 34 can show the apparent chase 35, and the originally brighter color of lens is still presented in second reflecting part 32.This
Outside, the present invention, which is not necessary to limit the optical texture 34, is necessarily located at second reflecting part 32, can be according to the area for needing to reduce remaining light
Domain, other positions on the reflecting surface 3 are also provided with the optical texture 34.
It is noted that 311 curvature of each reflecting segment of the reflecting surface 3 is different, each incidence angles degree can be cooperated
Light and reflex appropriate is provided, a variety of different light reflection angles and path can be increased, it is uniform to obtain diffusion
Light shape, and make to be projeced into below "cut-off"line after reflecting and via the light that the anchor ring portion 21 projects, avoid light and shade from ending
Line top is excessively bright and does not meet regulation.In addition, passing through the curvature design of reflecting segment 311 appropriate, adjustment area of light can be used for
Left and right directions expanded range, can by area of light toward the left and right sides stretch increase.
In addition, passing through the curvature for changing the center face 22 of the light-emitting surface 2, the left and right sides of area of light can also be stretched and be added
Greatly, it helps adjust the position of the "cut-off"line.It is found via experiment, if the center facial 22 is designed as plane rather than bent
Face then has remaining light in the position of "cut-off"line and generates, causes the light shape projected not meet regulation demand, so the center
Face 22 is necessary for curved design.The present invention by the Curvature match in more than 311 kinds of curvature of the reflecting segment and center facial 22,
Reflected light and direct projection light path can be effectively adjusted, and controls light saturation degree, the uniformity, light shape and the "cut-off"line of light guide
Position, thus improving optical precision.Supplementary explanation, the design spirit of light-emitting surface 2 of the invention, as long as center face 22
With the curvature difference in the anchor ring portion 21, or both one in front and one in back, to make the light-emitting surface 2 that can form two different blocks (i.e.
The anchor ring portion 21 and center face are 22).
In conclusion can destroy light by the way that the optical texture 34 is arranged in the reflecting surface 3 and generate total reflection, avoid
Unwanted light is projected by the light-emitting surface 2, and then be can be reduced remaining light, avoided with passerby by glare effects, therefore can be promoted
Traffic safety.
As described above, only the embodiment of the present invention is when cannot be limited the scope of implementation of the present invention with this, i.e., all
According to simple equivalent changes and modifications made by claims of the present invention and description, all still belong to the scope of the present invention.
Claims (8)
1. a kind of lens of car light, suitable for conducting the light of an illuminating part, and include one towards the illuminating part incidence surface,
One light-emitting surface and a reflecting surface, which is characterized in that the incidence surface includes a rearwardly extending optical axis before one
Enter light envelope surface portion and one is connected to the light inputting end face for entering light envelope surface portion front end and being located on the optical axis, light should be gone out
Face is alternatively arranged along the optical axis and the incidence surface, which extends to the light-emitting surface from the incidence surface and surround the optical axis, should
Reflecting surface have it is several can by incidence and come light total reflection reflecting segment and it is several for destroy light generate total reflection
Optical texture, have offset between the wantonly two adjacent reflecting segments.
2. lens of car light as described in claim 1, it is characterised in that：The reflecting surface include two between left and right every first reflection
Portion and second reflecting part being connected between the first reflecting part root edge, it is second anti-that the optical texture is formed in this
Penetrate portion.
3. lens of car light as described in claim 1, it is characterised in that：The optical texture is in tandem and left and right is to growing to prolonging
It stretches, each optical texture defines one or so the chase to extension.
4. lens of car light as claimed in claim 3, it is characterised in that：Each optical texture has one backwards and can supply to be somebody's turn to do
The side to light and a shady face facing forward that the light of illuminating part passes through are with wherein between any two adjacent optical textures
The shady face of one side to light adjacent to another.
5. lens of car light as claimed in claim 4, it is characterised in that：The extending direction of the side to light of each optical texture
It is greater than 18 degree with an acute angle of the extending direction of the optical axis.
6. lens of car light as described in claim 1, it is characterised in that：The optical texture is the light for making the illuminating part
Generate the texture of diffusion.
7. lens of car light as described in claim 1, it is characterised in that：The light-emitting surface includes one and connects the reflecting surface and surround
The anchor ring portion of the optical axis and one are located on the optical axis and by the center faces that the anchor ring portion surrounds, which is
One curved surface, the anchor ring portion can for by the incidence surface this enter light envelope surface portion enter and by the light from the reflective surface
Pass through, center face can pass through for the light entered by the light inputting end face of the incidence surface.
8. lens of car light as claimed in claim 7, it is characterised in that：The anchor ring portion of the light-emitting surface is a plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710171979.2A CN108916805B (en) | 2017-03-22 | 2017-03-22 | Car light lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710171979.2A CN108916805B (en) | 2017-03-22 | 2017-03-22 | Car light lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108916805A true CN108916805A (en) | 2018-11-30 |
| CN108916805B CN108916805B (en) | 2021-03-30 |
Family
ID=64402339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710171979.2A Active CN108916805B (en) | 2017-03-22 | 2017-03-22 | Car light lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108916805B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339748A (en) * | 2020-02-18 | 2021-09-03 | 堤维西交通工业股份有限公司 | Vehicle lamp device |
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| CN113339748A (en) * | 2020-02-18 | 2021-09-03 | 堤维西交通工业股份有限公司 | Vehicle lamp device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108916805B (en) | 2021-03-30 |
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