CN206386843U - Car light lens - Google Patents

Abstract

A lens for a car lamp comprises a light incident surface, a light emergent surface arranged at the front side of the light incident surface at intervals and a reflecting surface. The reflecting surface extends and is connected from the periphery of the light incident surface to the periphery of the light emergent surface and comprises two first reflecting surface parts which are vertically spaced and two second reflecting surface parts which are horizontally spaced and are respectively connected between the first reflecting surface parts, the first reflecting surface parts and the second reflecting surface parts are continuous and arc surfaces, and a cross section is formed between each first reflecting surface part and each second reflecting surface part, so that the reflecting surfaces are discontinuous surfaces. The light is reflected by the special structure of the reflecting surface by utilizing the total reflection principle, and the light utilization rate is good. And the reflecting surface has simple structure and optical design, and is convenient for production and manufacture.

Description

Lamp lens

technical field

The utility model relates to a lens, in particular to a lens for a car lamp which is applied to a car lamp and is used for transmitting the light of a luminous part.

Background technique

A conventional vehicle light includes a light-emitting element and a light lens for transmitting the light from the light-emitting element. The vehicle light lens includes a light incident surface and a light exit surface opposite to each other at a distance from front to back, and a reflective surface extended and connected from the light incident surface toward the light exit surface. After the light enters from the light-incident surface, it can be reflected by the reflective surface and emitted toward the light-emitting surface, so as to achieve the purpose of light transmission and light-emitting illumination.

And one kind of car light lens that utilizes the principle of total reflection to reflect light has a reflective surface that includes many connected reflective surfaces, usually eight reflective surfaces in design, so that the reflective surfaces constitute a multi-focus reflective surface. However, due to the design of eight reflective faces, the number is too large and too complicated, which makes its optical design difficult, especially when the curvature design of each reflective face is different, and the focal length design is different, it will cause more difficulty in design, and The lamp lens is also troublesome to manufacture, so it needs to be improved.

Contents of the invention

The purpose of the utility model is to provide a vehicle light lens with simple structure, simple optical design and convenient production.

The vehicle lamp lens of the present utility model comprises a light incident surface, a light exit surface arranged at intervals on the side of the light incident surface, and a reflective surface extending and connecting from the periphery of the light incident surface to the periphery of the light exit surface, the reflective surface It includes two first reflective surfaces spaced up and down, and two second reflective surfaces spaced left and right and respectively connected between the first reflective surfaces, the first reflective surface and the second reflective surface are continuous and For the curved surface, a gap is formed between each first reflective surface and the second reflective surface, so that the reflective surface is a discontinuous surface.

In the vehicle lamp lens described in the utility model, the light-emitting surface includes several diffusing protrusions arranged up, down, left, and right and protruding forward.

In the vehicle lamp lens of the present invention, the arc protrusion degree of the diffusion protrusion located at the central part of the light emitting surface is larger than the arc protrusion degree of the diffusion protrusions located at the left and right sides of the light emitting surface.

In the vehicle light lens described in the present invention, at least some of the diffusion protrusions respectively include a protruding area located at the most protruding center of the protruding area, and the protruding area gradually slopes backward from top to bottom.

In the vehicle lamp lens described in the present invention, the first reflective surfaces are vertically symmetrical to each other.

In the vehicle lamp lens described in the present invention, the second reflective surfaces are bilaterally symmetrical to each other.

In the vehicle lamp lens described in the utility model, each first reflective surface and each second reflective surface are a paraboloid.

In the vehicle lamp lens described in the present utility model, the incident surface includes several curved first blocks, and several second blocks extending backward from the first blocks and connecting to the reflective surface, so The second block is arranged vertically, left, and right around the first block.

The vehicle lamp lens of the present invention defines an optical axis passing through the light incident surface and the light output surface, and the first reflective surface and the second reflective surface are curved around the optical axis.

The vehicle light lens of the present invention further includes two protruding blocks protruding from the first reflecting surface, and the sizes of the protruding blocks are different.

The effect of the utility model is that the number of reflective surfaces can be reduced by arranging the first reflective surface and the second reflective surface, so the structure of the reflective surface is simple, the optical design is relatively simple, and it is more convenient to manufacture. Moreover, the structural design of the reflective surface can reflect light by using the principle of total reflection, and the light utilization rate is good.

Description of drawings

Other features and effects of the present utility model will be clearly presented in the implementation manner with reference to the drawings, wherein:

Fig. 1 is a front perspective view of an embodiment of a vehicle lamp lens of the present invention;

Fig. 2 is a rear perspective view of this embodiment;

Fig. 3 is a front view of this embodiment;

Fig. 4 is a back view of this embodiment;

Fig. 5 is a side cross-sectional view illustrating the embodiment and a luminous element, and the arrows in the figure illustrate the light path;

FIG. 6 is a top sectional view illustrating the embodiment and the luminous element, and the arrows in the figure illustrate the light path.

detailed description

Referring to FIGS. 1-3 , an embodiment of the vehicle light lens of the present invention is one of the components of a vehicle light, and is used to transmit light from a light-emitting part 1 ( FIG. 5 ) of the vehicle light. The vehicle light lens of this embodiment includes a light incident surface 2 , a light exit surface 3 , a reflective surface 4 , and two protrusions 5 .

Referring to FIGS. 2 , 4 and 5 , the light incident surface 2 is curved forward and defines a mounting groove 20 corresponding to the light emitting element 1 . The light incident surface 2 includes several curved first blocks 21 , and several second blocks 22 extending backward from the first blocks 21 and connecting to the reflective surface 4 . The second block 22 is also arranged in a curved shape, and is arranged up, down, left, and right around the first block 21 . An optical axis L passing through the center of the light incident surface 2 and the light output surface 3 is defined, the second block 22 forms a ring around the optical axis L, and the light emitting element 1 is roughly located on the optical axis L.

Referring to FIGS. 3 , 5 , and 6 , the light-emitting surface 3 is arranged at intervals on the front side of the light-incident surface 2 , and includes several diffused protrusions 31 arranged up, down, left, and right and protruding forward. The degree of arc protrusion of the diffusion protrusion 31 located in the central part of the light emitting surface 3 is larger than that of the diffusion protrusion 31 located on the left and right sides of the light emitting surface 3 (shown by different color blocks in FIG. 3 ). Several of the diffusion protrusions 31 include a protruding area 311 located at the most protruding part of the center, the protruding area 311 gradually slopes backward from top to bottom, and the tapered design of the protruding area 311 is relatively straight up and down. In terms of design, the lighting angle of the emitted light can be increased by about 5 degrees. The advantage of this design is that due to the limited space on the vehicle for lamp installation, some installation spaces may cause the lamp lens to be installed. The light emitting surface 3 is not completely facing the front, but is slightly inclined downward. Therefore, the angle of the light emitting and illuminating is increased through the inclined design of the protruding area 311 in this embodiment, which can compensate the light emitting and illuminating angle, so that the light can shine straight ahead. That is to say, the oblique design of the protruding area 311 can compensate for the deviation of the light output angle caused by the installation environment.

Referring to Figures 2, 3, and 5, the reflective surface 4 extends and connects from the periphery of the light-incident surface 2 toward the periphery of the light-emitting surface 3, and includes two first reflective surfaces 41 spaced up and down and respectively connected to the protrusions 5, and Two second reflective surfaces 42 are spaced apart from each other and respectively connected between the top edge and the bottom edge of the first reflective surface 41 , and the second reflective surfaces 42 are respectively connected to the second block 22 . The first reflective surface 41 is connected with the second reflective surface 42 to form a ring and surround the light incident surface 2 . Both the first reflective surface 41 and the second reflective surface 42 are continuous and curved surfaces, and are curved around the optical axis L, so the first reflective surface 41 and the second reflective surface 42 are both central parts relative to Peripheral parts arc outwards. A discontinuity is formed between each first reflective surface 41 and the second reflective surface 42 , so that the reflective surface 4 is a discontinuous surface. In this embodiment, the first reflective surfaces 41 are vertically symmetrical to each other, and the second reflective surfaces 42 are bilaterally symmetrical to each other. Each first reflective surface 41 and each second reflective surface 42 are a paraboloid, so that the reflective surface 4 forms a paraboloid with multiple focal lengths.

The protruding blocks 5 protrude from the first reflective surface 41 respectively, and the sizes of the protruding blocks 5 are different. The protruding block 5 is used to assemble and combine with other bases in the car lamp. Through the different sizes of the two protruding blocks 5, the vehicle lamp lens of the present invention can be combined with the base body in a certain direction to ensure the installation direction of the lamp lens. correct.

Referring to Figures 3, 5, and 6, when the utility model is used, the light of the light-emitting element 1 enters the interior of the lamp lens from the incident surface 2, and is emitted toward the light-emitting surface 3 by the reflecting surface 4. The curvature and focal point of the first reflective surface 41 and the second reflective surface 42 are properly designed, which can effectively use the principle of total reflection to reflect light forward, increase light collection efficiency, and achieve better light utilization. Compared with the diffusion protrusions 31 on the left and right sides, the diffusion protrusions 31 in the center of the light-emitting surface 3 protrude forward, so the center of the light-emitting surface 3 has a better light diffusion effect. The part belongs to the light diffusion area, and the left and right sides have a better light collection effect to increase the brightness of the light. Generally speaking, since the front of the light-emitting part 1 corresponds to the central part in front of the car lamp, the light intensity at this part is relatively strong, while the light at the left and right sides is relatively weak. The light diffusion effect of the central part and the light collection effect of the left and right sides are improved, so that the light in the area directly in front of the headlight can be evenly distributed, and the light on the left and right sides can be strengthened.

In summary, by setting the first reflective surface 41 and the second reflective surface 42, the reflective surface 4 forms a quadruple focal length total reflection surface. Compared with the previous design of the eightfold focal length reflective surface, the reflective surface of the present invention The number of 41 and 42 is small (four in total), so the reflective surface 4 has a simple structure and a relatively simple optical design, which is more convenient for production and manufacture, and can also make the emitted light meet the requirements of laws and regulations. Furthermore, if any two, any three or four of the reflective surfaces 41, 42 have the same curvature, the optical design is simpler. In addition, the special structure of the reflective surface 4 and the light-emitting surface 3 are matched with each other, which can increase the light collection rate and make the illumination light uniform, so as to achieve a good illumination effect.

What is described above is only the embodiment of the utility model, and should not limit the scope of implementation of the utility model, that is, all simple equivalent changes and modifications made according to the claims of the utility model and the contents of the description are all Still belong to the scope of the present utility model.

Claims (10)

1. a kind of lens of car light, comprising：One incidence surface, the exiting surface that is positioned apart from front side of the incidence surface, and one The individual reflecting surface for extending connection from the incidence surface periphery towards the exiting surface periphery, it is characterised in that the reflecting surface is included on two Lower interval first reflection face, and two between left and right every and be connected to it is described first reflection face between second reflection Face, it is described first reflection it is facial and it is described second reflection face be all continuous and curved surface, each first reflecting surface Offset is formed between portion and the second reflection face, it is discrete surface to make the reflecting surface.

2. lens of car light as claimed in claim 1, it is characterised in that：The exiting surface includes several arrangements up and down and facing forward The prominent diffusion teat of arc.

3. lens of car light as claimed in claim 2, it is characterised in that：Positioned at the diffusion teat of the exiting surface central part Arc dash forward degree, more than the diffusion teat positioned at the exiting surface left and right sides arc dash forward degree.

4. lens of car light as claimed in claim 2, it is characterised in that：The wherein at least of the diffusion teat is several to be included respectively One be located therein entreating most highlight outburst area, the outburst area is from top to bottom gradually towards rear-inclined.

5. lens of car light as claimed in claim 1, it is characterised in that：Self is symmetrical for the first reflection face.

6. lens of car light as claimed in claim 1, it is characterised in that：The second reflection face is symmetrical each other.

7. the lens of car light as described in any claim in claim 1 to 6, it is characterised in that：Each first reflecting surface Portion is a parabola with each second reflection face.

8. lens of car light as claimed in claim 1, it is characterised in that：The incidence surface includes several the first curved blocks, with And several the second blocks for extending backwards from first block and connecting the reflecting surface, second block is around described first Block and arranged end up and down.

9. lens of car light as claimed in claim 1, it is characterised in that：One is defined by the incidence surface and the light of the exiting surface Axle, it is described first reflection it is facial and it is described second reflection face be all curved around the optical axis.

10. lens of car light as claimed in claim 1, it is characterised in that：The lens of car light is also provided projectingly respectively comprising two Projection on the described first reflection face, the size of the projection is differed.