CN210771927U

CN210771927U - Car light total reflection optical system

Info

Publication number: CN210771927U
Application number: CN201921724757.XU
Authority: CN
Inventors: 魏茂炜; 陈嘉彬
Original assignee: HASCO Vision Technology Co Ltd
Current assignee: HASCO Vision Technology Co Ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-06-16
Anticipated expiration: 2029-10-15

Abstract

The utility model relates to a car light total reflection optical system, which comprises an LED and a condenser; the condenser includes: the first total reflection surface is arranged at the periphery of the LED; a second total reflection surface and a third total reflection surface which are opposite to the corresponding part of the first total reflection surface; the corresponding part of the light emitting surface is opposite to the second total reflection surface and the third total reflection surface; the second total reflection surface and the third total reflection surface are inclined surfaces or curved surfaces or surfaces added with patterns, and the angle between the surfaces and the light emergent direction is 45 degrees. The utility model discloses the light that LED sent forms collimated light through the total reflection surface, and collimated light is reflected by different total reflection surfaces respectively, divide into two bundles of different light, illuminates the decorative pattern in front, can illuminate a circular area with the LED of circular half area; patterns can be added on the total reflection surface, so that the lighting effect is optimized, and a better lighting effect is realized; time-series lighting can be realized.

Description

Car light total reflection optical system

Technical Field

The utility model relates to a total reflection optical system especially relates to a total reflection optical system of vehicle signal lamp device.

Background

With the development of the modern automobile industry, the requirements of consumers on the appearance shape and the safety performance of automobiles are more and more strict, and the automobile lamp is particularly important as the eye and the lighting system of the automobile shape. In the design process of the automobile lamp, the design and the cost are greatly limited, so that high requirements are put on the selection of the optical system.

For example, the annular light band is commonly used in the molding of automobile lamps, and the conventional optical system is usually in the form of a light guide or a conventional direct light condenser. The optical system in the light guide form realizes the lighting effect of the annular light band, the arrangement of the light source is a problem which is difficult to solve, and in order to realize lighting with better uniformity, the model needs to be sacrificed to disconnect the annular light source; if the circular shape is kept unchanged, the light guides need to be incident after being crossed, and lighting defects exist; traditional direct injection formula spotlight ware realizes that annular light area lights the effect, need all arrange the light source with the positive rear of light emitting area, directly penetrate and light whole annular light area, the drawback: the number of LEDs is large, and the cost is high.

As mentioned above, when the conventional direct-emitting condenser system used at present realizes the lighting effect of the annular light band, the LEDs need to be uniformly arranged behind the light-emitting surface, and the number of the used LEDs is large, which results in high cost.

Disclosure of Invention

The utility model aims at providing a car light total reflection optical system realizes satisfying the molding design requirement, realizes realizing the good homogeneity of lighting a lamp under the prerequisite of again can the control cost.

The utility model adopts the following technical proposal:

a total reflection optical system for a car lamp comprises an LED and a condenser; the condenser includes: the first total reflection surface 2-2 is arranged at the periphery of the LED; a second total reflection surface 2-6 and a third total reflection surface 2-7 which are opposite to the corresponding part of the first total reflection surface 2-2; the light-emitting surface 2-3 of which the corresponding part is opposite to the second total reflection surface 2-6 and the third total reflection surface 2-7; the second total reflection surface 2-6 and the third total reflection surface 2-7 are inclined surfaces or curved surfaces.

Preferably, the light emitted by the LED2-1 passes through the first total reflection surface 2-2 to form collimated parallel light; the parallel light is transmitted to the second total reflection surface 2-6 and the third total reflection surface 2-7, the light is totally reflected on the second total reflection surface 2-6 and the third total reflection surface 2-7 and is reflected to the light emitting surface 2-3, and patterns for diffusing the light are arranged on the surface of the light emitting surface 2-3.

Preferably, the light rays emitted to the second total reflection surface 2-6 and the third total reflection surface 2-7 are perpendicular to or at a small angle, such as 5-10 °, with the light rays emitted to the light emitting surface 2-3.

Preferably, the LED2-1 is mounted on the LED circuit board 2-4.

Further, the LED circuit board 2-4 is arranged on the lamp body 2-5.

Preferably, there is a row of concentrators along the annular direction, one or more LEDs corresponding to each concentrator.

Preferably, the light emitting surface 2-3 is annular.

The beneficial effects of the utility model reside in that:

1) the LED light emitted by the LED forms collimated light through the total reflection surface, the collimated light is respectively reflected by different total reflection surfaces and divided into two different beams of light, the front patterns are illuminated, and a circular area can be illuminated by the LED with a circular half area;

2) patterns can be added on the total reflection surface, so that the lighting effect is optimized, and a better lighting effect is realized;

3) time-series lighting can be realized.

Drawings

Fig. 1 is a schematic view of a ring light type of a vehicle lamp.

Fig. 2 is a schematic diagram of a prior art annular light band solution implemented by a direct-emitting condenser system. In the figure, 1-1-LED, 1-2-condenser Fresnel surface, 1-3-condenser light-emitting surface, 1-4-LED circuit board and 1-5-lamp body.

Fig. 3 is a schematic diagram of a total reflection optical system of a vehicle lamp according to the first embodiment. In the figure, 2-1-LED, 2-2-first total reflection surface, 2-3-light-emitting surface, 2-4-LED circuit board, 2-5-lamp body, 2-6 second total reflection surface, 2-7 third total reflection surface and 2-8 light.

FIG. 4 is a longitudinal sectional view of the total reflection optical system of the vehicular lamp according to the first embodiment.

FIG. 5 is a cross-sectional view of a total reflection optical system of a vehicular lamp according to the first embodiment.

FIG. 6 is a front view of the total reflection optical system of the vehicle lamp according to the first embodiment.

Fig. 7 is a left side view of the total reflection optical system of the vehicle lamp according to the first embodiment.

Fig. 8 is a top view of the total reflection optical system of the vehicle lamp according to the first embodiment.

FIG. 9 is a front view of the total reflection optical system of the vehicular lamp according to the second embodiment.

Fig. 10 is a left side view of the total reflection optical system of the vehicle lamp according to the second embodiment.

Fig. 11 is a plan view of the total reflection optical system of the vehicle lamp according to the second embodiment.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

Comparative example:

the conventional direct-type optical collector system used in the prior art, as shown in fig. 2, can realize a strip shape with a luminous width of 5mm-20mm, and the general optical principle is as follows: the LED1-1 is located on the circuit board 1-4, light emitted by the LED1-1 passes through the Fresnel surface 1-2 of the condenser to form collimated parallel light, the parallel light reaches the light-emitting surface 1-3 of the condenser, compound eye patterns or dermatoglyphs are added on the surface of the light-emitting surface 1-3 of the condenser, and the compound eye patterns or the dermatoglyphs are diffused through the patterns on the surface of the light-emitting surface to form a target light shape, so that optical design is completed.

When the lighting effect of the annular light band is realized, the LEDs need to be uniformly distributed behind the light emitting surface, the number of the used LEDs is large, and the cost is high.

The first embodiment is as follows:

referring to fig. 3-8, a total reflection optical system for a vehicle lamp includes an LED, a condenser; the condenser includes: the first total reflection surface 2-2 is arranged at the periphery of the LED; a second total reflection surface 2-6 and a third total reflection surface 2-7 which are opposite to the corresponding part of the first total reflection surface 2-2; the light-emitting surface 2-3 of which the corresponding part is opposite to the second total reflection surface 2-6 and the third total reflection surface 2-7; the second total reflection surface 2-6 and the third total reflection surface 2-7 are inclined surfaces.

In this embodiment, referring to FIG. 3, the light emitted from the LED2-1 passes through the first total reflection surface 2-2 to form collimated parallel light; the parallel light is transmitted to the second total reflection surface 2-6 and the third total reflection surface 2-7, the light is totally reflected on the second total reflection surface 2-6 and the third total reflection surface 2-7 and is reflected to the light emitting surface 2-3, and the surface of the light emitting surface 2-3 is provided with fisheye patterns or dermatoglyphs for diffusing the light.

Referring to fig. 3, the light rays emitted to the second total reflection surface 2-6 and the third total reflection surface 2-7 are perpendicular to the light rays emitted to the light emitting surface 2-3 or have a small angle, such as 5-10 °.

With continued reference to FIG. 3, the LED2-1 is mounted on an LED wiring board 2-4. The LED circuit board 2-4 is arranged on the lamp body 2-5.

Referring to fig. 8, there is a row of concentrators along the annular direction, each concentrator corresponding to one or more LEDs.

Referring to fig. 6, the light emitting surface 2-3 is annular.

The LED2-1 is located on the circuit board 2-4, light emitted by the LED2-1 forms collimated parallel light through the first total reflection surface 2-2, the parallel light is transmitted to the second total reflection surface 2-6 and the third total reflection surface 2-7, the light is totally reflected on the second total reflection surface 2-6 and the third total reflection surface 2-7, the light is reflected to the light outlet surface 2-3 of the condenser, fish eye patterns or dermatoglyphs are added on the surface of the light outlet surface 2-3 of the condenser, and the fish eye patterns or the dermatoglyphs are diffused through the patterns on the surface of the light outlet surface to form a target light shape, so that optical design is completed.

The technology is a brand-new twice total reflection optical system, can realize the lighting effect of the annular light band, and provides a better design scheme for designers.

Example two:

referring to fig. 9 to 11, the present embodiment is different from the first embodiment in that: the second total reflection surface 2-6 and the third total reflection surface 2-7 are curved surfaces. The two ends of the ring-shaped light pattern thus formed may protrude outside the optical system main structure, as shown in fig. 9.

The rest is the same as the first embodiment.

The above are preferred embodiments of the present invention, and those skilled in the art can make various changes or improvements on the above embodiments without departing from the general concept of the present invention, and these changes or improvements should fall within the scope of the present invention.

Claims

1. A car light total reflection optical system is characterized in that:

comprises an LED and a condenser;

the condenser includes:

the first total reflection surface (2-2) is arranged at the periphery of the LED;

a second total reflection surface (2-6) and a third total reflection surface (2-7) which are opposite to the corresponding part of the first total reflection surface (2-2);

a light-emitting surface (2-3) with the corresponding part facing the second total reflection surface (2-6) and the third total reflection surface (2-7);

the second total reflection surface (2-6) and the third total reflection surface (2-7) are planes or curved surfaces.

2. The vehicular lamp total reflection optical system according to claim 1, characterized in that: the included angle between the second total reflection surface (2-6) and the third total reflection surface (2-7) and the light outgoing direction is 45 degrees.

3. The vehicular lamp total reflection optical system according to claim 1, characterized in that: the light emitted by the LED (2-1) forms collimated parallel light through the first total reflection surface (2-2); the parallel light is transmitted to the second total reflection surface (2-6) and the third total reflection surface (2-7), the light is totally reflected on the second total reflection surface (2-6) and the third total reflection surface (2-7) and is reflected to the light emitting surface (2-3), and patterns for diffusing the light are arranged on the surface of the light emitting surface (2-3).

4. The vehicular lamp total reflection optical system according to claim 1, characterized in that: the light rays emitted to the second total reflection surface (2-6) and the third total reflection surface (2-7) are mutually vertical to the light rays emitted to the light emitting surface (2-3) or form a small angle of 5-10 degrees.

5. The vehicular lamp total reflection optical system according to claim 1, characterized in that: the LED (2-1) is arranged on the LED circuit board (2-4).

6. The vehicular lamp total reflection optical system according to claim 1, characterized in that: an array of concentrators is arranged along the annular direction, and each concentrator corresponds to one or more LEDs.

7. The vehicular lamp total reflection optical system according to claim 1, characterized in that: the light emitting surface (2-3) is annular.