阅读说明：本技术 一种带有焦距渐变反射式光学系统的汽车信号灯 (signal lamp with gradually-changed focal length reflecting optical system for automobile ) 是由 陆侃 于 2019-11-07 设计创作，主要内容包括：本发明提供一种带有焦距渐变反射式光学系统的汽车信号灯,包括数量至少为一颗的LED光源、反射系统、内透镜和外透镜,所述LED光源设置在反射系统的焦点处,所述内透镜设置在反射系统的前方,所述外透镜设置在内透镜的前方,LED光源发出光,经反射系统反射,再经内透镜透射,最后经外透镜透射射出,所述反射系统是由至少一个子反射镜组成,所述子反射镜由焦距不同并且逐渐变化的条状抛物面子反射镜构成,所述条状抛物面子反射镜的焦距为由小变大或由大变小,其焦距变化趋势使每两个抛物面子反射镜之间的台阶子面面积最小化。优化了反射式光学系统汽车信号灯尤其是在侧方视角上的点亮效果,提高了信号灯整体点亮均匀性。(The invention provides automobile signal lamps with a focus-distance gradually-changed reflection type optical system, which comprise at least LED light sources, a reflection system, an inner lens and an outer lens, wherein the LED light sources are arranged at the focus of the reflection system, the inner lens is arranged in front of the reflection system, the outer lens is arranged in front of the inner lens, the LED light sources emit light, the light is reflected by the reflection system, then is transmitted by the inner lens, and finally is transmitted and emitted by the outer lens, the reflection system is composed of at least sub-reflectors, each sub-reflector is composed of strip-shaped parabolic sub-reflectors with different focal distances and gradually changed, the focal distance of each strip-shaped parabolic sub-reflector is changed from small to large, the change trend of the focal distance enables the area of a step sub-surface between every two parabolic sub-reflectors to be minimized, the lighting effect of the reflection type optical system automobile signal lamps, particularly on the side view angles, is optimized, and the overall lighting uniformity of the signal lamps is improved.)

The automobile signal lamp with the focal length gradually-changing reflection type optical system is characterized by comprising at least LED light sources (1), a reflection system (2), an inner lens (3) and an outer lens (4), wherein the LED light sources (1) are arranged at the focus of the reflection system (2), the inner lens (3) is arranged in front of the reflection system (2), the outer lens (4) is arranged in front of the inner lens (3), the LED light sources (1) emit light, the light is reflected by the reflection system (2), then is transmitted by the inner lens (3), and finally is transmitted and emitted by the outer lens (4), the reflection system (2) is composed of at least sub-reflectors, each sub-reflector is composed of strip parabolic sub-reflectors with different and gradually-changed focal lengths, the focal lengths of the strip parabolic sub-reflectors are changed from small to large, and the change trend of the focal lengths of the strip parabolic sub-reflectors minimizes the area of a step between every two parabolic sub-reflectors.

2. The signal lamp with gradually-varying focal length reflective optical system as claimed in claim 1, wherein the reflective system (2) is a reflective mirror system or a thick-walled reflective optical system.

3. The signal lamp with gradually varying focal length reflective optical system as claimed in claim 1, wherein the increment of variation of the focal length of the strip-shaped parabolic sub-reflectors is fixed or gradually increased.

4. The signal lamp with gradually-varying focal length reflective optical system as claimed in claim 2, wherein the reflective system (2) is a thick-walled reflective optical system made of plexiglass or PC.

5. The signal lamp with gradually-changed focal length reflective optical system as claimed in claim 2, wherein the reflective system (2) is made of materials selected from PC, PMMA or ABS, and the reflective system (2) is plated with aluminum and added with dermatoglyph.

6. The automobile signal lamp with gradually-changed focal length reflective optical system as claimed in claim 1, wherein the inner lens (3) is made of PC or PMMA with dermatoglyph on its front or back or both.

7. The automotive signal lamp with a gradually focusing and reflecting optical system as claimed in any one of claims 2, 4 or 5 and , wherein the focal length of the reflecting system (2) varies from 1mm to 50 mm.

Technical Field

The invention relates to the field of automobile tail lamps, in particular to an automobile signal lamp with a focal length gradually-changing reflection type optical system.

Background

With the increasing demand of consumers for innovative automobile models, the models of automobile signal lamp products are becoming more and more different. Under the condition of meeting the requirements of various functional laws and regulations of the signal lamp, a designer mainly improves the lighting effect of various functions so as to design a product with pleasing quality and visual effect while matching the shape.

As is well known, LED light sources are increasingly used in , and the advantages of the LED light sources include energy conservation, environmental protection, long service life, shock resistance, safety, small volume, flexible application, convenient and fast working mode, easy matching, compact and flexible design and the like.

the side wall of the reflector of the reflective optical system automobile signal lamp, i.e. the step surface, is easy to form a dark area at the outer visual angle when the lamp is lighted, and the uniformity of the lighting effect is poor.

The technical solution of the background patent CN1401935A is that the uniformity of the side view lighting effect is poor because the step surface of the side view causes a lighting dark area, which is obvious and easy to be complained by customers and consumers, and the requirement of consumers for a more beautiful and pleasant signal is not met, and the problem existing in the patent is commonly found in the reflective optical system automobile signal lamp, especially when the side view lighting is performed.

Disclosure of Invention

In order to solve the above problems, the present invention provides car signal lamps with a gradually-varying focal length reflective optical system, wherein the sub-reflectors are made of strip parabolic sub-reflectors with different and gradually-varying focal lengths, the focal length of the strip parabolic sub-reflectors is changed from small to large, and the variation trend of the focal length minimizes the step sub-surface area between every two parabolic sub-reflectors, so as to optimize the lighting effect of the car signal lamps with the reflective optical system, especially at the side viewing angle, improve the overall lighting uniformity of the signal lamp, and solve the problem that the outer viewing angle forms a dark area when the ordinary reflectors are lighted.

The invention provides automobile signal lamps with a focus-distance-gradual-change reflection type optical system, which comprise at least LED light sources, a reflection system, an inner lens and an outer lens, wherein the LED light sources are arranged at the focus of the reflection system, the inner lens is arranged in front of the reflection system, the outer lens is arranged in front of the inner lens, the LED light sources emit light, the light is reflected by the reflection system, then is transmitted by the inner lens, and finally is transmitted and emitted by the outer lens, the reflection system is composed of at least sub-reflectors, each sub-reflector is composed of strip parabolic sub-reflectors with different and gradually-changed focal distances, the focal distance of each strip parabolic sub-reflector is changed from small to large or from large to small, the change trend of the focal distance enables the area of a step sub-surface between every two parabolic sub-reflectors to be minimized, and the top end of a strip parabolic sub-reflector closest to the front sub-reflector of the back sub-reflectors is connected with the top end of a strip parabolic sub-reflector closest to the front sub-reflectors, so that the area of the step parabolic sub-reflectors between every two parabolic sub-reflectors is minimized.

, the improvement is that the reflecting system is a reflective mirror optical system or a thick-walled reflective optical system.

, the improvement is that the increment of the change of the focal length of the strip-shaped parabolic sub-reflector is fixed or gradually increased, and the increment can be any, and can also be in accordance with definite formula or algorithm.

the improvement is that when the reflecting system is a thick-wall reflecting optical system, the thick-wall material is organic glass material or PC material.

is further improved in that the reflecting system is made of materials of PC, PMMA or ABS, the colors of the materials are not limited, the reflecting system can be a white material reflecting system, a red material reflecting system and the like, the reflecting system is aluminized, and dermatoglyph is added to increase the overall uniformity in step , and the material of the reflector can also be white PC material and is accompanied by the dermatoglyph.

the improvement is that the inner lens is made of PC or PMMA with dermatoglyph on its front or back or both sides.

A further improvement is that the focal length of the reflective system varies from 1mm to 50 mm.

The invention has the beneficial effects that: the sub-reflectors are composed of strip parabolic sub-reflectors with different focal lengths and gradually changed, the focal lengths of the strip parabolic sub-reflectors are changed from small to large or from large to small, and the change trend of the focal lengths enables the area of the step sub-surface between every two parabolic sub-reflectors to be minimized, so that the lighting effect of the reflective optical system automobile signal lamp, particularly the lighting effect on the side visual angle is optimized, the overall lighting uniformity of the signal lamp is improved, and the problem that the outer visual angle forms a dark area when the common reflector is lighted is solved.

Drawings

Fig. 1 is a schematic diagram of an automotive signal lamp of a focal length graded reflective optical system of the present invention.

Fig. 2 is a schematic structural diagram of an automotive signal lamp of the focal length graded reflective optical system of the present invention.

Fig. 3 is a schematic diagram of an automotive signal lamp with a conventional retro-reflective optical system.

FIG. 4 is a schematic diagram of an automotive signal light for a focus graded mirror reflective optical system of an embodiment of the present invention.

Fig. 5 is a schematic view of an automotive signal lamp of a focal length gradually-thick-walled reflective optical system according to a second embodiment of the present invention.

Fig. 6 is a lighting effect diagram according to embodiment and embodiment two of the present invention.

Wherein: 1-LED light source, 2-reflection system, 3-inner lens, 4-outer lens.

Detailed Description

For the purpose of enhancing an understanding of the present invention, the present invention will now be described in further detail with reference to the following examples, which are provided for purposes of illustration only and are not intended to limit the scope of the present invention.