CN210179525U

CN210179525U - Composite optical system using double inner lenses

Info

Publication number: CN210179525U
Application number: CN201920933233.5U
Authority: CN
Inventors: Xuan Tong; 仝旋
Original assignee: Magneti Marelli Automotive Components Wuhu Co Ltd
Current assignee: Magneti Marelli Automotive Components Wuhu Co Ltd
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2020-03-24
Anticipated expiration: 2029-06-20

Abstract

The utility model provides a compound optical system using double inner lenses, which comprises a first light source, a second light source, a reflecting bowl, a transparent inner lens and a wide light guide, wherein the wide light guide has the function of one inner lens, vertical bar patterns are arranged on the wide light guide, the transparent inner lens is arranged between the wide light guide and the reflecting bowl, a horizontal bar pattern is arranged on the transparent inner lens, and the second light source is arranged at the light inlet end of the wide light guide to realize an optical function; the light source I is placed at the focus of the reflecting bowl, light rays emitted by the light source I are converged and parallelly emitted through the paraboloid of the reflecting bowl, are subjected to primary diffusion through the transverse stripe patterns of the transparent inner lens, pass through air to the wide light guide and are subjected to secondary diffusion through the vertical stripe patterns on the rear surface of the wide light guide, and then are emitted, so that the other optical function of the multiplexing system is realized. Uniformity is ensured. The diffusion loss due to the depth is reduced, and at the same time, the whole optical system improves the optical efficiency and increases the diffusion angle of light.

Description

Composite optical system using double inner lenses

Technical Field

The utility model relates to an automotive lighting field especially relates to an use compound optical system of two inner lens.

Background

At present, with the popularization of LED light sources on vehicle lamps, more possibilities are provided for the design of vehicle lamp schemes. In view of the fact that the functions of the current car lamp are no longer lighting and indicating functions, the design concept of the model design is realized, the design of the car lamp model tends to be concise, the space reserved for the design is reduced continuously, and the reuse of the car lamp functions tends to be achieved.

Originally, the use of a reflective structure alone in combination with two defocused light sources, each implementing different functions, was widely applied to compound optical systems with its good light efficiency, but the uniformity was not sufficient. As the demand for the lighting effect of the vehicle lamp has become more severe in recent years, the above-described reflection type structure has not been able to satisfy the demand of the designer. Light guides are favored by designers as compound optical systems because of their good uniformity, and optical systems that use light guides alone in combination with two out-of-focus light sources at the light input end to achieve multiplexing effects have begun to be used because of their improved uniformity over front-reflecting structures, but also because their light efficiency is too low, which doubles the risk of optical input and heat resistance, and are therefore limited to high-end vehicles with large lamp body spaces. From this, utility model one kind can realize optical multiplexing effect, high light efficiency simultaneously, and the optical system that the homogeneity is good has become the problem that needs to solve at present urgently.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model aims to provide a composite optical system using double inner lenses, wherein a light source is used as one of the functions through a wide light guide, and the good uniformity of the light source can be ensured; the reflecting bowl, the other light source at the focus of the reflecting bowl, the transparent inner lens and the wide light guide are integrated as a whole to serve as a second function, light rays emitted by the light source are converged by the parabolic reflecting bowl without optical patterns, the light rays are firstly diffused for the first time through the transparent inner lens with the transverse stripes and then are viewed as vertical stripes through optical teeth of the light guide to be diffused for the second time, the light rays are diffused for the second time through the two times of diffusion, the better uniformity can be realized, the equivalent patterns formed by the two times of diffusion are reduced, the diffusion loss caused by the fact that the patterns are made on the reflecting bowl is reduced, and therefore.

The utility model provides an use compound optical system of two inner lens, including light source one, light source two, reflection bowl, transparent inner lens and wide light guide, wherein wide light guide is as the function of an inner lens, there is vertical stripe decorative pattern on the wide light guide, transparent inner lens arrange in the wide light guide with between the reflection bowl, there is horizontal stripe decorative pattern on the transparent inner lens, place light source two at wide light guide income light end and realize an optical function, can guarantee its good homogeneity; a first light source is placed at the focus of the reflecting bowl, light rays emitted by the first light source are converged and emitted in parallel through the paraboloid of the reflecting bowl 2, are diffused for the first time through the transverse stripe patterns of the transparent inner lens, pass through air to the wide light guide and are diffused for the second time through the vertical stripe patterns on the rear surface of the wide light guide, and then are emitted, so that the other optical function of the multiplexing system is realized.

The further improvement is that the reflecting bowl is a paraboloid without optical patterns and is used for converging light rays emitted by the light source, so that the diffusion loss is reduced, and the optical efficiency is improved.

The further improvement is that one side and only one side of the transparent inner lens are provided with patterns and are transverse bar patterns, and the transverse bar patterns are used for matching with the vertical bar patterns of the wide light guide to form fisheye diffusion patterns, so that the uniformity is improved.

The further improvement is that the transverse stripes on one side of the transparent inner lens can be saw teeth or arc-shaped stripes and are used for matching with the vertical light guide teeth to form fisheye diffusion patterns so as to improve the uniformity.

The further improvement is that the transverse stripe patterns of the transparent inner lens can be saw teeth or arc-shaped stripes and are used for matching with the vertical light guide teeth to form fisheye diffusion patterns so as to improve the uniformity.

The other side of the transparent inner lens can be a transparent smooth surface without optical patterns or a surface with optical dermatoglyph, and the other side of the transparent inner lens is used for increasing light diffusion and improving uniformity.

In a further development, the transverse ribs may be located on the inside of the transparent inner lens or on the outside of the transparent inner lens, but may be on only one side of the transparent inner lens.

The further improvement is that the wide light guide can be an oval or planar light guide, which increases the light transmittance and improves the optical efficiency of the system.

The further improvement lies in, the utility model discloses an optical system, through make full use of with the wide light guide of the horizontal stripe line cooperation of transparent inner lens vertical stripe decorative pattern formation fish eye diffusion decorative pattern, its effect is superior to and does the decorative pattern on the paraboloid of reflection bowl, the reason is because the optical pattern is done on the reflection bowl because the degree of depth of reflection bowl can cause the diffusion loss of light, light-emitting angle also can receive the restriction, and the utility model discloses remove the optical pattern on the reflection bowl, done the horizontal stripe decorative pattern in one side of transparent inner lens simultaneously, not only reduce and improve because the diffusion loss that the degree of depth caused, also become the light-emitting angle that has increased light mutually, improved whole multiplexing optical system's light efficiency to light after twice diffusion stack makes the outgoing has very high homogeneity.

The light source I can be amber to realize the function of a steering lamp, red to realize the functions of a tail lamp position lamp and a tail lamp stop lamp, and white to realize daytime running lamps, front position lamps and back running lamps; the second light source may be amber to realize a turn light function, red to realize a tail light position light and a tail light stop light function, white to realize a daytime running light, a front position light and a back light, and the first light source and the second light source may be different in color to realize an optical multiplexing function.

The further improvement is that the colors of the first light source and the second light source can be the same, and at this time, the light source models of the first light source and the second light source are different, or the currents flowing through the first light source and the second light source are different, or the PWM pulse width adjustments of the first light source and the second light source are different, so that different lighting brightness is realized, and the function multiplexing of the whole optical system is realized.

In a further improvement, the material of the transparent inner lens can be polycarbonate (namely PC) or polymethyl methacrylate (namely PMMA); the material of the wide light guide may be polycarbonate (i.e. PC) or polymethylmethacrylate (i.e. PMMA).

The utility model has the advantages that: the light source II which shares the same light-emitting surface, the wide light guide and the focus thereof realizes an optical function, and the uniformity is ensured; the first reflecting bowl and the light source at the focus thereof realize another optical function, and the function multiplexing of the optical system is realized. On the basis of the function multiplexing, the wide light guide is used as an inner lens, and a transparent inner lens with transverse bar patterns on one side and a smooth surface without optical patterns is added, so that an optical system using the double inner lenses is formed, and a reflecting bowl without the optical patterns is matched for use, so that the diffusion loss caused by the depth is reduced, meanwhile, the whole optical system improves the optical efficiency and increases the diffusion angle of light, and meanwhile, the transverse bar patterns of the transparent inner lens are matched with the fisheye diffusion patterns formed by the vertical bar patterns of the wide light guide to ensure and improve the uniformity.

Drawings

Fig. 1 is a backside isometric view of a dual inner lens complex function optical system of the present invention.

Fig. 2 is a top view of the dual inner lens complex function optical system of the present invention.

Fig. 3 is a sectional view taken along line a-a of the dual inner lens complex function optical system of fig. 2 according to the present invention.

Fig. 4 is a sectional view of the dual inner lens complex function optical system of fig. 2 according to another embodiment of the present invention taken along line a-a.

Fig. 5 is a partially enlarged view of a region B of the dual inner lens complex function optical system of fig. 2 according to the present invention.

Wherein: 1.1-light source one; 1.2-light source two; 2-a reflective bowl; 3-a transparent inner lens; 31-horizontal bar pattern; 4-wide light guide; 41-vertical bar pattern.

Detailed Description

In order to deepen the understanding of the present invention, the following embodiments will be combined to make the present invention do further details, and the present embodiment is only used for explaining the present invention, and does not constitute the limitation of the protection scope of the present invention.

As shown in fig. 1 to 5, this embodiment provides a compound optical system using a dual inner lens, which includes a first light source 1.1, a second light source 1.2, a reflective bowl 2, a transparent inner lens 3, and a wide light guide 4, wherein the wide light guide 4 is different from a commonly used circular light guide, and in this embodiment, is an elliptical wide light guide, which can increase the light transmittance and improve the optical efficiency of the system. The reflecting bowl 2 is a paraboloid without optical patterns, one side of the transparent inner lens 3 is provided with transverse bar patterns 31 with optical effects, the other side of the transparent inner lens is a smooth surface without optical patterns, the transparent inner lens 3 is positioned between the light guide 4 and the reflecting bowl 2, a light source two 1.2 is placed at the light incoming end of the wide light guide to realize one optical function of the optical system multiplexing of the embodiment, and a light source one 1.1 is placed at the focal point of the reflecting bowl 2 to realize the other optical function of the optical system multiplexing of the embodiment.

As can be seen from the enlarged view of fig. 5, the transparent inner lens 3 has transverse ribs 31 and the wide light guide 4 has vertical ribs 41. In the embodiment of fig. 3, the transverse rib 31 is located on the inner side of the transparent inner lens 3, and in the other embodiment of fig. 4, the transverse rib 31 is located on the outer side of the transparent inner lens 3.

As shown in fig. 3, light emitted from the light source i 1.1 is converged and emitted in parallel through the optical pattern-free paraboloid of the reflection bowl 2, and is diffused for the first time through the horizontal stripe patterns 31 on the inner side of the transparent inner lens 3, the diffused light is emitted from the optical pattern-free smooth surface on the outer side of the transparent inner lens 3, and the light passes through the air to the wide light guide 4 and is diffused for the second time through the light guide teeth on the rear surface thereof, i.e., the vertical stripe patterns 41, and then is emitted, thereby realizing the first optical function of the multiplexing optical system of the present embodiment. After the light emitted from the second light source 1.2 enters the wide light guide 4, the light is emitted from the wide light guide 4 in the forward direction by the action of the vertical stripe pattern 41, and the light path diagram of the second light source 1.2 is not shown due to the common knowledge known to those skilled in the art, and it realizes the second optical function of the multiplexing optical system of the present embodiment.

In another embodiment as shown in fig. 4, the basic optical path and principle are the same as those of fig. 3, except that the light rays converged and emitted in parallel from the non-optical-pattern paraboloid of the reflection bowl 2 pass through the non-optical-pattern smooth surface on the inner side of the transparent inner lens 3 to be diffused for the first time to the horizontal stripes on the outer side of the transparent inner lens 3, then pass through the air to reach the wide light guide 4 and pass through the light guide teeth on the rear surface, namely the vertical stripes 41, to be diffused for the second time, and then are emitted.

Instead of using a reflecting bowl alone to combine two defocused light sources or using a light guide alone to combine two defocused light sources to achieve a multiplexing effect, an optical system for achieving optical function multiplexing is used, wherein the reflecting bowl 2 plus the wide light guide 4, the light source I1.1 and the light source II 1.2 are respectively positioned at the focal points of the reflecting bowl 2 and the wide light guide 4, and a transparent inner lens 3 is additionally arranged between the reflecting bowl 2 and the wide light guide 4, so that the problems of uniformity and light effect caused by defocusing of the light sources are solved and improved.

The reflecting bowl 2 is a paraboloid without optical patterns and is used for converging light rays emitted by the light source I1.1, so that the diffusion loss is reduced, and the optical efficiency is improved.

A transparent inner lens 3 is added between the reflection bowl 2 without optical patterns and the wide light guide 4, and one side of the transparent inner lens 3 is provided with a horizontal stripe pattern 31, and the other side is a smooth surface without optical patterns, and as can be seen by fully utilizing the partial enlarged view of fig. 5, the horizontal stripe pattern 31 on one side of the transparent inner lens 3 is matched with the vertical stripe pattern 41 of the wide light guide to form an integral fish eye diffusion pattern, which has better effect than the pattern on the paraboloid of the reflection bowl 2, because the optical patterns on the reflection bowl 2 can cause the light diffusion loss due to the depth of the reflection bowl, the light-emitting angle can be limited, but the optical patterns on the reflection bowl 2 are removed, and the horizontal stripe pattern is made on one side of the transparent inner lens 3, not only the diffusion loss caused by the depth is reduced and improved, but also the light-emitting angle of the light is increased, the light efficiency of the whole multiplexing optical system is improved, and the emergent light rays have high uniformity due to twice diffusion and superposition.

The smooth surface of one side of the transparent inner lens 3 without the optical patterns is provided with the dermatoglyph, and the whole optical system can further ensure, improve and improve the uniformity on the basis of improving the light efficiency of the optical system after the dermatoglyph is added.

The wide light guide and the light source II 1.2 at the focus thereof realize one optical function, and the reflecting bowl 2 and the light source I1.1 at the focus thereof realize the other optical function, so that the function multiplexing of the optical system is realized; the wide light guide 4 functions as an inner lens, and a transparent inner lens 3 with a transverse stripe pattern 31 on one side and a smooth surface without optical patterns on the other side is added to form an optical system using double inner lenses, and a reflection bowl 2 without optical patterns is matched for use, so that the whole optical system has high optical efficiency on the basis of realizing multiplexing, and meanwhile, the uniformity is ensured and improved.

The position of the first light source 1.1 is at the focus of the reflecting bowl 2, and the number of the first light sources 1.1 is 21.

The color of the light source I1.1 is dark red, so that the function of a tail lamp brake lamp is realized; the color of the second light source 1.2 is dark red, and the function of a tail light position lamp is achieved. It should be noted that the LED models of the first light source 1.1 and the second light source 1.2 are different, and although they are dark red, the brightness when lighting is different, so that the function of a tail lamp stop lamp requiring higher brightness and the function of a tail lamp position lamp requiring common relative brightness are respectively realized.

The material of the transparent inner lens 3 is polycarbonate, and the material of the wide light guide 4 is polycarbonate.

Claims

1. A compound optical system using dual inner lenses, comprising a first light source (1.1), a second light source (1.2), a reflective bowl (2), a transparent inner lens (3) and a wide light guide (4), characterized in that: the wide light guide (4) has the function of an inner lens, vertical stripe patterns (41) are arranged on the wide light guide (4), the transparent inner lens (3) is arranged between the wide light guide (4) and the reflecting bowl (2), transverse stripe patterns (31) are arranged on the transparent inner lens (3), and a second light source (1.2) is placed at the light inlet end of the wide light guide (4) to realize an optical function; the light source I (1.1) is placed at the focus of the reflecting bowl (2), light rays emitted by the light source I (1.1) are converged through the paraboloid of the reflecting bowl (2) and emitted in parallel, the light rays are subjected to primary diffusion through the transverse stripe patterns (31) of the transparent inner lens (3), the light rays penetrate through air to enter the wide light guide (4) and are subjected to secondary diffusion through the vertical stripe patterns (41) on the rear surface of the wide light guide, then the light rays are emitted, and the other optical function of the multiplexing system is achieved.

2. A compound optical system using dual inner lenses, as claimed in claim 1, wherein: the reflecting bowl (2) is a paraboloid without optical patterns and is used for converging light rays emitted by the light source, reducing light ray diffusion loss and improving optical efficiency.

3. A compound optical system using dual inner lenses, as claimed in claim 1, wherein: one side and only one side of the transparent inner lens (3) are provided with optical patterns and are transverse bar patterns (31) which are used for forming fisheye diffusion patterns by matching with the vertical bar patterns (41) of the wide light guide (4) so as to improve the uniformity.

4. A compound optical system using dual inner lenses, as claimed in claim 3, wherein: the transverse stripe patterns (31) of the transparent inner lens (3) are saw teeth or arc-shaped stripes and are used for forming fisheye diffusion patterns in cooperation with the vertical light guide teeth, and uniformity is improved.

5. A compound optical system using dual inner lenses, as claimed in claim 3, wherein: the other side of the transparent inner lens (3) is a transparent smooth surface without optical patterns or a surface with optical dermatoglyph, and the transparent smooth surface is used for increasing light diffusion and improving uniformity.

6. A compound optical system using dual inner lenses, as claimed in claim 1, wherein: the wide light guide (4) is an elliptical or a planar light guide.

7. A compound optical system using dual inner lenses, as claimed in claim 1, wherein: the color of the first light source (1.1) is amber or red or white, the color of the second light source (1.2) is amber or red or white, and the colors of the first light source (1.1) and the second light source (1.2) are different, so that the optical multiplexing function is realized.

8. A compound optical system using dual inner lenses, as claimed in claim 1, wherein: the colors of the first light source (1.1) and the second light source (1.2) are the same, the light source models of the first light source (1.1) and the second light source (1.2) are different, or currents flowing through the first light source (1.1) and the second light source (1.2) are different, or PWM pulse width adjustments of the first light source (1.1) and the second light source (1.2) are different, so that different lighting brightness is achieved, and function multiplexing of the whole optical system is achieved.

9. A compound optical system using dual inner lenses as claimed in any one of claims 1, 3, 4 or 5, wherein: the transparent inner lens (3) is made of polycarbonate or polymethyl methacrylate; the material of the wide light guide (4) is polycarbonate or polymethyl methacrylate.