CN212005550U

CN212005550U - Automobile welcome lamp with lighting and projection functions

Info

Publication number: CN212005550U
Application number: CN202020656006.5U
Authority: CN
Inventors: 林永发
Original assignee: Dongguan Jiahong Automobile Products Co ltd
Current assignee: Dongguan Jiahong Automobile Products Co ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-11-24
Anticipated expiration: 2030-04-27

Abstract

A car usher lamp that possesses illumination and projection function, car usher lamp includes: the shell to and set gradually light-emitting module (1), spotlight module (2), film (3) and imaging module (4) in the shell, imaging module (4) include: the imaging device comprises a first imaging lens (41) and a second imaging lens (42), wherein an incident surface (S1) of the first imaging lens (41) is a convex surface, an emergent surface (S2) is a convex surface, an incident surface (S3) of the second imaging lens (42) is a concave surface, and an emergent surface (S4) is a convex surface. The automobile welcome lamp has the advantages of large visual angle, wide illumination range, high resolution and small distortion, integrates the advantages of illumination and projection functions, can project clear patterns and can ensure good illumination effect.

Description

Automobile welcome lamp with lighting and projection functions

Technical Field

The utility model relates to a car usher lamp especially relates to a car usher lamp that possesses illumination and projection function.

Background

The existing automobile door is provided with a welcome lamp, when a driver or a passenger prepares to get on the automobile, the welcome lamp is instantly lighted to illuminate the ground when the automobile door is pulled open, and the welcome lamp is instantly extinguished when the automobile door is closed. In order to increase the appreciation of the greeting lamp, a film is installed in some greeting lamps, and a specific pattern is displayed after the film is lightened.

An automobile projection lamp disclosed in patent CN210165315U, comprising a housing, and a light emitting module, a light focusing module, a film module and an imaging module sequentially arranged in the housing along a light path; the imaging module comprises a first imaging lens and a second imaging lens, wherein the curvature radii of the first imaging lens and the second imaging lens are reciprocal, and the conical coefficients and the lens thickness of the first imaging lens and the second imaging lens are the same; the first imaging lens and the second imaging lens are arranged in mirror symmetry on the optical path. The imaging module adopts a Gaussian structure, and has a large aperture design, so that the system can obtain a larger light entering amount, and under the same light source, the imaging can be brighter. The dispersion of the Gaussian structure is small, and the uniformity of the colors of the projected patterns is ensured.

However, although the above-mentioned projection lamp for an automobile has improved brightness, the viewing angle is very limited, only 14 ° to 16 °, and a real illumination effect cannot be achieved. Moreover, the existing welcome lamps in the market have the problems, the welcome lamps are high in projection resolution (namely high in resolution) and small in distortion, the viewing angles (namely light spots) are small, the illuminated area is small, and the illumination effect is poor; for the greeting lamp with a larger visual angle, the resolution of the projection pattern is low, the distortion is large, and the projection effect is poor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses technical scheme is to above-mentioned condition, and in order to solve above-mentioned problem and provide a car usher lamp that possesses illumination and projection function, car usher lamp includes: the shell to and set gradually light-emitting module, spotlight module, film and the imaging module in the shell, imaging module includes: the imaging lens comprises a first imaging lens and a second imaging lens, wherein the first imaging lens is positioned between the film and the second imaging lens, the incident surface of the first imaging lens is a convex surface, the emergent surface of the first imaging lens is a convex surface, the incident surface of the second imaging lens is a concave surface, the emergent surface of the second imaging lens is a convex surface, the incident surface of the first imaging lens is provided with a first incident part and a second incident part, the second incident part is positioned in the middle of the first incident part, and the second incident part is arranged in a convex or concave manner relative to the first incident part.

Further, the incident surface and the exit surface of the first imaging lens are both aspheric surfaces, and the incident surface and the exit surface of the second imaging lens are both aspheric surfaces.

Further, the curvature of the incident surface of the first imaging lens is 2.406, and the curvature of the exit surface is 67.828; the curvature of the incident surface of the second imaging lens is 1.859, and the curvature of the exit surface of the second imaging lens is 2.604.

Further, the first incident part receives light rays with an incident angle of 36-75 degrees, and the second incident part receives light rays with an incident angle of 0-36 degrees.

Further, the focal length range of the imaging module is: 5.68 mm.

Further, the light condensation module is a Fresnel lens.

Further, the light-gathering modules are two same light-gathering convex lenses.

Further, the light-gathering module is a TIR lens.

After the technical scheme is adopted, the utility model discloses an effect is: the automobile welcome lamp with the structure has the advantages of large visual angle, wide illumination range, high resolution and small distortion, integrates the advantages of illumination and projection functions, can project clear patterns and can ensure good illumination effect.

Drawings

Fig. 1 is a schematic view of an automobile welcome lamp according to embodiment 1 of the present invention;

fig. 2 is a schematic diagram of a first imaging lens according to the present invention;

fig. 3 is a schematic diagram of an imaging optical path according to the present invention;

fig. 4 is a schematic view of an automobile welcome lamp according to embodiment 2 of the present invention;

fig. 5 is a schematic view of an automobile welcome lamp according to embodiment 3 of the present invention.

Detailed Description

It is specifically noted that the terms "first", "second" and "third" in the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. All directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture, and if the specific posture is changed, the directional indicator is changed accordingly.

The technical solution of the present invention is further described below by way of examples:

[ example 1 ]

The utility model provides a car usher lamp that possesses illumination and projection function, as shown in fig. 1, car usher lamp includes: the shell to and set gradually light-emitting module 1, spotlight module 2, film 3 and imaging module 4 in the shell, imaging module 4 includes: a first imaging lens 41 and a second imaging lens 42, the first imaging lens 41 is located between the film 3 and the second imaging lens 42, as shown in fig. 2 and 3, an incident surface S1 of the first imaging lens 41 is a convex surface, an exit surface S2 is a convex surface (i.e., a biconvex lens), an incident surface S3 of the second imaging lens 42 is a concave surface, an exit surface S4 is a convex surface (i.e., a meniscus lens), the incident surface S1 of the first imaging lens 41 has a first incident portion 411 and a second incident portion 412, the second incident portion 412 is located in the middle of the first incident portion 411, and the second incident portion 412 is disposed in a convex or concave manner with respect to the first incident portion 411. In the present embodiment, the second incident portion 412 is concavely disposed with respect to the first incident portion 411.

Referring to fig. 3, the light with a small angle enters the imaging module 4 through the first incident portion 411, is refracted by the first imaging lens 41 and the second imaging lens 42 and then imaged in the projection area, and the light with a large angle enters the imaging module 4 through the second incident portion 412 and is refracted by the first imaging lens 41 and the second imaging lens 42 and then imaged in the projection area. The resolution of the light rays with small angles is high, distortion is small, patterns can be displayed clearly, the visual angle of the light rays with large angles is large (light spots are large), the illumination range is wide, and the light rays with large angles are overlapped in the projection area, so that the good illumination effect can be ensured, and the resolution of the projected patterns can be ensured.

Specifically, the incident surface S1 and the exit surface S2 of the first imaging lens 41 are both aspheric, and the incident surface S3 and the exit surface S4 of the second imaging lens 42 are also both aspheric.

More specifically, the curvature of the incident surface S1 of the first imaging lens 41 is 2.406, and the curvature of the exit surface S2 is 67.828; the curvature of the incident surface S3 of the second imaging lens 42 is 1.859, and the curvature of the exit surface S4 is 2.604.

More specifically, the first incident portion 411 receives light having an incident angle of 36 ° -75 °, and the second incident portion 412 receives light having an incident angle of 0 ° -36 °.

More specifically, the focal length range of the imaging module 4 is: 5.68 mm.

The test shows that the visual angle of the automobile welcome lamp is 75 degrees, the resolution MTF is greater than 0.4(@50lp/mm), and the distortion rate is less than 2 percent. Therefore, the automobile welcome lamp with the structure has the advantages of large visual angle, wide illumination range, high resolution and small distortion, integrates the advantages of illumination and projection functions, can project clear patterns and can ensure a good illumination effect.

In the present embodiment, the light-condensing module 2 is a fresnel lens. The Fresnel lens can greatly reduce the thickness of the lens due to the unique structure of the diffraction surface, which is beneficial to reducing the total length of the whole product.

[ example 2 ]

As shown in fig. 4, in the present embodiment, most of the structures of the projection lamp of the automobile are the same as those of embodiment 1, and the light collecting module 2 is two identical light collecting convex lenses, which is different from embodiment 1. On the basis of not increasing the cost of opening the mould, the curvature of each lens is reduced through two identical convex lenses, and a more uniform light beam is projected.

[ example 3 ]

As shown in fig. 5, in the present embodiment, most of the structures of the automobile projection lamp are the same as those in embodiment 1, and the light collecting module 2 is a TIR lens, which is different from embodiment 1. The TIR lens has small volume, smooth surface shape and high utilization rate of light energy, and can increase the imaging uniformity by using the TIR lens as a condensing lens.

The above-mentioned embodiments are merely preferred examples of the present invention, and do not limit the scope of the present invention, so all equivalent changes or modifications made by the structure, features and principles of the present invention should be included in the claims of the present invention.

Claims

1. An automobile welcome lamp with illumination and projection functions, the automobile welcome lamp comprising: the shell to and set gradually light-emitting module (1), spotlight module (2), film (3) and imaging module (4) in the shell, imaging module (4) include: a first imaging lens (41) and a second imaging lens (42), the first imaging lens (41) being located between the film (3) and the second imaging lens (42), characterized in that: the incident surface (S1) of the first imaging lens (41) is convex, the emergent surface (S2) is convex, the incident surface (S3) of the second imaging lens (42) is concave, the emergent surface (S4) is convex, the incident surface (S1) of the first imaging lens (41) is provided with a first incident portion (411) and a second incident portion (412), the second incident portion (412) is located in the middle of the first incident portion (411), and the second incident portion (412) is arranged in a protruding or concave mode relative to the first incident portion (411).

2. The car usher lamp with illumination and projection functions of claim 1, wherein: the incident surface (S1) and the exit surface (S2) of the first imaging lens (41) are both aspheric, and the incident surface (S3) and the exit surface (S4) of the second imaging lens (42) are both aspheric.

3. The car usher lamp with illumination and projection functions of claim 2, wherein: a curvature of an incident surface (S1) of the first imaging lens (41) is 2.406, and a curvature of an exit surface (S2) is 67.828; the curvature of the incident surface (S3) of the second imaging lens (42) is 1.859, and the curvature of the exit surface (S4) is 2.604.

4. The car usher lamp with illumination and projection functions of claim 3, wherein: the first incident portion (411) receives light rays having an incident angle of 36 DEG to 75 DEG, and the second incident portion (412) receives light rays having an incident angle of 0 DEG to 36 deg.

5. The car usher lamp with illumination and projection functions of claim 4, wherein: the focal length range of the imaging module (4) is as follows: 5.68 mm.

6. The car usher lamp with illumination and projection functions of claim 1, wherein: the light condensation module (2) is a Fresnel lens.

7. The car usher lamp with illumination and projection functions of claim 1, wherein: the light-gathering modules (2) are two same light-gathering convex lenses.

8. The car usher lamp with illumination and projection functions of claim 1, wherein: the light-gathering module (2) is a TIR lens.