Focal length adjustable welcome lamp

Abstract

The utility model relates to the technical field of welcome lamps, and discloses a focal length adjustable welcome lamp which comprises an upper cover, a lens A is in lap joint with the top of the inner wall of the upper cover, a first gasket is arranged at the bottom of the lens A, the outer edge of the first gasket is fixedly connected with a lens barrel in a sleeved mode, and the outer edge of the lens barrel is in threaded connection with the inner wall of the upper cover. Through cooperative use of the upper cover and the lens barrel, threaded connection between the upper cover and the lens barrel, and threaded connection between the lower cover and the lens barrel, the distance between the condensing lens and the imaging lens is adjusted by rotating the upper cover and assisting the lens barrel, so that the device is assisted in spiral focusing, and the imaging definition is adjusted to the optimal state. The lens B is made of plastic with the refractive index higher than that of the lens A, the lens C and the lens D so as to assist the device in eliminating chromatic aberration, the imaging lens is composed of a concave lens and a convex lens so as to assist the device in stably eliminating chromatic aberration, the lens F is of a concave-convex structure, and the lens E is of a biconvex lens so as to improve the illumination uniformity of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of welcome lamps, in particular to a welcome lamp with adjustable focal length. Background Art

[0002] The welcome light is a new type of green light source for cars. It shines an LED light source onto the film, and then refracts the image on the film onto the illuminated object through the refraction of the lens.

[0003] During use, traditional welcome lights are mostly composed of a focusing lens, film, and imaging lens. The distances between the components are fixed, and the focal length cannot be adjusted according to the irradiation position, which affects the imaging clarity of the device. In addition, traditional devices, with the assistance of focusing lenses and imaging lenses, are prone to imaging chromatic aberration, which affects the stable imaging of the device. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a welcome lamp with adjustable focal length to solve the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical solution: an adjustable focal length welcome lamp, comprising an upper cover, a lens A is overlapped on the top of the inner wall of the upper cover, a gasket 1 is arranged at the bottom of the lens A, a lens barrel is fixedly sleeved on the outer edge of the gasket 1, and the outer edge of the lens barrel is threadedly connected to the inner wall of the upper cover, a lower cover is threadedly connected to the outer edge of the lens barrel, a lens F is embedded on the inner wall of the lower cover near the bottom, a gasket 4 is arranged on the top of the lens F, and a lens E is arranged on the top of the gasket 4;

[0006] The outer edge of the lens A is embedded in the inner wall of the lens barrel near the top, and a lens B is arranged at the bottom of the gasket 1, and the outer edge of the lens B is embedded in the inner wall of the lens barrel.

[0007] As a preferred technical solution of the utility model, a lens C is arranged at the bottom of the lens B, a gasket 2 is arranged at the bottom of the lens C, and the outer edge of the gasket 2 is embedded with the inner wall of the lens barrel.

[0008] As a preferred technical solution of the utility model, a lens D is provided at the bottom of the gasket 2, and the lens D is embedded in the bottom of the inner wall of the lens barrel.

[0009] As a preferred technical solution of the utility model, the outer edge of the gasket four is embedded in the inner wall of the lower cover near the bottom, the top of the lens E is provided with a gasket three, and the outer edge of the gasket three and the outer edge of the lens E are both embedded in the inner wall of the lower cover.

[0010] As a preferred technical solution of the utility model, a cavity is provided on the inner wall of the lower cover, and a film is embedded in the inner wall of the cavity.

[0011] As a preferred technical solution of the present utility model, the lens E and the lens F are condensing lenses, the lens F adopts a concave-convex structure, and the lens E adopts a biconvex lens.

[0012] As a preferred technical solution of the present invention, the lens A, lens B, lens C, and lens D are all imaging lenses, and the lens B is made of plastic with a higher refractive index than the lenses A, C, and D.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The adjustable focal length welcome lamp is used in conjunction with an upper cover and a lens barrel, wherein the upper cover and the lens barrel are threadedly connected, and the lower cover and the lens barrel are threadedly connected, so that by rotating the upper cover, the lens barrel is assisted to adjust the distance between the condensing lens and the imaging lens, thereby assisting the device in spiral focusing, so that the imaging clarity is adjusted to the best state.

[0015] 2. The adjustable focus welcome lamp, through the installation of lens B, uses lens B to use plastic with a higher refractive index than lens A, lens C, and lens D, so as to assist the device to eliminate chromatic aberration, and the imaging lens is composed of a concave lens and a convex lens, so as to assist the device to stably eliminate chromatic aberration, lens F adopts a concave-convex structure, and lens E adopts a double convex lens, so as to improve the lighting uniformity of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model of the welcome light with adjustable focal length;

[0017] Figure 2 This is a schematic diagram of the front section structure of the utility model of the adjustable focal length welcome lamp;

[0018] Figure 3 This is a schematic diagram of the partially disassembled structure of the utility model's adjustable focal length welcome lamp;

[0019] Figure 4 It is a schematic diagram of a three-dimensional structure of a gasket of the utility model with adjustable focal length welcome lamp;

[0020] Figure 5 It is a schematic diagram of the four-dimensional structure of the utility model of the washer adjustable focus welcome lamp.

[0021] In the figure: 1. upper cover; 2. lens A; 3. gasket 1; 4. lens B; 5. lens C; 6. gasket 2; 7. lens D; 8. lens barrel; 9. lower cover; 10. film; 11. gasket 3; 12. lens E; 13. gasket 4; 14. lens F. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 A welcome lamp with adjustable focal length comprises an upper cover 1, a lens A2 is overlapped on the top of the inner wall of the upper cover 1, a gasket 3 is arranged at the bottom of the lens A2, a lens barrel 8 is fixedly sleeved on the outer edge of the gasket 3, and the outer edge of the lens barrel 8 is threadedly connected to the inner wall of the upper cover 1, a lower cover 9 is threadedly connected to the outer edge of the lens barrel 8, a lens F14 is embedded on the inner wall of the lower cover 9 near the bottom, a gasket 4 13 is arranged on the top of the lens F14, a lens E12 is arranged on the top of the gasket 4 13, and the lens barrel 8 and the upper cover 1 are used in coordination, and the inner wall of the upper cover 1 is threadedly connected to the outer edge of the lens barrel 8, so that the auxiliary device performs spiral focusing, the lens A2, the lens B4, the lens C5, and the lens D7 form an imaging lens group, the lens E12 and the lens F14 form a condensing lens group, the imaging lens group and the condensing lens group form a lens group, and the field of view of the lens group is 30-60 degrees.

[0024] In a preferred embodiment, the outer edge of lens A2 is embedded in the inner wall of the lens barrel 8 near the top, a lens B4 is provided at the bottom of the gasket 3, and the outer edge of lens B4 is embedded in the inner wall of the lens barrel 8. By adding the gasket 3, the top and bottom of the gasket 3 are used to assist in protecting lens A2 and lens B4 respectively, so as to avoid collision and wear between lens A2 and lens B4, which would affect the stable use of the device.

[0025] In a preferred embodiment, a lens C5 is provided at the bottom of the lens B4, a gasket 26 is provided at the bottom of the lens C5, and the outer edge of the gasket 26 is embedded in the inner wall of the lens barrel 8. By using the lens C5 in coordination with the gasket 26 and by adding the gasket 26, the gasket 26 can be used to assist in protecting the lens C5.

[0026] In a preferred embodiment, a lens D7 is provided at the bottom of the gasket 2 6, and the lens D7 is embedded in the bottom of the inner wall of the lens barrel 8. By adding the gasket 2 6 and the lens D7, the convex surface on the top of the lens D7 and the convex surface on the bottom of the lens C5 are prevented from being worn, thereby affecting the stable use of the device.

[0027] In a preferred embodiment, the outer edge of gasket four 13 is embedded in the inner wall of the lower cover 9 near the bottom, and a gasket three 11 is provided on the top of the lens E12, and the outer edge of gasket three 11 and the outer edge of lens E12 are both embedded in the inner wall of the lower cover 9. By adding gasket three 11, auxiliary protection is provided for lens E12 to prevent the top convex surface of lens E12 from being worn.

[0028] In a preferred embodiment, a cavity is provided on the inner wall of the lower cover 9, and a film 10 is embedded in the inner wall of the cavity. By opening the cavity, the inner wall of the cavity can be utilized to assist in the installation of the film 10, and the lower cover 9 can be conveniently separated from the lens barrel 8 by rotating the lower cover 9, thereby assisting in the disassembly and replacement of the film 10.

[0029] In a preferred embodiment, lens E12 and lens F14 are focusing lenses, lens F14 adopts a concave-convex structure, and lens E12 adopts a double convex lens. By using lens E12 and lens F14 in combination, the concave-convex structure lens F14 and the double convex lens lens E12 are used to improve the lighting uniformity.

[0030] In a preferred embodiment, lens A2, lens B4, lens C5, and lens D7 are all imaging lenses, and lens B4 is made of plastic with a higher refractive index than lens A2, lens C5, and lens D7. By using lens A2, lens B4, lens C5, and lens D7 in combination, lens A2, lens B4, lens C5, and lens D7 form an imaging lens group, and the imaging lens group consists of a concave lens and a convex lens, thereby having a chromatic aberration aberration function, and lens B4 is made of plastic with a higher refractive index than lens A2, lens C5, and lens D7, thereby eliminating chromatic aberration.

[0031] Working principle: when the device is in use, rotate the upper cover 1, and the auxiliary lens barrel 8 adjusts the distance between the focusing lens and the imaging lens, thereby assisting the device in spiral focusing, so that the imaging clarity is adjusted to the best state, and it is convenient to rotate the lens barrel 8 after rotating the upper cover 1 to separate the auxiliary lens barrel 8 from the lower cover 9, so as to facilitate the replacement of the film 10 in the inner wall of the cavity, thereby rotating the lens barrel 8 and the upper cover 1 in the opposite direction, and rotating the upper cover 1 again according to the replacement of the film 10 to assist the device in conveniently adjusting the focal length.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welcome light with adjustable focal length, comprising an upper cover (1), characterized in that: The top of the inner wall of the upper cover (1) is overlapped with a lens A (2), the bottom of the lens A (2) is provided with a gasket 1 (3), the outer edge of the gasket 1 (3) is fixedly sleeved with a lens barrel (8), and the outer edge of the lens barrel (8) is threadedly connected to the inner wall of the upper cover (1), the outer edge of the lens barrel (8) is threadedly connected to the lower cover (9), the inner wall of the lower cover (9) close to the bottom is embedded with a lens F (14), the top of the lens F (14) is provided with a gasket 4 (13), and the top of the gasket 4 (13) is provided with a lens E (12); The outer edge of the lens A (2) is embedded in the inner wall of the lens barrel (8) near the top, and a lens B (4) is arranged at the bottom of the gasket 1 (3), and the outer edge of the lens B (4) is embedded in the inner wall of the lens barrel (8).

2. The adjustable focus welcome light according to claim 1, characterized in that: A lens C (5) is arranged at the bottom of the lens B (4), a gasket 2 (6) is arranged at the bottom of the lens C (5), and the outer edge of the gasket 2 (6) is embedded in the inner wall of the lens barrel (8).

3. The adjustable focus welcome light according to claim 2, characterized in that: A lens D (7) is arranged at the bottom of the gasket 2 (6), and the lens D (7) is embedded in the bottom of the inner wall of the lens barrel (8).

4. The adjustable focus welcome lamp according to claim 1, characterized in that: The outer edge of the gasket four (13) is embedded in the inner wall of the lower cover (9) near the bottom, and the top of the lens E (12) is provided with a gasket three (11), and the outer edge of the gasket three (11) and the outer edge of the lens E (12) are both embedded in the inner wall of the lower cover (9).

5. The adjustable focus welcome light according to claim 1, characterized in that: The inner wall of the lower cover (9) is provided with a cavity, and the inner wall of the cavity is embedded with a film (10).

6. The adjustable focus welcome light according to claim 1, characterized in that: The lens E (12) and the lens F (14) are condensing lenses. The lens F (14) has a concave-convex structure, and the lens E (12) has a double-convex lens.

7. The adjustable focus welcome lamp according to claim 1, characterized in that: The lens A (2), lens B (4), lens C (5), and lens D (7) are all imaging lenses, and the lens B (4) is made of plastic with a higher refractive index than the lenses A (2), lens C (5), and lens D (7).

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