CN219160211U - Achromatic projection welcome lamp - Google Patents
Achromatic projection welcome lamp Download PDFInfo
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- CN219160211U CN219160211U CN202320292672.9U CN202320292672U CN219160211U CN 219160211 U CN219160211 U CN 219160211U CN 202320292672 U CN202320292672 U CN 202320292672U CN 219160211 U CN219160211 U CN 219160211U
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Abstract
The utility model provides an achromatic projection welcome lamp which comprises a light source, a light condensing module, a film and an imaging module which are sequentially and adjacently arranged along the light emitting direction; the imaging module comprises an inner imaging convex lens, an imaging concave lens and an outer imaging convex lens which are sequentially arranged along the light emergent direction, wherein the inner imaging convex lens is close to the film relative to the outer imaging convex lens, and the refractive index of the imaging concave lens is larger than that of the inner imaging convex lens and the outer imaging convex lens. The chromatic dispersion of the imaging concave lens and the chromatic dispersion of the inner imaging convex lens and the outer imaging convex lens can be mutually compensated, so that images and points of two main color lights can be overlapped together, and chromatic aberration of the two main color lights is eliminated.
Description
Technical Field
The utility model relates to the technical field of welcome lamps, in particular to an achromatic projection welcome lamp.
Background
Welcome lights (also known as floor lights) are used as auxiliary lighting for floor lighting or for route lighting in low ambient light. Such as a greeting lamp for an automobile, is usually installed at a door or a rear view mirror. When the door is opened, the illumination function is started to project an image on the ground, so that unique dazzling image light and a projection image are generated, and the function of illuminating the ground is also provided when the door is opened at night under low ambient light, so that people on or off the vehicle can notice the ground condition without mistakenly stepping on dirt, water pits or other dangerous terrains on the ground. In the prior art, a light spot projected by the welcome lamp has chromatic aberration.
Therefore, it is desirable to provide an achromatic projection welcome lamp to solve the above-mentioned problems.
Disclosure of Invention
The utility model provides an achromatic projection welcome lamp which can effectively eliminate chromatic aberration.
The technical scheme of the utility model is as follows:
an achromatic projection welcome lamp comprises a light source, a light-gathering module, a film and an imaging module which are sequentially and adjacently arranged along the light-emitting direction;
the imaging module comprises an inner imaging convex lens, an imaging concave lens and an outer imaging convex lens which are sequentially arranged along the light emergent direction, wherein the inner imaging convex lens is close to the film relative to the outer imaging convex lens, and the refractive index of the imaging concave lens is larger than that of the inner imaging convex lens and that of the outer imaging convex lens.
In the achromatic projection welcome lamp, the inner imaging convex lens and the outer imaging convex lens are low-refraction optical plastics, and the imaging concave lens is high-refraction optical plastics.
In the achromatic projection welcome lamp, the light-gathering module comprises a light-gathering concave-convex lens, wherein one surface of the light-gathering concave-convex lens, which is close to the light source, is a concave surface, and the other opposite surface of the light-gathering concave-convex lens is a convex surface.
In the achromatic projection welcome lamp, the achromatic projection welcome lamp further comprises a lamp holder, the light source is fixed on the lamp holder, the condensing concave-convex lens is covered outside the light source, the periphery of the condensing concave-convex lens extends towards the lamp holder to form an annular abutting end, the abutting end is abutted with the lamp holder, the abutting end is provided with a heat dissipation opening, and the heat dissipation opening is communicated with the inside and the outside of the abutting end.
In the achromatic projection welcome lamp, the achromatic projection welcome lamp further comprises a cylindrical shell, wherein the cylindrical shell is covered outside the condensing concave-convex lens, the film and the imaging module, one end of the shell is an inlet end, the inlet end is abutted with the lamp holder, and a limiting groove is formed in the inner side of the inlet end; the outside of butt end is provided with the stopper, the stopper joint is in the spacing groove.
In the achromatic projection welcome lamp, the outer side of the inlet end is provided with the identification lug for directional positioning, and the identification lug is opposite to the limiting groove.
In the achromatic projection welcome lamp, the light-gathering module further comprises a light-gathering convex lens, and the light-gathering convex lens is positioned between the light-gathering concave-convex lens and the film.
In the achromatic projection welcome lamp, the achromatic projection welcome lamp further comprises a cylindrical diaphragm, and the diaphragm is positioned between the film and the inner imaging convex lens.
In the achromatic projection welcome lamp, one end of the light-gathering convex lens, which is close to the inner imaging convex lens, is provided with four convex fixing blocks, the film is square, and four sides of the film are respectively abutted with the inner sides of the four fixing blocks.
In the achromatic projection welcome lamp, two opposite fixed blocks are provided with the positioning blocks, two opposite positioning grooves are formed in the shading ring, the two positioning blocks are positioned in the two positioning grooves, and the size of one positioning block is larger than that of the other positioning block.
Compared with the prior art, the utility model has the beneficial effects that: the achromatic projection welcome lamp has the advantages that the refractive index of the imaging concave lens is larger than that of the inner imaging convex lens and the outer imaging convex lens, the chromatic dispersion of the imaging concave lens and the chromatic dispersion of the inner imaging convex lens and the outer imaging convex lens can be mutually compensated, so that the images and the points of two main color lights can be overlapped together, and the chromatic aberration of the two main color lights is eliminated.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments are briefly described below, and the drawings in the following description are only drawings corresponding to some embodiments of the present utility model.
Fig. 1 is a schematic diagram of a splitting structure of a welcome lamp according to a preferred embodiment of the utility model.
Fig. 2 is a schematic cross-sectional structure of a welcome lamp according to a preferred embodiment of the utility model.
Fig. 3 is a schematic diagram of an internal structure of a welcome lamp according to a preferred embodiment of the utility model.
Fig. 4 is a schematic structural diagram of a condensing concave-convex lens of a welcome lamp according to a preferred embodiment of the present utility model.
Fig. 5 is a schematic diagram of an assembly structure of a converging convex lens and a film of a welcome lamp according to a preferred embodiment of the present utility model.
Fig. 6 is a schematic structural diagram of a shade aperture of a welcome lamp according to a preferred embodiment of the utility model.
Fig. 7 is a schematic structural diagram of a housing of a welcome lamp according to a preferred embodiment of the present utility model.
Wherein, the liquid crystal display device comprises a liquid crystal display device,
1. the light source is arranged in the light source,
2. the light-gathering module is used for gathering the light,
21. a condensing concave-convex lens 211, an abutting end 2111, a heat dissipation port 2112 and a limiting block,
22. a condensing convex lens 221, a fixed block 2211, a positioning block,
3. the film is used for the film,
4. the imaging module is configured to provide an image of the subject,
41. an inner imaging convex lens, 42, an imaging concave lens, 43, an outer imaging convex lens,
5. the light-holder is provided with a light-receiving opening,
6. the shell, 61, the inlet end, 611, the limit groove, 612, the identification lug,
7. aperture, 71, constant head tank.
In the drawings, like structural elements are denoted by like reference numerals.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The terms of directions used in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are used for explaining and understanding the present utility model only with reference to the orientation of the drawings, and are not intended to limit the present utility model.
The words "first," "second," and the like in the terminology of the present utility model are used for descriptive purposes only and are not to be construed as indicating or implying relative importance and not as limiting the order of precedence.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the prior art, a light spot projected by the welcome lamp has chromatic aberration. Chromatic aberration results from the difference in dispersion and refractive index of light of different wavelengths in the glass, resulting in different focal points for light of different wavelengths.
The following is a preferred embodiment of an achromatic projection welcome lamp that solves the above technical problems.
Referring to fig. 1, 2 and 3, a preferred embodiment of the present utility model provides an achromatic projection welcome lamp, which includes a light source 1, a light condensing module 2, a film 3 and an imaging module 4, which are sequentially and adjacently disposed along a light emitting direction. The light source 1 may be provided as an LED lamp bead. The light condensing module 2 is used for condensing light emitted by the LED lamp beads. The film 3 is printed with a pattern so as to form a projection pattern. The imaging module 4 may project the pattern on the film 3. The imaging module 4 includes an inner imaging convex lens 41, an imaging concave lens 42 and an outer imaging convex lens 43 sequentially arranged along the light emitting direction, the inner imaging convex lens 41 is close to the film 3 relative to the outer imaging convex lens 43, and the refractive index of the imaging concave lens 42 is larger than the refractive indexes of the inner imaging convex lens 41 and the outer imaging convex lens 43.
The achromatic projection welcome lamp has the refractive index of the imaging concave lens 42 larger than that of the inner imaging convex lens 41 and the outer imaging convex lens 43, and the chromatic dispersion of the imaging concave lens 42 and the chromatic dispersion of the inner imaging convex lens 41 and the chromatic dispersion of the outer imaging convex lens 43 can be mutually compensated, so that the images and points of two main color lights can be overlapped together, and the chromatic aberration of the two main color lights is eliminated.
The inner imaging convex lens 41 and the outer imaging convex lens 43 are low refractive optical plastics, and the imaging concave lens 42 is high refractive optical plastics. The structure can effectively reduce chromatic aberration.
Referring to fig. 2, the condensing module 2 includes a condensing concave-convex lens 21, wherein one surface of the condensing concave-convex lens 21, which is close to the light source 1, is a concave surface, and the other opposite surface is a convex surface. The structure can improve the uniformity of the projected light spots.
Referring to fig. 2 and 4, the achromatic projection welcome lamp further includes a lamp holder 5, the light source 1 is fixed to the lamp holder 5, the condensing lens 21 is covered outside the light source 1, and the periphery of the condensing lens 21 extends towards the lamp holder 5 to form an annular abutting end 211, and the abutting end 211 abuts against the lamp holder 5. The abutting end 211 is provided with a heat radiation port 2111, and the heat radiation port 2111 communicates with the inside and outside of the ring of the abutting end 211. By adopting the structure, the heat emitted by the LED lamp beads can be discharged to the outside, so that the service life of the LED lamp beads is prolonged.
Referring to fig. 2, 4 and 7, the achromatic projection welcome lamp further includes a cylindrical housing 6 covering the condensing meniscus 21, the film 3 and the imaging module 4. One end of the housing 6 is an inlet end 61, the inlet end 61 is abutted with the lamp holder 5, and a limit groove 611 is formed inside the inlet end 61. A limiting block 2112 is provided on the outer side of the abutting end 211, and the limiting block 2112 is clamped in the limiting groove 611. With the above structure, the housing 6 can be prevented from being rotationally displaced.
Referring to fig. 7, an identification bump 612 for directional positioning is disposed on the outer side of the inlet end 61, and is opposite to the position of the limit groove 611. When the housing 6 is sleeved outside the condensing meniscus 21, the film 3 and the imaging module 4, the above structure can identify the position of the limit groove 611 so that the limit block 2112 is accurately fitted into the limit groove 611.
Referring to fig. 2, the condensing module 2 further includes a condensing convex lens 22, which is located between the condensing concave-convex lens 21 and the film 3. The structure can effectively improve the collimation effect of emergent light.
With continued reference to fig. 2, the achromatic projection welcome lamp further includes a cylindrical light shielding ring 7 positioned between the film 3 and the inner imaging convex lens 41. The structure can effectively eliminate stray light.
Referring to fig. 5, the condensing convex lens 22 is provided with four protruding fixing blocks 221 at one end near the inner imaging convex lens 41, the film 3 is square, and four sides of the film 3 are respectively abutted against the inner sides of the four fixing blocks 221. This structure facilitates fixing of the film 3.
Referring to fig. 5 and 6, two opposite fixing blocks 221 are provided with positioning blocks 2211, two opposite positioning grooves 71 are formed on the aperture 7, the two positioning blocks 2211 are located in the two positioning grooves 71, and the size of one positioning block 2211 is larger than that of the other positioning block 2211. This structure facilitates assembling the condensing convex lens 22 and the light shielding ring 7 together, and is not easy to be misplaced.
The working principle of the achromatic projection welcome lamp of the preferred embodiment of the utility model is as follows:
the light emitted by the light source 1 is converged by the condensing concave-convex lens 21 and the condensing convex lens 22, then projected onto the film 3, stray light is eliminated by the aperture 7, and finally the pattern on the film 3 is projected and imaged by the inner imaging convex lens 41, the imaging concave lens 42 and the outer imaging convex lens 43. And chromatic aberration is eliminated by the imaging concave lens 42 having a refractive index larger than that of the inner imaging convex lens 41 and the outer imaging convex lens 43.
This completes the working principle of the achromatic projection welcome lamp of the preferred embodiment.
The achromatic projection welcome lamp has the advantages that the refractive index of the imaging concave lens is larger than that of the inner imaging convex lens and the outer imaging convex lens, the chromatic dispersion of the imaging concave lens and the chromatic dispersion of the inner imaging convex lens and the outer imaging convex lens can be mutually compensated, so that the images and the points of two main color lights can be overlapped together, and the chromatic aberration of the two main color lights is eliminated.
In summary, although the present utility model has been described with reference to the preferred embodiments, the scope of the utility model is not limited thereto, and any person skilled in the art who is skilled in the art should make equivalent substitutions or modifications according to the technical scheme of the present utility model within the scope of the present utility model.
Claims (10)
1. The achromatic projection welcome lamp is characterized by comprising a light source, a light-gathering module, a film and an imaging module which are sequentially and adjacently arranged along the light-emitting direction;
the imaging module comprises an inner imaging convex lens, an imaging concave lens and an outer imaging convex lens which are sequentially arranged along the light emergent direction, wherein the inner imaging convex lens is close to the film relative to the outer imaging convex lens, and the refractive index of the imaging concave lens is larger than that of the inner imaging convex lens and that of the outer imaging convex lens.
2. The achromatic projection welcome lamp of claim 1, wherein the inner and outer imaging convex lenses are low refractive optical plastics and the imaging concave lens is high refractive optical plastics.
3. The achromatic projection welcome lamp of claim 1, wherein the condensing module comprises a condensing meniscus, one face of the condensing meniscus adjacent the light source being concave, the other opposing face being convex.
4. The achromatic projection welcome lamp according to claim 3, further comprising a lamp holder, wherein the light source is fixed to the lamp holder, the condensing lens is covered outside the light source, the periphery of the condensing lens extends towards the lamp holder to form an annular abutting end, the abutting end abuts against the lamp holder, a heat dissipation port is arranged at the abutting end, and the heat dissipation port is communicated with the inside and the outside of the abutting end.
5. The achromatic projection welcome lamp according to claim 4, further comprising a cylindrical housing covering the condensing meniscus, the film and the imaging module, wherein one end of the housing is an inlet end, the inlet end is abutted with the lamp holder, and a limiting groove is formed in the inner side of the inlet end; the outside of butt end is provided with the stopper, the stopper joint is in the spacing groove.
6. The achromatic projection welcome lamp according to claim 5, wherein an identification bump for directional positioning is provided on an outer side of the entrance end, which is opposite to the limit groove.
7. The achromatic projection welcome lamp of claim 3, wherein the condenser module further comprises a condenser convex lens positioned between the condenser meniscus lens and the film.
8. The achromatic projection welcome lamp of claim 7, further comprising a cylindrical aperture stop positioned between the film and the inner imaging convex lens.
9. The achromatic projection welcome lamp according to claim 8, wherein one end of the condenser convex lens, which is close to the inner imaging convex lens, is provided with four convex fixing blocks, the film is square, and four sides of the film are respectively abutted with the inner sides of the four fixing blocks.
10. The achromatic projection welcome lamp of claim 9, wherein two opposite fixing blocks are provided with positioning blocks, two opposite positioning grooves are formed in the shading ring, two positioning blocks are positioned in the two positioning grooves, and the size of one positioning block is larger than that of the other positioning block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320292672.9U CN219160211U (en) | 2023-02-15 | 2023-02-15 | Achromatic projection welcome lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320292672.9U CN219160211U (en) | 2023-02-15 | 2023-02-15 | Achromatic projection welcome lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219160211U true CN219160211U (en) | 2023-06-09 |
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ID=86616229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320292672.9U Active CN219160211U (en) | 2023-02-15 | 2023-02-15 | Achromatic projection welcome lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219160211U (en) |
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2023
- 2023-02-15 CN CN202320292672.9U patent/CN219160211U/en active Active
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