CN117704308A - Lighting system and method for vehicle - Google Patents
Lighting system and method for vehicle Download PDFInfo
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- CN117704308A CN117704308A CN202211095448.7A CN202211095448A CN117704308A CN 117704308 A CN117704308 A CN 117704308A CN 202211095448 A CN202211095448 A CN 202211095448A CN 117704308 A CN117704308 A CN 117704308A
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 47
- 238000005286 illumination Methods 0.000 claims abstract description 25
- 239000004065 semiconductor Substances 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000005284 excitation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The invention discloses a lighting system and a method for a vehicle. The lighting system for a vehicle includes: laser device, zoom lens device, light conversion device, reflection of light device. The laser device is configured to: and emitting a laser beam to the light conversion device. The zoom lens device is configured to: and carrying out beam combination focusing on the laser beams emitted by the laser device. The light conversion device is configured to: and receiving the laser spot and emitting a fluorescent light beam according to the laser spot. The light reflecting device is configured to: and carrying out secondary light distribution on the fluorescent light beams emitted by the light conversion device. The invention has the beneficial effects that: the illumination of the vehicle with the integrated far/near light is realized.
Description
Technical Field
The present invention relates to automotive lighting, and in particular, to an automotive lighting system and a method of using the same.
Background
With the development of semiconductor technology, in recent years, lighting devices based on light emitting diodes and semiconductor lasers have been studied actively. The laser white light source produced by the technology of exciting fluorescent powder by a semiconductor laser has become a research hot spot at home and abroad by virtue of the application potential of the laser white light source in the field of high-brightness illumination, ultra-far irradiation distance and long service life.
The invention application CN111043563A discloses a laser lighting structure and a car lamp, which are disclosed as follows: the fluorescent sheet of the excitation element is remotely excited by laser to form illumination white light, different laser beams are irradiated to different excitation elements or different positions of the excitation element to emit white light, and the light emitted by the excitation element is shaped by the reflector and then reflected. Because the positions of the laser incident on the fluorescent plate are different, the positions of the emitting points of the excitation element are also different, and the different excitation white light beams form emergent light beams with different divergence angles after being shaped by the same reflector. By setting the position of the incident light spot of the laser beam, a part of the emergent light beam can form an illumination light beam with a narrow divergence angle, but the illumination distance is far, and a part of the light beam can also form an illumination light beam with a certain illumination width and a relatively close illumination distance.
Disclosure of Invention
The invention aims to provide a novel vehicle lighting system and a using method thereof, which are different from the laser lighting structure and the vehicle lamp disclosed in the Chinese invention application CN 111043563A.
In order to achieve the purpose, the technical scheme of the invention is as follows: a lighting system for a vehicle, comprising: a laser device, a zoom lens device, a light conversion device and a light reflection device; the laser device is configured to: emitting a laser beam to the light conversion device; the zoom lens device is between the laser device and the light conversion device, the zoom lens device being configured to: and a zoom lens device for focusing the laser beams emitted from the laser device, the zoom lens device comprising: the laser beam emitted by the laser device passes through the beam combining focusing lens and then reaches the light conversion device to form a laser spot, and the lens shifting mechanism is used for shifting the beam combining focusing lens so as to change the size of the laser spot; the light conversion device is configured to: receiving the laser spot and emitting a fluorescent light beam according to the laser spot; the light reflecting device is arranged between the zoom lens device and the light conversion device, the light reflecting device is provided with a light through hole, the light through hole is used for allowing a laser beam emitted by the laser device to pass through, and the light reflecting device is configured to: and carrying out secondary light distribution on the fluorescent light beams emitted by the light conversion device.
As a preferable mode of the illumination system for the vehicle, the laser device is a single semiconductor laser, or the laser device is an array semiconductor laser.
As a preferable scheme of the illumination system for the vehicle, an included angle is formed between the normal direction of the laser device and the normal direction of the light conversion device, and the included angle is 0-90 degrees; preferably, the included angle is 30 ° -60 °.
As a preferred aspect of the illumination system for a vehicle, the beam-combining focusing lens includes: a single lens, or, the combined beam focusing lens includes: and a lens group comprising more than two lenses.
As a preferred embodiment of the illumination system for a vehicle, a surface of one of the beam-combining focusing lenses is configured to: and returning the arriving fluorescent light beam to the light conversion device.
As a preferable mode of the illumination system for a vehicle, the surface of the lens is coated with a light-splitting film to realize that a light beam of a part of wavelengths can be transmitted and a light beam of a part of wavelengths can be reflected.
As a preferred aspect of the illumination system for a vehicle, the light conversion device includes: fluorescent ceramic plates.
As a preferred aspect of the lighting system for a vehicle, the light reflecting device includes: and the light conversion device is positioned at the focal point of the reflecting bowl.
As a preferable scheme of the lighting system for the vehicle, the inner surface of the reflecting bowl is plated with a reflecting aluminum film or a reflecting silver film.
The invention provides a vehicle lighting method, which comprises the following steps:
providing the vehicle lighting system; the method comprises the steps of,
the size of the laser light spot can be adjusted through the lens shifting mechanism of the zoom lens device, so that the fluorescent light beam is changed, the light emitting angle of the reflecting device is controlled, and far and near light illumination is realized.
Compared with the prior art, the invention has the beneficial effects that: the laser beam emitted by the laser device has the characteristics of good collimation and energy concentration, a high-brightness point light source is formed on the light conversion device, and secondary light distribution is carried out through the reflecting device, so that the central illuminance of a high beam field can be improved, and the requirement of the high beam field is met; through the zoom lens device, the light-emitting angle of the reflecting device can be controlled, the central illumination of a low-beam field is reduced, the illumination of an edge area is improved, and the illumination of a far/near light integrated vehicle is realized.
Drawings
Fig. 1 is a schematic structural view 1 (single lens) according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of an embodiment of the present invention 2 (dual lenses).
Fig. 3 is a schematic light-emitting diagram of an embodiment of the present invention.
FIG. 4 is a schematic diagram of an embodiment of the present invention using a light emitting device 1 (smaller light emitting angle).
FIG. 5 is a schematic view of an embodiment of the present invention using FIG. 2 (larger light exit angle).
Fig. 6 is a flow chart of a method of an embodiment of the present invention.
Detailed Description
The invention will be described in further detail below with reference to the drawings by means of specific embodiments. The description of these embodiments is provided to assist understanding of the present invention, but is not to be construed as limiting the present invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Referring to fig. 1 to 5, there is shown a lighting system for a vehicle, which may be used as a vehicle lamp.
The lighting system for a vehicle includes: a laser device 1, a zoom lens device 2, a light conversion device 3, and a light reflection device 4.
The laser device 1 is configured to: a laser beam is emitted to the light conversion device 3. Referring to fig. 3, an angle is formed between the normal direction of the laser device 1 and the normal direction of the light conversion device 3. The included angle is 0-90 degrees. Preferably, the included angle is 30 ° -60 °. The laser device 1 can be a single semiconductor laser or an array semiconductor laser. The laser beam emitted from the light conversion device 3 is preferably blue laser.
The zoom lens device 2 is disposed between the laser device 1 and the light conversion device 3. The zoom lens device 2 is configured to: the laser beam emitted from the laser device 1 is focused by beam combination. The zoom lens device 2 includes: a beam-combining focusing lens and a lens shifting mechanism. The beam combination focusing lens is composed of a single lens (see figure 1) or more than two lenses (see figure 2). The laser beam emitted from the laser device 1 passes through the beam combination focusing lens and then reaches the light conversion device 3 to form a laser spot. The lens shifting mechanism is used for shifting the beam combination focusing lens so as to change the size of the laser spot. The shift of the beam combination focusing lens can be the whole shift or the shift of one or a plurality of lenses. Preferably, the lens shift mechanism shifts the combined beam focusing lens in a normal direction of the laser device 1.
The light conversion device 3 is configured to: and receiving the laser spot and emitting a fluorescent light beam according to the laser spot. The light conversion device 3 includes: fluorescent ceramic plates. Preferably, the working surface of the fluorescent ceramic sheet is not limited to a smooth surface. The fluorescent light beam is preferably yellow light.
The light reflecting means 4 is between the zoom lens means 2 and the light converting means 3. The light reflecting device 4 is provided with a light transmitting hole. The light passing hole is used for allowing the laser beam emitted by the laser device 1 to pass through. The size of the light passage hole is determined by the light emission size of the laser device 1 and the focal length of the zoom lens device 2. The smaller the light emitting size of the laser and the longer the focal length of the beam combination focusing lens, the smaller the required aperture, and the less light escapes from the aperture. The light reflecting means 4 is configured to: and performing secondary light distribution on the fluorescent light beams emitted by the light conversion device 3. The light reflecting device 4 includes: a reflective bowl. The light conversion device 3 is positioned at the focal position of the reflector. Preferably, the inner surface of the reflecting bowl is plated with a reflecting aluminum film or a reflecting silver film, so that the light reflecting effect is improved.
Referring to fig. 4 and 5, the lens shift mechanism can adjust the size of the laser spot, so as to change the fluorescent beam, and follow the principle of conservation of light expansion, so as to control the light emitting angle of the light reflecting device 4 (the light emitting angle in fig. 4 is smaller than the light emitting angle in fig. 5), and realize far and near light illumination.
Preferably, a surface of one of the beam-combining focusing lenses is used as a reflecting surface of the fluorescent light beam. The surface of the lens is configured to: the arriving fluorescent light beam is returned to the light conversion device 3, so that the laser energy utilization rate is improved. The surface of the lens may be a cambered surface structure with the light emitting center of the light conversion device 3 as a center of a circle. Further, the surface of the lens is coated with a beam splitting film to realize transmission of part of the light beam, and the part of the light beam is reflected. In this embodiment, a light beam in the short wavelength range of 440-470nm is allowed to pass while a light beam in the wavelength range of 485-760nm is reflected.
In one embodiment, referring again to fig. 2, the beam combining focusing lens includes: a first lens 21 and a second lens 22. The first lens 21 has a first surface facing the laser and a second surface facing the second lens. The second lens 22 has a first surface facing the first lens and a second surface 222 facing the light conversion device. The second surface 222 of the second lens 22 is the fluorescent reflecting surface. The portion of the fluorescent light beam directed toward the beam combining focusing lens is reflected by the second surface 222 of the second lens and returns to the light conversion device.
In another embodiment, the beam combining focusing lens includes: a first lens and a second lens. The first lens has a first surface facing the laser and a second surface facing the second lens. The second lens has a first surface facing the first lens and a second surface facing the light conversion device. The first surface of the second lens is the fluorescent reflecting surface. The part of the fluorescent light beam, which faces the beam combination focusing lens, passes through the second surface of the second lens to reach the first surface of the second lens, is reflected by the first surface of the second lens, and returns to the light conversion device.
In yet another embodiment, the beam combining focusing lens includes: a first lens and a second lens. The first lens has a first surface facing the laser and a second surface facing the second lens. The second lens has a first surface facing the first lens and a second surface facing the light conversion device. The second surface of the first lens is the fluorescent reflecting surface. The part of the fluorescent light beam, which faces the beam combination focusing lens, passes through the second surface and the first surface of the second lens to reach the second surface of the first lens, is reflected by the second surface of the first lens, and returns to the light conversion device.
In yet another embodiment, the beam combining focusing lens includes: a first lens and a second lens. The first lens has a first surface facing the laser and a second surface facing the second lens. The second lens has a first surface facing the first lens and a second surface facing the light conversion device. The first surface of the first lens is the fluorescent reflecting surface. The part of the fluorescent light beam, which faces the beam combination focusing lens, passes through the second surface, the first surface and the second surface of the second lens, reaches the first surface of the first lens, is reflected by the first surface of the first lens, and returns to the light conversion device.
Referring to fig. 6, there is shown a lighting method for a vehicle, including:
providing the vehicle lighting system; the method comprises the steps of,
the size of the laser light spot can be adjusted through the lens shifting mechanism of the zoom lens device, so that the fluorescent light beam is changed, the light emitting angle of the reflecting device is controlled, and far and near light illumination is realized.
The laser beam emitted by the laser device has the characteristics of good collimation and energy concentration, a high-brightness point light source is formed on the light conversion device, and secondary light distribution is carried out through the reflecting device, so that the central illuminance of a high beam field can be improved, and the requirement of the high beam field is met; through the zoom lens device, the light-emitting angle of the reflecting device can be controlled, the central illumination of a low-beam field is reduced, the illumination of a marginal area is improved, and the illumination of a far/near light integrated vehicle is realized.
The foregoing has outlined rather broadly the more detailed description of the invention in order that the detailed description thereof herein may be better understood, and in order that the present invention may be better understood. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. A lighting system for a vehicle, comprising: a laser device, a zoom lens device, a light conversion device and a light reflection device; the laser device is configured to: emitting a laser beam to the light conversion device; the zoom lens device is between the laser device and the light conversion device, the zoom lens device being configured to: and a zoom lens device for focusing the laser beams emitted from the laser device, the zoom lens device comprising: the laser beam emitted by the laser device passes through the beam combining focusing lens and then reaches the light conversion device to form a laser spot, and the lens shifting mechanism is used for shifting the beam combining focusing lens so as to change the size of the laser spot; the light conversion device is configured to: receiving the laser spot and emitting a fluorescent light beam according to the laser spot; the light reflecting device is arranged between the zoom lens device and the light conversion device, the light reflecting device is provided with a light through hole, the light through hole is used for allowing a laser beam emitted by the laser device to pass through, and the light reflecting device is configured to: and carrying out secondary light distribution on the fluorescent light beams emitted by the light conversion device.
2. A lighting system for a vehicle as recited in claim 1, wherein said laser device is selected from the group consisting of a single semiconductor laser and an array semiconductor laser.
3. A lighting system for a vehicle as recited in claim 1, wherein a normal direction of said laser device forms an angle with a normal direction of said light conversion device, said angle being in the range of 0 ° -90 °; preferably, the included angle is 30 ° -60 °.
4. The illumination system for a vehicle according to claim 1, wherein the beam-combining focusing lens comprises: a single lens, or, the combined beam focusing lens includes: and a lens group comprising more than two lenses.
5. The vehicle lighting system of claim 1 or 4, wherein a surface of one of the beam combining and focusing lenses is configured to: and returning the arriving fluorescent light beam to the light conversion device.
6. A lighting system for a vehicle as recited in claim 5, wherein said surface of said lens is coated with a dichroic film to effect transmission of a portion of the wavelength light beam and reflection of a portion of the wavelength light beam.
7. A lighting system for a vehicle as recited in claim 1, wherein said light converting means comprises: fluorescent ceramic plates.
8. A lighting system for a vehicle as recited in claim 1, wherein said light reflecting means comprises: and the light conversion device is positioned at the focal point of the reflecting bowl.
9. The lighting system for a vehicle of claim 8, wherein the inner surface of the reflector is coated with a reflective aluminum film or a reflective silver film.
10. A method of lighting for a vehicle, comprising:
providing a lighting system for a vehicle according to any one of claims 1 to 9; the method comprises the steps of,
the size of the laser light spot can be adjusted through the lens shifting mechanism, and then the fluorescent light beam is changed, so that the light emitting angle of the reflecting device is controlled, and far and near light illumination is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211095448.7A CN117704308A (en) | 2022-09-08 | 2022-09-08 | Lighting system and method for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211095448.7A CN117704308A (en) | 2022-09-08 | 2022-09-08 | Lighting system and method for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117704308A true CN117704308A (en) | 2024-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211095448.7A Pending CN117704308A (en) | 2022-09-08 | 2022-09-08 | Lighting system and method for vehicle |
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| Country | Link |
|---|---|
| CN (1) | CN117704308A (en) |
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- 2022-09-08 CN CN202211095448.7A patent/CN117704308A/en active Pending
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