CN113217832A - High-power zooming laser lighting device - Google Patents
High-power zooming laser lighting device Download PDFInfo
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- CN113217832A CN113217832A CN202110375457.0A CN202110375457A CN113217832A CN 113217832 A CN113217832 A CN 113217832A CN 202110375457 A CN202110375457 A CN 202110375457A CN 113217832 A CN113217832 A CN 113217832A
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- lens
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- lighting device
- light
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/69—Details of refractors forming part of the light source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/30—Semiconductor lasers
Abstract
The invention relates to a high-power zooming laser lighting device which comprises a laser (3), a lens A (4), a transmission type fluorescent color wheel (8), a lens B (10), a lens C (11) and a lens D (15), wherein the lens A (4), the transmission type fluorescent color wheel, the lens B (10), the lens C (11) and the lens D (15) are arranged above the laser (3) in sequence; the lens A (4) is a plano-convex lens; the laser (3) emits laser light right opposite to the lens A (4), the focused light of the lens A (4) irradiates on a fluorescent material ring of the transmission type fluorescent color wheel (8) through a hole a, the lens B (10) focuses the light emitted on the fluorescent material ring, the lens C (11) is located at the focus of the lens B (10), and the lens D (15) is fixed on the telescopic rod (12) and used for zooming. The high-power zooming laser lighting device has the advantages of variable focus (the light-emitting angle is changed from 2 degrees to 20 degrees, and far and near lighting can be covered), high power (the power can reach more than 500 watts), easiness in assembly, simple structure and light weight, and effectively solves the problems in the prior art.
Description
Technical Field
The invention belongs to the technical field of lighting devices, and relates to a high-power zooming laser lighting device.
Background
All aircraft, including helicopters, have severe restrictions on the weight and power consumption of equipment, including lights, and there are clear regulations in aircraft development standards that require weight and power consumption to be below certain values. International research indicates that for every 1000 grams of lightening, the development cost is saved from $ 575 to $ 690, and the operating income is increased by $ 7360.
The traditional high-power xenon search lamp used by the existing helicopter search lamp is heavy in weight, large in volume and high in energy consumption.
The excitation mechanism of laser illumination and LED illumination is similar, and compared with LED illumination, the laser illumination has the advantages of higher photoelectric conversion efficiency, higher brightness, higher power density, smaller volume and light weight.
In the existing high-power laser lighting lamp, a blue laser diode converges blue laser to a small area on a fluorescent material through a plano-convex lens, the surface temperature of the area on the fluorescent material is extremely high, the existing fluorescent material cannot work at the high temperature, the fluorescent material is rapidly attenuated, the color temperature of light emitted by a light module is seriously influenced, and even the color of the emitted light is changed. Meanwhile, the traditional high-power xenon search lamp lacks a zooming function, cannot realize short-distance and long-distance illumination, and is inconvenient to use. In the existing LED lighting, there is a zoom design, and a schematic diagram of a light path through which a light source 36 passes is shown in fig. 3, and a combination zoom is performed by using 5 lenses (a bi-convex lens 31, a plano-concave lens 32, a plano-concave lens 33, a plano-convex lens 34, and a plano-convex lens 35), wherein a plano-concave lens must be used.
In view of the foregoing, there is a need for a high power, high efficiency, long life, variable focus, and lightweight lighting device.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a high-power zoom laser lighting device.
In order to achieve the purpose, the invention adopts the following scheme:
a high-power zooming laser lighting device comprises a laser, a lens A, a transmission type fluorescent color wheel, a lens B, a lens C and a lens D, wherein the lens A, the transmission type fluorescent color wheel, the lens B, the lens C and the lens D are arranged right above the laser in sequence; the lens A is a plano-convex lens;
the lens A is fixed on the bracket I, and forms a light shielding chamber X which shields light in other areas except the lens A with the bracket I, and the laser is positioned in the light shielding chamber X and emits laser right opposite to the lens A;
the transmission type fluorescent color wheel is fixed above a bracket II with a hole a at the upper part, and the focused light of the lens A irradiates on a fluorescent material ring of the transmission type fluorescent color wheel through the hole a (namely, the transmission type fluorescent color wheel is placed right above the hole a); (the diameter of the color wheel is far larger than that of the motor, and the motor does not influence light) the aperture of the hole a is larger than the maximum length of a light spot (the light spot is rectangular, which is determined by a high-power laser light source and is a rectangular array, which is well known by the person skilled in the art) formed by the lens A at the position of the hole a (the hole can be rectangular, square or oval);
the lens B and the lens C are fixed on a bracket III with a hole B at the upper part, the hole B is of an inverted truncated cone structure with a large upper part and a small lower part, and the diameter of the small end of the hole B is larger than 4 mm; lens B is fixed in hole B (glued) and lens C is located at the focus of lens B; the lens B focuses light emitted from the fluorescent material ring;
the lens D is fixed on the telescopic rod and used for zooming (the telescopic rod bears the lens D to move back and forth at the focal length above the lens C).
As a preferred technical scheme:
in the high-power zoom laser lighting device, the lens B, the lens C and the lens D are all plano-convex lenses.
In the high-power zoom laser lighting device, the lens C and the lens D are both fresnel lenses, and the weight of the lens C and the lens D is reduced by more than 80% compared with that of a glass lens (the cost can be reduced).
According to the high-power zooming laser lighting device, the lens D is fixed on the support IV (in a circular ring shape) on the telescopic rod through the mounting clamp spring.
In the high-power zoom laser lighting device, the aperture of the hole a is 1-5 mm larger than the maximum length of the light spot formed by the lens A at the position of the hole a (the light spot is rectangular).
According to the high-power zooming laser lighting device, the telescopic rod is an electric telescopic rod. The electric telescopic rod is a flat-bottom electric push rod. The electric telescopic rod is driven by a telescopic rod motor.
According to the high-power zooming laser lighting device, the laser is fixed on the upper surface of the radiator below the laser, and the radiator dissipates heat for the laser.
According to the high-power zoom laser lighting device, the bracket I is cylindrical, the upper edge of the bracket I extends inwards to form a supporting surface, and the lower edge of the bracket I is fixed on the upper surface of the radiator; the lens A is fixed on the bracket I, namely the edge of the lens A is arranged on the supporting surface of the bracket I and is fixed by the compression ring alpha.
According to the high-power zoom laser lighting device, the support II is a U-shaped frame, the bottom of the U-shaped frame is fixed on the upper surface of the radiator, and the hole a is formed in the top beam of the U-shaped frame.
According to the high-power zoom laser lighting device, the support III is an I-shaped support, the bottom of the I-shaped support is fixed on the top beam of the support II, and the hole b is located on the cross beam of the I-shaped support; the lens C is positioned at the focus of the lens B, namely the edge of the lens C is arranged on the upper surface of the beam of the I-shaped bracket and is fixed by the press ring beta.
The principle of the invention is as follows:
in the prior art, a reflective ceramic chip is generally adopted for laser illumination, the laser with the maximum electric power of about 100 watts can be excited, and the ceramic chip can be quenched or cracked when the power is exceeded. In the prior art, a light reflecting bowl is generally adopted for laser illumination as a light path system, and zooming illumination cannot be realized. The existing LED lighting has a zooming design, 5 lenses are used for zooming in a combined mode, a plano-concave mirror is also used, the lens combination is high in manufacturing cost, heavy in weight, high in assembly requirement and complex in process, and great challenges are generated on installation, debugging, production and weight control of the whole lamp.
The transmission type fluorescent color wheel in the structure of the invention is used as an illumination white light converter. Because the transmission type fluorescent color wheel rotates at high speed of more than 2000 revolutions per second and the irradiated part of the laser is rotated all the time, the transmission type fluorescent color wheel can bear the irradiation of the laser with higher power, and the electric power of the laser can reach 500TileCompared with the traditional reflection type ceramic chip laser lamp, the electric power is improved by multiple times, and high-power laser illumination is realized.
According to the invention, through light path simulation and optimization, a 3-piece plano-convex lens combination zooming scheme is preferably selected, wherein 2 pieces of plano-convex lenses are light Fresnel lenses, and the weight can be reduced by 500 g by 2 pieces of 100 mm-diameter plano-convex lenses. The light path design reduces the number of lenses, reduces the requirement on the strength of the support frame, has low requirement on the types of the lenses and is easy to assemble. The cost of the proposal is lower than 3-to-1 of the traditional 5-piece lens combination. The lens B collects the light excited by the transmission type fluorescent color wheel, the light emitting angle is still larger at the moment, the lens C is positioned on the focus of the lens B to further collect light, if the lens D is positioned on the focus of the lens C, the light spot of the emitted light is minimum at the moment, and the farther away from the focus, the larger the light spot of the emitted light is. The size of the light spot of the emitted light is changed by moving the lens D, and zooming is realized.
In addition, the movement structure in the invention adopts a telescopic rod design, and has a simpler structure than a guide rail type scheme. The guide rail type scheme needs 2 lead screws, and has the problems of complex processing, complex assembly, large mass and the like.
Advantageous effects
(1) The invention discloses a high-power zooming laser lighting device, which can zoom: the light emitting angle is changed from 2 degrees to 20 degrees, the far and near illumination can be covered, and the similar high-power search lamp does not have the zooming function;
(2) the high-power zooming laser lighting device has the advantages that the power is high: the power can reach more than 500 watts and is far beyond similar products;
(3) according to the high-power zooming laser lighting device, the telescopic rod design is adopted, the problems of complex guide rail type structure, more assembly and adjustment parts, complex processing and high assembly difficulty are solved, the telescopic rod structure is simpler, and the weight is lighter by one half;
(4) the high-power zoom laser lighting device provided by the invention avoids the problems of complex light path, more adjusting components, high precision requirement and difficulty in installation and debugging of the traditional 5-piece lens combination; the design of the invention reduces the number of lenses, has low requirements on the types of the lenses, is easy to assemble, has simple structure and light weight, only needs 3 plano-convex lenses, especially can use 2 Fresnel lenses, reduces the weight by 500 grams, and solves the problem of heavy aviation lamps.
Drawings
FIG. 1 is a schematic cross-sectional view of a high power zoom laser lighting device according to the present invention;
FIG. 2 is a schematic perspective view of a high power zoom laser lighting device according to the present invention;
FIG. 3 is a schematic view of the light path of the lighting device with the zoom design of the prior art;
FIG. 4 is a schematic diagram of the light path of a high power zoom laser lighting device according to the present invention;
FIG. 5 is a schematic view of the lens D of the high power zoom laser lighting device according to the present invention;
FIG. 6 is a schematic view of an installation of a fluorescent color wheel of a high power zoom laser lighting device according to the present invention;
the device comprises a heat radiator 1, a support 2, a support I, a laser 3, a lens 4, a lens A, a pressure ring 5, a support II, a support 7, a support III, a fluorescent color wheel 8, a press block 9, a press block beta, a lens B10, a lens C11, a telescopic rod 12, a support IV, a clamp spring 14, a lens D15, a biconvex lens 31, a planoconvex lens 32, a planoconvex lens 33, a planoconvex lens 34, a planoconvex lens 35 and a light source 36.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
A high-power zoom laser lighting device, as shown in fig. 1, 2, 5, and 6, includes a heat sink 1, a laser 3, a support I2, a support II6, a support III 7, and a lens A4, a transmissive fluorescent color wheel 8, a lens B10, a lens C11, and a lens D15, which are located right above the laser 3 and are sequentially disposed;
the laser 3 is fixed on the upper surface of the radiator 1 below the laser 3, and the radiator 1 radiates heat for the laser 3;
the bracket I2 is cylindrical, the upper edge of the bracket I extends inwards to form a supporting surface, and the lower edge of the bracket I is fixed on the upper surface of the radiator 1;
the lens A4 is a plano-convex lens; the lens A4 is positioned on the supporting surface of the bracket I2 and is fixed by a pressing ring alpha 5; the lens A4 and the bracket I2 form a light shielding chamber X which shields the other areas except the lens A4, and the laser 3 is positioned in the light shielding chamber X and emits laser light opposite to the lens A4;
the bracket II6 is a U-shaped bracket, the bottom of the U-shaped bracket is fixed on the upper surface of the radiator 1, and the hole a is arranged on the top beam of the U-shaped bracket;
the transmission type fluorescent color wheel 8 is fixed above the bracket II6, and the focused light of the lens A4 irradiates on a fluorescent material ring of the transmission type fluorescent color wheel 8 through a hole a; the aperture of the hole a is 1-5 mm larger than the maximum length of a light spot formed by the lens A4 at the position of the hole a;
the lens B10, the lens C11 and the lens D15 are all plano-convex lenses, wherein the lens C11 and the lens D15 are all Fresnel lenses;
the support III 7 is an I-shaped support, the bottom of the I-shaped support is fixed on the top beam of the support II6, and a cross beam of the I-shaped support is provided with a hole b; the hole b is in a round table-shaped structure with a large upper part and a small lower part, and the diameter of the lower bottom of the hole b is larger than 4 mm;
lens B10 and lens C11 are both fixed to mount III 7, lens B10 is fixed in hole B, and lens C11 is located at the focal point of lens B10; lens B10 focuses the light emitted from the phosphor ring;
the lens C11 is positioned at the focus of the lens B10, namely the lens C11 is positioned on the upper surface of the beam of the I-shaped bracket and is fixed by a pressing block beta 9;
the lens D15 is fixed on a bracket IV 13 (circular ring shape) on the telescopic rod 12 through a mounting clamp spring 14 and is used for zooming; the telescopic rod 12 is an electric telescopic rod.
The specific implementation process comprises the following steps: as shown in fig. 4, the lens B10 collects the light emitted from the transmissive color wheel, and the light emitting angle is still larger, the lens C11 is located at the focal point of the lens B10 to further collect the light, and the lens D15 is located at the focal point of the lens C11, and the light spot emitted from the light is smallest, and the farther away from the focal point, the larger the light spot emitted from the light is. Moving lens D15 effects a change in the spot size of the emitted light, which effects zooming.
Claims (10)
1. A high-power zooming laser lighting device is characterized in that: the device comprises a laser (3), a lens A (4), a transmission type fluorescent color wheel (8), a lens B (10), a lens C (11) and a lens D (15), wherein the lens A (4), the transmission type fluorescent color wheel, the lens B (10), the lens C (11) and the lens D (15) are arranged above the laser (3) in sequence; the lens A (4) is a plano-convex lens;
the lens A (4) is fixed on the support I (2) and forms a light shielding chamber X with the support I (2) for shielding light except for the lens A (4), and the laser (3) is positioned in the light shielding chamber X and emits laser light to the lens A (4);
the transmission type fluorescent color wheel (8) is fixed above the bracket II (6) with the upper opening a, and the focused light of the lens A (4) irradiates on a fluorescent material ring of the transmission type fluorescent color wheel (8) through the opening a; the aperture of the hole a is larger than the maximum length of a light spot formed by the lens A (4) at the position of the hole a;
the lens B (10) and the lens C (11) are both fixed on a bracket III (7) with a hole B at the upper part, the hole B is in an inverted truncated cone-shaped structure with a large upper part and a small lower part, and the diameter of the small end of the hole B is larger than 4 mm; a lens B (10) is fixed in the hole B, and a lens C (11) is positioned at the focal point of the lens B (10); a lens B (10) focuses light emitted from the fluorescent material ring;
the lens D (15) is fixed on the telescopic rod (12) and used for zooming.
2. The high-power variable-focus laser lighting device according to claim 1, wherein the lens B (10), the lens C (11) and the lens D (15) are all plano-convex lenses.
3. The high-power variable-focus laser lighting device according to claim 2, wherein the lens C (11) and the lens D (15) are both Fresnel lenses.
4. The high-power zoom laser lighting device according to claim 1, wherein the lens D (15) is fixed on a bracket IV (13) on the telescopic rod (12) through a mounting clamp spring (14).
5. The high power zoom laser illuminator of claim 1, wherein the aperture of the aperture a is 1-5 mm larger than the maximum length of the spot formed by the lens a (4) at the position of the aperture a.
6. The high power zoom laser lighting device according to claim 1, wherein the telescopic rod (12) is an electric telescopic rod.
7. A high power zoom laser lighting device according to claim 1, wherein the laser (3) is fixed on the upper surface of the heat sink (1) below the laser, and the heat sink (1) dissipates heat for the laser (3).
8. The high-power zoom laser lighting device according to claim 7, wherein the bracket I (2) is cylindrical, and the upper edge extends inwards to form a supporting surface, and the lower edge is fixed on the upper surface of the heat sink (1); the lens A (4) is fixed on the support I (2), namely the edge of the lens A (4) is placed on the supporting surface of the support I (2) and is fixed through the pressing ring alpha (5).
9. The high-power zoom laser lighting device according to claim 7, wherein the support II (6) is a U-shaped frame, the bottom of the U-shaped frame is fixed on the upper surface of the heat sink (1), and the hole a is formed in the top beam of the U-shaped frame.
10. The high-power zoom laser lighting device according to claim 9, wherein the support III (7) is an i-shaped support, the bottom of the i-shaped support is fixed on the top beam of the support II (6), and the hole b is located on the cross beam of the i-shaped support; the lens C (11) is positioned at the focus of the lens B (10), which means that the edge of the lens C (11) is arranged on the upper surface of the beam of the I-shaped bracket and is fixed by the pressing block beta.
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| CN202110375457.0A CN113217832B (en) | 2021-04-08 | 2021-04-08 | High-power zooming laser lighting device |
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| CN202110375457.0A CN113217832B (en) | 2021-04-08 | 2021-04-08 | High-power zooming laser lighting device |
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| CN113217832B CN113217832B (en) | 2022-10-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114659039A (en) * | 2022-02-11 | 2022-06-24 | 新沂市锡沂高新材料产业技术研究院有限公司 | Unmanned aerial vehicle laser lighting source |
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| CN113217832B (en) | 2022-10-21 |
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Application publication date: 20210806 Assignee: Crystal radium Technology (Zhejiang Changxing) Co.,Ltd. Assignor: SHANGHAI University OF ENGINEERING SCIENCE Contract record no.: X2023980036237 Denomination of invention: A high-power zoom laser illumination device Granted publication date: 20221021 License type: Common License Record date: 20230605 |
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