CN111140813A - A laser lighting module - Google Patents
A laser lighting module Download PDFInfo
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- CN111140813A CN111140813A CN202010068059.XA CN202010068059A CN111140813A CN 111140813 A CN111140813 A CN 111140813A CN 202010068059 A CN202010068059 A CN 202010068059A CN 111140813 A CN111140813 A CN 111140813A
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- wavelength conversion
- laser source
- focusing lens
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/16—Laser light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
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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
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
- F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
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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
- F21Y2115/10—Light-emitting diodes [LED]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Semiconductor Lasers (AREA)
Abstract
本发明公开了一种激光照明模组，包括激光源单元、波长转换单元、反射单元、以及用于安装激光源单元、波长转换单元和反射单元的基座，激光源单元位于反射单元的一侧，反射单元为顶部具有开孔的半球形反光碗，半球形反光碗由玻璃制成，内表面镀设反射膜且其中一侧设有贯穿半球形反光碗顶部和底部的缺口，波长转换单元位于半球形反光碗的球心处，基座包括底座和顶盖，激光源单元、波长转换单元和反射单元位于底座和顶盖之间，且顶盖上设有通光口，通光口与反射单元顶部的开孔对应。将激光源单元设于反射单元的一侧，两者紧密布置，降低了照明模组的封装体积，激光源单元、波长转换单元和反射单元封装底座和顶盖之间，整个模组的体积相当小。
The invention discloses a laser lighting module, comprising a laser source unit, a wavelength conversion unit, a reflection unit, and a base for installing the laser source unit, the wavelength conversion unit and the reflection unit, and the laser source unit is located on one side of the reflection unit , the reflective unit is a hemispherical reflective bowl with an opening on the top, the hemispherical reflective bowl is made of glass, the inner surface is coated with a reflective film and one side is provided with a notch that runs through the top and bottom of the hemispherical reflective bowl, and the wavelength conversion unit is located at At the center of the hemispherical reflective bowl, the base includes a base and a top cover, the laser source unit, the wavelength conversion unit and the reflection unit are located between the base and the top cover, and the top cover is provided with a light opening, which is connected to the reflection The opening at the top of the unit corresponds. The laser source unit is arranged on one side of the reflection unit, and the two are closely arranged, which reduces the packaging volume of the lighting module. Small.
Description
Technical Field
The invention relates to the technical field of illumination, in particular to a laser illumination module.
Background
With the development of semiconductor technology, LED (Light Emitting Diode) Light sources have the advantages of high efficiency, energy saving, environmental protection, low cost, long service life, etc., and are gradually replacing traditional incandescent lamps and energy saving lamps, becoming a general illumination Light source.
In the existing LED automobile headlamp, an LED light source is positioned at the center of a reflector of an automobile lamp, and light beams emitted by the LED light source are collected by the reflector of the automobile lamp and distributed by a rear-end optical system (comprising a baffle, a lens and the like) to finally project required far and near light field distribution. The automobile headlamp can obtain the light distribution of the automobile headlamp low beam meeting the requirement, however, when the high beam distribution is formed, the problem that the central illumination is obviously insufficient usually exists due to the limitation of the brightness of the current LED light source, and the LED light source is difficult to meet the requirement in the application fields needing the ultra-high brightness light source such as stage lighting, automobile headlamps, projection display, searchlighting and the like.
In view of the above problems, the prior art provides a laser lighting lamp, in which a laser source is disposed outside a reflector of a vehicle lamp to emit a laser beam, the laser beam is projected onto a fluorescent material inside the reflector of the vehicle lamp, and fluorescence is excited and emitted in a predetermined direction after being reflected by the reflector of the vehicle lamp, so as to form a light beam traveling in a predetermined solid angle. However, because an opening for emitting the illumination light beam is reserved at the edge of the light reflecting bowl in the existing structure, part of the fluorescence emitted by the fluorescent material laser can be directly emitted from the edge of the light reflecting bowl along a non-specified direction, so that the utilization rate and the use safety of a light source are reduced; in addition, the conventional laser illuminating lamp is usually large in size and high in installation difficulty, and particularly when the laser illuminating lamp is used in the field of portable searchlighting, the labor intensity of a user is improved, and the use convenience is greatly reduced.
Disclosure of Invention
The invention provides a laser lighting module and a small-size laser lighting module, and aims to solve the problems of low utilization rate of a light source, poor use safety, large size of a lighting lamp, high installation difficulty and low use convenience in the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a laser lighting module comprises a laser source unit, a wavelength conversion unit, a reflection unit, and a base for mounting the laser source unit, the wavelength conversion unit and the reflection unit, the laser source unit is positioned at one side of the reflection unit, the reflection unit is a hemispherical light reflecting bowl with an opening at the top, the hemispherical reflector is made of glass, the inner surface of the hemispherical reflector is plated with a reflecting film, one side of the hemispherical reflector is provided with a notch which penetrates through the top and the bottom of the hemispherical reflector, the wavelength conversion unit is positioned at the center of the hemisphere reflecting bowl, the laser beam emitted by the laser source unit passes through the notch and then is projected onto the wavelength conversion unit and excites fluorescence, one part of the fluorescence is directly emitted from the opening of the hemisphere reflecting bowl, and the other part of the fluorescence is emitted from the opening after being reflected by the hemisphere reflecting bowl; the base includes base and top cap, laser source unit, wavelength conversion unit and reflection unit are located between base and the top cap, just be equipped with on the top cap and lead to the light mouth, lead to the light mouth with the trompil at reflection unit top corresponds.
Further, the laser source unit, the wavelength conversion unit and the reflection unit are installed on the base, and the cap is covered above the laser source unit, the wavelength conversion unit and the reflection unit.
Further, the laser source unit includes laser source, focusing lens and the speculum that arranges in proper order along the light path, focusing lens with the reflection unit sets up side by side, focusing lens's cross section is the rectangle, wherein the long limit with the adjacent limit of reflection unit is parallel.
Further, laser source, focusing lens and speculum install in proper order in on the base, be equipped with a recess on the base, be equipped with in the recess one with the light source mounting of recess adaptation, the bottom of light source mounting be equipped with the spacing hole of laser source adaptation, and the top be equipped with the logical light portion of spacing hole intercommunication, the laser source is located in the spacing hole, the laser beam that the laser source sent is followed it throws on focusing lens to lead to after the emergence in the light portion.
Further, still including being located the focus lens mounting of laser source top, be equipped with a logical groove that runs through top and bottom in the focus lens mounting, it is the draw-in groove with focus lens looks adaptation to lead to groove one side near the bottom, focus lens is fixed in the draw-in groove.
Furthermore, the focusing lens fixing device further comprises a reflector fixing piece, wherein the reflector fixing piece is positioned at the top of the focusing lens fixing piece, and the reflector corresponds to the through groove.
Further, focus lens mounting with be equipped with first elastic gasket between the laser source, be equipped with in the first elastic gasket with the logical unthreaded hole that the laser beam corresponds, focus lens mounting with first elastic gasket threaded connection.
Furthermore, a second elastic gasket is arranged between the reflector fixing piece and the focusing lens fixing piece, a light through hole corresponding to the through groove is formed in the second elastic gasket, and the reflector fixing piece is connected with the second elastic gasket through a screw.
Further, the wavelength conversion unit is a fluorescent powder sheet, a fluorescent powder sheet fixing part is arranged on the base, a mounting groove corresponding to the fluorescent powder sheet is formed in the fluorescent powder sheet fixing part, and the fluorescent powder sheet is limited in the mounting groove.
Furthermore, the wavelength conversion unit comprises a fluorescent powder sheet and an LED chip positioned below the fluorescent powder sheet, the fluorescent powder sheet and the LED chip are packaged into a whole, and a fixing piece for fixing the wavelength conversion unit is arranged on the base.
The invention provides a laser lighting module, which comprises a laser source unit, a wavelength conversion unit, a reflection unit and a base used for installing the laser source unit, the wavelength conversion unit and the reflection unit, the laser source unit is positioned at one side of the reflection unit, the reflection unit is a hemispherical light reflecting bowl with an opening at the top, the hemispherical reflector is made of glass, the inner surface of the hemispherical reflector is plated with a reflecting film, one side of the hemispherical reflector is provided with a notch which penetrates through the top and the bottom of the hemispherical reflector, the wavelength conversion unit is positioned at the center of the hemisphere reflecting bowl, the laser beam emitted by the laser source unit passes through the notch and then is projected onto the wavelength conversion unit and excites fluorescence, one part of the fluorescence is directly emitted from the opening of the hemisphere reflecting bowl, and the other part of the fluorescence is emitted from the opening after being reflected by the hemisphere reflecting bowl; the base includes base and top cap, laser source unit, wavelength conversion unit and reflection unit are located between base and the top cap, just be equipped with on the top cap and lead to the light mouth, lead to the light mouth with the trompil at reflection unit top corresponds. Locate the one side of reflection unit with laser source unit, both closely arrange, have reduced lighting module's encapsulation volume, between laser source unit, wavelength conversion unit and reflection unit encapsulation base and the top cap, the volume of whole module is fairly little. Through setting up the hemisphere reflector that has the trompil as the reflection element to locate its centre of sphere department with wavelength conversion unit, when the laser beam of laser source unit outgoing throws to the excitation on the wavelength conversion unit and goes out fluorescence, make partly fluorescence directly go out from the trompil department of hemisphere reflector, another part fluorescence is through after the reflection of hemisphere reflector is followed the trompil department and is gone out, not only can avoid fluorescence to follow the edge of reflection element along non-appointed direction outgoing, strengthened central luminance moreover, improved the utilization ratio of security and light source. The small-size laser lighting module provided by the invention is simple in structure, small in size, convenient to install and high in using convenience.
Drawings
Fig. 1 is a schematic view of an overall structure of a laser lighting module according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a laser lighting module without a top cover according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the structure of the laser source unit, the wavelength conversion unit and the reflection unit according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a base in an embodiment of the present invention;
FIGS. 5a-5b are top and bottom perspective views, respectively, of a light source fixture in accordance with an embodiment of the present invention;
FIG. 6 is a schematic view of the installation of a first resilient pad in accordance with one embodiment of the present invention;
FIG. 7 is a perspective view of a focusing lens holder in accordance with one embodiment of the present invention;
FIG. 8 is a schematic view of a phosphor patch mounting assembly according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a wavelength conversion unit according to an embodiment of the invention.
Shown in the figure: 10. a laser light source unit; 110. a laser source; 120. a focusing lens; 130. a mirror; 20. a wavelength conversion unit; 210. a phosphor sheet; 220. an LED chip; 30. a reflection unit; 310. opening a hole; 320. a notch; 40. a base; 410. a base; 411. a groove; 420. a top cover; 421. a light-through port; 50. a light source fixture; 510. a limiting hole; 520. a light-passing part; 60. a focusing lens holder; 610. a through groove; 611. a card slot; 70. a reflector fixing member; 80. a first resilient pad; 810. a light through hole; 90. a phosphor patch fixing member; 910. and (4) mounting the groove.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
as shown in fig. 1 to 3, the present invention provides a laser lighting module, which includes a laser source unit 10, a wavelength conversion unit 20, a reflection unit 30, and a base 40 for mounting the laser source unit 10, the wavelength conversion unit 20, and the reflection unit 30, wherein the laser source unit 10 is located at one side of the reflection unit 30, the reflection unit 30 is a hemispherical light-reflecting bowl with an opening 310 at the top, the hemispherical light-reflecting bowl is made of glass, a reflection film is plated on the inner surface of the hemispherical light-reflecting bowl, a notch 320 is formed on one side of the hemispherical light-reflecting bowl and penetrates through the top and the bottom of the hemispherical light-reflecting bowl, the wavelength conversion unit 20 is located at the center of the hemispherical light-reflecting bowl, a laser beam emitted from the laser source unit 10 passes through the notch 320 and then is projected onto the wavelength conversion unit 20 to excite fluorescence, and a part of the fluorescence is directly emitted from the opening, the other part of the fluorescence is reflected by the hemispherical light reflecting bowl and then exits from the opening 310; the base 40 includes a base 410 and a top cover 420, the laser source unit 10, the wavelength conversion unit 20 and the reflection unit 30 are located between the base 410 and the top cover 420, and the top cover 420 is provided with a light through port 421, the light through port 421 corresponds to the opening 310 at the top of the reflection unit 30. Specifically, the laser source unit 10 is disposed at one side of the reflection unit 30, the laser source unit 10, the wavelength conversion unit 20, and the reflection unit 30 are closely disposed, so that the packaging volume of the lighting module is reduced, the laser source unit 10, the wavelength conversion unit 20, and the reflection unit 30 are mounted on the base 410, and are packaged and protected by the top cover 420, the whole module has a relatively small volume, the length, the width, and the height are respectively 3cm, 2.4cm, and 2.7cm, and is convenient to mount and high in convenience to use, by providing the hemispherical light reflecting bowl with the opening 310 as the reflection unit 30, and disposing the wavelength conversion unit 20 at the center of the sphere, when a laser beam emitted from the laser source unit 10 is projected onto the wavelength conversion unit 20 to excite fluorescence, a part of the fluorescence is directly emitted from the opening 310 of the hemispherical light reflecting bowl, and the other part of the fluorescence is emitted from the opening 310 after being reflected by the hemispherical light reflecting bowl, and the central brightness is enhanced, and the safety and the utilization rate of the light source are improved. The hemispherical reflector is made of glass, the smoothness of the optical surface of the hemispherical reflector made of plastic or other materials cannot meet the required requirements, so that the reflected light cannot return to the wavelength conversion unit 20, the optical surface of the hemispherical reflector made of glass is smooth and can meet the requirements, and the glass can be quartz, sapphire or other components. In this embodiment, the laser source unit 10 and the wavelength conversion unit 20 are respectively disposed at the inner side and the outer side of the reflection unit 30, however, since the hemispherical light-reflecting bowl made of glass is inconvenient to be punched, the notch 320 is formed by cutting, so that the laser beam can be conveniently projected onto the wavelength conversion unit 20 through the notch 320. It should be noted that, because the reflection unit 30 is a hemispherical light-reflecting bowl, a part of the fluorescence excited by the wavelength conversion unit 20 directly exits from the opening 310, another part of the fluorescence is reflected by the reflection unit 30 and still projected onto the wavelength conversion unit 20 for re-excitation, and a part of the re-excited light directly exits from the opening 310, and another part of the fluorescence is reflected by the reflection unit 30 for multiple times and excited by the wavelength conversion unit 20 for multiple times, and finally all the light rays exit from the opening 310.
Preferably, the laser source unit 10, the wavelength conversion unit 20, and the reflection unit 30 are mounted on the base 410, and the top cover 420 covers the laser source unit 10, the wavelength conversion unit 20, and the reflection unit 30. Specifically, the wavelength conversion unit 20 and the reflection unit 30 are sequentially mounted on the base 410 from bottom to top, and the laser source unit 10 is mounted on one side of the wavelength conversion unit 20 and the reflection unit 30, and in order to further reduce the volume of the illumination module, in this embodiment, the central axis of the laser source unit 10 is parallel to the central axis of the reflection unit 30, after the laser source unit 10, the wavelength conversion unit 20, and the reflection unit 30 are mounted, a top cover is disposed above the laser source unit 10, the wavelength conversion unit 20, and the reflection unit 30, and during mounting, the light through port 421 on the top cover 420 corresponds to the opening 310 on the top of the reflection unit 30, and it should be noted that, in order to enable light to exit smoothly, the size of the light through port 421 on the top cover 420 is slightly larger than the opening 310 on the top of the reflection unit 30.
Referring to fig. 3, the laser source unit 10 includes a laser source 110, a focusing lens 120 and a reflector 130 sequentially arranged along an optical path, a laser beam emitted by the laser source 110 sequentially passes through the focusing lens 120 and the reflector 130, then passes through the notch 320 and is projected onto the wavelength conversion unit 20, the focusing lens 120 and the reflector unit 30 are arranged side by side, a cross section of the focusing lens 120 is rectangular, and a long side of the cross section is parallel to an adjacent side of the reflector unit 30. Specifically, the laser source 110 usually adopts a semiconductor laser, i.e., a laser diode, and the emitted light spot is an elliptical light spot, the elliptical light spot is projected onto the focusing lens 120 after passing through the collimating lens, and the long axis of the elliptical light spot corresponds to the long edge of the upper surface of the focusing lens 120, so that the laser light spot is prevented from leaking out of the edge of the focusing lens 120. In addition, focusing lens 120 and reflection unit 30 place side by side, set focusing lens 120 to the cross-section for rectangular structure, and the long limit with reflection unit 30's neighbouring limit is parallel to reduce focusing lens 120's the volume that occupies, make whole lighting module smaller and more exquisite, improved the convenient degree of use greatly.
Preferably, the laser source 110, the focusing lens 120 and the reflecting mirror 130 are sequentially mounted on the base 410, as shown in fig. 4, a groove 411 is formed in the base 410, a light source fixing member 50 adapted to the groove 411 is disposed in the groove 411, as shown in fig. 5a to 5b, a limiting hole 510 adapted to the laser source 110 is disposed at the bottom of the light source fixing member 50, a light-passing portion 520 communicated with the limiting hole 510 is disposed at the top of the light source fixing member 50, the laser source 110 is located in the limiting hole 510, and a laser beam emitted by the laser source 110 is emitted from the light-passing portion 520 and then is projected onto the focusing lens 120. Specifically, the shape of the light source fixing member 50 is adapted to the shape of the groove 411, and the laser source 110 is limited in the groove 411 by the light source fixing member 50, in this embodiment, the light passing portion 520 has a rectangular shape corresponding to the laser beam, and may have other shapes as long as the laser beam is not shielded.
As shown in fig. 7, the lighting module further includes a focusing lens holder 60 located above the laser source 110, a through slot 610 penetrating through the top and the bottom is disposed in the focusing lens holder 60, a slot 611 adapted to the focusing lens 120 is disposed on a side of the through slot 610 close to the bottom, and the focusing lens 120 is fixed in the slot 611. Specifically, the length of the slot 611 is greater than the length of the through slot 610, the focusing lens 120 is clamped in the slot 611, and the laser beam emitted by the laser source 110 is focused by the focusing lens 120, passes out of the through slot 610, and is projected onto the reflector 130.
Referring to fig. 1, the lighting module further includes a reflector fixing member 70, the reflector fixing member 70 is located on the top of the focusing lens fixing member 60, and the position of the reflector 130 corresponds to the position of the through slot 610. Specifically, in this embodiment, the mirror holder 70 has a plate-like structure, the mirror 130 is bonded to the mirror holder 70, the top of the focusing lens holder 60 has an inclined structure, and the mirror holder 70 is disposed on the inclined structure.
Referring to fig. 6, a first elastic pad 80 is disposed between the focusing lens fixing member 60 and the laser source 110, a light passing hole 810 corresponding to the laser beam is disposed in the first elastic pad 80, and the focusing lens fixing member 60 is in threaded connection with the first elastic pad 80. Specifically, in the present embodiment, the focusing lens fixing member 60 is connected to the first elastic pad 80 by at least two screws (of course, the number of the screws may be more than two), and the heights and the inclinations of the focusing lens 120 and the reflecting mirror 130 are adjusted by controlling the tightness of the screws, so that the laser spot is focused on the central position of the wavelength conversion unit 20.
Preferably, a second elastic gasket (not shown in the figure) is disposed between the reflector fixing member 70 and the focusing lens fixing member 60, a light passing hole corresponding to the through groove 610 is disposed in the second elastic gasket, and the reflector fixing member 70 is in threaded connection with the second elastic gasket. In this embodiment, the reflector fixing member 70 is connected to the second elastic pad by two screws (of course, the number of the screws may be two or more), and the height and the inclination degree of the reflector 130 are adjusted by controlling the tightness of the screws, so that the laser spot is focused on the center of the wavelength conversion unit 20.
As shown in fig. 1 and 8, the wavelength conversion unit 20 is a phosphor sheet 210, a phosphor sheet fixing member 90 is disposed on the base 410, an installation groove 910 corresponding to the phosphor sheet 210 is disposed in the phosphor sheet fixing member 90, and the phosphor sheet 210 is limited in the installation groove 910. Specifically, the position of the mounting groove 910 corresponds to the center of the hemispherical reflector, and the phosphor plate 210 is fixed at the center of the hemispherical reflector by the phosphor plate fixing member 90 without moving relative to each other.
As shown in fig. 9, the wavelength conversion unit 20 includes a phosphor sheet 210 and an LED chip 220 located below the phosphor sheet, the phosphor sheet 210 and the LED chip 220 are packaged together, and a fixing member (not shown) for fixing the wavelength conversion unit 20 is disposed on the base 410. Specifically, the LED chip 220 is disposed below the phosphor sheet 210, and the LED chip 220 and the laser double-sided excitation phosphor sheet 210 can greatly improve the central brightness of the illumination light spot, and can selectively turn on or off the laser source 110 to form a far-distance illumination light field and a near-distance illumination light field according to the requirement.
Preferably, the central angle of the notch 320 corresponding to the circumferential direction is 10 to 30 °. The notch 320 cannot be too large so as to avoid waste caused by emitting a lot of fluorescence excited by the wavelength conversion unit 20 directly from the notch, in this embodiment, the central angle of the notch 320 in the circumferential direction is not greater than 30 °, the integral 30/360 is 1/12, and is not greater than 10%, and the waste light is within an acceptable range. Of course, a filter may be disposed in the notch 320, and the filter transmits laser light to reflect white light, so as to further reduce light waste.
Preferably, the reflective film has a reflectance of more than 90%. Therefore, the total reflectivity of the hemispherical light reflecting bowl can reach 90% (1-1/12) > 80%, and the utilization rate of laser is high. Preferably, the reflective film includes a metal film and an oxide protective layer, the metal film may be silver or other high reflective metal, and since the metal film is easily oxidized, the oxide protective layer is disposed outside the metal film, and the oxide may be silicon oxide or other oxide capable of protecting the metal film. Preferably, the reflective film may also be a dielectric film, and the dielectric film is not easily oxidized, so that a protective film is not required to be disposed on the outer layer, however, the reflectivity of the dielectric film is lower than that of the metal film, and therefore, in this embodiment, the metal film is better than the dielectric film.
The invention provides a laser lighting module, which comprises a laser source unit 10, a wavelength conversion unit 20, a reflection unit 30 and a base 40 for installing the laser source unit 10, the wavelength conversion unit 20 and the reflection unit 30, the laser source unit 10 is located at one side of the reflection unit 30, the reflection unit 30 is a hemispherical light-reflecting bowl having an opening 310 at the top, the hemispherical reflector is made of glass, the inner surface of the hemispherical reflector is plated with a reflecting film, one side of the hemispherical reflector is provided with a notch 320 which penetrates through the top and the bottom of the hemispherical reflector, the wavelength conversion unit 20 is located at the center of the hemispherical light reflecting bowl, the laser beam emitted from the laser source unit 10 passes through the notch 320 and then is projected onto the wavelength conversion unit 20 and excites fluorescence, a part of the fluorescence is directly emitted from the opening 310 of the hemispherical light reflecting bowl, and the other part of the fluorescence is emitted from the opening 310 after being reflected by the hemispherical light reflecting bowl; the base 40 includes a base 410 and a top cover 420, the laser source unit 10, the wavelength conversion unit 20 and the reflection unit 30 are located between the base 410 and the top cover 420, and the top cover 420 is provided with a light through port 421, the light through port 421 corresponds to the opening 310 at the top of the reflection unit 30. Locate laser source unit 10 in the one side of reflection unit 30, both closely arrange, have reduced lighting module's encapsulation volume, between laser source unit 10, wavelength conversion unit 20 and reflection unit 30 encapsulation base 410 and top cap 420, the volume of whole module is fairly little, and simple to operate, and it is high to use the convenient degree. By arranging the hemispherical light reflecting bowl with the opening 310 as the reflecting unit 30 and arranging the wavelength conversion unit 20 at the center of the sphere, when the laser beam emitted from the laser source unit 10 is projected onto the wavelength conversion unit 20 to excite the fluorescence, a part of the fluorescence is directly emitted from the opening 310 of the hemispherical light reflecting bowl, and the other part of the fluorescence is emitted from the opening 310 after being reflected by the hemispherical light reflecting bowl, so that the fluorescence can be prevented from being emitted from the edge of the reflecting unit 30 along a non-specified direction, the central brightness is enhanced, and the safety and the utilization rate of the light source are improved. The hemispherical reflector is made of glass, the smoothness of the optical surface of the hemispherical reflector made of plastic or other materials cannot meet the required requirements, so that the reflected light cannot return to the wavelength conversion unit 20, the optical surface of the hemispherical reflector made of glass is smooth and can meet the requirements, and the glass can be quartz, sapphire or other components.
Although the embodiments of the present invention have been described in the specification, these embodiments are merely provided as a hint, and should not limit the scope of the present invention. Various omissions, substitutions, and changes may be made without departing from the spirit of the invention and are intended to be within the scope of the invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010068059.XA CN111140813A (en) | 2020-01-21 | 2020-01-21 | A laser lighting module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010068059.XA CN111140813A (en) | 2020-01-21 | 2020-01-21 | A laser lighting module |
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| CN111140813A true CN111140813A (en) | 2020-05-12 |
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| CN202010068059.XA Pending CN111140813A (en) | 2020-01-21 | 2020-01-21 | A laser lighting module |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686211A (en) * | 2019-10-23 | 2020-01-14 | 超视界激光科技（苏州）有限公司 | Small-size laser lighting module |
| CN113405043A (en) * | 2021-07-06 | 2021-09-17 | 重庆云创江来光电科技有限公司 | Laser lighting device |
| WO2022062916A1 (en) * | 2020-09-24 | 2022-03-31 | 深圳市中光工业技术研究院 | Light source apparatus and projection device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150960A (en) * | 2018-02-09 | 2018-06-12 | 超视界激光科技（苏州）有限公司 | A kind of high brightness laser illumination module |
| CN110686211A (en) * | 2019-10-23 | 2020-01-14 | 超视界激光科技（苏州）有限公司 | Small-size laser lighting module |
| CN211399630U (en) * | 2020-01-21 | 2020-09-01 | 超视界激光科技（苏州）有限公司 | Laser lighting module |
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2020
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150960A (en) * | 2018-02-09 | 2018-06-12 | 超视界激光科技（苏州）有限公司 | A kind of high brightness laser illumination module |
| CN110686211A (en) * | 2019-10-23 | 2020-01-14 | 超视界激光科技（苏州）有限公司 | Small-size laser lighting module |
| CN211399630U (en) * | 2020-01-21 | 2020-09-01 | 超视界激光科技（苏州）有限公司 | Laser lighting module |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686211A (en) * | 2019-10-23 | 2020-01-14 | 超视界激光科技（苏州）有限公司 | Small-size laser lighting module |
| WO2022062916A1 (en) * | 2020-09-24 | 2022-03-31 | 深圳市中光工业技术研究院 | Light source apparatus and projection device |
| CN113405043A (en) * | 2021-07-06 | 2021-09-17 | 重庆云创江来光电科技有限公司 | Laser lighting device |
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Application publication date: 20200512 |
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