[go: up one dir, main page]

WO2018188117A1 - 激光激发装置及其激发方法 - Google Patents

激光激发装置及其激发方法 Download PDF

Info

Publication number
WO2018188117A1
WO2018188117A1 PCT/CN2017/081946 CN2017081946W WO2018188117A1 WO 2018188117 A1 WO2018188117 A1 WO 2018188117A1 CN 2017081946 W CN2017081946 W CN 2017081946W WO 2018188117 A1 WO2018188117 A1 WO 2018188117A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
laser
medium
conversion medium
emitting device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/081946
Other languages
English (en)
French (fr)
Inventor
夏泽强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou New Crystal Porcelain Material Technology Co Ltd
Original Assignee
Guangzhou New Crystal Porcelain Material Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou New Crystal Porcelain Material Technology Co Ltd filed Critical Guangzhou New Crystal Porcelain Material Technology Co Ltd
Publication of WO2018188117A1 publication Critical patent/WO2018188117A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors

Definitions

  • the invention relates to a laser excitation device and an excitation method thereof, in particular to a laser reflection excitation laser white light source device and an excitation method thereof, which are applied in the field of illumination.
  • the conventional laser excitation is generally performed by illuminating the back of the light-emitting surface of the light-converting medium, and the obtained outgoing light source is emitted from the light-emitting surface (ie, the front surface).
  • the intensity of the laser light is much stronger than that of the general beam, and the spot is concentrated, the general light conversion medium is not easily excited. Therefore, color unevenness often occurs at the edge of the outgoing light source, which affects the quality of the light source of the outgoing light source. Therefore, it is a matter of urgency to provide a laser excitation device with a complete excitation of a light-converting medium, a uniform emission source, and a good light-emitting effect.
  • the present invention provides a laser.
  • the excitation device and the excitation method thereof use the light exiting surface to illuminate the light exiting surface to excite the light conversion medium, and have the advantages that the light conversion medium is completely excited, the outgoing light source is uniform, and the light output effect is good.
  • a laser excitation device comprising a laser emitting device and a light conversion medium disposed facing the laser emitting end of the laser emitting device and maintaining a set spacing (generally between 1 mm and 30 cm) with the laser emitting device
  • the light conversion medium can absorb the laser light emitted by the laser emitting device to obtain an outgoing light source of a desired color temperature.
  • a light exiting surface of the light conversion medium faces a laser emitting end of the laser emitting device, and the laser emitting device is offset from a central axis position of the light converting medium;
  • the laser exciting device further includes a light converting medium disposed a light reflecting layer facing away from the laser emitting end of the laser emitting device; a side of the light reflecting layer facing the light converting medium is a reflecting surface through which the reflecting layer penetrates the light converting medium The laser is reflected back to the light conversion medium for re-excitation conversion, and the area of the reflective surface is slightly larger than the projected area of the light conversion medium facing the laser emitting end of the laser emitting device on the reflecting surface.
  • the laser excitation device of the present application is different from the excitation method of the prior art laser excitation device for emitting light from the front surface of the light conversion medium, and the laser excitation device of the present application is opposite to the laser emission end of the laser emission device.
  • a reflective layer is disposed at the rear, and when the laser is incident from the front surface of the light conversion medium, the excitation light conversion medium emits light and penetrates the light conversion medium.
  • a single excitation does not fully excite the light conversion medium. After the laser light passing through the light conversion medium reaches the reflecting surface of the light reflecting layer, it is reflected back to the light converting medium to be excited again, which not only can completely excite the light converting medium, but also can improve the excitation unevenness of the light converting medium.
  • the light emitted by the light-converting medium is also reflected when it reaches the position of the reflecting surface, and is emitted from the front surface of the light-converting medium.
  • the final exit source (the output source is a mixture of the laser and the light from which the light conversion medium is excited) emits light from the front side of the light conversion medium, overcoming the conventional laser to illuminate the front side of the light conversion medium, and because the laser beam is too strong and The spot is relatively concentrated, and the resulting light conversion medium is incompletely excited.
  • the edge of the outgoing light source often has the disadvantages of uneven color and poor light output.
  • the laser excitation device emits light completely, the emission source is uniform, and the light output effect is good.
  • the reflective layer can be disposed directly behind the side of the laser light-emitting end of the laser light-emitting device, or the light-reflecting layer can be opposite to the laser light-emitting device The exit end is kept at a certain distance.
  • the light reflecting layer is a temperature resistant plate having a whiteness of >85% or the reflective layer comprises a temperature resistant material plate and a reflective coating coated on at least one side of the temperature resistant material plate facing the light conversion medium, the reflective coating It is a silver-plated layer or a temperature-resistant coating with a whiteness of >85%.
  • the preferred reflective layer has a good reflection effect.
  • the silver plating layer is low in cost, easy to prepare, and has a good reflection effect.
  • the light reflecting layer is in the form of a flat plate, a curved plate or other shapes.
  • the laser emitting device emits laser light containing at least a laser having a wavelength range of 200-470 nm, and the optical conversion medium has an emission spectrum of one or more spectral combinations of 460-800 nm, the optical conversion The medium absorbs the laser light to obtain a laser white light exiting light source of 1500-8000 K color temperature.
  • the laser cooperates with a specific conversion spectrum of the light conversion medium to obtain a relatively pure laser white light exiting light source of 1500-8000K color temperature.
  • the light conversion medium is any one of a fluorescent glass, a transparent fluorescent ceramic, a fluorescent single crystal, or a phosphor block.
  • the phosphor block is formed by mixing and solidifying a phosphor with a transparent glue.
  • the light conversion medium is preferably a fluorescent glass, a transparent fluorescent ceramic, or a fluorescent single crystal. Since the energy of the 200-470 nm laser is high, if the light conversion medium uses a fluorescent sheet made of a conventional phosphor plus silica gel, it will be colored by the high temperature generated by the laser in the case of receiving the laser irradiation for a long period of time. Changes and failures, shortening the life of the light source, resulting in unstable light quality.
  • the light conversion medium adopts any one of fluorescent glass, transparent fluorescent ceramics, and fluorescent single crystal
  • the visible light transmittance is high and the property is stable, and the light emitted by the light source can be efficiently and stably converted into one kind.
  • the light conversion medium is any one of a fluorescent glass, a transparent fluorescent ceramic, a fluorescent single crystal, or a phosphor block.
  • Fluorescent glass, transparent fluorescent ceramics or fluorescent single crystals prepared using aluminate, nitride, oxide, oxynitride, silicate, phosphate, sulfate or tungstate systems have higher excitation conversion efficiencies.
  • the visible light transmittance of the light conversion medium is ⁇ 80%.
  • the high-visible transmittance optical conversion medium absorbs the excitation laser and emits light with higher efficiency, achieving high light conversion efficiency.
  • the light-emitting surface of the light conversion medium is coated with an anti-reflection film of 400-800 nm capable of improving the light-emitting effect of the light source.
  • the anti-reflection film is arranged such that more of the excitation laser light source of the 400-800 nm wavelength range is emitted from the light exit surface of the light conversion medium, and the brightness and quality of the exit light source are improved.
  • the laser emitting device is any one of a solid laser, a fiber laser or a semiconductor laser or any combination thereof. When a plurality of laser emitting devices are combined, the laser emitted from the laser emitting device is combined or concentrated. Convert the medium to light.
  • the above-described excitation method of the laser excitation device includes an illumination source that is irradiated with the laser light from the laser emission device and then absorbed by the light conversion medium to obtain a desired color temperature.
  • the excitation method further includes the laser light penetrating the light conversion medium reaching a reflection layer disposed at a position of the light-reflecting layer disposed directly behind the laser light-emitting end of the laser light-emitting device The surface is reflected back to the light converting medium for re-excitation conversion.
  • the excitation method of the laser excitation device of the present application is different from the method of laser excitation using the back surface illumination of the front side, but the front side illumination is used to illuminate the front side, and the reflection layer is added to make the laser light penetrate the light conversion medium after the excitation medium is converted.
  • the second conversion of the light conversion medium can be performed, which greatly improves the conversion efficiency and makes the laser excitation conversion complete.
  • the laser emitting device emits at least a laser having a wavelength range of 200-470 nm to the light conversion medium, and the light conversion medium having an emission spectrum of one or more spectral combinations between 460 and 800 nm absorbs the light Laser, laser light source with a color temperature of 1500-8000K.
  • the present invention has the following advantages:
  • the laser excitation device and the excitation method thereof of the present application adopt a method of providing a light-reflecting layer on the side of the laser-emitting end of the laser-emitting device, and adopting a front-side illumination of the front surface, instead of the conventional back-illuminated front light.
  • the excitation conversion mode enables the laser to perform secondary excitation on the light conversion medium, and the reflective layer also reflects the light emitted by the light conversion medium, so that the light conversion medium is more completely excited, the outgoing light source is more uniform, and the light output effect is better.
  • FIG. 1 is a schematic view showing the overall structure of the embodiment 1-5 of the laser excitation device according to the present invention
  • FIG. 2 is a cross-sectional view of the light-reflecting layer when the reflective layer of the embodiment 1-6 of the laser excitation device of the present invention is a flat temperature-resistant plate having a whiteness of >85%;
  • FIG. 3 is a cross-sectional view of the reflective layer of the embodiment 1-6 of the laser excitation device of the present invention comprising a flat temperature resistant material sheet and a reflective coating applied to the side of the temperature resistant material sheet facing the light conversion medium;
  • FIG. 4 is a cross-sectional view of the reflective layer of the embodiment 1-6 of the laser excitation device according to the present invention, including a flat temperature resistant material plate and a reflective coating on the entire temperature resistant material plate;
  • Figure 5 is a schematic view showing the overall structure of the embodiment 1-5 of the laser excitation device according to the present invention when the reflective layer is in the shape of a curved plate;
  • Figure 6 is a cross-sectional view of the light-reflecting layer of the embodiment 1-6 of the laser excitation device according to the present invention when the reflective layer is a curved plate-shaped temperature-resistant plate having a whiteness of >85%;
  • the reflective layer of the embodiment 1-6 includes a curved plate-shaped temperature-resistant material plate and a reflective layer coated on the surface of the temperature-resistant material plate facing the light conversion medium. Cutaway view
  • FIG. 8 is a cross-sectional view of the reflective layer of the embodiment 1-6 of the laser excitation device according to the present invention, including a curved plate-shaped temperature-resistant material plate and a reflective coating on the entire temperature-resistant material plate;
  • FIG. 9 is a schematic view showing the overall structure of the reflective layer of the laser excitation device according to the sixth embodiment of the present invention.
  • FIG. 10 is a schematic view showing the overall structure of the embodiment 6 of the laser excitation device according to the present invention when the reflective layer is in the shape of a curved plate.
  • a laser excitation device includes a laser emitting device 1 and a laser emitting end 11 facing the laser emitting device 1 and is set with the laser emitting device 1 A pitched light-converting medium 2 capable of absorbing laser light emitted from the laser emitting device 1 to obtain an outgoing light source of a desired color temperature.
  • the light exit surface 21 of the light conversion medium 2 faces the laser exit end 11 of the laser emitting device 1, and the laser emitting device 1 is offset from the central axis position of the light conversion medium 2; the laser excitation device further includes a setting a light reflecting layer 3 facing away from the laser emitting end 11 of the laser emitting device 1; a side of the reflecting layer 3 facing the light converting medium 2 is a reflecting surface 31, and the reflecting layer 3
  • the laser light that has not been completely excited and converted through the light conversion medium 2 is reflected back to the light conversion medium 2 by the reflective surface 31 for re-excitation conversion, and the area of the reflective surface 31 is slightly larger than the light conversion medium 2
  • the laser emitting end 11 facing away from the laser emitting device 1 is on the reflecting surface 31 The projected area.
  • the light-reflecting layer 3 is a temperature-resistant plate having a whiteness of >85% or the light-reflecting layer 3 includes a temperature-resistant material plate 32 and a reflective coating 33 coated on at least one side of the temperature-resistant material plate 32 toward the light conversion medium 2
  • the reflective coating 33 is a silver plated layer or a temperature resistant coating having a whiteness of >85%.
  • the reflective coating layer 33 may be applied only to one side of the temperature resistant material sheet 32 facing the light conversion medium 2, or may be coated with the entire temperature resistant material sheet 32.
  • the light reflecting layer may be in the form of a flat plate or a curved plate.
  • the method for exciting the laser excitation device includes the laser light emitted from the laser emitting device 1 after being irradiated to the light conversion medium 2, and then absorbed by the light conversion medium 2 to obtain an exit light source of a desired color temperature.
  • the excitation method further includes penetrating the laser light that has not been completely excitedly converted through the light conversion medium 2 to a reflective layer disposed directly behind the laser light-emitting end 11 of the laser light-emitting device 1 At the three positions, the reflective surface 31 of the light reflecting layer 3 is reflected back to the optical conversion medium 2 for re-excitation conversion.
  • a laser excitation device includes a laser emitting device 1 and a laser emitting end 11 facing the laser emitting device 1 and is set with the laser emitting device 1 A pitched light-converting medium 2 capable of absorbing laser light emitted from the laser emitting device 1 to obtain an outgoing light source of a desired color temperature.
  • the light exit surface 21 of the light conversion medium 2 faces the laser exit end 11 of the laser emitting device 1, and the laser emitting device 1 is offset from the central axis position of the light conversion medium 2;
  • the laser excitation device further includes a setting a light reflecting layer 3 facing away from the laser emitting end 11 of the laser emitting device 1;
  • a side of the reflecting layer 3 facing the light converting medium 2 is a reflecting surface 31, and the reflecting layer 3
  • the laser light that has not been completely excited and converted through the light conversion medium 2 is reflected back to the light conversion medium 2 by the reflective surface 31 for re-excitation conversion, and the area of the reflective surface 31 is slightly larger than the light conversion medium 2
  • the light-reflecting layer 3 is a temperature-resistant plate having a whiteness of >85% or the light-reflecting layer 3 includes a temperature-resistant material plate 32 and a reflective coating 33 coated on at least one side of the temperature-resistant material plate 32 toward the light conversion medium 2
  • the reflective coating 33 is a silver plated layer or a temperature resistant coating having a whiteness of >85%.
  • the reflective coating layer 33 may be applied only to one side of the temperature resistant material sheet 32 facing the light conversion medium 2, or may be coated with the entire temperature resistant material sheet 32.
  • the light reflecting layer may be in the form of a flat plate or a curved plate.
  • the laser emitted from the laser emitting device 1 contains at least a laser having a wavelength range of 200-470 nm, and the emission spectrum of the optical conversion medium 2 is one or more spectral combinations of 460-800 nm.
  • the light conversion medium 2 absorbs the laser light to obtain a laser white light exiting light source of a color temperature of 1500-8000K.
  • the laser emitting device 1 emits to the light conversion medium 2 a laser light containing at least a wavelength range of 200-470 nm, the emission spectrum being one or more spectral combinations of 460-800 nm 2 Absorbing the laser to obtain a laser white light exiting light source of 1500-8000K color temperature.
  • the laser light that has not been completely excitedly converted through the light conversion medium 2 reaches a reflection disposed rearward of a side of the light-emitting medium 2 facing away from the laser light-emitting end 11 of the laser light-emitting device 1
  • the reflective surface 31 of the light-reflecting layer 3 is reflected back to the light-converting medium 2 for re-excitation conversion.
  • a laser excitation device includes a laser emitting device 1 and a laser emitting end 11 facing the laser emitting device 1 and is set with the laser emitting device 1 A pitched light-converting medium 2 capable of absorbing laser light emitted from the laser emitting device 1 to obtain an outgoing light source of a desired color temperature.
  • the light exit surface 21 of the light conversion medium 2 faces the laser exit end 11 of the laser emitting device 1, and the laser emitting device 1 is offset from the central axis position of the light conversion medium 2;
  • the laser excitation device further includes a setting a light reflecting layer 3 facing away from the laser emitting end 11 of the laser emitting device 1;
  • a side of the reflecting layer 3 facing the light converting medium 2 is a reflecting surface 31, and the reflecting layer 3
  • the laser light that has not been completely excited and converted through the light conversion medium 2 is reflected back to the light conversion medium 2 by the reflective surface 31 for re-excitation conversion, and the area of the reflective surface 31 is slightly larger than the light conversion medium 2
  • the light-reflecting layer 3 is a temperature-resistant plate having a whiteness of >85% or the light-reflecting layer 3 includes a temperature-resistant material plate 32 and a reflective coating 33 coated on at least one side of the temperature-resistant material plate 32 toward the light conversion medium 2
  • the reflective coating 33 is a silver plated layer or a temperature resistant coating having a whiteness of >85%.
  • the reflective coating layer 33 may be applied only to one side of the temperature resistant material sheet 32 facing the light conversion medium 2, or may be coated with the entire temperature resistant material sheet 32.
  • the light reflecting layer may be in the form of a flat plate or a curved plate.
  • the laser emitted from the laser emitting device 1 contains at least a laser having a wavelength range of 200-470 nm, and the emission spectrum of the optical conversion medium 2 is one or more spectral combinations of 460-800 nm.
  • the light conversion medium 2 absorbs the laser light to obtain a laser white light exiting light source of a color temperature of 1500-8000K.
  • the light conversion medium 2 is a phosphor block.
  • the laser emitting device 1 emits to the light conversion medium 2 a laser light containing at least a wavelength range of 200-470 nm, the emission spectrum being one or more spectral combinations of 460-800 nm 2 Absorbing the laser to obtain a laser white light exiting light source of 1500-8000K color temperature.
  • the laser light that has not been completely excitedly converted through the light conversion medium 2 reaches a position of the light-reflecting layer 3 disposed directly behind the laser light-emitting end 11 of the laser light-emitting device 1
  • the reflecting surface 31 of the light reflecting layer 3 is reflected back to the light converting medium 2 for re-excitation conversion.
  • a laser excitation device includes a laser emitting device 1 and a laser emitting end 11 facing the laser emitting device 1 and is set with the laser emitting device 1 A pitched light-converting medium 2 capable of absorbing laser light emitted from the laser emitting device 1 to obtain an outgoing light source of a desired color temperature.
  • the light exit surface 21 of the light conversion medium 2 faces the laser exit end 11 of the laser emitting device 1, and the laser emitting device 1 is offset from the central axis position of the light conversion medium 2; the laser excitation device further includes a setting In the light conversion
  • the medium 2 is opposite to the light reflecting layer 3 directly behind the laser emitting end 11 of the laser emitting device 1; one side of the reflecting layer 3 facing the light converting medium 2 is a reflecting surface 31, and the reflecting layer 3 passes through the reflecting surface 31.
  • the light-reflecting layer 3 is a temperature-resistant plate having a whiteness of >85% or the light-reflecting layer 3 includes a temperature-resistant material plate 32 and a reflective coating 33 coated on at least one side of the temperature-resistant material plate 32 toward the light conversion medium 2
  • the reflective coating 33 is a silver plated layer or a temperature resistant coating having a whiteness of >85%.
  • the reflective coating layer 33 may be applied only to one side of the temperature resistant material sheet 32 facing the light conversion medium 2, or may be coated with the entire temperature resistant material sheet 32.
  • the light reflecting layer may be in the form of a flat plate or a curved plate.
  • the laser emitted from the laser emitting device 1 contains at least a laser having a wavelength range of 200-470 nm, and the emission spectrum of the optical conversion medium 2 is one or more spectral combinations of 460-800 nm.
  • the light conversion medium 2 absorbs the laser light to obtain a laser white light exiting light source of a color temperature of 1500-8000K.
  • the light conversion medium 2 is any one of a fluorescent glass, a transparent fluorescent ceramic or a fluorescent single crystal, and the fluorescent glass, the transparent fluorescent ceramic or the fluorescent single crystal is an aluminate, a nitride, an oxide, an oxynitride, or a silicon. Any of an acid salt, phosphate, sulfate or tungstate system.
  • the laser emitting device 1 emits to the light conversion medium 2 a laser light containing at least a wavelength range of 200-470 nm, the emission spectrum being one or more spectral combinations of 460-800 nm 2 Absorbing the laser to obtain a laser white light exiting light source of 1500-8000K color temperature.
  • the laser light that has not been completely excitedly converted through the light conversion medium 2 reaches a position of the light-reflecting layer 3 disposed directly behind the laser light-emitting end 11 of the laser light-emitting device 1
  • the reflecting surface 31 of the light reflecting layer 3 is reflected back to the light converting medium 2 for re-excitation conversion.
  • a laser excitation device includes a laser emitting device 1 and a laser emitting end 11 facing the laser emitting device 1 and is set with the laser emitting device 1 A pitched light-converting medium 2 capable of absorbing laser light emitted from the laser emitting device 1 to obtain an outgoing light source of a desired color temperature.
  • the light exit surface 21 of the light conversion medium 2 faces the laser exit end 11 of the laser emitting device 1, and the laser emitting device 1 is offset from the central axis position of the light conversion medium 2;
  • the laser excitation device further includes a setting a light reflecting layer 3 facing away from the laser emitting end 11 of the laser emitting device 1;
  • a side of the reflecting layer 3 facing the light converting medium 2 is a reflecting surface 31, and the reflecting layer 3
  • the laser light that has not been completely excited and converted through the light conversion medium 2 is reflected back to the light conversion medium 2 by the reflective surface 31 for re-excitation conversion, and the area of the reflective surface 31 is slightly larger than the light conversion medium 2
  • the light-reflecting layer 3 is a temperature-resistant plate having a whiteness of >85% or the light-reflecting layer 3 includes a temperature-resistant material plate 32 and a reflective coating 33 coated on at least one side of the temperature-resistant material plate 32 toward the light conversion medium 2
  • the reflective coating 33 is Silver-plated layer or a temperature-resistant coating with a whiteness >85%.
  • the reflective coating layer 33 may be applied only to one side of the temperature resistant material sheet 32 facing the light conversion medium 2, or may be coated with the entire temperature resistant material sheet 32.
  • the light reflecting layer may be in the form of a flat plate or a curved plate.
  • the laser emitted from the laser emitting device 1 contains at least a laser having a wavelength range of 200-470 nm, and the emission spectrum of the optical conversion medium 2 is one or more spectral combinations of 460-800 nm.
  • the light conversion medium 2 absorbs the laser light to obtain a laser white light exiting light source of a color temperature of 1500-8000K.
  • the light conversion medium 2 is any one of a fluorescent glass, a transparent fluorescent ceramic or a fluorescent single crystal, and the fluorescent glass, the transparent fluorescent ceramic or the fluorescent single crystal is an aluminate, a nitride, an oxide, an oxynitride, or a silicon. Any of an acid salt, phosphate, sulfate or tungstate system.
  • the visible light transmittance of the light conversion medium 2 is ⁇ 80%.
  • the laser emitting device 1 emits to the light conversion medium 2 a laser light containing at least a wavelength range of 200-470 nm, the emission spectrum being one or more spectral combinations of 460-800 nm 2 Absorbing the laser to obtain a laser white light exiting light source of 1500-8000K color temperature.
  • the laser light that has not been completely excitedly converted through the light conversion medium 2 reaches a position of the light-reflecting layer 3 disposed directly behind the laser light-emitting end 11 of the laser light-emitting device 1
  • the reflecting surface 31 of the light reflecting layer 3 is reflected back to the light converting medium 2 for re-excitation conversion.
  • a laser excitation device includes a laser emitting device 1 and a laser emitting end 11 facing the laser emitting device 1 and is disposed
  • the laser emitting device 1 holds a light-converting medium 2 having a set pitch, which can absorb the laser light emitted from the laser emitting device 1 to obtain an outgoing light source of a desired color temperature.
  • the light exit surface 21 of the light conversion medium 2 faces the laser exit end 11 of the laser emitting device 1, and the laser emitting device 1 is offset from the central axis position of the light conversion medium 2;
  • the laser excitation device further includes a setting a light reflecting layer 3 facing away from the laser emitting end 11 of the laser emitting device 1;
  • a side of the reflecting layer 3 facing the light converting medium 2 is a reflecting surface 31, and the reflecting layer 3
  • the laser light that has not been completely excited and converted through the light conversion medium 2 is reflected back to the light conversion medium 2 by the reflective surface 31 for re-excitation conversion, and the area of the reflective surface 31 is slightly larger than the light conversion medium 2
  • the light-reflecting layer 3 is a temperature-resistant plate having a whiteness of >85% or the light-reflecting layer 3 includes a temperature-resistant material plate 32 and a reflective coating 33 coated on at least one side of the temperature-resistant material plate 32 toward the light conversion medium 2
  • the reflective coating 33 is a silver plated layer or a temperature resistant coating having a whiteness of >85%.
  • the reflective coating layer 33 may be applied only to one side of the temperature resistant material sheet 32 facing the light conversion medium 2, or may be coated with the entire temperature resistant material sheet 32.
  • the light reflecting layer may be in the form of a flat plate or a curved plate.
  • the laser emitted from the laser emitting device 1 contains at least a laser having a wavelength range of 200-470 nm, and the emission spectrum of the optical conversion medium 2 is one or more spectral combinations of 460-800 nm.
  • the light conversion medium 2 absorbs the laser light to obtain a laser white light exiting light source of a color temperature of 1500-8000K.
  • Light exit surface of the light conversion medium 2 21 is coated with an anti-reflection film 22 of 400-800 nm which can enhance the light-emitting effect of the outgoing light source.
  • the laser emitting device 1 emits to the light conversion medium 2 a laser light containing at least a wavelength range of 200-470 nm, the emission spectrum being one or more spectral combinations of 460-800 nm 2 Absorbing the laser to obtain a laser white light exiting light source of 1500-8000K color temperature.
  • the laser light that has not been completely excitedly converted through the light conversion medium 2 reaches a position of the light-reflecting layer 3 disposed directly behind the laser light-emitting end 11 of the laser light-emitting device 1
  • the reflecting surface 31 of the light reflecting layer 3 is reflected back to the light converting medium 2 for re-excitation conversion.
  • the laser excitation device and the excitation method thereof according to the present invention are not limited to the above embodiments, and any improvement or substitution according to the principles of the present invention should be within the scope of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Lasers (AREA)

Abstract

提供一种激光激发装置，包括激光发射装置（1）以及面对所述激光发射装置（1）的激光出射端设置并与该激光发射装置（1）保持有设定的间距的光转换介质（2），所述光转换介质（2）能吸收所述激光发射装置（1）发射出的激光并获得所需色温的出射光源。该激光激发装置克服了现有激光通过光转换介质激发采用的是背面照射正面出光所导致的出射光源的光源质量不佳的缺点，其采用正面照射正面出光的方式激发光转换介质，具有激光激发完全、出射光源质量佳且质量稳定的优点。

Description

激光激发装置及其激发方法 技术领域
本发明涉及一种激光激发装置及其激发方法，特别是一种激光反射激发激光白光光源装置及其激发方法，应用在照明领域。
背景技术
现有的激光激发一般是在光转换介质的光线出射面背部进行照射对其进行激发，获得的出射光源由光源出射面(即正面)出射。但由于激光的光强较一般光束强得多，且光斑比较集中，一般的光转换介质不易完全被激发，因而在出射光源的边沿常出现颜色不均等现象，影响了出射光源的光源质量。因此提供一种光转换介质激发完全、出射光源均匀、出光效果佳的激光激发装置及其激发方法己成为当务之亟。
发明内容
为了克服现有激光通过光转换介质激发采用的是光线出射面背面照射光线出射面出光所导致的光转换介质激发不完全、出射光源不均匀、出光效果不佳的缺点，本发明提供一种激光激发装置及其激发方法，其采用光线出射面照射光线出射面出光的方式激发光转换介质，具有光转换介质激发完全、出射光源均匀、出光效果佳的优点。
本发明的技术方案如下：
一种激光激发装置，包括激光发射装置以及面对所述激光发射装置的激光出射端设置并与该激光发射装置保持有设定的间距(一般在1mm-30cm之间)的光转换介质，所述光转换介质能吸收所述激光发射装置发射出的激光，获得所需色温的出射光源。所述光转换介质的光线出射面朝向所述激光发射装置的激光出射端，且该激光发射装置偏离所述光转换介质的中心轴线位置；所述激光激发装置还包括设置在所述光转换介质背对所述激光发射装置的激光出射端一面正后方的反光层；所述反光层朝向光转换介质的一面为反射面，所述反光层通过该反射面将穿透所述光转换介质的所述激光反射回该光转换介质进行再次激发转换，所述反射面的面积略大于所述光转换介质背对所述激光发射装置的激光出射端一面在该反射面上的投影面积。
区别于现有激光激发装置所采用的在光转换介质的背面照射而从其正面出射的激发方法，本申请的激光激发装置在光转换介质背对所述激光发射装置的激光出射端一面的正后方设置了反光层，当激光从光转换介质正面入射后，激发光转换介质发光并穿透该光转换介质， 单次激发不能完全激发光转换介质。所述穿透光转换介质的激光到达反光层的反射面后，被反射回光转换介质对其进行再次激发，不仅能将光转换介质激发完全，而且能改善光转换介质激发不均匀的情况。同时光转换介质被激发发出的光到达反射面位置时也被反射，从光转换介质正面出光。最终出射光源(出射光源为所述激光和光转换介质被激发发出的光的混合体)从光转换介质的正面出光，克服了传统激光对光转换介质背面照射正面出光，以及由于激光光束太强且光斑比较集中，所导致的光转换介质激发不完全，出射光源的边沿常出现颜色不均现象、出光效果不佳的缺点。该激光激发装置的出射光激发完全、出射光源均匀、出光效果佳。其中，反光层可紧贴设置于所述光转换介质背对所述激光发射装置的激光出射端一面的正后方，或者该反光层可与所述光转换介质背对所述激光发射装置的激光出射端一面保持一定的间距。
所述反光层为白度＞85％的耐温板材或者所述反光层包括耐温材质板以及至少涂制在所述耐温材质板朝向光转换介质一面的反射涂层，所述反射涂层为镀银层或白度＞85％的耐温涂层。
该优选的反光层反射效果佳。镀银层成本低、易制备且反射效果好。
所述反光层为平板状、弧形板状或其他形状。
所述激光发射装置发射出的激光里至少含有波长范围介于200-470nm的激光，所述光转换介质的发射光谱为介于460-800nm中的一种或多种光谱组合，所述光转换介质吸收所述激光，获得1500-8000K色温的激光白光出射光源。
所述激光配合特定发射光谱的光转换介质能获得1500-8000K色温的较纯的激光白光出射光源。
所述光转换介质为荧光玻璃、透明荧光陶瓷、荧光单晶或荧光粉块体中的任一种。
所述荧光粉块体由荧光粉与透明胶水混合凝固而成。其中，光转换介质采用荧光玻璃、透明荧光陶瓷、荧光单晶中的任一种为优选方案。由于200-470nm的激光的能量较高，若光转换介质采用传统的荧光粉加硅胶所制成的荧光片，其在长期在接受该激光照射的情况下，会受激光产生的高温而出现颜色变化和失效，减短光源的寿命、导致出光质量不稳定。而若光转换介质采用荧光玻璃、透明荧光陶瓷、荧光单晶中的任一种时，其可见光透过率高且性质稳定，能高效稳定地将所述光源所发出的光转换为一种可标准应用的白光，光源的寿命长且出光质量稳定，大大节省成本。
所述光转换介质为荧光玻璃、透明荧光陶瓷、荧光单晶或荧光粉块体中的任一种。
采用铝酸盐、氮化物、氧化物、氮氧化物、硅酸盐、磷酸盐、硫酸盐或钨酸盐体系所制备的荧光玻璃、透明荧光陶瓷或荧光单晶的激发转换效率更高。
该光转换介质的可见光透过率≥80％。
高可见光透过率的光转换介质，吸收激发激光及出光的效率更高，实现了高的光转换效率。
所述光转换介质的光线出射面上镀有能提升出射光源出光效果的400-800nm的增透膜。
增透膜的设置使得更多激发转换成的400-800nm波长范围的出射激光白光光源从光转换介质的光线出射面出射效果更好，提升了出射光源的亮度和质量。
所述激光发射装置为固体激光器、光纤激光器或半导体激光中的任一种或其任意组合，当采用多种激光发射装置组合时，所述激光发射装置射出的激光经合束或聚光后射向光转换介质。
上述的激光激发装置的激发方法包括所述激光发射装置发射出的激光照射到光转换介质后，被该光转换介质吸收，获得所需色温的出射光源。所述激发方法还包括穿透该光转换介质的所述激光到达设置在所述光转换介质背对所述激光发射装置的激光出射端一面正后方的反光层位置时，被该反光层的反射面反射回所述光转换介质进行再次激发转换。
本申请的激光激发装置的激发方法不同于现有激光激发采用背面照射正面出光的方式，而是采用正面照射正面出光，通过增设反光层，使得激发光转换介质后穿透该光转换介质的激光可以对光转换介质进行二次转换，大大提高了转换效率，使得激光激发转换完全。
所述激光发射装置向所述光转换介质发射出至少含有波长范围介于200-470nm的激光，所述发射光谱为介于460-800nm中的一种或多种光谱组合的光转换介质吸收该激光，获得1500-8000K色温的激光白光出射光源。
通过上述优选的入射激光和光转换介质的配合，可获得纯度好的所述色温的激光白光出射光源。
与现有技术相比，本发明申请具有以下优点：
1)本申请的激光激发装置及其激发方法通过在光转换介质背对所述激光发射装置的激光出射端一面设置一反光层的方式，采用正面照射正面出光，替代了的传统背面照射正面出光的激发转换方式，使得激光能对光转换介质进行二次激发，同时反光层也对光转换介质被激发发出的光进行反射，因此光转换介质激发更完全、出射光源更均匀、出光效果更好；
2)优选的反光层、光转换介质搭配可以获得高纯度的所述色温的激光白光出射光；
3)所述光转换介质的光线出射面上增透膜的设置，提升了出射光源的亮度和质量。
附图说明
图1是本发明所述的激光激发装置实施例1-5反光层为平板状时的整体结构示意图；
图2是本发明所述的激光激发装置实施例1-6反光层为白度＞85％的平板状耐温板材时反光层的剖视图；
图3是本发明所述的激光激发装置实施例1-6反光层包括平板状耐温材质板以及涂制在所述耐温材质板朝向光转换介质一面的反射涂层时反光层的剖视图；
图4是本发明所述的激光激发装置实施例1-6反光层包括平板状耐温材质板以及涂制整个所述耐温材质板上的反射涂层时反光层的剖视图；
图5是本发明所述的激光激发装置实施例1-5反光层为弧形板状时的整体结构示意图；
图6是本发明所述的激光激发装置实施例1-6反光层为白度＞85％的弧形板状耐温板材时反光层的剖视图；
图7是本发明所述的激光激发装置实施例1-6反光层包括弧形板状耐温材质板以及涂制在所述耐温材质板朝向光转换介质一面的反射涂层时反光层的剖视图；
图8是本发明所述的激光激发装置实施例1-6反光层包括弧形板状耐温材质板以及涂制整个所述耐温材质板上的反射涂层时反光层的剖视图；
图9是本发明所述的激光激发装置实施例6反光层为平板状时的整体结构示意图；
图10是本发明所述的激光激发装置实施例6反光层为弧形板状时的整体结构示意图。
标号说明：
激光发射装置1、光转换介质2、反光层3、激光出射端11、光线出射面21、增透膜22、反射面31、耐温材质板32、反射涂层33。
具体实施方式
下面结合说明书附图1-10对本发明的技术方案进行详细说明。
实施例1
如图1-8所示，本发明所述的一种激光激发装置，包括激光发射装置1以及面对所述激光发射装置1的激光出射端11设置并与该激光发射装置1保持有设定的间距的光转换介质2，所述光转换介质2能吸收所述激光发射装置1发射出的激光，获得所需色温的出射光源。所述光转换介质2的光线出射面21朝向所述激光发射装置1的激光出射端11，且该激光发射装置1偏离所述光转换介质2的中心轴线位置；所述激光激发装置还包括设置在所述光转换介质2背对所述激光发射装置1的激光出射端11一面正后方的反光层3；所述反光层3朝向光转换介质2的一面为反射面31，所述反光层3通过该反射面31将穿透所述光转换介质2未被完全激发转换的所述激光反射回该光转换介质2进行再次激发转换，所述反射面31的面积略大于所述光转换介质2背对所述激光发射装置1的激光出射端11一面在该反射面31上 的投影面积。所述反光层3为白度＞85％的耐温板材或者所述反光层3包括耐温材质板32以及至少涂制在所述耐温材质板32朝向光转换介质2一面的反射涂层33，所述反射涂层33为镀银层或白度＞85％的耐温涂层。该反射涂层33可以仅涂制在所述耐温材质板32朝向光转换介质2的一面，也可以涂布整个耐温材质板32。所述反光层可为平板状或弧形板状。
所述的激光激发装置的激发方法包括所述激光发射装置1发射出的激光照射到光转换介质2后，被该光转换介质2吸收，获得所需色温的出射光源。所述激发方法还包括穿透该光转换介质2未被完全激发转换的所述激光到达设置在所述光转换介质2背对所述激光发射装置1的激光出射端11一面正后方的反光层3位置时，被该反光层3的反射面31反射回所述光转换介质2进行再次激发转换。
实施例2
如图1-8所示，本发明所述的一种激光激发装置，包括激光发射装置1以及面对所述激光发射装置1的激光出射端11设置并与该激光发射装置1保持有设定的间距的光转换介质2，所述光转换介质2能吸收所述激光发射装置1发射出的激光，获得所需色温的出射光源。所述光转换介质2的光线出射面21朝向所述激光发射装置1的激光出射端11，且该激光发射装置1偏离所述光转换介质2的中心轴线位置；所述激光激发装置还包括设置在所述光转换介质2背对所述激光发射装置1的激光出射端11一面正后方的反光层3；所述反光层3朝向光转换介质2的一面为反射面31，所述反光层3通过该反射面31将穿透所述光转换介质2未被完全激发转换的所述激光反射回该光转换介质2进行再次激发转换，所述反射面31的面积略大于所述光转换介质2背对所述激光发射装置1的激光出射端11一面在该反射面31上的投影面积。所述反光层3为白度＞85％的耐温板材或者所述反光层3包括耐温材质板32以及至少涂制在所述耐温材质板32朝向光转换介质2一面的反射涂层33，所述反射涂层33为镀银层或白度＞85％的耐温涂层。该反射涂层33可以仅涂制在所述耐温材质板32朝向光转换介质2的一面，也可以涂布整个耐温材质板32。所述反光层可为平板状或弧形板状。所述激光发射装置1发射出的激光里至少含有波长范围介于200-470nm的激光，所述光转换介质2的发射光谱为介于460-800nm中的一种或多种光谱组合，所述光转换介质2吸收所述激光，获得1500-8000K色温的激光白光出射光源。
所述激光发射装置1向所述光转换介质2发射出至少含有波长范围介于200-470nm的激光，所述发射光谱为介于460-800nm中的一种或多种光谱组合的光转换介质2吸收该激光，获得1500-8000K色温的激光白光出射光源。穿透该光转换介质2未被完全激发转换的所述激光到达设置在所述光转换介质2背对所述激光发射装置1的激光出射端11一面正后方的反光 层3位置时，被该反光层3的反射面31反射回所述光转换介质2进行再次激发转换。
实施例3
如图1-8所示，本发明所述的一种激光激发装置，包括激光发射装置1以及面对所述激光发射装置1的激光出射端11设置并与该激光发射装置1保持有设定的间距的光转换介质2，所述光转换介质2能吸收所述激光发射装置1发射出的激光，获得所需色温的出射光源。所述光转换介质2的光线出射面21朝向所述激光发射装置1的激光出射端11，且该激光发射装置1偏离所述光转换介质2的中心轴线位置；所述激光激发装置还包括设置在所述光转换介质2背对所述激光发射装置1的激光出射端11一面正后方的反光层3；所述反光层3朝向光转换介质2的一面为反射面31，所述反光层3通过该反射面31将穿透所述光转换介质2未被完全激发转换的所述激光反射回该光转换介质2进行再次激发转换，所述反射面31的面积略大于所述光转换介质2背对所述激光发射装置1的激光出射端11一面在该反射面31上的投影面积。所述反光层3为白度＞85％的耐温板材或者所述反光层3包括耐温材质板32以及至少涂制在所述耐温材质板32朝向光转换介质2一面的反射涂层33，所述反射涂层33为镀银层或白度＞85％的耐温涂层。该反射涂层33可以仅涂制在所述耐温材质板32朝向光转换介质2的一面，也可以涂布整个耐温材质板32。所述反光层可为平板状或弧形板状。所述激光发射装置1发射出的激光里至少含有波长范围介于200-470nm的激光，所述光转换介质2的发射光谱为介于460-800nm中的一种或多种光谱组合，所述光转换介质2吸收所述激光，获得1500-8000K色温的激光白光出射光源。所述光转换介质2为荧光粉块体。
所述激光发射装置1向所述光转换介质2发射出至少含有波长范围介于200-470nm的激光，所述发射光谱为介于460-800nm中的一种或多种光谱组合的光转换介质2吸收该激光，获得1500-8000K色温的激光白光出射光源。穿透该光转换介质2未被完全激发转换的所述激光到达设置在所述光转换介质2背对所述激光发射装置1的激光出射端11一面正后方的反光层3位置时，被该反光层3的反射面31反射回所述光转换介质2进行再次激发转换。
实施例4
如图1-8所示，本发明所述的一种激光激发装置，包括激光发射装置1以及面对所述激光发射装置1的激光出射端11设置并与该激光发射装置1保持有设定的间距的光转换介质2，所述光转换介质2能吸收所述激光发射装置1发射出的激光，获得所需色温的出射光源。所述光转换介质2的光线出射面21朝向所述激光发射装置1的激光出射端11，且该激光发射装置1偏离所述光转换介质2的中心轴线位置；所述激光激发装置还包括设置在所述光转换 介质2背对所述激光发射装置1的激光出射端11一面正后方的反光层3；所述反光层3朝向光转换介质2的一面为反射面31，所述反光层3通过该反射面31将穿透所述光转换介质2未被完全激发转换的所述激光反射回该光转换介质2进行再次激发转换，所述反射面31的面积略大于所述光转换介质2背对所述激光发射装置1的激光出射端11一面在该反射面31上的投影面积。所述反光层3为白度＞85％的耐温板材或者所述反光层3包括耐温材质板32以及至少涂制在所述耐温材质板32朝向光转换介质2一面的反射涂层33，所述反射涂层33为镀银层或白度＞85％的耐温涂层。该反射涂层33可以仅涂制在所述耐温材质板32朝向光转换介质2的一面，也可以涂布整个耐温材质板32。所述反光层可为平板状或弧形板状。所述激光发射装置1发射出的激光里至少含有波长范围介于200-470nm的激光，所述光转换介质2的发射光谱为介于460-800nm中的一种或多种光谱组合，所述光转换介质2吸收所述激光，获得1500-8000K色温的激光白光出射光源。所述光转换介质2为荧光玻璃、透明荧光陶瓷或荧光单晶中的任一种，该荧光玻璃、透明荧光陶瓷或荧光单晶为铝酸盐、氮化物、氧化物、氮氧化物、硅酸盐、磷酸盐、硫酸盐或钨酸盐体系中的任一种。
所述激光发射装置1向所述光转换介质2发射出至少含有波长范围介于200-470nm的激光，所述发射光谱为介于460-800nm中的一种或多种光谱组合的光转换介质2吸收该激光，获得1500-8000K色温的激光白光出射光源。穿透该光转换介质2未被完全激发转换的所述激光到达设置在所述光转换介质2背对所述激光发射装置1的激光出射端11一面正后方的反光层3位置时，被该反光层3的反射面31反射回所述光转换介质2进行再次激发转换。
实施例5
如图1-8所示，本发明所述的一种激光激发装置，包括激光发射装置1以及面对所述激光发射装置1的激光出射端11设置并与该激光发射装置1保持有设定的间距的光转换介质2，所述光转换介质2能吸收所述激光发射装置1发射出的激光，获得所需色温的出射光源。所述光转换介质2的光线出射面21朝向所述激光发射装置1的激光出射端11，且该激光发射装置1偏离所述光转换介质2的中心轴线位置；所述激光激发装置还包括设置在所述光转换介质2背对所述激光发射装置1的激光出射端11一面正后方的反光层3；所述反光层3朝向光转换介质2的一面为反射面31，所述反光层3通过该反射面31将穿透所述光转换介质2未被完全激发转换的所述激光反射回该光转换介质2进行再次激发转换，所述反射面31的面积略大于所述光转换介质2背对所述激光发射装置1的激光出射端11一面在该反射面31上的投影面积。所述反光层3为白度＞85％的耐温板材或者所述反光层3包括耐温材质板32以及至少涂制在所述耐温材质板32朝向光转换介质2一面的反射涂层33，所述反射涂层33为 镀银层或白度＞85％的耐温涂层。该反射涂层33可以仅涂制在所述耐温材质板32朝向光转换介质2的一面，也可以涂布整个耐温材质板32。所述反光层可为平板状或弧形板状。所述激光发射装置1发射出的激光里至少含有波长范围介于200-470nm的激光，所述光转换介质2的发射光谱为介于460-800nm中的一种或多种光谱组合，所述光转换介质2吸收所述激光，获得1500-8000K色温的激光白光出射光源。所述光转换介质2为荧光玻璃、透明荧光陶瓷或荧光单晶中的任一种，该荧光玻璃、透明荧光陶瓷或荧光单晶为铝酸盐、氮化物、氧化物、氮氧化物、硅酸盐、磷酸盐、硫酸盐或钨酸盐体系中的任一种。该光转换介质2的可见光透过率≥80％。
所述激光发射装置1向所述光转换介质2发射出至少含有波长范围介于200-470nm的激光，所述发射光谱为介于460-800nm中的一种或多种光谱组合的光转换介质2吸收该激光，获得1500-8000K色温的激光白光出射光源。穿透该光转换介质2未被完全激发转换的所述激光到达设置在所述光转换介质2背对所述激光发射装置1的激光出射端11一面正后方的反光层3位置时，被该反光层3的反射面31反射回所述光转换介质2进行再次激发转换。
实施例6
如图9、10、2-4、6-8所示，本发明所述的一种激光激发装置，包括激光发射装置1以及面对所述激光发射装置1的激光出射端11设置并与该激光发射装置1保持有设定的间距的光转换介质2，所述光转换介质2能吸收所述激光发射装置1发射出的激光，获得所需色温的出射光源。所述光转换介质2的光线出射面21朝向所述激光发射装置1的激光出射端11，且该激光发射装置1偏离所述光转换介质2的中心轴线位置；所述激光激发装置还包括设置在所述光转换介质2背对所述激光发射装置1的激光出射端11一面正后方的反光层3；所述反光层3朝向光转换介质2的一面为反射面31，所述反光层3通过该反射面31将穿透所述光转换介质2未被完全激发转换的所述激光反射回该光转换介质2进行再次激发转换，所述反射面31的面积略大于所述光转换介质2背对所述激光发射装置1的激光出射端11一面在该反射面31上的投影面积。所述反光层3为白度＞85％的耐温板材或者所述反光层3包括耐温材质板32以及至少涂制在所述耐温材质板32朝向光转换介质2一面的反射涂层33，所述反射涂层33为镀银层或白度＞85％的耐温涂层。该反射涂层33可以仅涂制在所述耐温材质板32朝向光转换介质2的一面，也可以涂布整个耐温材质板32。所述反光层可为平板状或弧形板状。所述激光发射装置1发射出的激光里至少含有波长范围介于200-470nm的激光，所述光转换介质2的发射光谱为介于460-800nm中的一种或多种光谱组合，所述光转换介质2吸收所述激光，获得1500-8000K色温的激光白光出射光源。所述光转换介质2的光线出射面 21上镀有能提升出射光源出光效果的400-800nm的增透膜22。
所述激光发射装置1向所述光转换介质2发射出至少含有波长范围介于200-470nm的激光，所述发射光谱为介于460-800nm中的一种或多种光谱组合的光转换介质2吸收该激光，获得1500-8000K色温的激光白光出射光源。穿透该光转换介质2未被完全激发转换的所述激光到达设置在所述光转换介质2背对所述激光发射装置1的激光出射端11一面正后方的反光层3位置时，被该反光层3的反射面31反射回所述光转换介质2进行再次激发转换。
本发明所述的激光激发装置及其激发方法并不只仅仅局限于上述实施例，凡是依据本发明原理的任何改进或替换，均应在本发明的保护范围之内。

Claims (9)

  1. 一种激光激发装置，包括激光发射装置(1)以及面对所述激光发射装置(1)的激光出射端(11)设置并与该激光发射装置(1)保持有设定的间距的光转换介质(2)，所述光转换介质(2)能吸收所述激光发射装置(1)发射出的激光，获得所需色温的出射光源，其特征在于：所述光转换介质(2)的光线出射面(21)朝向所述激光发射装置(1)的激光出射端(11)，且该激光发射装置(1)偏离所述光转换介质(2)的中心轴线位置；所述激光激发装置还包括设置在所述光转换介质(2)背对所述激光发射装置(1)的激光出射端(11)一面正后方的反光层(3)；所述反光层(3)朝向光转换介质(2)的一面为反射面(31)，所述反光层(3)通过该反射面(31)将穿透所述光转换介质(2)的所述激光反射回该光转换介质(2)进行再次激发转换，所述反射面(31)的面积略大于所述光转换介质(2)背对所述激光发射装置(1)的激光出射端(11)一面在该反射面(31)上的投影面积。
  2. 根据权利要求1所述的激光激发装置，其特征在于：所述反光层(3)为白度＞85％的耐温板材或者所述反光层(3)包括耐温材质板(32)以及至少涂制在所述耐温材质板(32)朝向光转换介质(2)一面的反射涂层(33)，所述反射涂层(33)为镀银层或白度＞85％的耐温涂层。
  3. 根据权利要求2所述的激光激发装置，其特征在于：所述激光发射装置(1)发射出的激光里至少含有波长范围介于200-470nm的激光，所述光转换介质(2)的发射光谱为介于460-800nm中的一种或多种光谱组合，所述光转换介质(2)吸收所述激光，获得1500-8000K色温的激光白光出射光源。
  4. 根据权利要求3所述的激光激发装置，其特征在于：所述光转换介质(2)为荧光玻璃、透明荧光陶瓷、荧光单晶或荧光粉块体中的任一种。
  5. 根据权利要求4所述的激光激发装置，其特征在于：所述光转换介质(2)为荧光玻璃、透明荧光陶瓷或荧光单晶中的任一种，该荧光玻璃、透明荧光陶瓷或荧光单晶为铝酸盐、氮化物、氧化物、氮氧化物、硅酸盐、磷酸盐、硫酸盐或钨酸盐体系中的任一种。
  6. 根据权利要求5所述的激光激发装置，其特征在于：该光转换介质(2)的可见光透过率≥80％。
  7. 根据权利要求3所述的激光激发装置，其特征在于：所述光转换介质(2)的光线出射面(21)上镀有能提升出射光源出光效果的400-800nm的增透膜(22)。
  8. 根据权利要求1-7任一项所述的激光激发装置的激发方法，包括所述激光发射装置(1)发射出的激光照射到光转换介质(2)后，被该光转换介质(2)吸收，获得所需色温的出射光源，其特征在于：所述激发方法还包括穿透该光转换介质(2)的所述激光到达设置在 所述光转换介质(2)背对所述激光发射装置(1)的激光出射端(11)一面正后方的反光层(3)位置时，被该反光层(3)的反射面(31)反射回所述光转换介质(2)进行再次激发转换。
  9. 根据权利要求8所述的激光激发装置的激发方法，其特征在于：所述激光发射装置(1)向所述光转换介质(2)发射出至少含有波长范围介于200-470nm的激光，所述发射光谱为介于460-800nm中的一种或多种光谱组合的光转换介质(2)吸收该激光，获得1500-8000K色温的激光白光出射光源。
PCT/CN2017/081946 2017-04-14 2017-04-26 激光激发装置及其激发方法 Ceased WO2018188117A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710245037.4A CN108916825A (zh) 2017-04-14 2017-04-14 激光激发装置及其激发方法
CN201710245037.4 2017-04-14

Publications (1)

Publication Number Publication Date
WO2018188117A1 true WO2018188117A1 (zh) 2018-10-18

Family

ID=63792124

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/081946 Ceased WO2018188117A1 (zh) 2017-04-14 2017-04-26 激光激发装置及其激发方法

Country Status (2)

Country Link
CN (1) CN108916825A (zh)
WO (1) WO2018188117A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07135367A (ja) * 1993-11-09 1995-05-23 Sumitomo Metal Mining Co Ltd 反射鏡およびこれを用いた波長可変レーザ装置
US5436920A (en) * 1993-05-18 1995-07-25 Matsushita Electric Industrial Co., Ltd. Laser device
CN101087055A (zh) * 2006-06-06 2007-12-12 株式会社拓普康 光学部件的粘合方法、光学部件一体结构和激光振荡装置
CN102890398A (zh) * 2012-09-27 2013-01-23 深圳市绎立锐光科技开发有限公司 发光装置及相关投影系统
US20130329421A1 (en) * 2011-02-23 2013-12-12 Klaus Finsterbusch Optical Element and Lighting Device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207247109U (zh) * 2017-04-14 2018-04-17 广州市新晶瓷材料科技有限公司 激光激发装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5436920A (en) * 1993-05-18 1995-07-25 Matsushita Electric Industrial Co., Ltd. Laser device
JPH07135367A (ja) * 1993-11-09 1995-05-23 Sumitomo Metal Mining Co Ltd 反射鏡およびこれを用いた波長可変レーザ装置
CN101087055A (zh) * 2006-06-06 2007-12-12 株式会社拓普康 光学部件的粘合方法、光学部件一体结构和激光振荡装置
US20130329421A1 (en) * 2011-02-23 2013-12-12 Klaus Finsterbusch Optical Element and Lighting Device
CN102890398A (zh) * 2012-09-27 2013-01-23 深圳市绎立锐光科技开发有限公司 发光装置及相关投影系统

Also Published As

Publication number Publication date
CN108916825A (zh) 2018-11-30

Similar Documents

Publication Publication Date Title
US11592159B2 (en) Light source system and lighting apparatus
JP5124978B2 (ja) 発光装置
TW569479B (en) White-light LED applying omnidirectional reflector
CN102141723B (zh) 投影型影像显示装置
JP2017198982A (ja) 波長変換部材、光源、及び車両用ヘッドランプ
CN102519015A (zh) 荧光激光板及其适用的光源系统
CN205450551U (zh) 色轮模组、光源模组和投影系统
CN109282246A (zh) 一种波长转换装置、光源模组及照明灯
CN209388102U (zh) 一种波长转换装置、激光光源系统及投影机
TWI634380B (zh) 色輪模組與光源模組
JP5737861B2 (ja) 照明装置及び車両用前照灯
WO2020114199A1 (zh) 一种照明光源及车灯
CN205002051U (zh) 波长转换装置、发光装置和灯具
CN105258076B (zh) 发光装置和灯具
CN209309907U (zh) 一种波长转换装置、光源模组及照明灯
WO2018188117A1 (zh) 激光激发装置及其激发方法
TWI680307B (zh) 白光光源系統
CN207247109U (zh) 激光激发装置
CN110388578A (zh) 一种激光照明光源
CN206850218U (zh) 小角度激光光源获得装置
CN207316491U (zh) 高显色指数激光白光获得装置
WO2018188118A1 (zh) 激光激发设备及其激发方法
CN108736305A (zh) 小角度激光光源获得设备及其实现方法
CN112114487A (zh) 一种多色激光光源合光结构、投影装置及照明设备
CN108730922B (zh) 一种激光发生装置及其实现方法

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 05/03/2020)

122 Ep: pct application non-entry in european phase

Ref document number: 17905677

Country of ref document: EP

Kind code of ref document: A1