CN104141923A - Converter for converting a laser device into a lighting device - Google Patents
Converter for converting a laser device into a lighting device Download PDFInfo
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- CN104141923A CN104141923A CN201310167884.5A CN201310167884A CN104141923A CN 104141923 A CN104141923 A CN 104141923A CN 201310167884 A CN201310167884 A CN 201310167884A CN 104141923 A CN104141923 A CN 104141923A
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Landscapes
- Semiconductor Lasers (AREA)
Abstract
A detachable device is provided that converts laser light into a light source such as a flashlight or other illumination source. A converter is provided that uses the rear of a phosphor to illuminate the output of the converter coaxially with the path of the illumination beam. The dichroic mirror is selected to have a low reflectivity at the illumination wavelength (445nm) and a high reflectivity at wavelengths longer than the wavelength of the illumination source. The dichroic reflective coating can be on the same side as the phosphor or can be on the opposite side of the phosphor.
Description
Background technology
Laser designator or laser pen are a kind of small and exquisite portable sets, it has the laser instrument of the very narrow low-power coherent beam of power supply (normally battery) and transmitting visible ray, and it is intended to for giving prominence to this things by illuminating interested things with the little luminous point of colourama.More high-power form is intended to the purposes for experiment or original equipment manufacturer (OEM).
General public can obtain more high-power laser instrument conventionally now.The low price of 1W445nm laser instrument and 0.5W405nm laser instrument makes them very popular at present.445nm blue light and particularly 405nm purple light laser instrument have human eye to its more insensitive wavelength.Laser beam on these wavelength has the low-light level being aware, but has the power of harmfulness.
But the use of above-mentioned laser equipment is limited to the purposes of experiment or original equipment manufacturer (OEM), this is because their power level can cause potential safety hazard in the time that above-mentioned laser instrument is used as laser designator.Needed is a kind of device, and its purposes by above-mentioned laser instrument expands to outside experiment or OEM purposes, thereby other users of the enthusiast of laser instrument and this equipment can obtain other effectiveness from these laser equipments.In this field, what is also needed is a kind of device that is generated low-power illumination by that fix or portable laser beam generating apparatus, with saving power and the multiple use that laser equipment is provided, they can be used by different way, the integrated tool that for example can light a fire, in case of emergency to provide illumination and to signal.
Summary of the invention
In general, adopt following the present invention can realize aforementioned object and other objects:
On the one hand, the invention reside in the converter that one or more lasing light emitter light beams can be converted to the illumination light that is suitable for use as the light source that contributes to vision.
On the one hand, the invention reside in and one or more lasing light emitter light beams can be converted to the converter that is applicable to arenas or other recreational use or is used as the colourama of illumination.
On the other hand, the invention reside in the converter that man-pack laser unit can be converted to flashlight (flashlight).
Aspect another, the invention reside in the removable equipment alternatively that portable blue light or purple light laser instrument is converted to white light flashlight.
Aspect another, the invention reside in the removable equipment alternatively that portable blue light or purple light laser instrument is converted to colourama flashlight or light source.
Accompanying drawing summary
Fig. 1 is a kind of converter embodiment of the present invention;
Fig. 2 is a kind of converter embodiment of the present invention;
Fig. 3 is a kind of converter embodiment of the present invention;
Fig. 4 is the description of the effect of dichroic coating and fluorophor resin on laser beam;
Fig. 5 is a kind of converter embodiment of the present invention;
Fig. 6 is the description of the focus that formed by the laser beam focusing on;
Fig. 7 is the description of the laser beam of diffraction;
Fig. 8 is the description of a kind of converter embodiment of the present invention; And
Fig. 9 is the description of the function of a kind of converter embodiment of the present invention.
Detailed Description Of The Invention
Especially, the present invention is intended to the conversion of laser to versicolor light.In the time modifying according to the embodiment of the present invention, by means of converter, laser instrument can be converted into the light that can throw light on the white light that is suitable for watching in night or dark area and various colourama.This laser instrument being converted as portable flashlight or ordinary lamps (for example, bulb) equally useful, and the form of its colourama is also useful as ornamental fixing or portable light-emitting component in light show and can produce a series of colourama.
A principal character of the present invention is by means of material for transformation of wave length, for example, be installed to the fluorophor on Changer Device, presents white light and exports to produce efficient illumination by the input of some laser is converted to.This " white light " is partly made up of the light of original source laser, but has extraly other wavelength from light-emitting phosphor of wide spectrum.
Another feature of the present invention is that the mixing cause laser input by adopting different fluorophor or different fluorophor produces colourama.
Must, in portable laser flashlight after conversion of the present invention, have: (1) at least one lasing light emitter, (2) at least one reflector of laser beam, at least one output beam focusing arrangement of (3) at least one fluorophor and (4).Any lasing light emitter can be used in the present invention, but, preferably use blueness or violet laser source, and more preferably in the time producing white light, use blue 445nm laser instrument.
In embodiments of the present invention, laser beam is reflected on fluorophor.Suitable reflector comprises speculum, reflection mirror array or diffraction optical lens.Although describe several configurations here in detail, with reference now to preferred embodiment and Fig. 1 and 2.In a preferred embodiment, laser instrument is with coaxial for the converter that laser beam is converted to illumination light.This converter by exporting reflective optical system, there is glass substrate, fixture, heat-conductive bonding agent, material for transformation of wave length, 2-axle transmission diffraction grating, the module holder of top dichroic coating and transparent window composition.
In a preferred embodiment, light modular converter (Ref. No. 1 to 6 that Fig. 1 comprises) is arranged in converter shell 7, and the outer-diameter threads of converter shell 7 is preferably designed to be and is screwed in common available man-pack laser unit.Transparent window 8 stops entering of dust and dirt.
With reference now to output reflective optical system 1,, it is aluminium or the copper reflector of standard preferably, or is applied to the reflectance coating of the transducer face that receives light.More preferably, output reflective optical system 1 is internal silver plated.
Glass substrate 2 by dichroic coating coated with form dichroic mirror.Dichroic coating is for preventing the waste of the light reflecting.In order to produce its output converter coaxial with the path of illuminating bundle, preferred method is the backside-illumination that adopts fluorophor.Do like this, the light that conventionally exceedes 50% ejaculation will be wasted, because it is to penetrate from that illuminated side mostly.In order to recapture some in these light that are wasted, dichroic mirror is used as the substrate of fluorophor/resin.Preferably dichroic mirror is selected as at illumination wavelengths place (normally 445nm) and has low reflectivity, and has high reflectivity for the wavelength of being longer than illumination wavelengths.Dichroic coating can be positioned at a side identical with fluorophor or be positioned at a side relative with fluorophor.Exemplary dichroic coating comprises multilayer tantalum pentoxide and silica or multilayer titanium dioxide and silica.
The glass of dichroic coating is well-known in the art and can commercially obtains from multiple source.In order to form distinctive dichroic coating, multiple superthin layers of different metal (for example gold or silver); Such as titanium, chromium, aluminium, zirconium, or the oxide of these metals of magnesium; Or silicon in vacuum chamber by electron beam evaporation.Then, steam condenses with the form of crystalline texture at glass surface.Add sometimes the protective layer of quartz crystal.Other versions of this PVD (PVD) coating are also possible.Final glass can have the nearly this metal of 30 to 50 layers, but the thickness of whole coatings is approximately 30/1000000ths to 35 (approximately 760 to 890nm) of an inch.The coating producing is very similar to jewel, and by meticulously controlling thickness, can obtain different colors.The wavelength that all light that reach dichroic layer equal reflection adds the wavelength through dichroic layer.
Glass substrate 2 is also formed by heat conduction glass, the Schott Glass BK7 that heat conduction glass for example can obtain from being positioned at New York Elmes Ford's (Elmsford) Schott North America company.Preferably, glass substrate 2 is selected as having specific viscosity and is attached to its higher thermal conductivity of material for transformation of wave length 5.Alternatively, undoped yttrium-aluminium-garnet (YAG), sapphire or diamond can be used as substrate.
Fixture 3 keeps glass substrate 2 in place, and alternatively, heat-conductive bonding agent 4 forms the material that coheres between fixture 3 and glass substrate 2.With heat conducting clamp, substrate being pressed from both sides is the optimal way of cooled glass substrate 2 and the material that adheres to it (material as described herein) in place.Preferably, fixture 3 is by forming such as the Heat Conduction Material of copper or aluminium; But, can adopt any Heat Conduction Material well-known to those skilled in the art.Preferably, heat-conductive bonding agent 4 is thermal conductive silicon adhesives, the Chomerics CHO-THERM 1641 that for example can obtain from the Chomerics of branch company of Parker Hannifin company (www.chomerics.com).Alternatively, or in addition, utilize the radiator adopting in electronic equipment traditionally can realize heat cooling, wherein radiator is for example connected to fixture 3 or is directly connected to aluminium or the copper radiator of glass substrate 2.
With reference now to Fig. 4 and 1,, material for transformation of wave length 5 is the fluorophor resin compounds that can stick to glass substrate 2.With reference now to the fluorophor composition of material for transformation of wave length 5,, preferably, it is the fluorophor (yttrium-aluminium-garnet (Ce3+:YAG) of doped with cerium) based on YAG, and it is converted to laser beam to have the divergence of White LED bulb or flashlight and the white light beam of outward appearance from 445nm." white light " is partly made up of original 445nm blue light, but added other wavelength (spectrum Green is to red part) from the wide spectrum of the transmitting of fluorophor.Fluorophor absorption portion 445nm light the remaining light of scattering.Absorbed part is converted into the light of longer wavelength by the Stokes transition effects of fluorophor.Fluorophor can also be yellow oxynitrides fluorophor.About resin, it is the resin binder with the thermal conductivity lower than glass substrate 2, therefore needs to increase glass substrate 2 to absorb heat and heat is transported away from fluorophor.Preferably, resin binder is optically transparent epoxy resin or silicones, ACC Silicones QLE1102 or the ACC Silicones Qsi1222 that for example can obtain from being positioned at the ACCSilicones Co., Ltd of Britain's Bridgwater (Bridgewater).
Refer again to Fig. 4,2 axles (X and Y) transmission diffraction grating 6 is for further reducing the local heat that material for transformation of wave length 5 comprises resin.The near field output of common available 1W445nm man-pack laser unit forms by having the vitta that is included in the most of power in 2mm × 0.75mm region.With this power density, it is overheated that the resin that comprises fluorophor is easy to, and causes variable color or carbonization (focus).In order to prevent focus, can send illuminating bundle before glass substrate 2 and increase the effective lighting district of fluorophor by 2 axles (X and Y) diffraction grating or other dispersing apparatus by means of hitting at illuminating bundle.Compare with there is no 2 axle diffraction grating (in Fig. 6), described lasing light emitter through exemplary strike (striking) pattern after 2 axle diffraction grating according to Fig. 7 of embodiment of the present invention.By emissive lighting light beam, by diffraction grating, laser illuminator power is spread out on larger phosphor area, has prevented emerging of " focus ".In Fig. 7, source beam is divided into 5 output beams of taking advantage of 5 arrays by grating.Due to the oval-shaped shape of stripes of input light beam, output beam is overlapping on y axle.If grating rotating 45 is spent, luminous point will be overlapping in X-axis and Y-axis, but this is not strictly to need for producing output uniformly, and this is the diffusing characteristic diffuser due to fluorophor resin compound.Preferably, dispersing apparatus is concavees lens or biconcave lens, transmission diffraction grating or transmission hologram element.
Module holder 7, is also referred to as converter shell, for holding assembly 1-6 and 8, and allows, by means of threaded screw as shown in Figure 1, lasing light emitter, for example man-pack laser unit are installed.Should be appreciated that and can lasing light emitter be connected on converter shell by means of any normally used device, these devices comprise clip, have accessory or the similar device of groove.Normally, this Changer Device will be used for 1W445nm man-pack laser unit, but the laser instrument of other watts or wavelength is also easily replaced for this converter.
Transparent plastic or glass window 8 are for stoping dust and dirt contact component 1-6.Further, transparent plastic or glass window 8 are for stoping user directly to contact with hot surface, and prevention user contact or exterior object contact intraware 1-6, and this contact may cause the damage of parts 1-6.
In another embodiment, with reference to figure 5, because the light output from material for transformation of wave length is lambert's light substantially, therefore focus on to reduce output beam angle better illumination as flashlight can be provided.This can realize by material for transformation of wave length being placed in bending reflector or by light is launched to enter in total internal reflection/refraction optical element, and described optical element is similar to those for collimating the optical element of great power LED.
The operation of embodiment of the present invention is described with reference to Fig. 1 and 2 now especially.The 2 axle diffraction grating (6) that are transmitted from the collimated light beam (9) in portable laser source disperse and are divided into multiple illuminating bundles (10).The light beam disperseing is hitting a slice material for transformation of wave length (5) before through glass dichroic mirror (2).Material for transformation of wave length is converted to some illumination light the light of longer wavelength, and it generates the output (11) of different colours with being combined from the scattered light of illuminating bundle.The heat being produced in material for transformation of wave length by wavelength-conversion process is removed from glass substrate by fixture (3) and heat adhesive (4).Light output from material for transformation of wave length is lambert's light substantially, until it is focused to narrower light beam by reflector (1).Outside shell (7) has screw thread to allow to be connected to common man-pack laser unit in outside.Transparent window (8) stops dust and dirt to pollute reflector and material for transformation of wave length.
Alternatively, other devices that focus the laser beam on the fluorophor that comprises substrate are also possible.Be positioned at that wavelength conversion fluorescence body at a distance can be thrown light on by front portion or by backside-illumination.The light that majority is converted is from launching with the light phase the same side for throwing light on, and therefore the mode of anterior illumination is the most efficient.In addition, from the angle of heat, the mode of anterior illumination, by allowing fluorophor and resin-bonded agent to be deposited on heat conduction and reflective metal substrate, therefore contributes to cooling fluorophor/resin compound and the reflection light forward from the trailing flank transmitting of fluorophor.Like this, can be in the converter focusing on as shown in Figure 8 by beam arrangement.For example, illuminating bundle (or multiple light beam) shooting is also then designed to same use by fluorophor speculum, reflection mirror array or diffraction optical element retroeflection are towards described fluorophor.Light beam is sent to the alignment issues that can cause speculum/multiple speculums by fluorophor.This configuration is removed output and original beam at angle or from original beam.
In another embodiment, reflector can be used to reflect light on reflector as described in Figure 9.Therefore, by hanging metal speculum and by means of radiator described here and that be for example connected to speculum rear surface, heat is removed from it, realizing will be from the light of same side transmitting as illumination.Still further, as shown in Figure 3, the transparency carrier of installing with the cooling fluorophor of conductive structure, realizes and adopts transparency carrier and utilize from the light of the both sides transmitting of fluorophor.For example, produce heat conduction and installation function and fill reflector whole internal diameter thin slice also by substrate preferably diamond wafer realize.
Will be appreciated that this equipment can comprise multiple laser instruments and converter, or can laser beam be divided into multiple light beams in order to input multiple converters.
Claims (19)
1. a removable phosphorescent or fluorescence wavelength converting equipment, described wavelength converting equipment is for changing handheld portable lasing light emitter in fact incoherent light source, described incoherent light source has the wavelength different from original laser or extra wavelength, and described wavelength converting equipment comprises:
(a) converter shell;
(b) handheld portable lasing light emitter; And
(c) material for transformation of wave length, it further comprises the fluorophor that adheres to substrate.
2. equipment as claimed in claim 1, wherein said substrate is dichroic mirror.
3. equipment as claimed in claim 1, it further comprises output focalizer.
4. equipment as claimed in claim 1, wherein said equipment produces white light source.
5. equipment as claimed in claim 1, wherein said equipment produces color light source.
6. equipment as claimed in claim 1, wherein said fluorophor is the YAG fluorophor of doped with cerium.
7. equipment as claimed in claim 1, wherein said fluorophor is yellow oxynitrides fluorophor.
8. equipment as claimed in claim 1, wherein said fluorophor is adhered to described substrate by silicones.
9. first equipment as claimed in claim 1, wherein pass dispersing apparatus to reduce the illumination power density on described material for transformation of wave length from the light of described lasing light emitter.
10. equipment as claimed in claim 9 is wherein selected described dispersing apparatus: concavees lens or biconcave lens, transmission diffraction grating or transmission hologram element from the group being made up of following equipment.
11. equipment as claimed in claim 1, wherein said output focalizer is solid metal reflector.
12. equipment as claimed in claim 1, wherein said output focalizer is total internal reflection refraction optical element.
13. equipment as claimed in claim 1, wherein said substrate is connected to radiator.
14. equipment as claimed in claim 1, wherein said substrate is transparent.
15. equipment as claimed in claim 1, wherein said substrate is the speculum towards lasing light emitter.
16. equipment as claimed in claim 1, wherein said lasing light emitter is coaxial with described converter shell.
17. 1 kinds of phosphorescents or fluorescence wavelength converting equipment, described wavelength converting equipment is for changing lasing light emitter in fact incoherent light source, and described incoherent light source has the wavelength different from original laser or extra wavelength, and described wavelength converting equipment comprises:
(a) converter shell;
(b) output focalizer;
(c) speculum; And
(d) material for transformation of wave length, it further comprises the fluorophor that adheres to substrate.
18. equipment as claimed in claim 17, the angle of wherein said speculum is by material for transformation of wave length described in described laser beam directive.
19. 1 kinds of phosphorescents or fluorescence wavelength converting equipment, described wavelength converting equipment is for changing lasing light emitter in fact incoherent light source, and described incoherent light source has the wavelength different from original laser or extra wavelength, and described wavelength converting equipment comprises:
(a) converter shell;
(b) output focalizer; And
(d) material for transformation of wave length, it further comprises the fluorophor that adheres to substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310167884.5A CN104141923A (en) | 2013-05-09 | 2013-05-09 | Converter for converting a laser device into a lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310167884.5A CN104141923A (en) | 2013-05-09 | 2013-05-09 | Converter for converting a laser device into a lighting device |
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| Publication Number | Publication Date |
|---|---|
| CN104141923A true CN104141923A (en) | 2014-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310167884.5A Pending CN104141923A (en) | 2013-05-09 | 2013-05-09 | Converter for converting a laser device into a lighting device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104566231A (en) * | 2014-12-24 | 2015-04-29 | 杨毅 | Wavelength conversion device and light-emitting device |
| CN106527025A (en) * | 2015-09-10 | 2017-03-22 | 杨毅 | Light emitting device, lamp and projection display device |
| CN106931338A (en) * | 2016-12-14 | 2017-07-07 | 江西科技师范大学 | A kind of laser flashlight |
| CN107143824A (en) * | 2017-02-27 | 2017-09-08 | 漳州立达信光电子科技有限公司 | A kind of lamp outer casing coating structure and coating process |
| CN108345161A (en) * | 2017-01-22 | 2018-07-31 | 深圳市光峰光电技术有限公司 | A kind of light conversion element, light-source system and display device |
| CN110050224A (en) * | 2016-12-16 | 2019-07-23 | 亮锐控股有限公司 | Light-switching device with angle and wavelength selectivity coating |
| WO2020248344A1 (en) * | 2019-06-13 | 2020-12-17 | 广州光联电子科技有限公司 | Optical system for folded multi-optical-axis laser torch, and laser torch |
| CN112628621A (en) * | 2021-01-14 | 2021-04-09 | 苏州视奥光电科技有限公司 | Laser light source device |
| CN112628617A (en) * | 2021-01-14 | 2021-04-09 | 苏州视奥光电科技有限公司 | Refraction and reflection type laser light-emitting device |
| AU2019229371B2 (en) * | 2019-09-11 | 2022-12-08 | Redpath, James MR | A method and apparatus for a laser beam diffuser |
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| CN106527025A (en) * | 2015-09-10 | 2017-03-22 | 杨毅 | Light emitting device, lamp and projection display device |
| CN106931338A (en) * | 2016-12-14 | 2017-07-07 | 江西科技师范大学 | A kind of laser flashlight |
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| CN108345161B (en) * | 2017-01-22 | 2021-02-26 | 深圳光峰科技股份有限公司 | Light conversion element, light source system and display device |
| CN108345161A (en) * | 2017-01-22 | 2018-07-31 | 深圳市光峰光电技术有限公司 | A kind of light conversion element, light-source system and display device |
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| CN111999973B (en) * | 2017-01-22 | 2022-04-26 | 深圳光峰科技股份有限公司 | Light conversion element, light source system and display device |
| CN107143824A (en) * | 2017-02-27 | 2017-09-08 | 漳州立达信光电子科技有限公司 | A kind of lamp outer casing coating structure and coating process |
| WO2020248344A1 (en) * | 2019-06-13 | 2020-12-17 | 广州光联电子科技有限公司 | Optical system for folded multi-optical-axis laser torch, and laser torch |
| AU2019229371B2 (en) * | 2019-09-11 | 2022-12-08 | Redpath, James MR | A method and apparatus for a laser beam diffuser |
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