CN205138642U - Light source with broadband spectrum - Google Patents
Light source with broadband spectrum Download PDFInfo
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- CN205138642U CN205138642U CN201520834344.2U CN201520834344U CN205138642U CN 205138642 U CN205138642 U CN 205138642U CN 201520834344 U CN201520834344 U CN 201520834344U CN 205138642 U CN205138642 U CN 205138642U
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Abstract
The utility model is suitable for a material analysis light source technical field provides a light source with broadband spectrum, the utility model discloses leading to visible spectrum that the light filter contains peak register for easy reference line with the deuterium lamp with the shortwave and straining and obtain mild UV spectrum, the visible light is partial in with a tungsten lamp spectrum weakens with visible decay light filter, with the long wave pass filter with the 2nd tungsten lamp's ultraviolet and visible light strain near infrared spectroscopy. Again with the mild ultraviolet ray of deuterium lamp production and ultraviolet ray, visible light and the near infrared of tungsten lamp spectrum production to and the near infrared spectroscopy that produces of the 2nd tungsten lamp through close the light device merge can the broadband spectroscopic light source that almost doubles of mild broadband and near infrared intensity. When the spectrum appearance of regarding as the detector with CCD or CMOS with the cooperation of this broadband spectroscopic light source carries out spectral measurement, can obtain than higher SNR in near infrared department, when increasing whole light source intensity, not lightlike spectrometer saturation as to this of visible light part in very big dynamic.
Description
Technical field
The utility model relates to a kind of light source for material analysis, relates to a kind of light source with broadband spectral design feature for spectral analysis and measurement in particular.
Background technology
At present, the wideband light source that market polishing wax analysis is commonly used is deuterium tungsten lamp, does the use of spectral analysis measurement even utilize reflection configuration or utilize transmittance structure to be grouped together by the light that deuterium lamp and tungsten lamp send.(do not do absolute spectral intensity to demarcate) shown in the spectrogram 1 of tungsten lamp and deuterium lamp, 101 is tungsten lamp spectrum, and 102 is deuterium lamp spectrum, and 103 is deuterium lamp spike spectrum 656.1nm.In Fig. 1, spectrum take CCD as the spectrometer measurement gained of detector.Visible ray peak value wherein in tungsten lamp spectrum 101 is between 571nm to 637nm.When coordinating this type of spectrometer to carry out spectral measurement with this kind of tungsten lamp, as needs increase integrated light source intensity (comprising ultraviolet light, visible ray and near infrared light) to increase near infrared light time, when visible light part strong to a certain extent time can produce saturated to this type of spectrometer; The now detector of spectrometer just cisco unity malfunction.
For simplicity's sake, only illustrate using the deuterium tungsten lamp with transmittance structure as an example, as shown in Figure 2.Its design is that the light lens 202 sent by halogen tungsten lamp 201 focus on and obtain broadband spectral 204 (a kind of deuterium tungsten lamp wideband light source-AvaLight-DH-S etc. as produced by Dutch Avantes company) by the actinic light sent with deuterium lamp after the smallcolumn diaphragm in deuterium lamp 203 bulb.Just being known by spectrum in Fig. 1, there are two intrinsic problems in this type of deuterium tungsten lamp: one is that deuterium lamp spectrum (ultraviolet light is to visible ray) has part spike spectrum (as 656.1nm etc.) and easily makes the detector of spectrometer saturated; The detector cisco unity malfunction of spectrometer when saturated.Although, company is had to adopt dichroic beam splitter to filter most of 656.1nm spike spectrum to avoid saturation problem (a kind of deuterium tungsten lamp wideband light source-AvaLight-DH-S-BAL etc. as produced by Dutch Avantes company), but can cost be increased comparatively speaking, because dichroic beam splitter will be made by coating process.Two is because CCD or CMOS spectral responsivity is very low near infrared light spectral coverage, so for using CCD or CMOS as the spectrometer of detector, the signal to noise ratio (S/N ratio) of corresponding near infrared light spectral coverage is little and be unfavorable for that spectral analysis is measured.Although high power tungsten lamp can be used to increase near infrared light intensity, but this can bring new problem as increased power dissipation and produce more heats etc., and when increasing near infrared light, visible light part also can increase, when visible light part strong to a certain extent time can produce saturated to this type of spectrometer; The now detector of spectrometer just cisco unity malfunction.
In summary, obviously there is inconvenience and defect in actual use in prior art, so be necessary to be improved.
Summary of the invention
For above-mentioned defect, the purpose of this utility model is to provide a kind of light source with broadband spectral, this light source has the broadband spectral that mild broadband and near infrared light almost double, comprise ultraviolet light, visible ray and near infrared light, deuterium lamp spectrum in broadband spectral can be solved excessive and easily make the saturation problem of the spectrometer using CCD or CMOS as detector relative to ultraviolet light, near infrared light intensity just like 656.1nm spike spectrum and visible ray, the problem that in broadband spectral, near infrared light signal to noise ratio (S/N ratio) is low can be solved simultaneously.
To achieve these goals, the utility model provides a kind of light source with broadband spectral, comprise: the first light source, short wave pass filter, secondary light source, visible attenuating filters, the 3rd light source, long wave pass filter and Multiplexing apparatus, described Multiplexing apparatus comprises three light input interfaces and a light output interface, wherein the first light source is ultraviolet source, secondary light source is the light source comprising ultraviolet light, visible ray and near infrared light, 3rd light source is the light source or the near infrared light light source that comprise ultraviolet light, visible ray and near infrared light
The light that described first light source sends obtains mild ultraviolet light after described short wave pass filter, and described mild ultraviolet light is coupled into first light input interface of described Multiplexing apparatus;
The light that described secondary light source produces obtains the light that visible light part is attenuated after described visible attenuating filters, and the optically-coupled that described visible light part is attenuated enters second light input interface of described Multiplexing apparatus;
The light that described 3rd light source produces obtains near infrared light after described long wave pass filter, and described near infrared light is coupled into the 3rd light input interface of described Multiplexing apparatus;
Described Multiplexing apparatus exports through described light output interface the mild broadband spectral comprising ultraviolet light, visible ray and near infrared light after the light entered by described three light input interfaces being carried out close light.
According to light source of the present utility model, described Multiplexing apparatus comprises first two-in-one y-type optical fiber and second two-in-one y-type optical fiber,
The light that described first light source sends is coupled into one of them input adapter of described first two-in-one y-type optical fiber after described short wave pass filter, and the light that described secondary light source produces is coupled into another input adapter of described first two-in-one y-type optical fiber after described visible attenuating filters;
The out splice going splice of described first two-in-one y-type optical fiber connects one of them input adapter of described second two-in-one y-type optical fiber, and the light that described 3rd light source produces is coupled into another input adapter of described second two-in-one y-type optical fiber after described long wave pass filter;
The out splice going splice of described second two-in-one y-type optical fiber exports the mild broadband spectral comprising ultraviolet light, visible ray and near infrared light.
According to light source of the present utility model, described Multiplexing apparatus comprises three-in-one optical fiber, and three-in-one optical fiber comprises three light input adapters and a light output joint,
The light that described first light source sends is coupled into first light input adapter of described three-in-one optical fiber after described short wave pass filter, the light that described secondary light source produces is coupled into second light input adapter of described three-in-one optical fiber after described visible attenuating filters, and the light that described 3rd light source produces is coupled into the 3rd light input adapter of described three-in-one optical fiber after described long wave pass filter;
The light output joint of described three-in-one optical fiber exports the mild broadband spectral comprising ultraviolet light, visible ray and near infrared light.
According to light source of the present utility model, adopt the method that multiple coupled, the visible ray of near infrared light and ultraviolet light are coupled less, the optical fiber that namely the 3rd light source is used adopts the optical fiber of larger core diameter to balance the light intensity of each several part.
According to light source of the present utility model, described optical fiber is bifurcated or compartition formula.
According to light source of the present utility model, described light and inputing or outputing of fibre-optical splice are coupled as direct-coupling or use Lens Coupling.
According to light source of the present utility model, described Multiplexing apparatus comprises the first conjunction mating plate, second and closes mating plate, the first catoptron and the second catoptron,
The light that described first light source sends arrives described second through described first catoptron reflection and closes mating plate after described short wave pass filter;
The light that described secondary light source produces enters the first conjunction mating plate after described visible attenuating filters, the light that described 3rd light source produces enters described first through described second catoptron reflection and closes mating plate after described long wave pass filter, exports described second to and close mating plate after the light that described secondary light source and the 3rd light source produce is carried out conjunction light by described first conjunction mating plate;
The mild broadband spectral comprising ultraviolet light, visible ray and near infrared light is exported after the actinic light that the light exported by described first conjunction mating plate and described first light source produce by described second conjunction mating plate.
According to light source of the present utility model, the output intensity of described secondary light source and described 3rd light source regulates by regulating its drive current.
According to light source of the present utility model, the light output interface of described first light source, secondary light source and the 3rd light source is also provided with the neutral optical attenuation sheet for balancing light intensity.
According to light source of the present utility model, described first light source is deuterium lamp, hydrogen lamp or xenon lamp, and described secondary light source is tungsten lamp or xenon lamp, and described 3rd light source is tungsten lamp or xenon lamp.One of the technical problems to be solved in the utility model has for deuterium lamp spectrum (ultraviolet light is to visible ray) in broadband spectral light source the spike being positioned at visible ray, the problem that the detector of spectrometer is saturated is easily made as 656.1nm, and the design proposal filtering its visible ray proposed.
For solving the problems of the technologies described above, the design blocking spike spectra part that the utility model proposes, namely with short wave pass filter the visible ray comprising 656.1nm spike of ultraviolet source filtered and obtain mild ultraviolet spectrum, the ultraviolet light, visible ray and the near infrared light that again this mild ultraviolet light and secondary light source spectrum are produced, and the 3rd the near infrared spectrum that produces of light source merge to obtain the broadband spectral that almost doubles of mild broadband and near infrared light, comprise ultraviolet light, visible ray and near infrared light.
Two of the technical problems to be solved in the utility model is for using CCD or CMOS as the spectrometer of detector, in broadband spectral light source visible ray relative to ultraviolet light, near infrared light intensity is excessive and the design proposal with attenuating filters decay visible ray that easily makes the saturated problem of the spectrometer using CCD or CMOS as detector and propose.
For solving the problems of the technologies described above, secondary light source spectrum medium ultraviolet light and visible light part reduce with the relative intensity balancing itself and ultraviolet light and near infrared light by the visible attenuating filters of the use that the utility model proposes.When increasing integrated light source intensity and comprising ultraviolet light, visible ray and near infrared light, visible light part can not to saturated as the spectrometer of detector using CCD or CMOS.
Three of the technical problems to be solved in the utility model is for using CCD or CMOS as the spectrometer of detector, and INFRARED SPECTRUM responsiveness is low, and corresponding signal to noise ratio (S/N ratio) is little is unfavorable for the problem that spectral analysis is measured and two tungsten lamp near infrared lights superposition design proposals of proposing.
For solving the problems of the technologies described above, the near infrared light superposition design of the employing secondary light source that the utility model proposes and the 3rd light source improves its signal to noise ratio (S/N ratio) to strengthen near-infrared spectra part, namely with long wave pass filter, the ultraviolet light of the 3rd light source and visible ray is filtered to obtain near infrared spectrum.Ultraviolet light, visible ray and near infrared light that the mild ultraviolet light produced by first light source again and secondary light source produce, and the 3rd the near infrared actinic light that produces of light source the broadband spectral that almost doubles of mild broadband and near infrared light, comprise ultraviolet light, visible ray and near infrared light.
Overall technology effect of the present utility model embodies in the following areas.
(1) in the utility model, one of the technical problems to be solved in the utility model is the design proposal filtering visible ray in deuterium lamp spectrum easily making the saturated problem of the spectrometer using CCD or CMOS as detector for deuterium lamp spectrum in broadband spectral just like 656.1nm spike spectrum and propose.
(2) in the utility model, two of the technical problems to be solved in the utility model is for using CCD or CMOS as the spectrometer of detector, in broadband spectral visible ray relative to ultraviolet light, near infrared light intensity is excessive and the design proposal with attenuating filters decay visible ray that easily makes the saturated problem of the spectrometer using CCD or CMOS as detector and propose.
(3) in the utility model, three of the technical problems to be solved in the utility model is design proposals of the near infrared light superposition of secondary light source and the 3rd light source proposed for the low problem of near infrared light signal to noise ratio (S/N ratio) in the spectrometer broadband spectral using CCD or CMOS as detector.
Accompanying drawing explanation
Fig. 1 is conventional tungsten lamp and deuterium lamp spectrum;
Fig. 2 is a kind of schematic diagram of common deuterium tungsten light source in prior art;
Fig. 3 is the theory structure schematic diagram of the first embodiment of the present utility model;
Fig. 4 is broadband spectral of the present utility model;
Fig. 5 is the sample transmitance recorded with the utility model;
Fig. 6 is the theory structure schematic diagram of the second embodiment of the present utility model;
Fig. 7 is the theory structure schematic diagram of the 3rd embodiment of the present utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Ultimate principle of the present utility model is: the light source with broadband spectral comprises the first light source, short wave pass filter, secondary light source, visible attenuating filters, 3rd light source, long wave pass filter and Multiplexing apparatus, Multiplexing apparatus comprises three light input interfaces and a light output interface, wherein the first light source is ultraviolet source, secondary light source is for comprising ultraviolet light, the light source of visible ray and near infrared light, 3rd light source is for comprising ultraviolet light, the light source of visible ray and near infrared light or near infrared light light source, the light that first light source sends obtains mild ultraviolet light after short wave pass filter, mild ultraviolet light is coupled into first light input interface of Multiplexing apparatus, the light that described secondary light source produces obtains the light that visible light part is attenuated after visible attenuating filters, and the optically-coupled that visible light part is attenuated enters second light input interface of Multiplexing apparatus, the light that 3rd light source produces obtains near infrared light after long wave pass filter, and near infrared light is coupled into the 3rd light input interface of Multiplexing apparatus, Multiplexing apparatus exports through light output interface the mild broadband spectral comprising ultraviolet light, visible ray and near infrared light after the light entered by three light input interfaces being carried out close light.
The utility model utilizes three spectrum unifications, and the method for namely carrying out deglitch spectrum respectively to three spectrum, stabilize visible ray and closing light after intercepting near infrared light process again obtains and comprises ultraviolet light, visible ray to the broadband spectral of near infrared light.Visible spectrum containing spike spectral line in first light source filters and obtains mild ultraviolet spectrum by the utility model short wave pass filter, with visible attenuating filters, visible light part in secondary light source spectrum is weakened, with long wave pass filter, the Uv and visible light of the 3rd light source is filtered to obtain near infrared spectrum, the light then mild ultraviolet spectrum obtained, visible light part are attenuated and near infrared actinic light the broadband spectral that almost doubles of mild broadband and near infrared light.When coordinating the spectrometer using CCD or CMOS as detector to carry out spectral measurement with this broadband spectral, higher signal to noise ratio (S/N ratio) can be obtained near infrared light place; In addition, when increasing integrated light source intensity and comprising the intensity of ultraviolet light, visible ray and near infrared light, in very large dynamic range, visible light part can not be saturated to this type of spectrometer.Adopt the wideband light source of the utility model design economical and practical, material analysis and measurement can be widely used in, convenient and practical.
Due in actual applications, usually adopt deuterium lamp to use as ultraviolet source, tungsten lamp is used as the light source and near infrared light light source comprising ultraviolet light, visible ray and near infrared light.Therefore, in the examples below, the utility model adopts deuterium lamp as the first light source, the first tungsten lamp as secondary light source, and the second tungsten lamp is as the 3rd light source.In fact the first light source also can adopt other ultraviolet sources, such as xenon lamp etc.; Secondary light source also can adopt other to comprise the light source of ultraviolet light, visible ray and near infrared light, such as xenon lamp etc.; 3rd light source also can adopt other near infrared light light sources or comprise the light source of ultraviolet light, visible ray and near infrared light, such as xenon lamp etc.Deuterium lamp in following examples, tungsten lamp be not as the use of restriction the utility model.
Embodiment one
As shown in Figure 3, the light source in the present embodiment with broadband spectral comprises deuterium lamp 301, short wave pass filter 302, first tungsten lamp 304, visible attenuating filters 305, second tungsten lamp 307, long wave pass filter 308 and Multiplexing apparatus, Multiplexing apparatus comprises first two-in-one y-type optical fiber and second two-in-one y-type optical fiber, first two-in-one y-type optical fiber comprises two optical fiber input adapters, 303,306 and optical fiber out splice going splice, 310, second two-in-one y-type optical fiber and comprises two optical fiber input adapters 309,311 and optical fiber out splice going splice 312.First two-in-one y-type optical fiber and second two-in-one y-type optical fiber are bifurcated or compartition formula.
The light that deuterium lamp 301 sends is after short wave pass filter 302, the visible ray comprising 656.1nm spike spectrum in deuterium lamp spectrum is filtered obtains mild ultraviolet spectrum, this ultraviolet spectrum first optical fiber input adapter 303 in first two-in-one y-type optical fiber is coupled into optical fiber, then enters first two-in-one y-type optical fiber out splice going splice 310.The light that first tungsten lamp 304 sends is after visible attenuating filters 305, and its visible light part is attenuated to balance the relative intensity of ultraviolet light that itself and the first tungsten lamp 304 send and near infrared light; When increasing integrated light source intensity and comprising the intensity of ultraviolet light, visible ray and near infrared light, this visible light part can not to saturated as the spectrometer of detector using CCD or CMOS; The visible ray of this decay and ultraviolet light and near infrared light second optical fiber input adapter 306 in first two-in-one y-type optical fiber are coupled into optical fiber, and are transferred to first two-in-one y-type optical fiber out splice going splice 310.So just can obtain at first two-in-one y-type optical fiber out splice going splice 310 broadband spectral comprising ultraviolet light, visible ray and near infrared light, and this broadband spectral first fibre-optical splice 311 in second two-in-one y-type optical fiber is coupled into optical fiber, then is transferred to second two-in-one y-type optical fiber out splice going splice 312.
In addition, the light that second tungsten lamp 307 the same with the first tungsten lamp 304 performance sends is after long wave pass filter 308, wherein ultraviolet light and visible ray are obtained near infrared light by filtering, this near infrared light second fibre-optical splice 309 in second two-in-one y-type optical fiber is coupled into optical fiber, then is transferred to second two-in-one y-type optical fiber out splice going splice 312.So, the mild broadband spectral comprising ultraviolet light, visible low beam and infrared light of two tungsten lamp near infrared light superposition just can be obtained at second two-in-one y-type optical fiber out splice going splice 312.When coordinating the spectrometer using CCD or CMOS as detector to carry out spectral measurement with this broadband spectral, higher signal to noise ratio (S/N ratio) can be obtained near infrared light place; In addition, when increasing integrated light source intensity (comprising ultraviolet light, visible ray and near infrared light), in very large dynamic range, visible light part can not be saturated to this type of spectrometer.
In the present embodiment, light and inputing or outputing of fibre-optical splice are coupled as direct-coupling or use Lens Coupling.
As shown in Figure 4, be mild broadband (comprising ultraviolet light, visible ray and the near infrared light) spectrum (not doing absolute spectral intensity to demarcate) that near infrared light that the utility model obtains nearly doubles, its spectral range is about 350nm-1000nm; This spectrum records as the spectrometer of detector in order to CCD, and its spectral range depends primarily on the spectral response range of CCD.In fact spectral range of the present utility model is greater than above-mentioned scope, as can also be recorded the wider spectrum of this lamp with the spectrometer with more wide spectral range.Wherein 401 is ultraviolet spectrums, and 402 visible light and 403 are near infrared spectrums.Minimum intensity of light (at 998.00nm place gray-scale value 4810.83) in this broadband spectral can meet spectral measurement requirement, and its mxm. (at 559.60nm place gray-scale value 28220.01) also can not be saturated.In fact, for according to the difference (as material and core diameter etc.) of the wideband light source made by the utility model because of optical fiber used or the difference of coupling optical element used, the light distribution of gained broadband spectral each several part can be different, but all there is this broadband spectral of basic feature of the present utility model-namely when coordinating the spectrometer using CCD or CMOS as detector to carry out spectral measurement, higher signal to noise ratio (S/N ratio) can be obtained near infrared light place; And when increasing integrated light source (comprising ultraviolet light, visible ray and near infrared light) intensity, in very large dynamic range, visible light part can not be saturated to this type of spectrometer.
As shown in Figure 5, be a certain glass sample (QB2) transmitance recorded with the utility model.Wherein 501 is with only having the wideband light source of a deuterium lamp and a tungsten lamp combination (as the similar lamp often had in the market, the deuterium tungsten lamp wideband light source-AvaLight-DH-S of such as Dutch Avantes) this glass sample transmitance of recording, 502 is these glass sample transmitances recorded with the utility model; 503 is use the non-spectral signal and noise that only have the wideband light source of a deuterium lamp and a tungsten lamp combination to obtain near infrared light place.Obviously, good spectrum can be recorded near infrared light place in transmitance 502; Also namely the utility model, under the prerequisite that can realize broadband spectral equally, when coordinating the spectrometer using CCD or CMOS as detector to carry out spectral measurement, can obtain very high signal to noise ratio (S/N ratio) near infrared light place; And when increasing integrated light source intensity, in very large dynamic range, visible light part can not be saturated to this type of spectrometer.
Embodiment two
As shown in Figure 6, the light source with broadband spectral comprises deuterium lamp 601, short wave pass filter 602, first tungsten lamp 604, visible attenuating filters 605, second tungsten lamp 607, long wave pass filter 608 and the three-in-one optical fiber as Multiplexing apparatus, three-in-one optical fiber comprises first optical fiber input adapter, 603, second optical fiber input adapter the 606, three optical fiber input adapter 609 and light output joint 610.Three-in-one optical fiber is bifurcated or compartition formula.
The light that deuterium lamp 601 sends is after short wave pass filter 602, comprise 656.1nm spike spectrum some visible light in deuterium lamp spectrum to be filtered and obtain mild ultraviolet spectrum, this ultraviolet spectrum first fibre-optical splice 603 in three-in-one optical fiber is coupled into optical fiber, then transmission light out splice going splice 610.The light that first tungsten lamp 604 sends is after visible attenuating filters 605, and its visible light part is attenuated to balance the relative intensity of ultraviolet light that itself and the first tungsten lamp 604 send and near infrared light spectrum; To such an extent as to when increasing integrated light source intensity and comprising the intensity of ultraviolet light, visible ray and near infrared light, this visible light part can not to saturated as the spectrometer of detector using CCD or CMOS; Light second fibre-optical splice 606 in three-in-one optical fiber sent through the first tungsten lamp 604 of overdamping is coupled into optical fiber, then transmission light out splice going splice 610.The light that second tungsten lamp 607 sends is after long wave pass filter 608, and wherein ultraviolet light and visible ray are obtained near infrared light by filtering, and this near infrared light the 3rd fibre-optical splice 609 in three-in-one optical fiber is coupled into optical fiber, then transmission light out splice going splice 610.So, what just can obtain the superposition of two tungsten lamp near infrared light at light output joint 610 comprises the mild broadband spectral of ultraviolet light, visible ray and near infrared light.When coordinating the spectrometer using CCD or CMOS as detector to carry out spectral measurement with this spectrum, higher signal to noise ratio (S/N ratio) can be obtained near infrared light place; In addition, when increasing integrated light source intensity and comprising the intensity of ultraviolet light, visible ray and near infrared light, in very large dynamic range, visible light part can not be saturated to this type of spectrometer.
In the present embodiment, light and inputing or outputing of fibre-optical splice are coupled as direct-coupling or use Lens Coupling.
Embodiment three
As shown in Figure 7, the light source with broadband spectral comprises deuterium lamp 701, short wave pass filter 702, the first tungsten lamp 704, visible attenuating filters 705, second tungsten lamp 708, long wave pass filter 709 and Multiplexing apparatus, Multiplexing apparatus comprises: the first catoptron 703, second catoptron 710, first closes mating plate 706 (the elongated anti-mirror of shortwave), and second closes mating plate 707 (the short anti-mirror of long-pass).
The light that deuterium lamp 701 sends is after short wave pass filter 702, comprise 656.1nm spike spectrum visible ray in deuterium lamp spectrum to be filtered and obtain mild ultraviolet spectrum, this ultraviolet light closes output after mating plate (the anti-mirror of long-pass shortwave) 707 reflection through second again after the first catoptron 703 reflects.The light that first tungsten lamp 704 sends after visible attenuating filters 705, to balance the relative intensity of ultraviolet light that itself and the first tungsten lamp 704 send and near infrared light spectrum after its visible light part is attenuated; When increasing integrated light source intensity and comprising the intensity of ultraviolet light, visible ray and near infrared light, this visible light part can not to saturated as the spectrometer of detector using CCD or CMOS; Export after second closes mating plate (the anti-mirror of long-pass shortwave) 707 again after the visible ray of this decay and near infrared light close mating plate (the anti-mirror of short-pass long wave) 706 through first.The light that second tungsten lamp 708 sends is after long wave pass filter 709, and wherein ultraviolet light and visible ray are obtained near infrared light by filtering, and this near infrared light exports close mating plate (the anti-mirror of long-pass shortwave) 707 through second again after the second catoptron 710 reflects after.So, what just can obtain two tungsten lamp near infrared light superposition at the second conjunction mating plate 707 place comprises the mild broadband spectral of ultraviolet light, visible ray and near infrared light.When coordinating the spectrometer using CCD or CMOS as detector to carry out spectral measurement with this spectrum, higher signal to noise ratio (S/N ratio) can be obtained near infrared light place; In addition, when increasing integrated light source intensity and comprising the intensity of ultraviolet light, visible ray and near infrared light, in very large dynamic range, visible light part can not be saturated to this type of spectrometer.
In the utility model, the output intensity of the first tungsten lamp and the second tungsten lamp can regulate by regulating its drive current.
The light output interface of deuterium lamp, the first tungsten lamp and the second tungsten lamp can also be respectively arranged with the neutral optical attenuation sheet for balancing light intensity.
In the utility model, adopt near infrared light multiple coupled (as with comparatively large core fiber etc.), visible ray and ultraviolet light light to be coupled less the method for (as with less core optical fibers etc.), the optical fiber that namely the 3rd light source is used adopts the optical fiber of larger core diameter to balance the light intensity of each several part.Can overcome because CCD or the COMS defect that near infrared portion that is that cause is relatively weak the responsiveness near infrared light place is low.
First tungsten lamp can be other the light source comprising ultraviolet light, visible ray and near infrared light; Second tungsten lamp can be other near infrared light light source; And deuterium lamp can be other ultraviolet source.
Certainly; the utility model also can have other various embodiments; when not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the utility model, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the utility model.
Claims (10)
1. there is a light source for broadband spectral, it is characterized in that, comprising:
First light source, short wave pass filter, secondary light source, visible attenuating filters, the 3rd light source, long wave pass filter and Multiplexing apparatus, described Multiplexing apparatus comprises three light input interfaces and a light output interface, wherein the first light source is ultraviolet source, secondary light source is the light source comprising ultraviolet light, visible ray and near infrared light, 3rd light source is the light source or the near infrared light light source that comprise ultraviolet light, visible ray and near infrared light
The light that described first light source sends obtains mild ultraviolet light after described short wave pass filter, and described mild ultraviolet light is coupled into first light input interface of described Multiplexing apparatus;
The light that described secondary light source produces obtains the light that visible light part is attenuated after described visible attenuating filters, and the optically-coupled that described visible light part is attenuated enters second light input interface of described Multiplexing apparatus;
The light that described 3rd light source produces obtains near infrared light after described long wave pass filter, and described near infrared light is coupled into the 3rd light input interface of described Multiplexing apparatus;
Described Multiplexing apparatus exports through described light output interface the mild broadband spectral comprising ultraviolet light, visible ray and near infrared light after the light entered by described three light input interfaces being carried out close light.
2. light source according to claim 1, is characterized in that, described Multiplexing apparatus comprises first two-in-one y-type optical fiber and second two-in-one y-type optical fiber,
The light that described first light source sends is coupled into one of them input adapter of described first two-in-one y-type optical fiber after described short wave pass filter, and the light that described secondary light source produces is coupled into another input adapter of described first two-in-one y-type optical fiber after described visible attenuating filters;
The out splice going splice of described first two-in-one y-type optical fiber connects one of them input adapter of described second two-in-one y-type optical fiber, and the light that described 3rd light source produces is coupled into another input adapter of described second two-in-one y-type optical fiber after described long wave pass filter;
The out splice going splice of described second two-in-one y-type optical fiber exports the mild broadband spectral comprising ultraviolet light, visible ray and near infrared light.
3. light source according to claim 1, is characterized in that, described Multiplexing apparatus comprises three-in-one optical fiber, and three-in-one optical fiber comprises three light input adapters and a light output joint,
The light that described first light source sends is coupled into first light input adapter of described three-in-one optical fiber after described short wave pass filter, the light that described secondary light source produces is coupled into second light input adapter of described three-in-one optical fiber after described visible attenuating filters, and the light that described 3rd light source produces is coupled into the 3rd light input adapter of described three-in-one optical fiber after described long wave pass filter;
The light output joint of described three-in-one optical fiber exports the mild broadband spectral comprising ultraviolet light, visible ray and near infrared light.
4. the light source according to any one of claim 1-3, is characterized in that, adopts the method that multiple coupled, the visible ray of near infrared light and ultraviolet light light are coupled less, and the optical fiber that namely the 3rd light source is used adopts the optical fiber of larger core diameter to balance the light intensity of each several part.
5. the light source according to Claims 2 or 3, is characterized in that, described optical fiber is bifurcated or compartition formula.
6. the light source according to Claims 2 or 3, is characterized in that, described light and inputing or outputing of fibre-optical splice are coupled as direct-coupling or use Lens Coupling.
7. light source according to claim 1, is characterized in that, described Multiplexing apparatus comprises the first conjunction mating plate, second and closes mating plate, the first catoptron and the second catoptron,
The light that described first light source sends arrives described second through described first catoptron reflection and closes mating plate after described short wave pass filter;
The light that described secondary light source produces enters the first conjunction mating plate after described visible attenuating filters, the light that described 3rd light source produces enters described first through described second catoptron reflection and closes mating plate after described long wave pass filter, exports described second to and close mating plate after the light that described secondary light source and the 3rd light source produce is carried out conjunction light by described first conjunction mating plate;
The mild broadband spectral comprising ultraviolet light, visible ray and near infrared light is exported after the actinic light that the light exported by described first conjunction mating plate and described first light source produce by described second conjunction mating plate.
8. the light source according to claim 1 or 3 or 7, is characterized in that, the output intensity of described secondary light source and described 3rd light source regulates by regulating its drive current.
9. the light source according to claim 1 or 3 or 7, is characterized in that, the light output interface of described first light source, secondary light source and the 3rd light source is also provided with the neutral optical attenuation sheet for balancing light intensity.
10. the light source according to claim 1 or 3 or 7, it is characterized in that, described first light source is deuterium lamp, hydrogen lamp or xenon lamp, described secondary light source is tungsten lamp or xenon lamp, and the 3rd light source is tungsten lamp or xenon lamp.
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| CN201520834344.2U CN205138642U (en) | 2015-10-26 | 2015-10-26 | Light source with broadband spectrum |
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| CN201520834344.2U CN205138642U (en) | 2015-10-26 | 2015-10-26 | Light source with broadband spectrum |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222891A (en) * | 2015-10-26 | 2016-01-06 | 苑高强 | A kind of light source with broadband spectral |
| CN106840395A (en) * | 2017-01-16 | 2017-06-13 | 中国人民解放军国防科学技术大学 | For the near-infrared super continuous spectrums illuminator of active high light spectrum image-forming |
| WO2018059411A1 (en) * | 2016-09-30 | 2018-04-05 | 高利通科技（深圳）有限公司 | Broad spectrum light source |
| CN108765301A (en) * | 2018-03-27 | 2018-11-06 | 长春理工大学 | A kind of optical system and its distortion correction method and system |
-
2015
- 2015-10-26 CN CN201520834344.2U patent/CN205138642U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222891A (en) * | 2015-10-26 | 2016-01-06 | 苑高强 | A kind of light source with broadband spectral |
| WO2017071462A1 (en) * | 2015-10-26 | 2017-05-04 | 高利通科技（深圳）有限公司 | Light source with broadband spectrum |
| CN105222891B (en) * | 2015-10-26 | 2017-08-04 | 高利通科技（深圳）有限公司 | A kind of light source with broadband spectral |
| WO2018059411A1 (en) * | 2016-09-30 | 2018-04-05 | 高利通科技（深圳）有限公司 | Broad spectrum light source |
| CN106840395A (en) * | 2017-01-16 | 2017-06-13 | 中国人民解放军国防科学技术大学 | For the near-infrared super continuous spectrums illuminator of active high light spectrum image-forming |
| CN108765301A (en) * | 2018-03-27 | 2018-11-06 | 长春理工大学 | A kind of optical system and its distortion correction method and system |
| CN108765301B (en) * | 2018-03-27 | 2020-08-07 | 长春理工大学 | Optical system and distortion correction method and system thereof |
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