CN106338008A - Wide spectrum light source with adjustable wavelength - Google Patents
Wide spectrum light source with adjustable wavelength Download PDFInfo
- Publication number
- CN106338008A CN106338008A CN201610720579.8A CN201610720579A CN106338008A CN 106338008 A CN106338008 A CN 106338008A CN 201610720579 A CN201610720579 A CN 201610720579A CN 106338008 A CN106338008 A CN 106338008A
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- China
- Prior art keywords
- drive circuit
- control device
- led
- led array
- light source
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
-
- 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
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
- F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
-
- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/001—Arrangement of electric circuit elements in or on lighting devices the elements being electrical wires or cables
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Led Devices (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention provides a wide spectrum light source with the adjustable wavelength. The light source comprises a shell, a control device, a drive circuit, an LED array, a multipath interface and an optical element, wherein the control device, the drive circuit, the LED array, the multipath interface and the optical element are arranged in the shell; the control device sends out an adjusting signal of LED array adjusting to the drive circuit; the drive circuit is in double-direction connection with the control device and does the corresponding adjusting action; the LED array is in double-direction connection with the drive circuit and receives drive signals of the drive circuit so as to generate light rays of different light intensities and within the different spectral ranges; the optical element is mounted on a window and a light path of a lighting device and used for carrying out diffusing, collimating and filtering on emergent light rays; the light source is small and exquisite in size, the spectrum ranges can be overlapped, the array formed by multiple LEDs creates possibility for the wide spectrum light source, the work current duty ratio of each LED chip can be conveniently and independently adjusted, and the adjustable spectrum output can be achieved. The orientation of the optical axis of the LED array can be automatically adjusted, and high-efficiency sample irrigation and the high-precision spectrum are achieved.
Description
Technical field
The present invention relates to Lighting control field, the width of specially a kind of Wavelength tunable section automatically controlling output wavelength scope
Spectroscopic light source.
Background technology
Molecule sensor detecting light spectrum can radiate from sample, for the sample needing high-resolution spectrum, needs
The light source that wide spectrum wavelength can be sent is irradiated to sample, thus improving the light spectral range that molecule sensor is received
And intensity, improve the performance of molecule sensor.Traditional spectral illumination light source adopts one or more light source cooperation multigroup mostly
Filter plate is constituted, and huge structure and Spectral matching scope can not be made very wide, and spectral illumination device work(by being limited using light source
Can be single, response speed is slowly it is impossible to meet the higher demand of molecule sensor.
If designing a kind of broad spectrum light source of Wavelength tunable section, drawbacks described above, miniaturization, spectral region can be overcome
The array of the multiple led compositions being overlapped mutually creates possibility for broad spectrum light source.Led array and control device, drive circuit
Integration packaging, in a device inside, externally only draws many connecting lines, by external pin, on the one hand, can be easily single
Solely adjust the operating current dutycycle of each led chip, realize adjustable spectrum output；On the other hand, can be automatically
The optical axis direction of adjustment led array, realizes the high efficiency to sample irradiation and high accuracy spectrum.
Content of the invention
A kind of in view of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide the scalable of miniaturization, automatization
The light source of output wavelength, output spectrum wide ranges, can obtain higher precision the Wavelength tunable section of sample spectra wide spectrum
Light source.
For achieving the above object, technical solution of the present invention is as follows:
A kind of broad spectrum light source of Wavelength tunable section, including the control device of housing and enclosure interior, drive circuit,
Led array, multichannel interface, optical element:
Control device: the signal from ppu receiving is parsed, sends adjustment led battle array to drive circuit
The Regulate signal of the optical axis, light intensity or spectral region of row；
Drive circuit: be bi-directionally connected with control device, the Regulate signal that receiving control device sends, make corresponding adjustment
The action of the optical axis of led array, light intensity and spectral region；
Led array: be bi-directionally connected with drive circuit, the drive signal receiving drive circuit is to produce different light intensity and frequency
The light of spectral limit；
Multichannel interface: comprise ground lead, supply electrical lead, communication lead, feedback lead, feedback lead is used for connecting outside
Processor and drive circuit, are compared renewal to feedback data；Communication lead is used for connecting ppu and control device,
And communication signal is passed to control device；Power supply lead wire connects control device, drive circuit and led array respectively, for controlling
Device, drive circuit and led array provide power supply；Ground lead connects the housing of light source；
Optical element: be arranged on the window and opticpath of illuminator, for diffusion, collimation are carried out to emergent ray
And filtration.
It is preferred that, described control device is arranged in substrate, and control device is fixed on above substrate, described driving
Circuit is fixed on the top of control device, and led array is located at the top of drive circuit, and control device passes through the of its encapsulation side
One external interface and second external interface at top, connect ppu and drive circuit, control device and driving electricity respectively
Road is bi-directionally connected by the second external interface, and control device is received from outside communication signal by the first external interface.
It is preferred that, drive circuit comprises to export the constant-current driven module of corresponding led driving current and can adjust
The electric module of section led array, constant-current driven module includes some constant current source chips, the pwm control signal of constant current source chip
Connect the pwm outfan of control device, constant current source chip receives the adjustment signal of self-control device, makes corresponding action,
Output led driving current completes to adjust；Electric module comprises there is the electro-motor device supporting led array, and control device is even
Connect the controlling switch of electro-motor device, control device puts into the data after parsing in the depositor of electro-motor device, control
Electro-motor device processed completes the rotation under startup under rated condition, termination and a fixed angular speed, so that led array
Optical axis there is the inclination of certain angle, the optical axis of inclination makes optical axis converge in the position needing the object irradiating to be placed
Place.
It is preferred that, control device comprises control chip, and control chip selects single-chip microcomputer or fpga chip, controls
After chip parsing information, on the one hand pass through the second external interface so that the pwm control output end of control chip controls drive circuit
Constant-current driven module, complete the output of led spectrum is adjusted；On the other hand, the universal input outlet tube foot control of control chip
The electric module of drive circuit processed, completes the light axial adjustment of led array.
It is preferred that, each led driven circuit of described led array is independently powered and independently controlled,
Described led array array selects polylith different colours led bare chip to constitute, and each led has different peak wavelengths, led
Bare chip is connected with drive circuit by the second external interface, and the common-anode of led array is linked on the positive pole of power supply together, cloudy
Pole is connected respectively in the different output channels of drive circuit.
It is preferred that, the signal from ppu that control device receives includes measuring light time spectrum detection environment
Lower ambient strength information or the range information measuring sample and molecular recognition instrument under light time spectrum detection environment.
It is preferred that, drive circuit is bi-directionally connected with control device, and described drive circuit feeds back the correlation of led array
To control device, relevant information includes information: led array current size, led actual spectrum, the current duty cycle of multiple led
Information.
It is preferred that, described optical element comprises illuminating window, hermetyic window and/or diffusing globe and/or condenser, shines
Bright window is made up of the material being opaque to visible light but only infrared light thoroughly, and hermetyic window is located above illuminating window and seals illuminating window；Diffusing globe
Above led bare chip, diffuser surface indentation, in order to produce the primary light distribution of uniform youth to emergent ray；Optically focused
Device is a paraboloid condenser or collecting lenses, condenser be located at led bare chip above both sides, paraboloid condenser by
Polylith reflecting mirror is constituted, and reflecting mirror inner surface is gold-plated.
It is preferred that, drive circuit is bi-directionally connected by the second external interface with led array, and drive circuit controls
The size of led array output current dutycycle, drive circuit is sampled to actual output current, and analog current signal is converted
After digital signal, transmitted to ppu by the feedback lead of the first external interface, ppu is by feedback current
Duty cycle signals and output current duty cycle data are compared correction, extremely by the current duty cycle data transfer after correction finally
Drive circuit, completes a feedback compensation, through repeatedly continual feedback compensation, until actual current dutycycle reaches expection
Target.
It is preferred that, the externally connected processor of feedback lead of multichannel interface or external sensor, outside pass
Sensor is range sensor or light sensor.
The invention has the benefit that the light source volume of the present invention is compact, spectral region is overlapped mutually, multiple led compositions
Array create possibility for broad spectrum light source, led array and control device, drive circuit integration packaging are in a device
Portion, externally only draws many connecting lines, by external pin, on the one hand, easily can individually adjust each led chip
Operating current dutycycle, realizes adjustable spectrum output；On the other hand, the optical axis direction of led array can automatically be adjusted,
Realize to the high efficiency of sample irradiation and the high accuracy of spectrum.
Brief description
Fig. 1 is the structural representation of the broad spectrum light source of Wavelength tunable section of one embodiment of the invention.
Fig. 2 is the structural representation of the broad spectrum light source feedback network of the Wavelength tunable section of one embodiment of the invention.
1 is the first external interface, and 2 is the second external interface, and 3 is ppu, and 4 is drive circuit, and 5 is to control dress
Put, 6 is led array, 7 is led bare chip, 8 is condenser, 9 is illuminating window, 10 is substrate, 11 is hermetyic window, 12 is diffusion
Device.
Specific embodiment
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also be by addition different concrete realities
The mode of applying is carried out or applies, and the every details in this specification can also be based on different viewpoints and application, without departing from
Carry out various modifications and changes under the spirit of the present invention.
A kind of broad spectrum light source of Wavelength tunable section, including the control device of housing and enclosure interior, drive circuit,
Led array, multichannel interface, optical element:
Control device: the signal from ppu receiving is parsed, sends adjustment led battle array to drive circuit
The Regulate signal of the optical axis, light intensity or spectral region of row；
Drive circuit: be bi-directionally connected with control device, the Regulate signal that receiving control device sends, make corresponding adjustment
The action of the optical axis of led array, light intensity and spectral region；
Led array: be bi-directionally connected with drive circuit, the drive signal receiving drive circuit is to produce different light intensity and frequency
The light of spectral limit；
Multichannel interface: comprise ground lead, supply electrical lead, communication lead, feedback lead, feedback lead is used for connecting outside
Processor and drive circuit, are compared renewal to feedback data；Communication lead is used for connecting ppu and control device,
And communication signal is passed to control device；Power supply lead wire connects control device, drive circuit and led array respectively, for controlling
Device, drive circuit and led array provide power supply；Ground lead connects the housing of light source；
Optical element: be arranged on the window and opticpath of illuminator, for diffusion, collimation are carried out to emergent ray
And filtration.
As shown in figure 1, described control device is installed on the substrate 10, control device 5 is fixed on above substrate 10, described drive
Galvanic electricity road 4 is fixed on the top of control device 5, and led array 6 is located at the top of drive circuit 4, and control device 5 is encapsulated by it
First external interface 1 of side and second external interface 2 at top, connect ppu 3 and drive circuit 4 respectively, control
Device 5 is bi-directionally connected by the second external interface 2 with drive circuit 4, and control device 5 passes through the first external interface 1 and receives arrival
From outside communication signal.The current duty cycle information of multiple led is contained in communication signal.
The shape of substrate 10 can be circular, rectangle and polygonal shape.Substrate 10 material can be rigid substrate
Can be flexible substrates.Substrate 10 plays a supportive role to whole device；Substantial amounts of heat, base can be produced because led array 6 lights
Bottom 10 needs from the material with Thermal conductivity.
Drive circuit 4 comprises to export the constant-current driven module of corresponding led driving current and can adjust led array 6
Electric module, constant-current driven module includes some constant current source chips, and the pwm control signal of constant current source chip connects control device
Pwm outfan, constant current source chip receives the adjustment signal of self-control device 5, makes corresponding action, and output led drives
Electric current completes to adjust；Electric module comprises there is the electro-motor device supporting led array 6, and control device 5 connects electro-motor
The controlling switch of device, control device 5 puts into the data after parsing in the depositor of electro-motor device, controls electro-motor
Device completes the rotation under startup under rated condition, termination and a fixed angular speed, so that the optical axis of led array 6 is sent out
The inclination of raw certain angle, the optical axis of inclination makes optical axis converge in be needed at the position that the object irradiating placed.
Control device 5 comprises control chip, electric capacity, resistance and other related elements, control chip select single-chip microcomputer or
Person's fpga chip, after control chip parsing contains the communication signal of current duty cycle information of multiple led, on the one hand passes through the
Two external interfaces 2, so that the pwm control output end of control chip controls the constant-current driven module of drive circuit 4, complete to led
The output of spectrum is adjusted；On the other hand, the universal input output pin of control chip controls the electric module of drive circuit, completes
The light axial adjustment of led array 6.
Each led driven circuit of described led array is independently powered and independently controlled, and dimming mode is constant current
Pwm dims.Described led array 6 array is constituted from polylith different colours led bare chip 7, and each led has different peaks
Value wavelength, led bare chip 7 is connected with drive circuit 4 by the second external interface 2, and the common-anode of led array 6 is linked into together
On the positive pole of power supply, negative electrode is connected respectively in the different output channels of drive circuit 4.In led array, the arrangement mode of led has
Various shapes, including circle, rectangle etc..
It is strong that the signal from ppu that control device receives includes ambient under mensure light time spectrum detection environment
Degree information or the range information measuring sample and molecular recognition instrument under light time spectrum detection environment.
Drive circuit is bi-directionally connected with control device, and described drive circuit feeds back the relevant information of led array to controlling dress
In putting, relevant information includes: led array current size, led actual spectrum, the current duty cycle information of multiple led.Feedback system
System makes more accurate to the driving of led array.Preferably, described drive circuit comprises a radiator, adjusts because of led array
The luminous temperature producing.
Described optical element comprises illuminating window 9, hermetyic window 11 and/or diffusing globe 12 and/or condenser 8, illuminating window 9 by
The material being opaque to visible light but only infrared light thoroughly is made, and hermetyic window 11 is located at illuminating window 9 top and seals illuminating window 9；Hermetyic window 11
Comprise one block of glass.Diffusing globe 12 is located above led bare chip 7, and diffusing globe 12 surface indentation, in order to produce to emergent ray
The raw primary light distribution of uniform youth, diffusing globe 12 can control diffused light by changing its own face lines quality and position
Distribution and position, thus effectively control space profiles and the intensity distributions of light.Condenser 8 is a paraboloid condenser or one
Individual collecting lenses, condenser 8 is located at led bare chip 7 top both sides, and paraboloid condenser is made up of polylith reflecting mirror, reflecting mirror
Inner surface is gold-plated.Light collection can be become a taper by this condenser 8.Additionally, described optical element can also include one kind
Optical filter, can absorb the light less than threshold wave-length scope.
As shown in Fig. 2 drive circuit 4 is bi-directionally connected by the second external interface 2 with led array 6, drive circuit 4 controls
The size of led array 6 output current dutycycle, drive circuit 4 is sampled to actual output current, and analog current signal is turned
After turning to digital signal, transmitted to ppu 3 by the feedback lead of the first external interface 1, ppu 3 will feed back
Current duty cycle signal and output current duty cycle data are compared correction, finally pass the current duty cycle data after correction
Transport to drive circuit 4, complete a feedback compensation, through repeatedly continual feedback compensation, until actual current dutycycle reaches
To target.
The externally connected processor of feedback lead of multichannel interface or external sensor, external sensor is Distance-sensing
Device or light sensor.External interface, when carrying out feedback control, can increase a plurality of feedback lead, and feedback network makes to fill
Put and can automatically adjust emission spectrum scope.
Above-described embodiment only principle of the illustrative present invention and its effect, not for the restriction present invention.Any ripe
The personage knowing this technology all can carry out modifications and changes without prejudice under the spirit and the scope of the present invention to above-described embodiment.Cause
This, all those of ordinary skill in the art are completed under without departing from disclosed spirit and technological thought
All equivalent modifications or change, must be covered by the claim of the present invention.
Claims (10)
1. a kind of broad spectrum light source of Wavelength tunable section is it is characterised in that include the control device of housing and enclosure interior, drive
Galvanic electricity road, led array, multichannel interface, optical element:
Control device: the signal from ppu receiving is parsed, sends adjustment led array to drive circuit
The Regulate signal of optical axis, light intensity or spectral region；
Drive circuit: be bi-directionally connected with control device, the Regulate signal that receiving control device sends, make corresponding adjustment led
The action of the optical axis of array, light intensity and spectral region；
Led array: be bi-directionally connected with drive circuit, the drive signal receiving drive circuit is to produce different light intensity and frequency spectrum model
The light enclosing；
Multichannel interface: comprise ground lead, supply electrical lead, communication lead, feedback lead, feedback lead is used for connecting external treatment
Device and drive circuit, are compared renewal to feedback data；Communication lead is used for connecting ppu and control device, and handle
Communication signal passes to control device；Power supply lead wire connects control device, drive circuit and led array respectively, be control device,
Drive circuit and led array provide power supply；Ground lead connects the housing of light source；
Optical element: be arranged on the window and opticpath of illuminator, for diffusion, collimation and mistake are carried out to emergent ray
Filter.
2. Wavelength tunable section as claimed in claim 1 broad spectrum light source it is characterised in that: described control device is arranged on base
On bottom, control device is fixed on above substrate, and described drive circuit is fixed on the top of control device, and led array is located at and drives
The top of circuit, control device encapsulates the first external interface of side and second external interface at top by it, connects respectively
Ppu and drive circuit, control device is bi-directionally connected by the second external interface with drive circuit, and control device passes through
First external interface receives from outside communication signal.
3. Wavelength tunable section as claimed in claim 1 broad spectrum light source it is characterised in that: drive circuit comprises to export phase
The constant-current driven module answering led driving current and the electric module that can adjust led array, constant-current driven module includes some perseverances
Stream source chip, the pwm control signal of constant current source chip connects the pwm outfan of control device, and constant current source chip receives and is derived from
The adjustment signal of control device, makes corresponding action, and output led driving current completes to adjust；Electric module comprises to have
The electro-motor device of support led array, control device connects the controlling switch of electro-motor device, after control device will parse
Data is put in the depositor of electro-motor device, control electro-motor device complete startup under rated condition, termination and
Rotation under one fixed angular speed, so that the optical axis of led array occurs the inclination of certain angle, the optical axis of inclination makes optical axis
Converge at the position placed of object needing to irradiate.
4. Wavelength tunable section as claimed in claim 3 broad spectrum light source it is characterised in that: control device comprise control core
Piece, control chip selects single-chip microcomputer or fpga chip, after control chip parsing information, on the one hand passes through the second external interface,
Make the constant-current driven module of the pwm control output end control drive circuit of control chip, complete the output to led spectrum and adjust
Section；On the other hand, the universal input output pin of control chip controls the electric module of drive circuit, completes the light of led array
Axial adjustment.
5. Wavelength tunable section as claimed in claim 2 broad spectrum light source it is characterised in that: each of described led array
Led driven circuit is independently powered and independently controlled, and described led array array selects polylith different colours led bare chip
Constitute, each led has different peak wavelengths, and led bare chip is connected with drive circuit by the second external interface, led
The common-anode of array is linked on the positive pole of power supply together, and negative electrode is connected respectively in the different output channels of drive circuit.
6. Wavelength tunable section as claimed in claim 1 broad spectrum light source it is characterised in that: control device receive from outer
The signal of portion's processor includes ambient strength information or mensure light time spectrum under mensure light time spectrum detection environment and detects under environment
Sample and the range information of molecular recognition instrument.
7. Wavelength tunable section as claimed in claim 1 broad spectrum light source it is characterised in that: drive circuit and control device are double
To connection, described drive circuit feeds back the relevant information of led array to control device, and relevant information includes: led array current
Size, led actual spectrum, the current duty cycle information of multiple led.
8. Wavelength tunable section as claimed in claim 1 broad spectrum light source it is characterised in that: described optical element comprise illuminate
Window, hermetyic window and/or diffusing globe and/or condenser, illuminating window is made up of the material being opaque to visible light but only infrared light thoroughly, sealing
Window is located above illuminating window and seals illuminating window；Diffusing globe is located above led bare chip, diffuser surface indentation, in order to
The primary light distribution of uniform youth is produced to emergent ray；Condenser is a paraboloid condenser or collecting lenses, condenser
Both sides above led bare chip, paraboloid condenser is made up of polylith reflecting mirror, and reflecting mirror inner surface is gold-plated.
9. Wavelength tunable section as claimed in claim 2 broad spectrum light source it is characterised in that: drive circuit and led array lead to
Cross the second external interface to be bi-directionally connected, drive circuit controls the size of led array output current dutycycle, and drive circuit is to reality
Output current is sampled, and analog current signal is converted into after digital signal, is passed by the feedback lead of the first external interface
Transport to ppu, feedback current duty cycle signals and output current duty cycle data are compared school by ppu
Just, finally by correction after current duty cycle data transfer to drive circuit, complete a feedback compensation, through repeatedly uninterrupted
Feedback compensation, until actual current dutycycle reaches target.
10. Wavelength tunable section as claimed in claim 1 broad spectrum light source it is characterised in that: the feedback lead of multichannel interface
Externally connected processor or external sensor, external sensor is range sensor or light sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610720579.8A CN106338008A (en) | 2016-08-24 | 2016-08-24 | Wide spectrum light source with adjustable wavelength |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610720579.8A CN106338008A (en) | 2016-08-24 | 2016-08-24 | Wide spectrum light source with adjustable wavelength |
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| CN106338008A true CN106338008A (en) | 2017-01-18 |
Family
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| CN201610720579.8A Pending CN106338008A (en) | 2016-08-24 | 2016-08-24 | Wide spectrum light source with adjustable wavelength |
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| CN108844901A (en) * | 2018-06-25 | 2018-11-20 | 南京工程学院 | Multi-optical spectrum image collecting device |
| CN110056787A (en) * | 2019-05-24 | 2019-07-26 | 杭州罗盘星科技有限公司 | A kind of LED based broad spectrum light source |
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Application publication date: 20170118 |