CN209101028U - LED light fibre source device - Google Patents
LED light fibre source device Download PDFInfo
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- CN209101028U CN209101028U CN201821978402.9U CN201821978402U CN209101028U CN 209101028 U CN209101028 U CN 209101028U CN 201821978402 U CN201821978402 U CN 201821978402U CN 209101028 U CN209101028 U CN 209101028U
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Abstract
The utility model is related to a kind of LED light fibre source device, comprising: LED light source；LED fluorescence excitation portion, in the optical path for installing the light being emitted to the LED light source, the light being emitted by the LED light source in the LED fluorescence excitation portion is set all to be converted into the flat visible light of the spectrum with continuous wavelength, the light for the LED light source to be emitted is converted to the continuous and flat visible light of wavelength.The LED light fibre source device of the utility model is using LED light source as illuminating source, calorific value is small, service life is long, and due to LED light fluorescence excitation portion, the light for not meeting spectral detection requirement that the LED light source is emitted is converted into the white light with continuous wavelength, and coupling efficiency is high, compact-sized, it is low in energy consumption, it is suitable for carrying out spectral detection.
Description
Technical field
The utility model relates to optical path handoff technique field, in particular to a kind of LED light fibre source device.
Background technique
Spectroscopy is ultraviolet, visible, near-infrared and infrared band luminous intensity the technology of measurement.Spectral measurement is widely used
In multiple fields, such as color measuring, the measurement of concetration of chemical analysis or radiometry analysis, film thickness measuring, gas composition analysis
Equal fields.
It is associated test devices small, integrated with the development of fiber spectrometer technology, it is measured in fiber spectrum
In system, optical fiber source device is its indispensable a part.Halogen lamp (osram lamp) is common heat radiation light source,
It can be seen that having continuous radiation in-infrared range of spectrum, in fiber spectrum test macro, majority uses halogen lamp as light
Source.
However, calorific value is big since halogen lamp luminous efficiency itself is low, the service life is shorter, needs in instrument use frequently
Replacement is not suitable for the product that battery is directly powered.Although and LED light source is with small in size, luminous efficiency is high, the service life is long, light intensity
The advantages that degree is stablized, but the visible-range of 400-700nm cannot be completely covered in the spectrum of Conventional white LED light source, therefore not
It is suitable as the light source of spectral measurement system.
Utility model content
The purpose of this utility model is to provide a kind of LED light fibre source devices, provide one kind in visible-range
There is flat spectrum curve, high, compact-sized, low-power consumption the LED light fibre source of optical coupling efficiency in (400nm-700nm).
In order to solve the above-mentioned technical problem, the utility model provides a kind of LED light fibre source device, comprising: LED light
Source；LED fluorescence excitation portion in the optical path for installing the light being emitted to the LED light source, makes by the LED fluorescence excitation portion
The light of LED light source outgoing is all converted into the flat visible light of the spectrum with continuous wavelength.
Optionally, further include drive circuit board, be converted to driving for being connected to external power supply, and by the external power supply
Electric current, to drive the LED light source to shine.
Optionally, the LED fluorescence excitation portion includes the protective cover coated with fluorescent powder, and setting goes out in the LED light source
In the optical path for the light penetrated.
Optionally, the fluorescent powder is coated on the protective cover towards the side of the LED light source.
Optionally, further include lens and optical fiber, be successively set in the optical path of the light of the LED fluorescence excitation portion outgoing,
Wherein: the lens are used to converge to the light that the LED fluorescence excitation portion is emitted the inner core end face of the optical fiber.
Optionally, the LED light source includes: substrate, is connected with the drive circuit board, for conducting the driving electricity
Stream；LED chip, installation to the substrate, for shining under the driving of the driving current；Radiating part is installed on the base
Plate, generated thermal energy radiates when for shining to the LED chip.
Optionally, the wavelength of the visible light with continuous wavelength is in 400nm between 700nm.
The LED light fibre source device of the utility model is using LED light source as illuminating source, and calorific value is small, and the service life is long, and
Since with LED fluorescence excitation portion, the light for not meeting spectral detection that the LED light source is emitted is converted into continuous wavelength
The flat white light of spectrum, coupling efficiency is high, compact-sized, low in energy consumption, is suitable for carrying out spectral detection.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of LED light fibre source device in a kind of specific embodiment of the utility model.
Specific embodiment
Below in conjunction with the drawings and specific embodiments to the utility model proposes a kind of LED light fibre source device it is further
It is described in detail.
It has been investigated that there are apparent peak values at 450nm and 600nm for the spectrum of LED light source, and deposited at 500nm
In larger recess.Due to LED light source luminous intensity is at peak value and recess has very big difference, and the spectrum of LED light source cannot
The visible-range of 400-700nm is completely covered, therefore when the LED light source described in practical application, it should not be by the LED
Light source directly as optical fiber source device illuminating source because this is the wave band requirement being unable to satisfy as optical fiber source device
's.
However, the study found that the light that the LED light source is emitted can be converted into having by setting LED fluorescence excitation portion
There is the white light of continuous flat wavelength, the final wave band to make the light of the LED light source outgoing meet the optical fiber source device is wanted
It asks.
Referring to Fig. 1, for the structural representation of LED light fibre source device in a kind of specific embodiment of the utility model
Figure.In this specific embodiment, the LED light fibre source device includes: LED light source；LED fluorescence excitation portion, installation is extremely
In the optical path of the light of the LED light source outgoing, convert the light being emitted by the LED light source in the LED fluorescence excitation portion all
At the visible light that the spectrum with continuous wavelength is flat.
In a specific embodiment, the LED fluorescence excitation portion includes the protective cover 5 coated with fluorescent powder, setting
In the optical path of the light of LED light source outgoing, the light of LED light source outgoing is converted, the LED light source is adjusted and goes out
The wavelength for the light penetrated makes to meet the requirement as optical fiber source, such as has the visible light of 400 to 700nm continuous wavelength.
In a specific embodiment, the protective cover 5 is transparent protective shield, and the protective cover has certain thickness
Degree, when so that the LED light source being placed in the protective cover, the protective cover 5 can play certain guarantor for the LED light source
Shield effect.
In specific embodiment shown in Fig. 1, the protective cover 5 covers the LED light source, to all through the LED
The light of light source outgoing is all converted, to obtain more satisfactory light.
The conversion of the light of LED light source outgoing is dependent on light to the excitation of fluorescent powder.Realize the light of LED light source outgoing
To the excitation of fluorescent powder, need for the fluorescent powder to be coated on the protective cover 5 towards the side of the LED light source, with
The transfer efficiency for making LED light source be converted into the white light of continuous wavelength is higher.
In a specific embodiment, the fluorescent powder include magnesium sulfate barium blue colour fluorescent powder (peak wavelength 450nm),
Nitrogen oxides blue-green fluorescent powder (peak wavelength 495nm), silicate green fluorescent powder (peak wavelength 525nm) or nitrogen oxides
At least one of red fluorescence powder (peak wavelength 660nm).
In a specific embodiment, LED light fibre source device further includes drive circuit board 1, external for being connected to
Power supply, and the external power supply is converted into driving current, to drive the LED light source to shine.
Referring to Fig. 1, in this specific embodiment, the drive circuit board 1 has current regulation button, can be from small
To the big adjusting driving current, so as to adjust the output power of the LED light source.
In a specific embodiment, LED light fibre source device further includes lens 6 and optical fiber, is successively set on described
In the optical path of the light of the fluorescence excitation portion LED outgoing, in which: the light that the lens 6 are used to for being emitted in the LED fluorescence excitation portion converges
Gather on the inner core end face of the optical fiber.The lens 6 are collector lens.
Specifically, the light of the LED fluorescence excitation portion outgoing first passes through the lens 6, by the lens 6 to the LED
The optical path of the light of fluorescence excitation portion outgoing is adjusted, and the light total number being emitted from the lens 6 converges in the inner core of the optical fiber
On end face, so that the overwhelming majority of the light of the fluorescence excitation portion LED outgoing all can be used as the outgoing of the LED light fibre source device
Light makes the LED light fibre source device light extraction efficiency with higher.
In a specific embodiment, the LED light fibre source device further includes optical fiber pedestal, including is provided with optical fiber
The box thread portion 7 of port is provided with screw thread outside the box thread portion 7, and is internally provided with the male screw portion 8 of screw thread.It is described
Male screw portion 8 is used to be inserted into for the optical fiber, and inside diameter is greater than the outer dia in the box thread portion 7, also greater than the light
Fine outer diameter, and male screw portion 8 and the size in box thread portion 7 cooperate, so that the internal whorl of the male screw portion 8 can be with
It cooperates with the external screw-thread in the box thread portion 7.After the male screw portion 8 has been inserted into optical fiber, it can still be installed to institute
Box thread portion 7 is stated, so that the optical fiber be made to remain unchanged in the LED light fibre source device.
In specific embodiment shown in Fig. 1, the position of the optical fiber pedestal meets claimed below: installing when by optical fiber
When the optical fiber pedestal, the light beam converged through LED light source outgoing, the conversion outgoing of the fluorescence excitation portion LED, lens 6 is just
On the inner core end face for projecting the optical fiber installed on the optical fiber pedestal.
In a specific embodiment, the LED light source includes: substrate 3, is connected with the drive circuit board 1, is used
In the conduction driving current；LED chip 4, installation to the substrate 3, for shining under the driving of the driving current；It dissipates
Hot portion 2 is installed on the substrate 3, and generated thermal energy radiates when for shining to the LED chip 4.
In a specific embodiment, the substrate 3 is aluminum substrate.In fact, the substrate 3 can be set as needed
Specific material.However, since aluminum substrate had not only met the conductive demand as substrate 3, but also there is lesser quality, therefore use
The LED light fibre source device of aluminum substrate has smaller total quality, is applicable to more have the quality of optical fiber source device
The occasion having higher requirements.
In a specific embodiment, it is provided with electrode on the aluminum substrate, for directly connecting for the LED chip 4
It is connected to the electrode, to get the driving current.The electrode of the aluminum substrate is connected to the drive by contact conductor
Dynamic circuit board 1, to get the driving current that the drive circuit board 1 exports.
In a specific embodiment, the LED chip 4 is high-power LED chip, to meet the LED chip 4
The power demand of illuminating source as 4 optical fiber source device of LED chip.Indeed, it is possible to which the LED core is set as needed
The power bracket of piece 4.
In a kind of more preferably specific embodiment, the LED chip 4 is paster LED chip, so that the LED light is fine
Light supply apparatus it is small in size, be applicable to the occasion to the volume requirement of the LED light fibre source device.
In specific embodiment shown in Fig. 1, the LED chip 4 is high-power black light paster LED chip.This
When, on the inside of the protective cover coated by the fluorescent powder formulated component and the high-power black light paster LED chip
The wave band of the light of outgoing should be matched, and can be converted to the light of the high-power black light paster LED chip outgoing
The white light of continuous spectrum in visible-range.
The radiating part 2 of the LED light source has comb teeth-shaped structure, including at least three comb teeth, is arranged in the radiating part 2
The one side not contacted directly with the substrate 3.The comb teeth-shaped structure increases the contact area of the radiating part 2 and air,
Enable the LED chip 4 when shining the overwhelming majority of generated thermal energy directly spill into air, considerably increase institute
State the radiating efficiency of LED light source.
In a specific embodiment, the wavelength of the visible light with continuous wavelength 400nm to 700nm it
Between.In fact, the wavelength of the visible light with continuous wavelength can be set as needed.It should be noted that in the tool
When having the wavelength of the visible light of continuous wavelength to change, the specific component ratio of the fluorescent powder will may also occur accordingly
Variation.
The LED light fibre source device of the utility model uses illuminating source of the LED light source as optical fiber source device, fever
Measure small, the service life is long, and due to LED fluorescence excitation portion, the light for not meeting optical fiber source requirement that the LED light source is emitted
It is converted into the white light with continuous wavelength, coupling efficiency is high, and it is compact-sized, it is low in energy consumption, it is suitable for carrying out spectral detection.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
Art personnel can also make several improvements and modifications without departing from the principle of this utility model, these improvements and modifications
Also it should be regarded as the protection scope of the utility model.
Claims (7)
1. a kind of LED light fibre source device characterized by comprising
LED light source；
LED fluorescence excitation portion in the optical path for installing the light being emitted to the LED light source, makes by the LED fluorescence excitation portion
The light of LED light source outgoing is all converted into the flat visible light of the spectrum with continuous wavelength.
2. LED light fibre source device according to claim 1, which is characterized in that further include drive circuit board, for connecting
Driving current is converted to external power supply, and by the external power supply, to drive the LED light source to shine.
3. LED light fibre source device according to claim 1, which is characterized in that the LED fluorescence excitation portion includes coating
There is the protective cover of fluorescent powder, is arranged in the optical path of the light of the LED light source outgoing.
4. LED light fibre source device according to claim 3, which is characterized in that the fluorescent powder is coated on the protection
It covers towards the side of the LED light source.
5. LED light fibre source device according to claim 1, which is characterized in that further include lens and optical fiber, set gradually
In the optical path of the light of LED fluorescence excitation portion outgoing, in which:
The lens are used to converge to the light that the LED fluorescence excitation portion is emitted the inner core end face of the optical fiber.
6. LED light fibre source device according to claim 2, which is characterized in that the LED light source includes:
Substrate is connected with the drive circuit board, for conducting the driving current；
LED chip, installation to the substrate, for shining under the driving of the driving current；
Radiating part is installed on the substrate, and generated thermal energy radiates when for shining to the LED chip.
7. LED light fibre source device according to claim 1, which is characterized in that described to have continuous wavelength and spectrum flat
The wavelength of smooth visible light is in 400nm between 700nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821978402.9U CN209101028U (en) | 2018-11-28 | 2018-11-28 | LED light fibre source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821978402.9U CN209101028U (en) | 2018-11-28 | 2018-11-28 | LED light fibre source device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209101028U true CN209101028U (en) | 2019-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821978402.9U Active CN209101028U (en) | 2018-11-28 | 2018-11-28 | LED light fibre source device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114679973A (en) * | 2022-04-14 | 2022-07-01 | 北京金晟达生物电子科技有限公司 | Forage grass rotating tower with efficient layout and illumination module |
-
2018
- 2018-11-28 CN CN201821978402.9U patent/CN209101028U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114679973A (en) * | 2022-04-14 | 2022-07-01 | 北京金晟达生物电子科技有限公司 | Forage grass rotating tower with efficient layout and illumination module |
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