CN1178087C - System capable of changing output light wavelength and intensity - Google Patents
System capable of changing output light wavelength and intensity Download PDFInfo
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- CN1178087C CN1178087C CNB021028524A CN02102852A CN1178087C CN 1178087 C CN1178087 C CN 1178087C CN B021028524 A CNB021028524 A CN B021028524A CN 02102852 A CN02102852 A CN 02102852A CN 1178087 C CN1178087 C CN 1178087C
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Abstract
The present invention relates to a system capable of changing the wavelength and the intensity of output light, which comprises a light input end, a first light output end, a second light output end, a first rotary type optical element, a second rotary type optical element and a third rotary type optical element, wherein the light input end receives a first light signal and a second light signal; when the first rotary type optical element adjusts an angle, the first light signal can pass through, and the second light signal can reflect. Second rotary type optical element can output the first light signal from the first light output end, when the second rotary type optical element adjusts an angle, the intensity of the first light signal outputted from the first light output end generates variation. According to the angle of the first rotary type optical element, an angle of a third rotary type optical element is correspondingly adjusted so as to output the second light signal from the second light output end.
Description
Technical field
The present invention relates to a kind of system that changes output light wavelength and intensity, especially relate to a kind of by adjusting the system of angle that be provided with of optical element with change output light wavelength and intensity.
Background technology
In recent years, because the demand in development of technology and market, various photovoltaic all develop towards light, thin, short, little and multi-functional direction.
Adjustable filter (tunable filter) is made up of the transparent material of specific refractive index, and the variation of the incident angle by light filters out the light beam of specific wavelength.As shown in Figure 1, wave filter 111 and wave filter 112 are fitted in respectively on sheet glass 101 and 102, when being λ by a wavelength
1, λ
2, λ
3When the light that is constituted incides on the wave filter 111, adjust the angle that sheet glass 101 is provided with, wave filter 111 can reflection wavelength be λ
1Light beam, and the light beam of its commplementary wave length is passed through.In addition, after light incides wave filter 112, adjust the angle that sheet glass 102 is provided with, making wave filter 112 reflection wavelengths is λ
2Light beam, and to filter out wavelength be λ
3Light beam.
Optical attenuator (attenuator) is in order to change the intensity of light output, for example can be applied in the receiver, so that make receiver dynamically adjust the light intensity that receives, to avoid the problem of the saturation of receiver.As shown in Figure 2, optical attenuator can be one and absorbs wheel 201, and absorbing wheel 201 is to have different absorbing amount at diverse location, and for example wavelength is λ
1Light beam, after absorbing wheel 201, the beam intensity of output weakens, corresponding intensity changes λ into
1'.In addition, more can reach the purpose that different light decrements are provided by adjusting the angle that absorbs wheel 201.
Therefore, how to make adjustable filter and optical attenuator modularization,, come down to an important problem to reach light, thin, short, little, multi-functional, and the purpose cheaply of photovoltaic.
Summary of the invention
Because above-mentioned problem and situation the object of the present invention is to provide a kind of have simultaneously the changed output light wavelength of adjustable filter and optical attenuator function and the system of intensity.
Therefore, the present invention is by adjusting the angle of optical element respectively, filter out the light beam of specific wavelength, and adjusts the intensity of output beam.
In order to achieve the above object, the invention provides a kind of system that can change output light wavelength and intensity, it comprises a light input end, one first light output end, one second light output end, one first rotary optical element, one second rotary optical element, one the 3rd rotary optical element.Light input end receives one first light signal and one second light signal, when the first rotary optical element angular setting, first light signal is passed through, the reflection of second light signal.The second rotary optical element can make first light signal export from first light output end, when the second rotary optical element angular setting, changes from the intensity of first light signal of first light output end output.The angle of the 3rd rotary optical element is to do corresponding adjustment according to the angle of the first rotary optical element, so that second light signal can be exported from second light output end.
This first rotary optical element has a wave filter (filter).This first, the second and the 3rd rotary optical element is a sheet glass.This second rotary optical element is provided with a plurality of total reflection plated films.This second rotary optical element is one group of catoptron.This first, the second, the 3rd rotary optical element is equipped with a plurality of anti-reflection coatings.
As mentioned above, by the system that changes output light wavelength and intensity of the present invention, mainly be to utilize three revolving optical elements, adjust the angle of its setting, so that the light beam of incident is because of the change of incident angle, make wave filter can filter out the light beam of specific wavelength, and can adjust the output intensity that leaches light beam.
Description of drawings
With reference to accompanying drawing, below will be to being described in detail according to the system that changes output light wavelength and intensity of the present invention, advantages and features of the invention display with will be more readily apparent from,
Accompanying drawing comprises:
Fig. 1 is the synoptic diagram of existing wave filter;
Fig. 2 is the synoptic diagram of existing optical attenuator;
Fig. 3 is the synoptic diagram of first preferred embodiment of the present invention;
Fig. 4 is the synoptic diagram of second preferred embodiment of the present invention;
Fig. 5 is the synoptic diagram of the 3rd preferred embodiment of the present invention.
Embodiment
As shown in Figure 3, the changed output light wavelength of first preferred embodiment of the invention and intensity
Modification text according to the notification of examiner's opinion first time System 3 include a light input end, one first light output end, one second light output end, one first rotary optical element 301, one second rotary optical element 302, one the 3rd rotary optical element 303.Wherein, light input end is provided with collimating apparatus 31, the first light output ends and is provided with collimating apparatus 32, the second light output ends and is provided with collimating apparatus 33, with so that light is parallel inputs or outputs.
The second rotary optical element 302 can be a sheet glass, and it is fitted with or is coated with anti-reflection coating 312 and 322.Wavelength is λ
iLight beam wear and penetrate behind anti-reflection coating 312, in the second rotary optical element 302, behind the number back reflectives, penetrate, and through collimating apparatus 32 parallel outputs by anti-reflection coating 322.When the second rotary optical element 302 when the B direction is rotated because the intensity of light output is Gaussian distribution, so light is incident in the angle that the intensity in the collimating apparatus 32 can be provided with by the second rotary optical element 302 and influences.In other words, by changing the angle of the second rotary optical element 302, can change the intensity of the light of output from collimating apparatus 32.
The 3rd rotary optical element 303 can be a sheet glass, and it is fitted with or is coated with anti-reflection coating 313 and 323.The 3rd rotary optical element 303 angles system does corresponding adjustment according to the angle of this first rotary optical element, and for example along C direction rotation among the figure, so that wear the light beam of penetrating the anti-reflection coating 331 on the first rotary optical element 301, promptly wavelength is λ
1～λ
I-1And λ
I+1～λ
nLight beam, can be incident in the anti-reflection coating 313 of the 3rd rotary optical element 303.This light beam passes through from anti-reflection coating 313 through after several times the reflection, again through collimating apparatus 33 outputs.
As shown in Figure 4, the system 4 of the changed output light wavelength of the present invention's second preferred embodiment and intensity includes a light input end, one first light output end, one second light output end, one first rotary optical element 401, one second rotary optical element 402,402 ', and one the 3rd rotary optical element 403.Wherein, light input end is provided with collimating apparatus 41, the first light output ends and is provided with collimating apparatus 42, the second light output ends and is provided with collimating apparatus 43, with so that light is parallel inputs or outputs.
The first rotary optical element 401, the second rotary optical element 402 and the 402 ', the 3rd optical element 403 are sheet glass, wherein the first rotary optical element 401 is provided with wave filter 421, anti-reflection coating 411 and 431, the 3rd rotary optical element 403 is provided with anti-reflection coating 413 and 423, the second rotary optical elements 402 then are coated with total reflection plated film 412 on the face of light incident.In present embodiment, the function and the start of the first rotary optical element 401 and the 3rd rotary optical element 403, the system with first preferred embodiment in the first rotary optical element 301 identical with the 3rd rotary optical element 303, mainly by the angle of rotating the first rotary optical element 401, A direction as shown in FIG., access the light beam of desiring to leach wavelength, the 3rd rotary optical element 403 then cooperates the anglec of rotation of the first rotary optical element 401 to adjust, C direction as shown in FIG. is to export the light beam of its commplementary wave length.
When wave filter 421 wavelength that leaches is λ on the first rotary optical element 401 by being located at
iLight beam when being incident to the second rotary optical element 402, owing to be coated with total reflection plated film 412 on the second rotary optical element 402, therefore light beam can be reflected, incide again on the second rotary optical element 402 ', same, owing to be plated on the reflection of the total reflection plated film 412 ' on the second rotary optical element 402 ', but make light beam autocollimator 42 export.When the second rotary optical element 402 ' when the direction of B shown in the figure is rotated because the intensity of light output is the curve of Gaussian distribution, therefore adjust the angle that the second rotary optical element 402 ' is provided with, can change the intensity of autocollimator 42 output beams.
Fig. 5 is the changed output light wavelength of the 3rd preferred embodiment of the present invention and the system 5 of intensity.In the present embodiment, the first rotary optical element 501, the 3rd rotary optical element 503, be located at wave filter 521 on the first rotary optical element 501, be located at the anti-reflection coating 511,531,513,523 on the first rotary optical element 501 and the 3rd rotary optical element 503, it makes flowing mode and function all is identical with second preferred embodiment with first preferred embodiment, does not repeat them here.
In the present embodiment, the second rotary optical element 502 and 502 ' is a catoptron, and leaching wavelength in order to reflection from wave filter 521 is λ
iLight beam.The second rotary optical element 502 can rotate along the B direction shown in the figure, so that the change of the incident angle of light beam, and then the direction that light path is propagated changes.When light beam was incident in the incident angle change of the second rotary optical element 502, then the intensity of autocollimator 52 output beams also can be along with change.In like manner, when the second rotary optical element 502 ' when the D direction shown in the figure is rotated, or change simultaneously the second rotary optical element 502 and 502 ' angle is set the time, also can reach the effect that changes output light intensity.
In sum, be incident in the wave filter incident angle change that is located on the first rotary optical element by adjusting the angle of the first rotary optical element, can making, to filter out the light beam of specific wavelength.In addition, by adjusting the angle of the second rotary optical element, can adjust the intensity of the light beam autocollimator output of this specific wavelength.Moreover, by adjusting the angle of the 3rd rotary optical element, so that the light beam beyond this specific wavelength can be from another collimating apparatus output.Therefore,, can make adjustable filter and optical attenuator modularization, to reach light, thin, short, little, the multi-functional purpose cheaply that reaches of optical devices by three rotary optical elements.
Be noted that above-mentioned wave filter also can be designed at specific wavelength λ
iReflection, all the other wavelength X
1～λ
I-1And λ
I+1～λ
nThe wave filter of transmission.
The above for the character of giving an example, is not to be restrictive description only.Anyly do not break away from spirit of the present invention and category, and, all should be contained within the appended claim scope its equivalent modifications of carrying out or change.
Claims (9)
1. system that can change output light wavelength and intensity is characterized in that it comprises:
One light input end is used to receive one first light signal and one second light signal;
One first light input end;
One second light input end;
One first rotary optical element, it is made of sheet glass, a surface of this sheet glass is provided with a wave filter and one first anti-reflection coating, when this sheet glass angular setting, this wave filter make this first light signal by and reflect this second light signal, and this second light signal penetrates via this first anti-reflection coating;
One second rotary optical element, it can export this first light signal from this first light output end, and when this second rotary optical element angular setting, the intensity of this first light signal of this first light output end output changes certainly; And
One the 3rd rotary optical element, it is made of sheet glass, and be provided with one first anti-reflection coating in its surface, the angle of the 3rd rotary optical element is done corresponding adjustment according to the angle of this first rotary optical element, so that this second light signal is by this second light output end output.
2. the system that changes output light wavelength and intensity as claimed in claim 1 is characterized in that, this second rotary optical element is made of sheet glass.
3. the system that changes output light wavelength and intensity as claimed in claim 2 is characterized in that this surface of plate glass is provided with at least two anti-reflection coatings.
4. the system that changes output light wavelength and intensity as claimed in claim 1 is characterized in that, this second rotary optical element is provided with a plurality of total reflection plated films.
5. the system that changes output light wavelength and intensity as claimed in claim 1 is characterized in that, this second rotary optical element is made of one group of catoptron.
6. the system that changes output light wavelength and intensity as claimed in claim 1, it is characterized in that, this first rotary optical element also is provided with one second anti-reflection coating, and this first and this second light signal be to enter this first rotary optical element via this second anti-reflection coating.
7. the system that changes output light wavelength and intensity as claimed in claim 1 is characterized in that, the 3rd rotary optical element also is provided with one second anti-reflection coating, and this second light signal is to enter the 3rd rotary optical element via this second anti-reflection coating.
8. the system that changes output light wavelength and intensity as claimed in claim 1 is characterized in that this light input end is provided with a collimating apparatus.
9. the system that changes output light wavelength and intensity as claimed in claim 1 is characterized in that, this first and this second light output end be equipped with a collimating apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021028524A CN1178087C (en) | 2002-01-25 | 2002-01-25 | System capable of changing output light wavelength and intensity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021028524A CN1178087C (en) | 2002-01-25 | 2002-01-25 | System capable of changing output light wavelength and intensity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1434339A CN1434339A (en) | 2003-08-06 |
| CN1178087C true CN1178087C (en) | 2004-12-01 |
Family
ID=27627675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021028524A Expired - Fee Related CN1178087C (en) | 2002-01-25 | 2002-01-25 | System capable of changing output light wavelength and intensity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1178087C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109716198B (en) * | 2016-06-17 | 2022-10-04 | 索邦大学 | Apparatus for illuminating an object with a controllable light intensity and associated method |
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2002
- 2002-01-25 CN CNB021028524A patent/CN1178087C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1434339A (en) | 2003-08-06 |
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