CN103278241A - Multiple light source light combination system based on integrating sphere spectral measurement - Google Patents
Multiple light source light combination system based on integrating sphere spectral measurement Download PDFInfo
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- CN103278241A CN103278241A CN2013102109413A CN201310210941A CN103278241A CN 103278241 A CN103278241 A CN 103278241A CN 2013102109413 A CN2013102109413 A CN 2013102109413A CN 201310210941 A CN201310210941 A CN 201310210941A CN 103278241 A CN103278241 A CN 103278241A
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- reflective mirror
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Abstract
The invention discloses a multiple light source light combination system based on integrating sphere spectral measurement. The system comprises a light source generation device, an imaging lens, a reflective mirror and an integrating sphere. Light rays emitted by the light source generation device reach the reflective mirror through the imaging lens and enter the integrating sphere through reflection of the reflective mirror. The system can carry out light combination of different light sources conveniently and rapidly, solves the problems of combination of any optical bands and continuous adjustment of light strength, and resolves the problem of lower output energy caused by insufficient light source power.
Description
Technical field
The present invention relates to a kind of measurement mechanism, particularly a kind of multiple light courcess based on the integrating sphere spectral measurement closes photosystem, belongs to the Technology of Precision Measurement field.
Background technology
When the object spectra characteristic is carried out instantaneous measurement, the feature of the illuminating source that requirement provides must be continuous all-wave wave band, or the spectrum of some specific band, in order to obtain better stability and big dynamic range, and each band of light strength signal intensity approaches as far as possible, i.e. full wave balanced light source.
Traditional spectral scan formula spectrophotometer is when measuring, because the restriction of radiation of light source scope in whole wave band, needs to change different light sources, adopts deuterium lamp when measuring 200nm～400nm, adopts tungsten lamp when measuring 400nm～780nm.Measure with the continuous spectrum that satisfies from the ultraviolet to the visible light.But the mode (as fiber spectrometer) when transient acquisition is measured that this light source switches is disabled.
In the transient state spectral measurement, require the spectral energy of the full spectral coverage of luminophor provide to expose to sample surfaces simultaneously, the bandwidth requirement that the single light source that can provide at present can't satisfy its spectral energy is as from (200nm～800nm).
Owing to the restriction of the power of light source own, the output energy of single light source can not satisfy the measurement requirement in this external actual measurement.
The common light method of closing has:
One adopts the dichroic mirror method to close light.The method that had both adopted transmission and reflection to filter is closed light.
Its two, the light source stacked system closes light.Both adopted two light sources to close light in the mode that same optical axis direction directly superposes.
The dichroic mirror method is owing to need specific dichroic filter and complicated optical system, and cost is higher, adjusts difficulty.The light source stacked system closes light and Different Light need be collimated on the same axis, the light source about two kinds of can only superposeing usually, and spectral coverage is limited in scope.
Summary of the invention
For solving the problems of the technologies described above, the invention provides and a kind ofly the invention provides a kind of tunable optical wave band of integral way, the multiple spot of tunable optical intensity closes the radiant system.Can carry out the light that closes of Different Light easily and efficiently.
The technical scheme that addresses the above problem is:
Multiple light courcess based on the integrating sphere spectral measurement closes photosystem, comprise: light source generating means, imaging len, reflective mirror, integrating sphere, the light of described light source generating means emission arrives described reflective mirror through described imaging len, enters described integrating sphere through described reflective mirror again.
Preferably, described integrating sphere comprises sample dish, aperture diaphragm, and described sample dish is located at an end of described integrating sphere, and described aperture diaphragm is located at an end of the described integrating sphere corresponding with described sample dish.
Preferably, the light of described reflective mirror reflection enters described integrating sphere through described aperture diaphragm.
The invention has the advantages that the light that closes that can carry out Different Light easily and efficiently.Solve combination and the continuously adjustable problem of light intensity of any optical band, and solved the output energy problem on the low side that light source power causes inadequately.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Description of drawings
Fig. 1 is principle of the invention figure;
Fig. 2 is the integrating sphere synoptic diagram;
Fig. 3 (a) is the spectral signature of light source A;
Fig. 3 (b) is the spectral signature of light source B;
Fig. 3 (c) is the spectral signature of light source C;
Fig. 3 (d) is that light source A, B, C close the curve of spectrum behind the light.
Embodiment
In order to deepen the understanding of the present invention, the invention will be further described below in conjunction with embodiment and accompanying drawing, and this embodiment only is used for explaining the present invention, does not constitute the restriction to protection domain of the present invention.
As described in Fig. 1-3, the multiple light courcess that the invention provides based on the integrating sphere spectral measurement closes photosystem, comprise: light source generating means, imaging len, reflective mirror, integrating sphere, the light of light source generating means emission arrives reflective mirror through imaging len, enters integrating sphere through reflective mirror again.
Integrating sphere comprises sample dish 1, aperture diaphragm 2, and sample dish 1 is located at an end of integrating sphere, and aperture diaphragm 2 is in an end of the integrating sphere corresponding with sample dish 1.The light via hole diameter diaphragm 2 of reflective mirror reflection enters described integrating sphere.
The present invention adopts the multichannel light source to focus on each aperture diaphragm simultaneously after lens, catoptron adjustment, different light sources through the diaphragm direct irradiation to the measured object surface, through the integrating sphere diffusion to detector.
The present invention not only can provide the continuous spectrum of optical band.The spectrum (as removing the part jammr band) of selectivity specific band also can be provided.
For because the Power Limitation of light source own, energy of light source is low excessively, and the mode that the present invention can take light source multiplex stack of the same race to strengthen strengthens the power of light source.
In conjunction with the embodiments, two light sources close light, as Fig. 1, and light source S
1The light of emission is through imaging len R
1Arrive reflective mirror M
1, the via hole diameter diaphragm enters integrating sphere again, the irradiation sample; Meanwhile, light source S
2The light of emission is through imaging len R
2Arrive reflective mirror M
2, the via hole diameter diaphragm enters integrating sphere again, the irradiation sample.Light is closed in realization.
Three light sources close light, and as Fig. 3, the present invention is achieved by the following technical solutions:
Present embodiment comprises light source generating means A, B, C, and one forms as lens, one group of reflective mirror, one group of integrating sphere that aperture diaphragm, employing d/0 mode receive.
Light source generating means A, B, C, the light source that sends is by imaging len, reflective mirror and aperture diaphragm direct irradiation testee surface.Carry out the light that closes of multiple light courcess through the integrating sphere integral way.
Adopt the continuously adjustable mode of each light source power can adjust the spectral energy of each optical band easily, it is mated mutually.
Adopt the light source of changing different spectrum segment characteristics can obtain to measure the spectrum of each required optical band easily.
Owing to adopt the light that closes of any light source, when the output power of one group of illuminating source is limited, then can adopt the mode of stack, its output power is multiplied.
To sum up, the present invention can carry out the light that closes of Different Light easily and efficiently.Solve combination and the continuously adjustable problem of light intensity of any optical band, and solved the output energy problem on the low side that light source power causes inadequately.Be suitable for widespread use.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. the multiple light courcess based on the integrating sphere spectral measurement closes photosystem, it is characterized in that: comprising: light source generating means, imaging len, reflective mirror, integrating sphere, the light of described light source generating means emission arrives described reflective mirror through described imaging len, enters described integrating sphere through described reflective mirror reflection again.
2. the multiple light courcess based on the integrating sphere spectral measurement according to claim 1 closes photosystem, it is characterized in that: described integrating sphere comprises sample dish, aperture diaphragm, described sample dish is located at an end of described integrating sphere, and described aperture diaphragm is located at an end of the described integrating sphere corresponding with described sample dish.
3. the multiple light courcess based on the integrating sphere spectral measurement according to claim 2 closes photosystem, it is characterized in that: the light of described reflective mirror reflection enters described integrating sphere through described aperture diaphragm.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111207831A (en) * | 2020-01-10 | 2020-05-29 | 安徽皖仪科技股份有限公司 | Light source switching method of multi-light source monochromator |
| CN112014069A (en) * | 2019-05-28 | 2020-12-01 | 杭州远方光电信息股份有限公司 | Imaging measuring device |
| CN114252453A (en) * | 2021-12-29 | 2022-03-29 | 清远加多宝草本植物科技有限公司 | Detection system and detection method |
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Application publication date: 20130904 |