CN106932340A - Optical detection system based on integrating sphere - Google Patents
Optical detection system based on integrating sphere Download PDFInfo
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- CN106932340A CN106932340A CN201511026936.2A CN201511026936A CN106932340A CN 106932340 A CN106932340 A CN 106932340A CN 201511026936 A CN201511026936 A CN 201511026936A CN 106932340 A CN106932340 A CN 106932340A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
Abstract
The present invention relates to instrument and meter industry analysis meter survey technology field, a kind of optical detection system based on integrating sphere is disclosed.Optical detection system based on integrating sphere of the invention includes the first spectrophotometer, first integral ball and the first attenuator；First spectrophotometer includes the first photodetector and the second photodetector；In the first detection light path of optical detection system, sample light is entered in first integral ball via after sample transmission or reflection by the first smooth through hole of first integral ball, and by the second smooth through hole outgoing and enters the first photodetector after the inner surface diffusing reflection by first integral ball；In the second detection light path of optical detection system, reference light enters the second photodetector after decaying via the first attenuator.The detecting system improves the signal detecting mode of existing integrating sphere product, simplifies and has fallen the original detection circuit of integrating sphere itself, reduces integrating sphere cost, and it can be made preferably to complete and the effect that detection sample is engaged between spectrophotometer.
Description
Technical field
The present invention relates to instrument and meter industry analysis meter survey technology field, more particularly, to a kind of light inspection based on integrating sphere
Examining system.
Background technology
Current integrating sphere product, when coordinating test with the instrument such as spectrophotometer, the detector carried using integrating sphere is carried out
Signal detection.As shown in figure 1, when being detected to sample, the sample light A and not of sample or sample reflection is will transmit through
Contrasted after the reference light B of sample transmission or reflection carries out diffusing reflection in integrating sphere, drawn the test result of sample.
Wherein, in the detection light path of transmission sample light, after sample light A reflects via speculum (speculum 1 and 2), pass through
Ocean flat 9 enters in integrating sphere 3, after being integrated the inwall diffusing reflection of ball 3, is integrated the detector 8 inside ball 3 and receives, together
When, in the detection light path of reference light, reference light is reflected into integrating sphere 3 via speculum 7, is then detected by device 8
Receive.The method of testing of sample reflected sample light is similar with the method for testing of sample transmission sample light, for example, in sample light
In detection light path, sample light cuts across integrating sphere 3 after speculum 1 and 2 reflects, and reaches the surface of sample 10, quilt
Sample 10 enters in integrating sphere 3 after launching, and is connect by the detector 8 inside integrating sphere 3 after being integrated the inwall diffusing reflection of ball 3
Receive.Additionally, in order to tackle wider range wavelength (such as：185nm~3300nm) signal detection, integrating sphere will also
Using various detectors for carrying, the waste of the complicated and cost of structure is caused.
The content of the invention
In order to solve the above problems, the invention discloses a kind of optical detection system based on integrating sphere, using spectrophotometric
The signal detector of itself is counted to detect by the sample signal of integrating sphere and through the reference signal after overdamping balance.
In order to solve the above technical problems, embodiments of the present invention disclose a kind of optical detection system based on integrating sphere, including
First spectrophotometer, first integral ball and the first attenuator；
First spectrophotometer includes the first photodetector and the second photodetector；
First integral ball scribbles the hollow spheres of diffuse-reflective material for inwall, and the first integral ball includes the first smooth through hole and second
Light through hole；
Optical detection system first detection light path on, sample light via after sample transmission or reflection by the first of first integral ball
Light through hole enters in first integral ball, and by the second smooth through hole outgoing and enters after the inner surface diffusing reflection by first integral ball
First photodetector；In the second detection light path of optical detection system, reference light enters second after decaying via the first attenuator
Photodetector.
The signal detecting mode of existing integrating sphere product is improved, the spectrophotometer itself commonly used when being measured using integrating sphere
Signal detector, the reference light after detecting by the sample light of integrating sphere and being balanced through overdamping, so as to simplify fall integrating sphere
Itself original detection circuit, reduces integrating sphere cost, and it can be made preferably to complete to be engaged between spectrophotometer
Detect the effect of sample.
In a preference, the first attenuator is equal to enter without sample transmission or the sample light of reflection to the attenuation ratio of reference light
Enter the attenuation ratio that the inner surface of first integral ball carries out before and after diffusing reflection.
Because the integrating sphere after simplification is without detection circuit, when measuring, during reference light is not further into integrating sphere,
In order to ensure the accuracy of measurement result, it is necessary to reference light is decayed, so that itself and the decay for assuming to enter after integrating sphere
Ratio is identical, even if its decay with the sample light without sample transmission or reflection before and after diffusing reflection is carried out into integrating sphere
Ratio is identical, so that when the sample light when attenuation ratio of the first attenuator is reference light and blank sample carries out energy balance
The attenuation ratio of determination.
In another preference, the optical detection system based on integrating sphere also includes at least one speculum；Light path is detected first
On, sample light reaches sample after being reflected via speculum.
Sample light can be made to be focused at the sample of detection using speculum, energy loss is reduced.
In another preference, the optical detection system based on integrating sphere includes the first speculum and the second speculum, in the first inspection
On light-metering road, sample light reaches sample after being reflected via the first speculum and the second speculum successively.
Embodiments of the present invention also disclose a kind of optical detection system based on integrating sphere, it is characterised in that the second light splitting light
Degree meter, second integral ball and the second attenuator；
Second spectrophotometer includes the 3rd photodetector and the 4th photodetector；
Second integral ball scribbles the hollow spheres of diffuse-reflective material for inwall, and the second integral ball includes the 3rd smooth through hole, the 4th
Light through hole and the 5th smooth through hole；
In the 3rd detection light path of optical detection system, sample light passes sequentially through the 3rd smooth through hole and the 4th smooth through hole is passed straight through
Second integral ball reaches sample, enters in second integral ball after being reflected by sample, and unrestrained anti-by the inner surface of second integral ball
By the 5th smooth through hole outgoing and the 3rd photodetector of entrance after penetrating；In the 4th detection light path of optical detection system, reference light warp
Enter the 4th photodetector after being decayed by the second attenuator.
The signal detecting mode of existing integrating sphere product is improved, the spectrophotometer itself commonly used when being measured using integrating sphere
Signal detector, the reference light after detecting by the sample light of integrating sphere and being balanced through overdamping, so as to simplify fall integrating sphere
Itself original detection circuit, reduces integrating sphere cost, and it can be made preferably to complete to be engaged between spectrophotometer
Detect the effect of sample.
In a preference, in the 3rd detection light path, sample light enters second integral after being reflected by sample by the 4th smooth through hole
In ball.
In another preference, second integral ball includes the 6th smooth through hole；
In the 3rd detection light path, sample light is entered in second integral ball after being reflected by sample by the 6th smooth through hole.
In another preference, the second attenuator is equal to the sample light without sample reflection to the attenuation ratio of reference light and enters the
The inner surface of two integrating spheres carries out the attenuation ratio before and after diffusing reflection.
Because the integrating sphere after simplification is without detection circuit, when measuring, during reference light is not further into integrating sphere,
In order to ensure the accuracy of measurement result, it is necessary to reference light is decayed, so that itself and the decay for assuming to enter after integrating sphere
Ratio is identical, even if its decay with the sample light without sample transmission or reflection before and after diffusing reflection is carried out into integrating sphere
Ratio is identical, so that when the sample light when attenuation ratio of the second attenuator is reference light and blank sample carries out energy balance
The attenuation ratio of determination.
In another preference, the optical detection system based on integrating sphere also includes at least one speculum；Light path is detected the 3rd
On, sample light is entered in second integral ball after being reflected via speculum by the 3rd smooth through hole.
Sample light can be made to be focused at the sample of detection using speculum, energy loss is reduced.
In another preference, the optical detection system based on integrating sphere includes the 3rd speculum and the 4th speculum, in the 3rd inspection
On light-metering road, sample light enters second integral ball after being reflected via the 3rd speculum and the 4th speculum successively by the 3rd smooth through hole
It is interior.
Brief description of the drawings
Fig. 1 is the structural representation of the light measurement system based on integrating sphere in the prior art；
Fig. 2 is the structural representation of the light measurement system based on integrating sphere of first embodiment of the invention；
Fig. 3 is the structural representation of the light measurement system based on integrating sphere of second embodiment of the invention.
Specific embodiment
In the following description, in order that reader more fully understands the present invention and proposes many ins and outs.But, ability
Even if the those of ordinary skill in domain be appreciated that many variations without these ins and outs and based on following implementation method and
Modification, it is also possible to realize each claim technical scheme required for protection of the invention.
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiments of the present invention
It is described in further detail.In the record of the following drawings, same or similar reference indicates same or similar
Part and component, and be possible to omit the description.
First embodiment of the invention is related to a kind of optical detection system based on integrating sphere.Fig. 2 is the light that this is based on integrating sphere
The structural representation of detecting system.
Specifically, as shown in Fig. 2 the optical detection system that should be based on integrating sphere includes the first spectrophotometer, first integral
The attenuator 4 of ball 3 and first；First spectrophotometer includes the first photodetector 5 and the second photodetector 6；First integral
Ball 3 scribbles the hollow spheres of diffuse-reflective material (such as diffusive white reflective material magnesia or barium sulfate) for inwall, and this first
Integrating sphere includes the first smooth through hole and the second smooth through hole (not shown)；In the first detection light path of optical detection system, sample
Light A to be transmitted via sample 9 and enter the by the first smooth through hole of first integral ball 3 after (or reflection, reflected light path not shown)
In one integrating sphere, and by the second smooth through hole outgoing and enter the first photodetector after the inner surface diffusing reflection by first integral ball
5, in the specific implementation, can be by the second smooth through hole close proximity to the first photodetector 5, to increase the intensity of detection signal；
In second detection light path of optical detection system, reference light enters the second photodetector 6 after decaying via the first attenuator 4.The
One attenuator 4 is equal to the sample light A without sample transmission or reflection and enters in first integral ball to the attenuation ratio of reference light
Surface carries out the attenuation ratio before and after diffusing reflection.
Because the integrating sphere after simplification is without detection circuit, when measuring, during reference light is not further into integrating sphere,
In order to ensure the accuracy of measurement result, it is necessary to reference light is decayed, so that itself and the decay for assuming to enter after integrating sphere
Ratio is identical, even if its decay with the sample light without sample transmission or reflection before and after diffusing reflection is carried out into integrating sphere
Ratio is identical, so that when the sample light when attenuation ratio of the first attenuator is reference light and blank sample carries out energy balance
The attenuation ratio of determination.
Sample light can be made to be focused at the sample of detection using speculum, energy loss is reduced.Therefore, in a preference,
Optical detection system based on integrating sphere also includes at least one speculum；In the first detection light path, sample light is via speculum
Sample is reached after reflection.
The setting of speculum can as the case may be depending on, be not limited herein, for example, in a preference, such as Fig. 2 institutes
Show, the optical detection system based on integrating sphere includes the first speculum 1 and the second speculum 2, in the first detection light path, sample
Product light A reaches sample 9 after being reflected via the first speculum 1 and the second speculum 2 successively.
Furthermore, it is to be understood that in the embodiments of the present invention, light through hole is sample light or reference light turnover integrating sphere
Through hole, concrete shape is not limited.For example, it may be a window of single hole, or multiple aperture compositions.
The present invention improves the signal detecting mode of existing integrating sphere product, the spectrophotometer commonly used when being measured using integrating sphere
The signal detector of itself, the reference light after detecting by the sample light of integrating sphere and being balanced through overdamping, so as to simplify
The original detection circuit of integrating sphere itself, reduces integrating sphere cost, and it can be made preferably to complete and spectrophotometer between
It is engaged the effect of detection sample.
The specific detection process of the present embodiment is as follows：
When specifically used, first integral ball 3 is placed in spectrophotometer sample room, in the environment of complete shading, with declining
Subtract the sample signal and reference signal (i.e. sample light and reference light) under the balance blank sample state of device 4.Then test sample will be treated
Before product 9 are placed in the entrance of first integral ball 3 (the i.e. first smooth through hole), by the detector (i.e. first of spectrophotometer itself
Photodetector 5), the reference signal after detection sample signal, with balance is compared, and finally draws test data.
Second embodiment of the present invention discloses a kind of optical detection system based on integrating sphere.Fig. 3 is that this is based on integrating sphere
The structural representation of optical detection system.
Specifically, as shown in figure 3, the optical detection system that should be based on integrating sphere includes the second spectrophotometer, second integral
Ball 3 ' and the second attenuator 4 '；Second spectrophotometer includes the 3rd photodetector 5 ' and the 4th photodetector 6 '；Second integral
Ball 3 ' scribbles the hollow spheres of diffuse-reflective material for inwall, the second integral ball 3 ' include the 3rd smooth through hole, the 4th smooth through hole and
5th smooth through hole (not shown)；In the 3rd detection light path of optical detection system, sample light A ' passes sequentially through the 3rd smooth through hole
Second integral ball is passed straight through with the 4th smooth through hole reach sample 10, it is interior into second integral ball 3 ' after being reflected by sample 10,
And by the 5th smooth through hole outgoing and enter the 3rd photodetector 5 ' after the inner surface diffusing reflection by second integral ball 3 ', specific
During implementation, can be by the second smooth through hole close proximity to the 3rd photodetector 5 ', to increase the intensity of detection signal；Detected in light and be
In 4th detection light path of system, reference light enters the 4th photodetector 6 ' after decaying via the second attenuator 4 '.Second attenuator
4 ' are equal to before the sample light without sample reflection carries out diffusing reflection into the inner surface of second integral ball to the attenuation ratio of reference light
Attenuation ratio afterwards.
Because the integrating sphere after simplification is without detection circuit, when measuring, during reference light is not further into integrating sphere,
In order to ensure the accuracy of measurement result, it is necessary to reference light is decayed, so that itself and the decay for assuming to enter after integrating sphere
Ratio is identical, even if its decay with the sample light without sample transmission or reflection before and after diffusing reflection is carried out into integrating sphere
Ratio is identical, so that when the sample light when attenuation ratio of the second attenuator is reference light and blank sample carries out energy balance
The attenuation ratio of determination.
In the present invention, the sample light after being launched by sample 10 can back into second integral ball 3 ' by the 4th smooth through hole
It is interior, it is also possible to carry out diffusing reflection into second integral ball 3 ' is interior from other light through holes.For example, in a preference, the 3rd
In detection light path, sample light is entered in second integral ball after being reflected by sample by the 4th smooth through hole.And in another preference,
Second integral ball includes the 6th smooth through hole (not shown)；The 3rd detection light path on, sample light reflected by sample after by the 6th
Light through hole enters in second integral ball.
Sample light can be made to be focused at the sample of detection using speculum, energy loss is reduced.Therefore, in a preference,
Optical detection system based on integrating sphere also includes at least one speculum；In the 3rd detection light path, sample light is via speculum
Entered in second integral ball by the 3rd smooth through hole after reflection.
The setting of speculum can as the case may be depending on, be not limited herein, for example, in a preference, based on integration
The optical detection system of ball includes the 3rd speculum 1 ' and the 4th speculum 2 ', and in the 3rd detection light path, sample light A is passed through successively
It is interior into second integral ball 3 ' by the 3rd smooth through hole after being reflected by the 3rd speculum 1 ' and four speculum 2 '.
The signal detecting mode of existing integrating sphere product is improved, the spectrophotometer itself commonly used when being measured using integrating sphere
Signal detector, the reference light after detecting by the sample light of integrating sphere and being balanced through overdamping, so as to simplify fall integrating sphere
Itself original detection circuit, reduces integrating sphere cost, and it can be made preferably to complete to be engaged between spectrophotometer
Detect the effect of sample.
It should be noted that in the claim and specification of this patent, such as first and second or the like relational terms
It is used merely to make a distinction an entity or operation with another entity or operation, and not necessarily requires or imply these
There is any this actual relation or order between entity or operation.And, term " including ", "comprising" or its is any
Other variants are intended to including for nonexcludability, so that process, method, article including a series of key elements or setting
It is standby not only to include those key elements, but also other key elements including being not expressly set out, or also include for this process,
Method, article or the intrinsic key element of equipment.In the absence of more restrictions, limited by sentence " including "
Key element, it is not excluded that also there is other identical element in the process including the key element, method, article or equipment.
Although by referring to some of the preferred embodiment of the invention, being shown and described to the present invention, ability
The those of ordinary skill in domain should be understood that can to it, various changes can be made in the form and details, without departing from of the invention
Spirit and scope.
Claims (10)
1. a kind of optical detection system based on integrating sphere, it is characterised in that including the first spectrophotometer, first integral ball and
First attenuator；
First spectrophotometer includes the first photodetector and the second photodetector；
The first integral ball scribbles the hollow spheres of diffuse-reflective material for inwall, the first integral ball include the first smooth through hole and
Second smooth through hole；
The optical detection system first detection light path on, sample light via after sample transmission or reflection by the first integral
First smooth through hole of ball enters in the first integral ball, and by described after by the inner surface diffusing reflection of the first integral ball
Second smooth through hole outgoing simultaneously enters the first photodetector；The optical detection system second detection light path on, reference light via
Enter the second photodetector after the first attenuator decay.
2. the optical detection system of integrating sphere, attenuation ratio of first attenuator to reference light are based on as claimed in claim 1
Example carries out the attenuation ratio before and after diffusing reflection equal to the sample light without sample transmission or reflection into the inner surface of first integral ball
Example.
3. the optical detection system of integrating sphere is based on as claimed in claim 1 or 2, it is characterised in that also including at least one
Speculum；In the described first detection light path, the sample light reaches the sample after being reflected via the speculum.
4. the optical detection system based on integrating sphere as claimed in claim 3, it is characterised in that including the first speculum and the
Two-mirror, in the described first detection light path, the sample light is anti-via first speculum and the second speculum successively
The sample is reached after penetrating.
5. a kind of optical detection system based on integrating sphere, it is characterised in that including the second spectrophotometer, second integral ball and
Second attenuator；
Second spectrophotometer includes the 3rd photodetector and the 4th photodetector；
The second integral ball scribbles the hollow spheres of diffuse-reflective material for inwall, the second integral ball include the 3rd smooth through hole,
4th smooth through hole and the 5th smooth through hole；
In the 3rd detection light path of the optical detection system, sample light passes sequentially through the 3rd smooth through hole and the 4th smooth through hole
Pass straight through the second integral ball and reach sample, enter in the second integral ball after being reflected by the sample, and by institute
State after the inner surface diffusing reflection of second integral ball by the described 5th smooth through hole outgoing and enter the 3rd photodetector；In light inspection
In 4th detection light path of examining system, reference light enters the 4th photodetector after decaying via second attenuator.
6. the optical detection system of integrating sphere is based on as claimed in claim 5, it is characterised in that detect light path the described 3rd
On, the sample light is entered in the second integral ball after being reflected by the sample by the 4th smooth through hole.
7. the optical detection system of integrating sphere is based on as claimed in claim 5, it is characterised in that the second integral ball includes
6th smooth through hole；
In the described 3rd detection light path, the sample light enters described the after being reflected by the sample by the 6th smooth through hole
In two integrating spheres.
8. the optical detection system based on integrating sphere as any one of claim 5 to 7, it is characterised in that described
Two attenuators are equal to the sample light without sample reflection and are carried out into the inner surface of second integral ball to the attenuation ratio of reference light
Attenuation ratio before and after diffusing reflection.
9. the optical detection system based on integrating sphere as any one of claim 5 to 7, it is characterised in that also include
At least one speculum；The described 3rd detection light path on, the sample light via the speculum reflect after by the described 3rd
Light through hole enters in the second integral ball.
10. the optical detection system based on integrating sphere as claimed in claim 9, it is characterised in that including the 3rd speculum and
4th speculum, in the described 3rd detection light path, the sample light is successively via the 3rd speculum and the 4th speculum
Entered in the second integral ball by the 3rd smooth through hole after reflection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511026936.2A CN106932340B (en) | 2015-12-31 | 2015-12-31 | Light detection system based on integrating sphere |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511026936.2A CN106932340B (en) | 2015-12-31 | 2015-12-31 | Light detection system based on integrating sphere |
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| CN106932340B CN106932340B (en) | 2020-07-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109632270A (en) * | 2019-01-22 | 2019-04-16 | 莱茵技术（上海）有限公司 | A kind of bulb lamp optical security and integrated test system for performance |
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| JPH0415528A (en) * | 1990-05-10 | 1992-01-20 | Toshiba Corp | Laser light attenuating device |
| CN200972457Y (en) * | 2006-09-28 | 2007-11-07 | 朱安生 | Investigater for ultraviolet transmissivity |
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