CN1920534A - Method of measuring haze and apparatus thereof - Google Patents
Method of measuring haze and apparatus thereof Download PDFInfo
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- CN1920534A CN1920534A CNA2006101115686A CN200610111568A CN1920534A CN 1920534 A CN1920534 A CN 1920534A CN A2006101115686 A CNA2006101115686 A CN A2006101115686A CN 200610111568 A CN200610111568 A CN 200610111568A CN 1920534 A CN1920534 A CN 1920534A
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- sample
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- haze
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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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/59—Transmissivity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
-
- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
-
- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
Abstract
The present invention relates to a method of measuring haze including transmitting light, generated by a light source, through a sample; converting the light, transmitted through the sample, into parallel light through a null lens; and separating the light, transmitted through the null lens, into parallel light and diffused light through an integrating sphere and then measuring haze.
Description
The cross reference of related application
The application requires the right of priority of the korean patent application submitted in Korea S Department of Intellectual Property on August 23rd, 2005 2005-0077094 number, and its full content is hereby expressly incorporated by reference.
Technical field
The present invention relates to mist degree (haze) measuring method and device thereof.In this method of measuring haze, only can measure the mist degree characteristic of the band curved surface sample of estimating with naked eyes quantitatively.
Background technology
Usually, haze measurement device is used to measure light () transmittance for example, glass and plastics is as haze value with respect to transparent material.The measurement transmission is crossed such as the light quantity of materials such as clear glass, plastics, film and has been made regulation by ISO as the device or the method for haze value.' ISO 7105: the method for testing of plastic optics characteristic ', ' ISO14782: the method for measuring haze of plastic transparent material ' etc. for example, are provided.
But the mist degree on traditional haze measurement device measurement plane sample, but can't measure mist degree on the sample with curved surface.Therefore, in correlation technique, can only estimate with the mist degree on the curved surface sample by naked eyes all the time,, can't satisfy the accuracy and the repeatability of measurement owing to the error that survey crew causes.
Subsequently, study method of measuring haze with reference to the accompanying drawings, and describe the problem of its existence according to correlation technique.
Figure 1A and Figure 1B are the diagrammatic sketch that is used to explain according to the method for measuring haze of correlation technique.Figure 1A is the diagrammatic sketch that the measuring method of the total transmitted light that passes sample is described, Figure 1B is the diagrammatic sketch that the measuring method of the scattered light that passes sample is described.
Shown in Figure 1A and Figure 1B, traditional haze measurement device is provided with: light source 1 is used to produce light; Sample 2 receives the light that produces from light source 1; And integrating sphere 3, be used to detect the light that sample 2 is crossed in transmission, to measure mist degree.
The light that is produced by light source 1 passes sample 2 and is divided into directional light PT and scattered light DT, incides then on the integrating sphere 3.At this moment, directional light PT and scattered light DT that integrating sphere 3 detects by sample 2 incidents are to measure mist degree.
Shown in following expression formula 1, represent to be used to calculate the expression formula of mist degree by directional light (total transmitted light) PT and the ratio of scattered light DT.
[expression formula 1]
Therefore, if can know the ratio of directional light PT and scattered light DT, just can record mist degree by expression formula 1.
Shown in Figure 1A, use the first sensor 4a among the second opening 3b that is installed in integrating sphere 3 to measure the directional light PT that sample 2 is crossed in transmission.Shown in Figure 1B, use the second sensor 4b among the 3rd opening 3c that is installed in integrating sphere 3 to measure the scattered light DT that sample 2 is crossed in transmission.Stipulated to be used to measure the standard of mist degree among the ISO FDIS 14782.
Fig. 2 A and Fig. 2 B be used to explain according to correlation technique at sample with plane and diagrammatic sketch with the method for measuring haze on the sample of curved surface.
Shown in Fig. 2 A is the method for measuring haze with the sample 2a on plane.Shown in Fig. 2 A, the light that the sample 2a with plane is crossed in transmission is divided into directional light PT and scattered light DT, incides then on the integrating sphere 3.Therefore, if know the ratio of directional light PT and scattered light DT, just can calculate mist degree by expression formula 1.At this moment, as mentioned above, can be by being arranged on the ratio that the first and second sensor 4a in the integrating sphere 3 and 4b detect directional light PT and scattered light DT.
Being to use shown in Fig. 2 B has the situation of the sample 2b measurement mist degree of curved surface.Under the situation of the sample 2b with curved surface, be refracted from the light of light source 1 incident, thereby when the sample 2b with curved surface is crossed in transmission, assembled or dispersed.Therefore, have only converging light or diverging light to incide integrating sphere 3 by sample 2b with curved surface.Thus, under the situation of the sample 2b with curved surface, the light that the sample 2b with curved surface is crossed in transmission is assembled or is dispersed, and makes and can't accurately detect directional light PT and scattered light DT, can not measure mist degree.
Thereby (for example, film) mist degree can't accurately be measured the mist degree on the sample (lens) with curved surface, and this is because the light that incides on the integrating sphere is refracted although can measure the sample with plane with traditional method of measuring haze and device.
Summary of the invention
Advantage of the present invention is to provide a kind of method of measuring haze and device thereof, wherein, between sample with curved surface and integrating sphere, increase null lens, be not refracted thereby incide the integrating sphere glazing by sample, thereby no matter the shape of sample how, can accurately be measured mist degree.
Other aspects and the advantage of the inventive concept that the present invention is total will partly be set forth in explanation subsequently, and partly will obviously or by the enforcement of total inventive concept be understood from this explanation.
According to an aspect of the present invention, method of measuring haze comprises: will cross sample by the transmittance that light source produces; The light of sample being crossed in transmission by null lens is converted to directional light; And the light of null lens being crossed in transmission by integrating sphere (integrating sphere) is divided into directional light and scattered light, measures mist degree then.
According to a further aspect in the invention, obtain mist degree by following expression formula:
According to another aspect of the invention, the sensor of installing in the opening that on the directional light incident direction, forms of directional light by integrating sphere.
In accordance with a further aspect of the present invention, scattered light by integrating sphere with the direction of directional light incident direction quadrature on the sensor of installing in the opening that forms.
In accordance with a further aspect of the present invention, any one in use transparent flat sample, glass lens, plastic lens and the liquid lens is as sample.
In accordance with a further aspect of the present invention, sample is the sample with curved surface.
In accordance with a further aspect of the present invention, the sample with curved surface is concavees lens.
In accordance with a further aspect of the present invention, the sample with curved surface is convex lens.
In accordance with a further aspect of the present invention, haze measurement device comprises: light source is used to produce light; Sample is used for receiving light and transmitted light from light source; Integrating sphere is used to detect the light that sample is crossed in transmission, thereby measures mist degree; And null lens, place between sample and the integrating sphere, and will convert directional light to by the light that sample incides on the integrating sphere.
In accordance with a further aspect of the present invention, sample is any one in transparent flat sample, glass lens, plastic lens and the liquid lens.
In accordance with a further aspect of the present invention, sample is the sample with curved surface.
In accordance with a further aspect of the present invention, the sample with curved surface is concavees lens.
In accordance with a further aspect of the present invention, the sample with curved surface is convex lens.
In accordance with a further aspect of the present invention, integrating sphere comprises: first opening is used to receive the light that sample is crossed in transmission; Second opening is formed on the position relative with first opening; The 3rd opening is formed on the direction with the first and second opening quadratures; First sensor is installed in second opening, is used for measuring the directional light that the light of sample is crossed in transmission; And second sensor, be installed in the 3rd opening, be used for measuring the scattered light that the light of sample is crossed in transmission.
Therefore, in the present invention, can use null lens or liquid lens accurately to measure mist degree, and no matter the shape of sample how.
Description of drawings
The various aspects of overall thought of the present invention and advantage will be by becoming apparent below in conjunction with the description of accompanying drawing to embodiment, and are easier to understand, wherein:
Figure 1A and Figure 1B are the diagrammatic sketch that is used to explain according to the method for measuring haze of correlation technique, and Figure 1A is the diagrammatic sketch that the measuring method of the total transmitted light that passes sample is described, Figure 1B is the diagrammatic sketch that the measuring method of the scattered light that passes sample is described;
Fig. 2 A and Fig. 2 B be used to explain according to correlation technique at sample with plane and diagrammatic sketch with the method for measuring haze on the sample of curved surface;
Fig. 3 and Fig. 4 are the diagrammatic sketch that is used to explain according to method of measuring haze of the present invention, and Fig. 3 is the diagrammatic sketch that the measuring method of the total transmitted light that passes sample is described, and Fig. 4 is the diagrammatic sketch that the measuring method of the scattered light that passes sample is described; And
Fig. 5 and Fig. 6 are the diagrammatic sketch that is used to explain according to another method of measuring haze of the present invention, Fig. 5 is the diagrammatic sketch that the method for the total transmitted light that uses the liquid lens measurement to pass sample is described, and Fig. 6 is the diagrammatic sketch that the method for the scattered light that uses the liquid lens measurement to pass sample is described.
Embodiment
Now, with reference to the embodiment of overall thought of the present invention, the example is shown in the drawings with at length, and wherein, identical reference number is represented components identical all the time.Below, explain overall thought of the present invention by describing embodiment with reference to the accompanying drawings.
Below, the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 3 and Fig. 4 are the diagrammatic sketch that is used to explain according to method of measuring haze of the present invention.Fig. 3 is the diagrammatic sketch that the measuring method of the total transmitted light that passes sample is described, Fig. 4 is the diagrammatic sketch that the measuring method of the scattered light that passes sample is described.
As shown in Figure 3 and Figure 4, haze measurement device according to the present invention comprises: light source 10 is used to produce light; Sample 20 with curved surface, the light that is produced by light source 10 incides on it; Null lens 50 is used to receive from the light of sample 20 outputs, and converts light to directional light and export; And integrating sphere 30, be used to receive directional light from null lens 50 outputs, directional light is divided into directional light PT and scattered light DT, detect directional light PT and scattered light DT then, to measure mist degree through separating.
The sample with curved surface 20 as being made by transparent material can comprise glass or plastics, glass lens, plastic lens, liquid lens etc.In the present invention, the sample that has the sample on plane and have a curved surface can be used as the measurement mist degree, and also can use and have other difform samples.
The convergence of the sample 20 of the light that is produced by light source 10 by having curved surface and dispersing reflects.In addition, the light that reflects by the sample 20 with curved surface converts directional light to by null lens 50, and incides on the first opening 30a of integrating sphere 30 by the directional light of null lens 50 outputs, to be divided into directional light PT and scattered light DT.Thus, integrating sphere 30 detects directional light PT and the scattered light DT that incides on it, to measure mist degree.
In this case, as shown in following expression formula 2, represent to be used to calculate the expression formula of mist degree by directional light PT and the ratio of scattered light DT, this is identical with correlation technique.
[expression formula 2]
Therefore, if the ratio of known directional light PT and scattered light DT just can be measured mist degrees by expression formula 2.
As shown in Figure 3, use the first sensor 40a measurement among the second opening 3b that is installed in integrating sphere 30 to pass total transmitted light (or directional light) PT of the first opening 30a incident of integrating sphere 30.As shown in Figure 4, use the second sensor 40b measurement among the 3rd opening 3c that is installed in integrating sphere 30 to pass the scattered light DT of the first opening 30a incident of integrating sphere 30.As mentioned above, stipulated to be used to measure the standard of mist degree among the ISO FDIS 14782.
In the present invention, be sample although want the sample of measured mist degree with curved surface, use null lens just can accurately measure mist degree.That is, although the light that is produced by light source can be had the sample refraction of curved surface, the light of sample refraction that will be by having curved surface by null lens converts directional light to, just can measure mist degree.Directional light by null lens output is divided into directional light PT and scattered light DT when the first opening incident by integrating sphere.Therefore, as mentioned above, when detecting at integrating sphere 30 inner separated directional light PT and scattered light DT, can measure mist degree at an easy rate by expression formula 2 by the first and second sensor 40a and 40b.
Thus, in the present invention, can be accurately to having the sample measurement mist degree of appointing any shape.
Next, Fig. 5 and Fig. 6 are the diagrammatic sketch that is used to explain according to another method of measuring haze of the present invention.Fig. 5 is the diagrammatic sketch that the method for the total transmitted light that uses the liquid lens measurement to pass sample is described, and Fig. 6 is the diagrammatic sketch that the method for the scattered light that uses the liquid lens measurement to pass sample is described.
As shown in Figure 5 and Figure 6, haze measurement device according to the present invention comprises: light source 10 is used to produce light; Sample 20 with curved surface, the light that is produced by light source 10 incides on it; Liquid lens 60 is used to receive from the light of sample 20 outputs, and converts light to directional light and export; And integrating sphere 30, be used to receive directional light from liquid lens 60 outputs, directional light is divided into directional light PT and scattered light DT, detect directional light PT and scattered light DT then, to measure mist degree through separating.
Liquid lens 60 is used for and will assembles on the sample 20 with curved surface and convert directional light to and export from the light that it is dispersed.In addition, type per sample, liquid lens 60 changes the voltage that is applied, and with change curvature, thereby changes focal length.That is, only by regulating the voltage that is applied simply, liquid lens 60 just can change focal length, and need not focus material change position per sample.Therefore, when the light that reflects in sample passes liquid lens 60, and no matter sample type how, the voltage liquid lens 60 that passes through to be applied just can change focal length, thus the light that will incide on the integrating sphere 30 converts directional light to.
In the present invention, be sample (for example, lens) although want the sample of measured mist degree with curved surface, use liquid lens just can accurately measure mist degree.That is, although the light that is produced by light source is had the sample refraction of curved surface, the light of sample refraction that will be by having curved surface by liquid lens 60 converts directional light to, just can measure mist degree.Directional light by liquid lens 60 output is divided into directional light PT and scattered light DT when the first opening incident by integrating sphere.Therefore, as mentioned above, when detecting at integrating sphere 30 inner separated directional light PT and scattered light DT, can measure mist degree at an easy rate by expression formula 2 by the first and second sensor 40a and 40b.
In the present invention, the light that will reflect in the sample collimator (collimator) that converts directional light to can be replaced by liquid lens 60.Therefore, no matter when the type of sample changes, and does not need to change collimator.That is, if change the voltage that is applied per sample, then the curvature of liquid lens also changes, to change focal length.Therefore, collimator does not need to change per sample.
Thus, in the present invention, can accurately measure mist degree about sample with arbitrary shape.In addition, can only use liquid lens to measure the mist degree of all samples, and need not change collimator per sample.
According to method of measuring haze and device thereof, between sample with curved surface and integrating sphere, increase null lens or liquid lens, make the light that incides on the integrating sphere by sample can not be refracted, thereby, no matter the shape of sample how, can measure and estimate mist degree quantitatively.
Therefore, can estimate the white mist degree of injection plastic lens, and the estimation base standardization of the mist degree that can't observe with the naked eye.
In addition, change the voltage that is applied per sample, change focal length by using liquid lens.Therefore, no matter when the type of sample changes, and does not need to change collimator.
In addition, when estimating liquid lens, can measure mist degree in real time to each voltage.
In addition, can measure the mist degree of liquid liquid lens (forming) by liquid.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (20)
1. method of measuring haze comprises:
To cross sample by the transmittance that light source produces;
The described light of described sample being crossed in transmission by null lens is converted to directional light;
And
The described light of described null lens being crossed in transmission by integrating sphere is divided into directional light and scattered light, measures mist degree then.
2. method of measuring haze according to claim 1,
Wherein, obtain described mist degree by following expression formula:
3. method of measuring haze according to claim 2,
Wherein, the sensor of installing in the opening that described directional light forms on described directional light incident direction by described integrating sphere.
4. method of measuring haze according to claim 2,
Wherein, described scattered light by described integrating sphere with the direction of described directional light incident direction quadrature on the sensor of installing in the opening that forms.
5. method of measuring haze according to claim 1,
Wherein, any one in use transparent flat sample, glass lens, plastic lens and the liquid lens is as described sample.
6. method of measuring haze according to claim 1,
Wherein, described sample is the sample with curved surface.
7. method of measuring haze according to claim 6,
Wherein, described sample with curved surface is concavees lens.
8. method of measuring haze according to claim 6,
Wherein, described sample with curved surface is convex lens.
9. haze measurement device comprises:
Light source is used to produce light;
Sample is used for receiving described light from described light source, and the described light of transmission;
Integrating sphere is used to detect the described light that described sample is crossed in transmission, to measure mist degree; And
Null lens places between described sample and the described integrating sphere, and will convert directional light to by the described light that described sample incides on the described integrating sphere.
10. haze measurement device according to claim 9,
Wherein, described sample is any one in transparent flat sample, glass lens, plastic lens and the liquid lens.
11. haze measurement device according to claim 9,
Wherein, described sample is the sample with curved surface.
12. haze measurement device according to claim 11,
Wherein, described sample with curved surface is concavees lens.
13. haze measurement device according to claim 11,
Wherein, described sample with curved surface is convex lens.
14. haze measurement device according to claim 9,
Wherein, described integrating sphere comprises:
First opening is used to receive the described light that described sample is crossed in transmission;
Second opening is formed on and the relative position of described first opening;
The 3rd opening, with the direction of the described first and second opening quadratures on form;
First sensor is installed in described second opening, to measure the directional light in the described light that transmission crosses described sample; And
Second sensor is installed in described the 3rd opening, to measure the scattered light in the described light that transmission crosses described sample.
15. a haze measurement device comprises:
Light source is used to produce light;
Sample is used for receiving described light from light source, and the described light of transmission;
Integrating sphere is used to detect the described light that described sample is crossed in transmission, to measure mist degree; And
Liquid lens places between described sample and the described integrating sphere, and will convert directional light to by the described light that described sample incides on the described integrating sphere.
16. haze measurement device according to claim 15,
Wherein, in described liquid lens, the voltage that type change applied per sample, and according to the curvature that changes described sample through the voltage that changes, thereby the change focal length.
17. haze measurement device according to claim 15,
Wherein, described sample is any one in transparent flat sample, glass lens, plastic lens and the liquid lens.
18. haze measurement device according to claim 15,
Wherein, described sample is the sample with curved surface.
19. haze measurement device according to claim 18,
Wherein, described sample with curved surface is concavees lens.
20. haze measurement device according to claim 18,
Wherein, described sample with curved surface is convex lens.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050077098 | 2005-08-23 | ||
| KR1020050077094A KR100675216B1 (en) | 2005-08-23 | 2005-08-23 | Method of measuring haze and apparatus thereof |
| KR1020050077094 | 2005-08-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1920534A true CN1920534A (en) | 2007-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101115686A Pending CN1920534A (en) | 2005-08-23 | 2006-08-23 | Method of measuring haze and apparatus thereof |
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| Country | Link |
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| KR (1) | KR100675216B1 (en) |
| CN (1) | CN1920534A (en) |
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| CN101839802A (en) * | 2010-05-21 | 2010-09-22 | 西安工业大学 | Laser integral scattered power multi-angle comprehensive measurement device for high reflector |
| CN101893479A (en) * | 2009-05-22 | 2010-11-24 | 大*电子株式会社 | Total light flux measurement mechanism and total light flux measuring method |
| CN102235974A (en) * | 2010-04-20 | 2011-11-09 | 中国科学院上海硅酸盐研究所 | Device and method for testing full penetration rate of transparent ceramic bulk material |
| CN102305760A (en) * | 2011-05-23 | 2012-01-04 | 成都光明光电股份有限公司 | Device and method for testing corrosion resistance of optical glass |
| CN102422148A (en) * | 2009-03-09 | 2012-04-18 | 霍尼韦尔国际公司 | Apparatus and method for measuring haze of sheet materials or other materials |
| CN102519915A (en) * | 2011-12-28 | 2012-06-27 | 北京奥博泰科技有限公司 | Spectral measuring device and method for spectral haze of photovoltaic glass |
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2005
- 2005-08-23 KR KR1020050077094A patent/KR100675216B1/en not_active IP Right Cessation
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2006
- 2006-08-23 CN CNA2006101115686A patent/CN1920534A/en active Pending
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| CN101893479A (en) * | 2009-05-22 | 2010-11-24 | 大*电子株式会社 | Total light flux measurement mechanism and total light flux measuring method |
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| CN102235974B (en) * | 2010-04-20 | 2013-08-14 | 中国科学院上海硅酸盐研究所 | Device and method for testing full penetration rate of transparent ceramic bulk material |
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| CN102305760B (en) * | 2011-05-23 | 2013-10-02 | 成都光明光电股份有限公司 | Device and method for testing corrosion resistance of optical glass |
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| CN103994954B (en) * | 2014-05-13 | 2016-08-24 | 中国科学技术大学先进技术研究院 | A kind of haze measuring instrument |
| CN107615468A (en) * | 2015-05-13 | 2018-01-19 | 信越半导体株式会社 | The evaluation method of mist degree |
| CN107037005A (en) * | 2015-10-19 | 2017-08-11 | 霍尼韦尔国际公司 | For the apparatus and method for the turbidity that sheeting or other materials are measured using off-axis detector |
| CN106770050A (en) * | 2016-12-31 | 2017-05-31 | 上海复展智能科技股份有限公司 | Liquid spectral transmission and scattering coefficient measurement apparatus based on integrating sphere |
| CN106770050B (en) * | 2016-12-31 | 2023-08-11 | 上海复展智能科技股份有限公司 | Liquid spectrum transmission and scattering coefficient measuring device based on integrating sphere |
| CN111239066A (en) * | 2020-02-26 | 2020-06-05 | 深圳市杰普特光电股份有限公司 | Optical test system |
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| KR100675216B1 (en) | 2007-01-29 |
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