CN1107230A - Screen net structure fog degree test sample - Google Patents
Screen net structure fog degree test sample Download PDFInfo
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- CN1107230A CN1107230A CN 94117721 CN94117721A CN1107230A CN 1107230 A CN1107230 A CN 1107230A CN 94117721 CN94117721 CN 94117721 CN 94117721 A CN94117721 A CN 94117721A CN 1107230 A CN1107230 A CN 1107230A
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- test sample
- fog degree
- sample
- degree test
- silk screen
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Abstract
The present invention relates to the screen structure fog degree sample used for correcting the fog degree measurer in the optical meaurement. It is not made from the traditionally consistently used macroscopic uniform material but made from macroseopic non uniform material including metal silk screen and non metal silk screen, the mesh number is 30-300. It over comes the shortage of the traditional ample easy affecting by environmental factors, meanmeanwhile it also has the advantages of simple manufacturing process, convenient for cleaning, not easy damaging the sample, widespread raw material sources and low cost.
Description
The present invention relates to the fog degree test sample of the screen net structure that the correction haze measurement device is used in the optical measurement.
Mist degree is a kind of important optical property of transparent material.When light sees through transparent material, because the reason that the transparent material inner structure is formed, or because of the not bright and clean smooth reason of rough surface, the light that makes a part see through transparent material departs from incident direction, scattering takes place, be exactly, generally use following formulate Zong it departs from the incident direction angle greater than 2.5 ° the transmission light quantity and the number percent mist degree (H) of transmission light quantity:
H＝ (T
4-T
3)/(T
2-T
1)
Wherein: T
1Be total incident ray;
T
2Be total projection light quantity;
T
3For spilling in the incident light quantity penetrated light quantity (departing from the light quantity of incident direction more than 2.5 °);
T
4Be the diffusing projection light quantity (departing from the light quantity of incident direction more than 2.5 °) in total projection light quantity.
The haze value of transparent material is generally at 0-30%.
In order to satisfy the needs that mist degree is measured, producer makes, has sold the haze meter of different model, or claims mist degree instrument, haze measurement device.When the mist degree of each measurement transparent material, at first to use fixing fog degree test sample correcting measuring device.Requirement to fog degree test sample is that its haze value should be changeless, could correctly be used for proofreading and correct the mist degree proving installation like this.If variation has taken place haze value, sample still can return to raw value through its haze value after certain processing.Existing fog degree test sample all is to be developed into according to traditional design philosophy, promptly requires fog degree test sample in the projection light properties, is isotropic as far as possible, is uniform at least on macroscopic view.Aspect selection, generally all be with inorganic material (as glass) or organic material, have certain thickness, on the macroscopic view even and transparent flat board.Since strict to inhomogeneity requirement, also just make its complex manufacturing technologyization, the cost height.The diffuse transmission light property of sample also is subject to the influence of external factor in addition, and its projection performance of loosing will change when having adhered to foreign material such as dust, greasy dirt, fiber fine, soft fur as specimen surface, and haze value will depart from its original value.Cleaning after fog degree test sample pollutes is also pretty troublesome, and may form cut when the wiping sample on sample, so that fog degree test sample is subjected to damage in various degree, and therefore the haze value of sample also can change.
Purpose of the present invention is exactly to develop the stable sample of a kind of haze value, and manufacture craft is simple, and cost is low, scrubbing easily.
Fog degree test sample of the present invention is suspended in to be developed on the basis that has broken away from traditional design philosophy, has selected for use macroscopically unevenly, and light had the material of the silk screen of projection as fog degree test sample.Silk screen is to weave into the net with certain order number with the filament of a certain material, because be reticulate texture, light can see through by mesh, when being mapped to, light just produces scattering when thread last, so having formed a part of light passes through by former incident direction, another part light then departs from incident direction and forms certain fleet angle and pass through, and this has just produced diffusing projection.Its haze value of fog degree test sample made from this material is not subject to the extraneous factor influence, in case sample is contaminated, cleaning method is also simpler, and can not damage sample itself, and the haze value of sample just can not change yet.
To uniform fog degree test sample (prior art) B on the macroscopic view
3#With uneven fog degree test sample (the technology of the present invention) B on the macroscopic view of screen net structure
4#Made contrast test, front and back one month mist degree measurement result at interval are listed in the table below:
Haze value H (%) rate of change of original haze value H (%) after one month
B
3#17.51 17.94 2.5%
B
4#27.63 27.75 0.4%
Find out that from table after being separated by one month, extraneous factors such as dust make B
3#The haze value of sample has increased 2.5%, and B
4#The haze value of sample has only changed 0.4%, B
3#Rate of change exceeded the measuring error scope, and B
4#Rate of change in the measuring error allowed band.
Sample of the present invention is wider to the range of choice of silk screen.Can be wire gauze, as stainless steel cloth, copper mesh etc. also can be non-wire gauzes, as nylon mesh, the tygon silk screen of organic material, the glass fiber of inorganic material etc.The mesh number of silk screen can be from the 30-300 order.
Sample of the present invention can be embedded in a certain size silk screen on the suitable framework and promptly can be made into.The haze measurement device of shape and structure and use adapts.
The embodiment of sample of the present invention is as follows:
1.40 the fog degree test sample that the order stainless steel cloth is made, its haze value H is～5.58%;
2.60 the fog degree test sample that the order stainless steel cloth is made, its haze value H is～9.76%;
3.50 the fog degree test sample that the order brass wire mesh is made, its haze value H is～7.86%;
4.60 the fog degree test sample that the order nylon mesh is made, its haze value H is～27.70%;
5.30 the fog degree test sample that order tygon silk screen is made, its haze value H is～30.83%.
Fog degree test sample of the present invention has following advantage: haze value stability is high, is the ideal sample material of proofreading and correct the mist degree testing arrangement, and wide material sources need not carry out special processing, processes easyly, and easy to clean can not damaged sample, and cost is low.
Claims (3)
1, the fog degree test sample of screen net structure is characterized in that having silk screen and framework.
2, screen net structure fog degree test sample according to claim 1 is characterized in that silk screen is made of wire gauze or nonmetal silk screen.
3, screen net structure fog degree test sample according to claim 1, the mesh number that it is characterized in that silk screen is the 30-300 order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94117721 CN1107230A (en) | 1994-11-08 | 1994-11-08 | Screen net structure fog degree test sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94117721 CN1107230A (en) | 1994-11-08 | 1994-11-08 | Screen net structure fog degree test sample |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1107230A true CN1107230A (en) | 1995-08-23 |
Family
ID=5038502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94117721 Pending CN1107230A (en) | 1994-11-08 | 1994-11-08 | Screen net structure fog degree test sample |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1107230A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
1994
- 1994-11-08 CN CN 94117721 patent/CN1107230A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102519915B (en) * | 2011-12-28 | 2014-05-07 | 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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