CN201429483Y - Optical glass stress measuring device - Google Patents
Optical glass stress measuring device Download PDFInfo
- Publication number
- CN201429483Y CN201429483Y CN200920305277XU CN200920305277U CN201429483Y CN 201429483 Y CN201429483 Y CN 201429483Y CN 200920305277X U CN200920305277X U CN 200920305277XU CN 200920305277 U CN200920305277 U CN 200920305277U CN 201429483 Y CN201429483 Y CN 201429483Y
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- stress
- optical glass
- measuring
- glass
- measuring device
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- Expired - Lifetime
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Abstract
The utility model relates to a measuring device which can measure the stress of a big block of optical glass, in particular to an optical glass stress measuring device which comprises a stress measuring instrument and a sample platform, wherein a measuring optical path of the device is vertical to the horizontal surface. Since the measuring optical path is vertical to the horizontal surface, glasssamples can be horizontally arranged on the sample platform, the mode has no limitation to the volume sizes of the glass samples, the stress of big block of glass samples can be extremely conveniently measured, the measuring device can move in a test cabinet, and the efficiency of measuring work is improved. The optical glass stress measuring device adopts the rotatable sample platform, and is more convenient when measuring different positions of optical glass.
Description
Technical field
The utility model relates to a kind of stress birefrin measurement mechanism that is used for bulk optical glass, particularly a kind of vertical optical glass stress birefringence measurement device.
Background technology
Optical glass is a kind of isotropic substance, if but glass has stress, will present anisotropy.Light can decompose little refractive index normal light (o light) and non-ordinary light (e light) two parts inequality after by the optical glass with internal stress.When light when the vertical optical axis direction is propagated, it is maximum that the speed of o light and e light differs, and after light has internal stress thickness to be the optical glass of d with this direction by one, can be expressed as by o light that stress birefrin produced and the optical path difference Δ between the e light: Δ=(n
o-n
e) * d.The internal stress of glass is big more, by the caused n of birefringence
oAnd n
eOptical glass differs just big more, so can be used up by the optical path difference between o light behind the glass and the e light about the quality index of stress intensity and represent.China's colouless optical glass national Specification, optical glass internal stress index, o light that is produced according to the optical glass birefringence of light by 1 cm thick and the optical path difference between the e light are represented, regulation in the standard GB/T 7962.5-1987 " colouless optical glass method of testing ", quarter-wave plate method polarisation stress ga(u)ge is adopted in stress measurement, the instrument index path as shown in Figure 1, light sends from light source 1, pass through diffusion optical filter 2 according to this, the polarizer 3, sample 4, λ/4 wave plates 5 and analyzer 6, this polarisation stress ga(u)ge has an optical path difference reading dial (scale value is consistent with the peak wavelength of optical filter) that links with analyzer 6, can directly read optical path difference on reading dial.
When adopting above-mentioned polarisation stress ga(u)ge to measure, sample and measuring stress instrument are laterally placed, and that is to say that the measurement light path is parallel with surface level, and this design is more convenient for daily test fritter sample, but is unfavorable for the measurement of structural glass.
The utility model content
Technical problem to be solved in the utility model provides a kind of measurement mechanism of stress of energy measurement bulk optical glass.
The technical scheme that the utility model technical solution problem is adopted is: the stress of optical glass device, comprise stress detector and sample stage, and the measurement light path of described device is perpendicular to surface level.
The beneficial effects of the utility model are: because measurement light path of the present utility model is perpendicular to surface level, therefore glass sample can lie in a horizontal plane on the sample stage, this modes of emplacement can be measured the stress of bulk optical glass sample to the volume size of glass sample without limits easily; Measurement mechanism can move in test cabinet, has improved the efficient of surveying work; The utility model adopts rotatable sample stage, and is when the diverse location of measuring optical glass, convenient.
Description of drawings
Fig. 1 is the index path of existing quarter-wave plate method polarisation stress ga(u)ge.
Fig. 2 is a device synoptic diagram of the present utility model.
Fig. 3 is a measurement index path of the present utility model.
Embodiment
As shown in Figure 2, the utility model is made up of stress detector and sample stage, the light source 1 of stress detector, diffusion optical filter 2, the polarizer 3, λ/4 wave plates 5, analyzer 6 and reading dial 10 all are installed on the steelframe 7, steelframe 7 is perpendicular to the ground, described stress detector is vertical structure, steelframe 7 bottoms are equipped with roller, can move freely in measuring chamber; Sample stage comprises disk 8 and base 9, and disk 8 is installed on the axis of base 9, and disk 8 is parallel to the ground, and disk 8 can in order to reduce friction, can be provided with rubber gasket 11 at the contact position of the axis on disk 8 and the base 9 around the axis rotation of base 9.Glass sample 4 is made into shapes such as rectangle or circle, and after smearing corresponding REFRACTIVE LIQUID on two inspection surfaces of glass sample 4, is positioned on the disk 8, by the technological procedure insulation.Device of the present utility model is vertically placed, and that is to say that the measuring principle of device of the present utility model is identical with Fig. 1, but measures light path perpendicular to surface level, as shown in Figure 3.
During measurement, promote vertical stress detector to sample stage, position as shown in Figure 2, rotating circular disk 8 is by the edge stress at " optical glass method of testing standard GB/T 7962.5-1987 " each position of tested glass.
Claims (4)
1. the stress of optical glass device comprises stress detector and sample stage, it is characterized in that: the measurement light path of described device is perpendicular to surface level.
2. stress of optical glass device as claimed in claim 1 is characterized in that: described sample stage comprises base (9) and is installed in disk (8) on the axis of base (9).
3. stress of optical glass device as claimed in claim 1, it is characterized in that: the light source of described stress detector (1), diffusion optical filter (2), the polarizer (3), λ/4 wave plates (5), analyzer (6) and reading dial (10) are installed on the steelframe (7), and described steelframe (7) is perpendicular to the ground.
4. stress of optical glass device as claimed in claim 1 is characterized in that, described steelframe (7) bottom is equipped with roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920305277XU CN201429483Y (en) | 2009-06-29 | 2009-06-29 | Optical glass stress measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920305277XU CN201429483Y (en) | 2009-06-29 | 2009-06-29 | Optical glass stress measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201429483Y true CN201429483Y (en) | 2010-03-24 |
Family
ID=42033222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920305277XU Expired - Lifetime CN201429483Y (en) | 2009-06-29 | 2009-06-29 | Optical glass stress measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201429483Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914396A (en) * | 2012-10-22 | 2013-02-06 | 中国科学院光电技术研究所 | Device and method for detecting stress of irregular surface optical glass material |
| CN103487180A (en) * | 2013-10-18 | 2014-01-01 | 苏州精创光学仪器有限公司 | Automatic glass stress detector |
| CN103644989A (en) * | 2013-12-13 | 2014-03-19 | 苏州精创光学仪器有限公司 | Photosensitive color method bench type stress meter |
| CN111562216A (en) * | 2020-05-12 | 2020-08-21 | 湖北新华光信息材料有限公司 | Device and method for testing stress photoelastic coefficient of infrared optical glass |
-
2009
- 2009-06-29 CN CN200920305277XU patent/CN201429483Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914396A (en) * | 2012-10-22 | 2013-02-06 | 中国科学院光电技术研究所 | Device and method for detecting stress of irregular surface optical glass material |
| CN103487180A (en) * | 2013-10-18 | 2014-01-01 | 苏州精创光学仪器有限公司 | Automatic glass stress detector |
| CN103644989A (en) * | 2013-12-13 | 2014-03-19 | 苏州精创光学仪器有限公司 | Photosensitive color method bench type stress meter |
| CN111562216A (en) * | 2020-05-12 | 2020-08-21 | 湖北新华光信息材料有限公司 | Device and method for testing stress photoelastic coefficient of infrared optical glass |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100324 |