Polarizing stress instrument and its application

Saicheng polarizing stress instrument can detect the birefringence of transparent and weak color materials, and calculate the birefringence with the optical path error of no more than 10 nm through the park compensation method The distribution of birefringence is detected by polarized light The distribution and size of refractive index directly reflect the distribution and size of material stress Yly-h polarizing stress meter is mainly suitable for glass bottle factory, optical instrument factory, glass factory and laboratory to measure the stress value of optical glass, glass products and other optical materials Yly-h is a kind of instrument to check the internal stress of glass or the birefringence effect of crystal by the principle of polarized light interference The method of use is as follows: (1) remove the sensitive color plate, put one quarter wave plate into the field of view, adjust the zero point of the polarizing stress instrument, and make it appear dark field of view (2) Put the sample into the field of view, and observe the bottom from the mouth At this time, there will be a dark cross in the field of view If the stress of the sample is small, the dark cross will be blurred (3) Rotate the deflector to separate the dark cross into two arcs moving in the opposite direction As the dark area moves outward, blue gray appears on the concave side of the arc and brown appears on the convex side If the stress value of a selected point is measured, rotate the polarizing mirror until the blue gray of the point is just replaced by brown (4) Rotate the test object around the axis, find out the Zui high stress point, rotate the deflection mirror until the blue gray is replaced by the brown (5) record the rotation angle of the deflection mirror at this time, and measure the thickness of the point Because yly-h is equipped with sensitive color plate and 1 / 4 wave plate compensation method, the instrument can not only measure the internal stress of glass qualitatively or semi quantitatively according to the interference color sequence in polarization field, but also accurately measure the internal stress of glass container The above describes the use of the internal stress tester of Saicheng glass bottle About the causes and test details of the internal stress of medical glass bottles, Xiaobian wrote a "measurement of the internal stress of brown glass bottles" on saicheng.com If you need to know, please log in and click to check.