Suzhou PTC Optical Instrument Co Ltd

kunshan, Suzhou, United States

Polariscope is an optical instrument designed to observe stress presence and stress distribution state inside transparent materials .

Objects of Polariscopefloat glass plate, automotive glasscrystal , quartz , lens glassglass container , glass vial , water glassglass wafer , glass tube , laboratory glasswareresin plate , resin film , mold injection resin productsindustrial new material glass , optical new material glass

Measuring principleThe internal stress of glass and plastic products has a birefringent characteristic. In other words, if there is stress inside of these types of products, light from the polarized lamp will be divided into different units, which produces optical interference phenomenon(ripple patterns) in turn.

From the observation of colored patterns, you can see stress distribution directly, then evaluate and improve the annealing process.The inspection of plastic molds is more complex as the colored patterns caused by stress is irregular. A similar situation may occur with glass products, which is called stress stretching . For example, a qualified mold will have a large amount of stress released by tension.

Preform Strain Viewer ( Polariscope ) is an optical instrument designed to observe crystallization and other common defects which are invisible under natural light.

Residual stress in injection molding products can also detected .It has been widely used in the quality control of various plastic rough processing products and finished products .

Objects of PolariscopePET preformresin plate , resin film , mold injection resin products

Measuring principleThe internal stress of plastic products has a birefringent characteristic. In other words, if there is stress inside of these types of products, light from he polarized lamp will be divided into different units, which produces optical interference phenomenon (ripple patterns) in turn.

When the plastic preform is placed on the sample plate at 0or 90, the colored birefringent stripes at the edge of the preform can be observed;

When the plastic preform is placed on the sample plate at 45, black birefringence stripes in the central part of the preform will be displayed;

Polariscope is an optical instrument designed to observe stress presence, stress distribution state , measure temper grade and optical retardation caused by residual stress inside transparent materials .

Objects of Polariscopefloat glass plate, automotive glasscrystal , quartz , lens glassglass container , glass vial , water glassglass wafer , glass tube , laboratory glasswareresin plate , resin film , mold injection resin productsindustrial new material glass , optical new material glass

Measuring principleThe internal stress of glass and plastic products has a birefringent characteristic. In other words, if there is stress inside of these types of products, light from he polarized lamp will be divided into different units, which produces optical interference phenomenon(ripple patterns) in turn.

From the observation of colored patterns, you can see stress distribution directly, then evaluate and improve the annealing process.

Polariscope is an optical instrument designed to observe stress presence and stress distribution state inside transparent materials .

Objects of Polariscopefloat glass plate, automotive glasscrystal , quartz , lens glassglass container , glass vial , water glassglass wafer , glass tube , laboratory glasswareresin plate , resin film , mold injection resin productsindustrial new material glass , optical new material glass

Measuring principleThe internal stress of glass and plastic products has a birefringent characteristic. In other words, if there is stress inside of these types of products, light from the polarized lamp will be divided into different units, which produces optical interference phenomenon (ripple patterns) in turn.

From the observation of colored patterns, you can see stress distribution directly, then evaluate and improve the annealing process.

The inspection of plastic molds is more complex as the colored patterns caused by stress is irregular. A similar situation may occur with glass products, which is called stress stretching. For example, a qualified mold will have a large amount of stress released by tension.