Patent No.: US 11,060,930 B2
Owner : Suzhou PTC Optical Instrument
As we known, a tempered glass is also called a reinforced glass. It is a kind of prestress glass . And it off- sets the surface stress when bearing an external force , thus , carrying capacity is improved . As a result , tempered glass is widely used in building door and windows , automobile door and windows , display industry and various electronic instruments. With the touch panel to achieve the application effect by the operation method that press external pressure to react the assembly,a mechanical anti-pressure becomes to be important regulations and index to major manufacturers .
In addition , although the bearing capacity has been improved after the glass is tempered . The stress is usually extremely uneven that will reduce the mechanical strength and thermal stability which will affect the safety and even lead to self-explosion . Especially with a flourish development of the touch industry , the mechanical anti-pressure becomes an important regulation and index for various manufacturers . Large stress influence the optical light transmission and imaging quality for optical glass seriously .
The invention of glass surface stress meter and multiple-tempered Surface Stress Meter solve the problem in the prior art that glass surface stress is hard to test .
When PTC’s present invention is used to test the multiple-tempered glass surface stress ,drop few refracting liquid on the refracting prism surface through the automatic dripping device, then place the measuring glass on the refracting prism .
10.09.2021, Suzhou PTC Optical Instrument
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