The manual quantitative stress meter PSV-413 developed and produced by Suzhou PTC Optical Instrument Co., Ltd.，it is an instrument that applies the principle of polarized light interference to examine the...
The birefringence effect caused by the internal stress of optical components will affect the polarization state of light, which can not be tolerated in micro-lithography, laser optics and astronomy. I...
The important national standard in the field of infant products safety, Bottles and Nipples for Infants and Young Children (GB 38995-2020), was implemented on November 1, 2021. The standard is based o...
The composition of Sapphire is Aluminum Oxide (Al2O3), and its crystal structure is a hexahedral lattice structure. C-plane is the most commonly used sapphire substrate. Due to its wide optical penetr...
Precision thermoforming of optical glass lenses has been an advanced process. It has the advantages of one-shot molding, high efficiency and low cost, suitable for large-scale production of glass lens...
During the assembly process of the optical lens, when the lens is fixed by the fixing component, poor fixing often occurs, resulting in residual stress and poor optical imaging and changes in optical ...
1 Qualitative and semi-quantitative stress measurement methodsThe method of observing residual stress in glass by orthogonal polarized light is well known, and it is widely used to determine the stres...
Controlling glass stress is an extremely important part of the glass production process, and the application of appropriate heat treatment to control stress is well known to glass technicians. However...
Stress meter is used to measure the birefringence of transparent objects due to internal stress. This Internal stress is caused by the uneven cooling of the object or other reasons (such as mechanical...
Colored glaze is made of artificial crystals (containing 24% lead dioxide) of various colors (the colors are produced by various metal elements) as raw materials and fired at a high temperature of mor...
PMMA is a polymer obtained by the polymerization of acrylic acid and its esters, which is collectively referred to as acrylic resin, and the corresponding plastics are collectively referred to as poly...
The alignment film angle measuring instrument independently developed, designed and produced by PTC Optical Instrument has been successfully launched.By manually rotating a stage with a dial, the devi...
Glass art is an art with glass as a carrier. Glass is a material that can be made into various shapes, and can be applied with any colour. It can also be processed and etched by various cutting, grind...
DefinitionStress birefringence is also known as the photoelastic effect. Under the action of pressure or tension, the refractive index of transparent isotropic media will change, thus showing optical ...
The glass polarimeter is named after the application of polarized light interference principle to check the internal stress of glass. It is specially used for quality control of glass bottles by detec...
