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编号 :

WYL-4 Stress Birefringence Meter








  • Specification
  • Standard
  • Options
  • Features
  • Introduction and use
    • 商品名称: WYL-4 Stress Birefringence Meter
    project content
    instrument WYL-4 Stress Birefringence Meter
    Monochromatic light wavelength 589.44nm
    Optical path difference measurement range  ± 590 nm
    Scale value 5nm
    Minimum reading (1/5 estimated reading) 1nm
    Instrument zero error  ±2nm  
    Waveplate reading repeatability 1nm
    light source 220V 20W Low Pressure Sodium Lamp
    Maximum size of the sample to be inspected Width 440mm; Length 440mm; Height 240 mm
    Instrument size (mm) 413 ×250 ×400
  • Standard configuration items quantity
    host 1
    Instruction Manual 1
    Product Certificate of Conformity 1
    power cable 1
    Fuse (2A) 2 each
    Packing List 1
  • ★ Direct reading nanometer optical path difference, no need to calculate.
    ★ Double-divided field of view zero position detection, high sensitivity.
    ★ The sample table is automatically positioned at 45 degrees.  
    ★ Small size, compact structure.
    ★ Easy to operate and reliable.

  • Instrument introduction:
        Due to uneven cooling or other reasons such as mechanical action, transparent objects will generate internal stress and cause birefringence. The crystalline substance itself has the optical characteristic of birefringence. The WYL-4 stress birefringence instrument adopts the principle of polarization photoelectric vector synthesis and optical compensation, and determines the size of the stress birefringence of the sample by quantitatively measuring the optical path difference of the sample. This instrument can accurately measure the optical path difference of the optical wave plate and determine the stress level of the optical glass. It is an indispensable instrument in the optical instrument manufacturing industry and an important tool for the study of crystal minerals.

    Use of the instrument:
        A stress meter is an instrument used to check the magnitude and distribution of stress in a transparent object. It is not only widely used in optical glass, optical instruments, glass products, plastic products and other industries, but also plays an important role in the inspection of safety and explosion-proof indicators of building materials, lamps, pharmaceuticals, beverages, and handicrafts. There are also many applications in science. At the same time, this instrument is also an ideal teaching and experimental equipment for colleges and universities.