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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

50mm Dia. Linear Polarizer (XP42-70)

Stock #19-942 In Stock
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Diameter (mm):
Extinction Ratio:
up to 9000:1 (nominal at 555nm)
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Polymer Film XP42-70
Operating Temperature (°C):
-10 to +60
Thickness (mm):
0.72 ±0.1
Transmission (%):
Single: 42 ±2
Parallel: 36.4
Crossed: <0.004 (nominal at 555nm)
Linear Polarizer
Dimensional Tolerance (mm):
Polarizing Film on PMMA
Polarization axis can be identified as follows:
Circular Parts - Parallel to direction of notch on polarizer
Square Parts - Parallel to mark on protective film
Rectangular Parts - Parallel to first listed dimension
Wavelength Range (nm):
400 - 700
Polarization Efficiency (%):
>99.98 (nominal at 555nm)
Transmission Variance after 1000 Hours (%):
Operating Humidity:
≤80% (no condensation)

Regulatory Compliance

RoHS 2015:
Certificate of Conformance:
Reach 235:

Product Family Description

  • High Transmission of Unpolarized Light from 400 – 700nm
  • Excellent Extinction Ratio of 9000:1
  • Available in Custom Sizes
  • High-Temperature Options Also Available

Ideal for a range of imaging applications, TECHSPEC® High Contrast Linear Polarizing Film (XP42) features an excellent extinction ratio and high transmission from 400 – 700nm. This polarizing film is offered in multiple thicknesses; thicker polarizing film has increased rigidity. Available in sheets, TECHSPEC® High Contrast Linear Polarizing Film (XP42) can be cut to fit any application need.

Note: Polarizer Film with adhesive available. 

Immediate Custom Quotes Available

If you have a need for any round, square, or rectangular size of a TECHSPEC High Contrast Linear Polarizing Film (XP42) in dimensions between 3mm and 600mm, please visit our Polarizing Film Tool.  We’ll provide an immediate quote, and can deliver the part to your requested size in approximately 3 weeks.  A full list of standard manufacturing tolerances and restrictions are listed.  For fully customized polymer polarizers to your requirements, visit our Customized Polymer Polarizers Capabilities page.