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CODIXX extends its assortment of standard AR (anti-reflection) - coatings for colorPol® polarizers.
The request for high end IR polarizers has been growing in the last years. For many IR applications high transmittance over a wide wavelength range is a central demand. While colorPol® polarizers feature a transmittance up to 91% (uncoated) in the IR range, the new wide band AR coating extents the transmittance to outstanding 95%-98% over the wavelength range of 1,200-2,500 nm.
This new coating completes the present standard AR (Anti Reflection) coating portfolio:
CW01 broadband coating 450 - 750 nm
CW02 broadband coating 600 - 1200 nm
CW03 broadband coating 550 - 850 nm
C355 V-coating for 355 nm
C633 V-coating for 633 nm
C1310 V-coating for 1310 nm
C1550 V-coating for 1550 nm
Because of the unique setup of the colorPol® polarizer, which is a thin glass plate with embedded silver nano particles, any coating can be applied to all polarizers of the colorPol® line. Even with coating the colorPol® polarizer can be processed like glass or semiconductor wafers. It is resistant to UV radiation, solvents and most acids and bases and complies with RoHS.
The unique CODIXX polarizer manufacturing capabilities opens the ability to produce patterned polarizers. These filters have variations of polarization for neighboring sub-sections within the cross-section of a single beam, producing either spatially or spectrally varying orientation of the polarization. Such patterned colorPol® polarizer can also include fully transparent or opaque regions.
Depending on the particular application, these polarizers are subject to specific requirements regarding spectral range, contrast ratio and transmittance, and additionally with regard to their geometrical form factor. At one extreme, the regional variation across the usable aperture of a polarizer can be down in the range of µm˛, while at the other extreme this may be as large as several cm˛. These parameters in turn define which pattern principle will be applied.
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