Optical Window with anti-reflection coating / WBMA-40C04-10-IR2

These optical windows have high-quality and may be used when light is passed through the opposite side of the partition or in the vacuum chamber. Since the windows have anti-reflection coatings the transmittance is increased so they can be used as a window for laser irradiation windows and the observation of the sample.

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Part Number
WBMA-40C04-10-IR2
¥14,400
◦By anti-reflection coating with a dielectric multi-layer, it is reduced to less than 1% to 4% reflection loss of the glass surface.
◦Since we are using the high quality material, the image will not be distorted by the transmission of the glass, and the laser beam is not diffused.
◦When you insert an window perpendicular to the optical path of the laser, the angle of the transmitted beam will not be changed.
More Information
Catalog Code W3147
RoHS Yes
CE No
Download Product's Datasheet
Guide ▶Anti-reflection coatings are also available at your specified wavelength.
▶In addition to the products described on our website and in the catalog other sizes and wedged windows are available.
▶Please refer to here for wavelength_characteristic Data (Reference Data, EXCEL file format).
Attention ▶When using a laser which has a large diameter, there is a possibility that very little interference fringes will be observed in the luminance distribution of the transmitted light. To avoid this effect of the interference fringes, we provide wedged substrates.
▶When used at wavelengths other than the specified wavelength region, the loss of transmittance increases slightly.
▶When used in a large incident angle, there is a possibility that the transmittance decreases. Also available are anti-reflection coating to increase the transmittance at a particular angle of incidence.
Specifications
MaterialBK7
Surface flatnessλ/10
Parallelism<5″
CoatingDielectric multi-layer coating
Incident angle
Laser Damage Threshold4J/cm2 (Laser pulse width ; 10ns , Repetition frequency ; 20Hz)
Surface Quality (Scratch-Dig)40−20
Clear aperture90% of the diameter
Wavelength range750~1550nm
Diameter φDφ40mm
Thickness t4mm