Flat Rectangular Windows

  • Made of BK7 glass or UV grade fused silica
  • High transmittance, low wavefront distortion and low scatter
  • Durable and strong
  • 2 arcmin parallelism
  • Can be supplied with AR, HR or metallic coatings

The usage of flat windows allows optical radiation to pass from one environment to another, without mixing other components of these environments. Considerations in selecting windows may include transmission, scattering, wavefront distortion and resistance to certain environments. The ideal window allows an optical beam to pass from one medium to the next without changing the wavelength distribution of the beam, the transmitted wavefront or scatter any of the light out of the beam. We offer windows of three different materials, from which you may choose in accordance with the properties you need: BK7 and UV grade fused silica.

 

Windows can be supplied with a coating of your choice. If you would like to order a window with coating, please note the code of the window and the code of the coating in your request. For required coating please refer to the COATINGS section.

Delivery

Estimated delivery time: from 4 - 5 days

Material
W, Width
L, Length
Thickness, mm

BK7

Code Material W, Width L, Length Thickness, mm Price Delivery Add to cart
215-0122 BK7 15 mm 20 mm 2 mm 12 $ 4 - 5 days To cart
215-0222 BK7 25,4 mm 25,4 mm 2 mm 17 $ 4 - 5 days To cart
215-0232 BK7 20 mm 30 mm 2 mm 18 $ Request To cart
215-0252 BK7 25,4 mm 50,8 mm 2 mm 22 $ 4 - 5 days To cart
215-0552 BK7 50,8 mm 50,8 mm 2 mm 31 $ Request To cart
215-0556 BK7 50,8 mm 50,8 mm 6.3 mm 36 $ 4 - 5 days To cart

UVFS

Code Material W, Width L, Length Thickness, mm Price Delivery Add to cart
215-1122 UVFS 15 mm 20 mm 2 mm 22 $ 4 - 5 days To cart
215-1222 UVFS 25,4 mm 25,4 mm 2 mm 28 $ 4 - 5 days To cart
215-1232 UVFS 20 mm 30 mm 2 mm 29 $ 4 - 5 days To cart
215-1252 UVFS 25,4 mm 50,8 mm 2 mm 35 $ 4 - 5 days To cart
215-1552 UVFS 50,8 mm 50,8 mm 2 mm 53 $ 4 - 5 days To cart
215-1556 UVFS 50,8 mm 50,8 mm 6.3 mm 58 $ 4 - 5 days To cart
Delicious

Material

BK7, UV FS

Surface quality

60-40 scratch & dig (MIL-PRF-13830B)

Clear aperture

>80% of the diameter

Diameter tolerance

+0.00/ -0.5 mm

Thickness tolerance

±0.2 mm

Flatness

1 λ per inch @ 633 nm

Parallelism

2 arcmin

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