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Sales engineer
Arminas Butkus +370 5 219 4884
Flat-parallel windows
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Flat-parallel windows

Main features

 

  • Made from high-quality, laser grade polished BK7 or UVFS glass
  • Windows and substrates are available in round or rectangular shape with various thicknesses
  • Dielectric thin film or metalic coating deposition on demand

 

Application examples 

 

  • Base of mirrors and beamsplitters
  • Isolation of different physical environments
  • Beam sampling
Request custom
  • Description
  • Specifications

Uncoated flat-parallel windows are fabricated from BK7 or UVFS glass material, with both flat and laser grade polished surfaces. BK7 and UVFS are most widely used optical glasses for transmitting and reflecing optics for UV (only UVFS), visible and near-infrared applications due to ease of processing, low-cost and excellent optical properties. For high-power applications UVFS glass is a better option, because of low sensitivity to temperature variations and relatively higher damage threshold. For non-laser and low-power applications BK7 is a cost-effective choice. We offer dielectric thin film or metallic coating services in order to optimize the performance of flat-parallel windows.

Flat-parallel windows
Material BK7, UVFS, other materials are also available
Clear aperture >85%
Face dimensions tolerance +0/-0,15
Thickness tolerance ±0,25 mm
Parallelism error <30 arcsec
Protective chamfers Diameter≤50,8 mm:<0,35 mm at 45°
Diameter>50,8 mm:<0,50 mm at 45°
Coatings Uncoated
Surface quality Diameter≤25,4 mm: 10-5 S-D
Diameter>25,4 mm: 20-10 S-D
Surface flatness Diameter≤25,4 mm:<λ/[email protected],8 nm
Diameter>25,4 mm:<λ/[email protected],8 nm
Order your item
Material Face dimensions Thickness SKU price quantity
UVFS
⌀25,4 mm
2 mm
6222
Request
UVFS
⌀25,4 mm
5 mm
6223
Request
UVFS
⌀12,7 mm
2 mm
6241
Request
UVFS
⌀12,7 mm
6 mm
6242
Request
UVFS
20x40 mm
5 mm
6243
Request
UVFS
⌀38,1 mm
6,35 mm
6244
Request
UVFS
⌀50,8 mm
6,35 mm
6245
Request
UVFS
⌀50,8 mm
9,525 mm
6246
Request
BK7
⌀25,4 mm
6,35 mm
6247
Request
BK7
⌀38,1 mm
6,35 mm
6248
Request
BK7
⌀50,8 mm
6,35 mm
6249
Request
BK7
⌀50,8 mm
9,525 mm
6250
Request
UVFS
⌀76,2 mm
12,7 mm
6251
Request
UVFS
⌀101,6 mm
12,7 mm
6252
Request
BK7
⌀76,2 mm
12,7 mm
6253
Request
BK7
⌀101,6 mm
12,7 mm
6254
Request