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λ/4 N-BK7 Windows

  • Stocked optical windows available
  • Surface quality 10/5 S/D and parallelism 10”
  • Coating options: uncoated, 400-700 nm, 700-1100 nm, 1100-1650 nm or custom
  • Maximum diameter: 300mm
Inquire for custom product  
Code Diameter Thickness Surface Quality Flatness Parallelism Coating Unit Price Delivery Cart
131-001 12.7mm 2.0mm 10/5 S/D λ/4 10 arcsec Uncoated $9.0 2~3 Days
131-002 12.7mm 2.0mm 10/5 S/D λ/4 10 arcsec 400-700nm AR $13.5 1 week
131-003 12.7mm 2.0mm 10/5 S/D λ/4 10 arcsec 700-1100nm AR $13.5 1 week
131-004 12.7mm 2.0mm 10/5 S/D λ/4 10 arcsec 1100-1650nm AR $13.5 1 week
131-005 12.7mm 3.0mm 10/5 S/D λ/4 10 arcsec Uncoated $9.0 2~3 Days
131-006 12.7mm 3.0mm 10/5 S/D λ/4 10 arcsec 400-700nm AR $13.5 1 week
131-007 12.7mm 3.0mm 10/5 S/D λ/4 10 arcsec 700-1100nm AR $13.5 1 week
131-008 12.7mm 3.0mm 10/5 S/D λ/4 10 arcsec 1100-1650nm AR $13.5 1 week
131-009 25.4mm 2.0mm 10/5 S/D λ/4 10 arcsec Uncoated $18.0 2~3 Days
131-010 25.4mm 2.0mm 10/5 S/D λ/4 10 arcsec 400-700nm AR $26.0 1 week
131-011 25.4mm 2.0mm 10/5 S/D λ/4 10 arcsec 700-1100nm AR $26.0 1 week
131-012 25.4mm 2.0mm 10/5 S/D λ/4 10 arcsec 1100-1650nm AR $26.0 1 week
131-013 25.4mm 3.0mm 10/5 S/D λ/4 10 arcsec Uncoated $18.0 2~3 Days
131-014 25.4mm 3.0mm 10/5 S/D λ/4 10 arcsec 400-700nm AR $26.0 1 week
131-015 25.4mm 3.0mm 10/5 S/D λ/4 10 arcsec 700-1100nm AR $26.0 1 week
131-016 25.4mm 3.0mm 10/5 S/D λ/4 10 arcsec 1100-1650nm AR $26.0 1 week
131-017 25.4mm 4.0mm 10/5 S/D λ/4 10 arcsec Uncoated $18.0 2~3 Days
131-018 25.4mm 4.0mm 10/5 S/D λ/4 10 arcsec 400-700nm AR $26.0 1 week
131-019 25.4mm 4.0mm 10/5 S/D λ/4 10 arcsec 700-1100nm AR $26.0 1 week
131-020 25.4mm 4.0mm 10/5 S/D λ/4 10 arcsec 1100-1650nm AR $26.0 1 week
131-021 25.4mm 6.0mm 10/5 S/D λ/4 10 arcsec Uncoated $18.0 2~3 Days
131-022 25.4mm 6.0mm 10/5 S/D λ/4 10 arcsec 400-700nm AR $26.0 1 week
131-023 25.4mm 6.0mm 10/5 S/D λ/4 10 arcsec 700-1100nm AR $26.0 1 week
131-024 25.4mm 6.0mm 10/5 S/D λ/4 10 arcsec 1100-1650nm AR $26.0 1 week
131-025 50.8mm 4.0mm 10/5 S/D λ/4 10 arcsec Uncoated $45.5 2 weeks
131-026 50.8mm 4.0mm 10/5 S/D λ/4 10 arcsec 400-700nm AR $53.0 3 week
131-027 50.8mm 4.0mm 10/5 S/D λ/4 10 arcsec 700-1100nm AR $53.0 3 week
131-028 50.8mm 4.0mm 10/5 S/D λ/4 10 arcsec 1100-1650nm AR $53.0 3 week
131-029 50.8mm 12.0mm 10/5 S/D λ/4 10 arcsec Uncoated $48.5 2~3 Days
131-030 50.8mm 12.0mm 10/5 S/D λ/4 10 arcsec 400-700nm AR $60.0 1 week
131-031 50.8mm 12.0mm 10/5 S/D λ/4 10 arcsec 700-1100nm AR $60.0 1 week
131-032 50.8mm 12.0mm 10/5 S/D λ/4 10 arcsec 1100-1650nm AR $60.0 1 week

An Optical Window is a transparent optical component that transmits light while acting as a barrier between the detrimental external conditional and sensitive cores inside a system. Apart from the primary function of protection, optical windows might also be used as elements to increase transmission, enhance contrast, or seal a hermetic chamber. Optical windows can be incorporated into a diverse range of optical devices including sensors, cameras, and lasers.

N-BK7 is a kind of optical glass often used for manufacturing optical components, including windows. N-BK7 glass is known for its low cost, high optical transmission across the visible spectrum and into the near-infrared region, low dispersion, high hardness and resistance to scratches and abrasions, and the ability to withstand changes in temperature without significant expansion or contraction. It belongs to the Schott glass catalog, and is one of the most common optical glass materials.

Shalom EO offers stock and custom λ/4 N-BK7 Windows with multiple coating options: uncoated, 400-700nm, 700-1100nm, 1100-1650nm, or customizable coatings. Regarding the off-the-shelf products, sizes are standardized which benefits OEM, whilst a maximum diameter of 300mm is procurable in custom versions. These N-BK7 windows, featuring an exceptional surface quality of 10/5 S/D accredited to our tight-geometric control measures, optical excellence and robustness are competent at various tasks.

BK7 λ/4 D50.8x12mm 400-700nm Windows

BK7 λ/4 D50.8x12mm 400-700nm Windows

BK7 λ/4 D25.4x3mm 700-1100nm Windows

BK7 λ/4 D25.4x3mm 700-1100nm Windows

BK7 λ/4 D12.7x3mm Uncoated Windows or Substrates

BK7 λ/4 D12.7x3mm Uncoated Windows or Substrates