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BK7 Windows

BK7 is a pure optical borosilicate-crown glass material and is a high quality choice for a window, substrate or wafer. Mainly for the visible spectrum and near IR it is supplied for industrial, medical and high precision lower power laser applications with AR coatings applied for increased transmission. Used to protect elements and optical enclosures between two environments they are made from large blocks of stocked glass so can be polished to a wide size range.

UQG optics BK7 windows are made as diameters, squares and rectangles to a standard stock range or custom made to your design.

Please contact our sales team.

Dimensions: Diameters 3mm to 300mm
Squares/Rectangles 1mm x 1mm to 300mm x 500mm
Thickness Range: 0.10 to 50mm (subject to dimension)
Dimension/Thickness: Tol up to 0.02mm
Surface Quality: 80/50 to 20/10 scratch/dig
Surface Flatness: Up to lambda 10 (@633nm)
Parallelism: Up to 10 seconds
Coating Options: AR single layer, multi layer & V coatings
Options: Drilled holes, edges polished, bevelled angles, wedges & shapes

Purchase or OEM production quantities?
Ask UQG for a quote we are a major single source supply chain global supplier.

Material:
Schott® N-BK7
Dimension Tolerance:
+0.00/ -0.20mm
Thickness Tolerance:
±0.10mm
Edge Finish:
Fine ground
Surface Flatness:
≤ 5 Fringes (@633nm)
Parallelism:
≤ 3 Arc mins

Please contact us for discount pricing for stock parts over 10+ and volume/OEM quantities

Currency select:

Part No Data
sheet
Description Dimensions (mm)Thickness (mm) Unit price
(1-10)
Qty
Qty
(10+)Volume pricing available for 10+, please add to quote.
WBK-251 PDF BK7 Window Ø 251 £10.00
QTY
Added. View quote
WBK-252 PDF BK7 Window Ø 252 £11.00
QTY
Added. View quote
WBK-253 PDF BK7 Window Ø 253 £12.00
QTY
Added. View quote
WBK-503 PDF BK7 Window Ø 503 £26.00
QTY
Added. View quote

Part Number

WBK-251

BK7 Window

PDF Data sheet

Thickness (mm) 1

Dimensions (mm) Ø 25

Focal Length (mm) 0

UNIT PRICE (1-50)

£10.00 Inc. VAT

QTY

Part Number

WBK-252

BK7 Window

PDF Data sheet

Thickness (mm) 2

Dimensions (mm) Ø 25

Focal Length (mm) 0

UNIT PRICE (1-50)

£11.00 Inc. VAT

QTY

Part Number

WBK-253

BK7 Window

PDF Data sheet

Thickness (mm) 3

Dimensions (mm) Ø 25

Focal Length (mm) 0

UNIT PRICE (1-50)

£12.00 Inc. VAT

QTY

Part Number

WBK-503

BK7 Window

PDF Data sheet

Thickness (mm) 3

Dimensions (mm) Ø 50

Focal Length (mm) 0

UNIT PRICE (1-50)

£26.00 Inc. VAT

QTY