Borosilicate Windows & Plates - Optical
Borosilicate glass sheets are optically polished to provide outstanding visual quality and optical clarity, then cut to size for our windows and plates. Optically polishing the surface to a precise surface finish and flatness can guarantee the quality of the optical surface unlike general float grade sheet glass borosilicate materials. The glass has a very low CTE (Coefficient of Thermal Expansion) so can maintain high flatness to produce optical flats, laser windows or mirrors. The mechanical strength makes it a good choice for special camera windows with high transparency in visible and near IR & UV range of wavelengths widely used in the fields of optics, photonics and opto-electronics.
Our Borosilicate windows and plates are made as diameters and squares to a standard stock range, or custom made to your design and cut to size.
Please contact our sales team.
Dimensions: | Diameters 5mm to 400mm |
Squares/Rectangles 1mm x 1mm to 300mm x 300mm | |
Thickness Range: | 0.10mm to 20mm thick (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 |
Options: | Toughened, edges polished, drilled, bevelled angles, wedges, optical coatings & shapes |

Please contact us for discount pricing for stock parts over 10+ and volume/OEM quantities
Part No | Data sheet |
Description | Diameter (mm) | Thickness (mm) | Unit price (1-10) |
Qty |
Qty (10+)Volume pricing available for 10+, please add to quote. |
---|---|---|---|---|---|---|---|
WBO-101 | Borosilicate Window | Ø 10 | 1 | €8.05 | |||
WBO-102 | Borosilicate Window | Ø 10 | 2 | €8.05 | |||
WBO-121 | Borosilicate Window | Ø12.5 | 1 | €8.34 | |||
WBO-122 | Borosilicate Window | Ø12.5 | 2 | €8.51 | |||
WBO-152 | Borosilicate Window | Ø 15 | 2 | €8.34 | |||
WBO-202 | Borosilicate Window | Ø 20 | 2 | €10.35 | |||
WBO-251 | Borosilicate Window | Ø 25 | 1 | €10.35 | |||
WBO-252 | Borosilicate Window | Ø 25 | 2 | €8.63 | |||
WBO-253 | Borosilicate Window | Ø 25 | 3 | €9.20 | |||
WBO-403 | Borosilicate Window | Ø 40 | 3 | €14.38 | |||
WBO-501 | Borosilicate Window | Ø 50 | 1 | €19.55 | |||
WBO-502 | Borosilicate Window | Ø 50 | 2 | €16.10 | |||
WBO-503 | Borosilicate Window | Ø 50 | 3 | €17.25 | |||
WBO-506 | Borosilicate Window | Ø 50 | 6 | €21.85 | |||
WBO-5051 | Borosilicate Window | 50 x 50 | 1 | €18.98 | |||
WBO-5052 | Borosilicate Window | 50 x 50 | 2 | €18.98 | |||
WBO-5053 | Borosilicate Window | 50 x 50 | 3 | €21.74 |
Part Number
WBO-101
Borosilicate Window
PDF Data sheet
Diameter (mm) Ø 10
Thickness (mm) 1
UNIT PRICE (1-10)
€8.05 Inc. VAT
Part Number
WBO-102
Borosilicate Window
PDF Data sheet
Diameter (mm) Ø 10
Thickness (mm) 2
UNIT PRICE (1-10)
€8.05 Inc. VAT
Part Number
WBO-121
Borosilicate Window
PDF Data sheet
Diameter (mm) Ø12.5
Thickness (mm) 1
UNIT PRICE (1-10)
€8.34 Inc. VAT
Part Number
WBO-122
Borosilicate Window
PDF Data sheet
Diameter (mm) Ø12.5
Thickness (mm) 2
UNIT PRICE (1-10)
€8.51 Inc. VAT
Part Number
WBO-152
Borosilicate Window
PDF Data sheet
Diameter (mm) Ø 15
Thickness (mm) 2
UNIT PRICE (1-10)
€8.34 Inc. VAT
Part Number
WBO-202
Borosilicate Window
PDF Data sheet
Diameter (mm) Ø 20
Thickness (mm) 2
UNIT PRICE (1-10)
€10.35 Inc. VAT
Part Number
WBO-251
Borosilicate Window
PDF Data sheet
Diameter (mm) Ø 25
Thickness (mm) 1
Focal Length (mm) 0
UNIT PRICE (1-10)
€10.35 Inc. VAT
Part Number
WBO-252
Borosilicate Window
PDF Data sheet
Diameter (mm) Ø 25
Thickness (mm) 2
Focal Length (mm) 0
UNIT PRICE (1-10)
€8.63 Inc. VAT
Part Number
WBO-253
Borosilicate Window
PDF Data sheet
Diameter (mm) Ø 25
Thickness (mm) 3
Focal Length (mm) 0
UNIT PRICE (1-10)
€9.20 Inc. VAT
Part Number
WBO-403
Borosilicate Window
PDF Data sheet
Diameter (mm) Ø 40
Thickness (mm) 3
Focal Length (mm) 0
UNIT PRICE (1-10)
€14.38 Inc. VAT
Part Number
WBO-501
Borosilicate Window
PDF Data sheet
Diameter (mm) Ø 50
Thickness (mm) 1
Focal Length (mm) 0
UNIT PRICE (1-10)
€19.55 Inc. VAT
Part Number
WBO-502
Borosilicate Window
PDF Data sheet
Diameter (mm) Ø 50
Thickness (mm) 2
Focal Length (mm) 0
UNIT PRICE (1-10)
€16.10 Inc. VAT
Part Number
WBO-503
Borosilicate Window
PDF Data sheet
Diameter (mm) Ø 50
Thickness (mm) 3
Focal Length (mm) 0
UNIT PRICE (1-10)
€17.25 Inc. VAT
Part Number
WBO-506
Borosilicate Window
PDF Data sheet
Diameter (mm) Ø 50
Thickness (mm) 6
Focal Length (mm) 0
UNIT PRICE (1-10)
€21.85 Inc. VAT
Part Number
WBO-5051
Borosilicate Window
PDF Data sheet
Diameter (mm) 50 x 50
Thickness (mm) 1
UNIT PRICE (1-10)
€18.98 Inc. VAT
Part Number
WBO-5052
Borosilicate Window
PDF Data sheet
Diameter (mm) 50 x 50
Thickness (mm) 2
UNIT PRICE (1-10)
€18.98 Inc. VAT
Part Number
WBO-5053
Borosilicate Window
PDF Data sheet
Diameter (mm) 50 x 50
Thickness (mm) 3
UNIT PRICE (1-10)
€21.74 Inc. VAT