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For a quote on your custom requirements please send us your drawing or specification.

Step Windows

UQG Optics step windows are either windows or plates ground with a step into the edge or length of the glass. This step can allow for rings or sealant for useful for sealing into housing or mechanical assembly. The step windows are made from a wide range of materials including BK7, Fused Quartz, Borosilicate and Sapphire. In fact all materials can be engineered in this way subject to thickness. Additional bevels can be ground to the step for assembly and handling. Angles can also be produced to create angled cones or an angled ground step.

UQG stock step windows to various designs and can custom make them to additional shapes with AR coatings.

Please contact our sales team.

Dimensions: Diameters 10mm to 200mm
Squares/rectangles 20mm x 20mm to 200mm x 200mm
Thickness Range: 1.50mm to 20mm thick
Surface Quality: 80/50 to 20/10 scratch/dig
Surface Flatness: Up to lambda 4 (@633nm)
Material Options: Optical glasses, Fused Silica, Fused Quartz, Borosilicate, Germanium, Silicon & Sapphire
Coating Options: AR optical coatings
Options: Angled bevels, chamfers & faces drilled

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

Material:
UV Fused Silica, Borosilicate, Float glass (plate finish) & Sapphire
Dimension Tolerance:
+0.00/-0.10mm
Thickness Tolerance:
± 0.10mm
Edge Finish:
Fine Ground & chamfered
Surface Flatness:
3-5 Fringes (@633nm)
Surface Quality:
60/40 Scratch/Dig
Parallelism:
≤ 5 Arc mins
Drawings:

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.
STW-1512 PDF Fused Quartz Step Window (Drawing) Ø15 x Ø129 £36.00
QTY
Added. View quote
STW-18165 PDF Borosilicate Step Window Ø18 x Ø16.504.80 £34.00
QTY
Added. View quote
STW-18515 PDF UV Fused Silica Step Window Ø18.50 x Ø153 £42.00
QTY
Added. View quote
STW-2118 PDF Borosilicate Step Window Ø21 x Ø18.059.70 £39.00
QTY
Added. View quote
STW-25195 PDF Sapphire Step Window Ø25 x Ø19.503 £69.00
QTY
Added. View quote
STW-31281 PDF Borosilicate Step Window Ø31 x Ø28.1010.80 £48.00
QTY
Added. View quote
STW-4638 PDF Borosilicate Step Window Ø46 x Ø389 £52.00
QTY
Added. View quote
STW-55335 PDF Float Glass Step Window - Rectangle 55 x 33.506 £32.00
QTY
Added. View quote
STW-5542 PDF Float Glass Step Window Ø55 x Ø426 £29.00
QTY
Added. View quote

Part Number

STW-1512

Fused Quartz Step Window (Drawing)

PDF Data sheet

Thickness (mm) 9

Dimensions (mm) Ø15 x Ø12

UNIT PRICE (1-50)

£36.00 Inc. VAT

QTY

Part Number

STW-18165

Borosilicate Step Window

PDF Data sheet

Thickness (mm) 4.80

Dimensions (mm) Ø18 x Ø16.50

UNIT PRICE (1-50)

£34.00 Inc. VAT

QTY

Part Number

STW-18515

UV Fused Silica Step Window

PDF Data sheet

Thickness (mm) 3

Dimensions (mm) Ø18.50 x Ø15

UNIT PRICE (1-50)

£42.00 Inc. VAT

QTY

Part Number

STW-2118

Borosilicate Step Window

PDF Data sheet

Thickness (mm) 9.70

Dimensions (mm) Ø21 x Ø18.05

UNIT PRICE (1-50)

£39.00 Inc. VAT

QTY

Part Number

STW-25195

Sapphire Step Window

PDF Data sheet

Thickness (mm) 3

Dimensions (mm) Ø25 x Ø19.50

UNIT PRICE (1-50)

£69.00 Inc. VAT

QTY

Part Number

STW-31281

Borosilicate Step Window

PDF Data sheet

Thickness (mm) 10.80

Dimensions (mm) Ø31 x Ø28.10

UNIT PRICE (1-50)

£48.00 Inc. VAT

QTY

Part Number

STW-4638

Borosilicate Step Window

PDF Data sheet

Thickness (mm) 9

Dimensions (mm) Ø46 x Ø38

UNIT PRICE (1-50)

£52.00 Inc. VAT

QTY

Part Number

STW-55335

Float Glass Step Window – Rectangle

PDF Data sheet

Thickness (mm) 6

Dimensions (mm) 55 x 33.50

UNIT PRICE (1-50)

£32.00 Inc. VAT

QTY

Part Number

STW-5542

Float Glass Step Window

PDF Data sheet

Thickness (mm) 6

Dimensions (mm) Ø55 x Ø42

UNIT PRICE (1-50)

£29.00 Inc. VAT

QTY