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Re-Entrant, Fused Silica Specifications

Leak Rate: <2x10(-10) atm cc/sec He
Parallelism:
UV Grade: <30 Arc Minutes
DUV Grade: <10 Arc Minutes
Flange Material:  304/316 Stn. Stl.
Flatness: 
DUV Grade:  l /4@ 632 nm Transmitted Wavefront
Surface Finish:

UV Grade:
40/20 Scratch/Dig
DUV Grade:
20/10 Scratch/Dig
Thermal Range: 
-100°C to 200°C
Material: 
Corning HPFS 7980 Fused Silica
Transmission: 

UV Grade: 
>90% @ 250nm (external)
DUV Grade: 
>99.8% @ 248nm (internal)
Homogeneity Grade: 

UV Grade: 
F
DUV Grade: 
A
Inclusion Class: 

UV Grade: 
2
DUV Grade: 
0


Operating Conditions

The thermal ratings specified are safe operating limits determined by various factors including material properties, mechanical design, and the intended operating environment. Temperature ratings for various mounting options may reduce the operating range of a window assembly. All assemblies have a maximum thermal gradient of 25ºC per minute and may be damaged if this limit is exceeded.





Re-Entrant Viewports

VIEWPORT, FUSED SILICA, DUV, RE-ENTRANT, 1.4 VIEW, 450CF
VIEWPORT, FUSED SILICA, DUV, RE-ENTRANT, 1.4 VIEW, 450CF
DUV Grade (Laser) Fused Silica Viewport, Re-entrant Design, 3.50" In-Vacuum Length, 1.40" View Dia, 4.50" Conflat Flange
A6665-2-CF
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$893.00
49649
Add To Cart
VIEWPORT, FUSED SILICA, DUV, RE-ENTRANT, 2.7 VIEW, 600CF
VIEWPORT, FUSED SILICA, DUV, RE-ENTRANT, 2.7 VIEW, 600CF
DUV Grade (Laser) Fused Silica Viewport, Re-entrant Design, 3.50" In-Vacuum Length, 2.69" View Dia, 6.00” Conflat Flange
A6667-2-CF
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$1,523.00
49652
Add To Cart
VIEWPORT, FUSED SILICA, EUV, RE-ENTRANT, 1.4 VIEW, 450CF
VIEWPORT, FUSED SILICA, EUV, RE-ENTRANT, 1.4 VIEW, 450CF
EUV Grade Fused Silica Viewport, Re-entrant Design, 3.50" In-Vacuum Length, 1.40" View Dia, 4.50" Conflat Flange
A6665-3-CF
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$1,208.00
49650
Add To Cart
VIEWPORT, FUSED SILICA, EUV, RE-ENTRANT, 2.7 VIEW, 600CF
VIEWPORT, FUSED SILICA, EUV, RE-ENTRANT, 2.7 VIEW, 600CF
EUV Grade Fused Silica Viewport, Re-entrant Design, 3.50" In-Vacuum Length, 2.69" View Dia, 6.00” Conflat Flange
A6667-3-CF
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$2,048.00
49653
Add To Cart
VIEWPORT, FUSED SILICA, UV, RE-ENTRANT, 1.4 VIEW, 450CF
VIEWPORT, FUSED SILICA, UV, RE-ENTRANT, 1.4 VIEW, 450CF
UV Grade Fused Silica Viewport, Re-entrant Design, 3.50" In-Vacuum Length, 1.40" View Dia, 4.50" Conflat Flange
A6665-1-CF
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$735.00
49648
Add To Cart
VIEWPORT, FUSED SILICA, UV, RE-ENTRANT, 2.7 VIEW, 600CF
VIEWPORT, FUSED SILICA, UV, RE-ENTRANT, 2.7 VIEW, 600CF
UV Grade Fused Silica Viewport, Re-entrant Design, 3.50" In-Vacuum Length, 2.69" View Dia, 6.00” Conflat Flange
A6667-1-CF
step icon
$1,208.00
49651
Add To Cart
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