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Zero-Length Fused Silica Viewports

Larson Electronic Glass fused silica viewports are preferred over glass because of their transparency to ultraviolet radiation, higher abrasion resistance, and low coefficient of thermal expansion which makes them very resistant to thermal shock. While fused quartz and fused silica viewports are both silicon dioxide (SiO2), fused silica, which is synthetically grown, is superior to a fused quartz viewport in most regards and does not fluoresce when exposed to UV radiation at 253.7µm as does fused quartz.

NOTE: Maximum bakeout temperature limited to 200°C due to low temperature braze alloy.

Fused Silica viewports are offered with CF type, ISO type Kwik-Flange® and Large-Flange®. Viewport window surfaces offer a minimum of distortion and provide maximum transmission for most applications.

Features:

  • Zero-Length offers greater distortion-free view area
  • Nonmagnetic304 stainless steel to fused silica, brazed seal
  • >90% Transmission from 230nm to 2000nm
  • Optional AR Coatings available
  • CF flanges bakeable to 200°C, 25°C/Min gradient
  • Kwik-Flange® and Large-Flange® bakeable to 200°C, 25°C/Min gradient

Request a quote on zero length fused silica viewports for your application, or contact Larson Electronic Glass for more information.

Larson Electronic Glass offers "Zero-Length Fused Silica Viewports" available in 6 standard sizes from 3/4 inch through 8 inch with a variety of flange options. Dimensions are in inches unless otherwise noted.

 
 *Please select the quantity for each item you wish to order and click the 'Add To Quote' button below.
 
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Flange:   View diameter (V):   Reset
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Name
Model
Flange
View diameter (V)

Height (H)
Glass thickness (T)
Price


Add Qty.
3/4" Zero-Length Fused Silica Viewport  3/4" Zero-Length Fused Silica Viewport  VQZ-075-F1  1.33" CF
.62"

.30"
.10"
225


1-1/2" Zero-Length Fused Silica Viewport  1-1/2" Zero-Length Fused Silica Viewport  VQZ-150-F2  2.75" CF
1.40"

.50"
.13"
230


1-1/2" Zero-Length Fused Silica Viewport  1-1/2" Zero-Length Fused Silica Viewport  VQZ-150-F3  3.37" CF
1.40"

.62"
.13"
290


1-1/2" Zero-Length Fused Silica Viewport  1-1/2" Zero-Length Fused Silica Viewport  VQZ-150-K5  NW50
1.40"

.62"
.13"
230


2-1/2" Zero-Length Fused Silica Viewport  2-1/2" Zero-Length Fused Silica Viewport  VQZ-250-F4  4.5" CF
2.69"

.68"
.25"
725


2-1/2" Zero-Length Fused Silica Viewport  2-1/2" Zero-Length Fused Silica Viewport  VQZ-250-F5  4.62" CF
2.69"

.75"
.25"
745


4" Zero-Length Fused Silica Viewport  4" Zero-Length Fused Silica Viewport  VQZ-400-F6  6" CF
3.88"

.78"
.25"
895


4" Zero-Length Fused Silica Viewport  4" Zero-Length Fused Silica Viewport  VQZ-400-F7  6.75" CF
3.88"

.84"
.25"
950


6" Zero-Length Fused Silica Viewport  6" Zero-Length Fused Silica Viewport  VQZ-600-F8  8"CF
5.38"

.88"
.37"
1975


8" Zero-Length Fused Silica Viewport  8" Zero-Length Fused Silica Viewport  VQZ-800-F10  10" CF
7.78"

.97"
.37"
2800


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