Larson Electronic Glass’s 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 will 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.
Fused Silica Viewports: