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Compared with ordinary glass materials, quartz glass has superior light transmittance and heat-resistance characteristics. Thus, quartz glass is widely used in various lamps, including mercury lamps, halogen lamps, xenon lamps, and so on.
Lamps in which quartz glass is used are employed in numerous different fields. For example, these lamps are used for sterilization in the foodstuffs and medical treatment industries, as light sources in all types of lighting, optical equipment, and in the exposure devices used in semiconductor manufacturing processes, and as lamps used in cleaning applications, etc.
| Category | Grade | OH Content (ppm) | Characteristics | Shape |
|---|---|---|---|---|
| Ozone-Free Quartz Glass | M215 M235 | approx. 130-220 | M215 shows reduced light transmittance of 50% or less at wavelengths of 215 nm and shorter, while M235 has 50% or less reduced light transmittance at wavelengths of 235 nm and shorter. | Tube |
| Synthetic Quartz Glass | SUPRASIL-300 | <1 | An ultra-pure product, without any bubbles or foreign matter. Its transmittance characteristics are superior especially at vacuum ultraviolet wavelengths. | Tube |
| SUPRASIL-310 | approx. 250 | Tube, Plate | ||
| Natural Quartz Glass | HERALUX | approx. 170 | This shows superior transmittance characteristics at wavelengths of 200 nm and above. | Tube, Plate, Rod |
| HLQ210 HLQ270 | approx. 30 |
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