Knowledge

Optical lenses converge or diverge light and sit at the core of imaging, illumination, laser, and inspection systems. Before you order one, it helps to match the lens type, material, and precision grade to the actual application — the checklist below covers the decisions that matter most. Key Specifications at a Glance...

If you hold two pieces of quartz glass side by side, you cannot tell them apart.Same color. Same clarity. Same chemical formula: SiO₂.But shine a 193nm deep-UV laser through one of them, and it passes straight through. Shine the same laser through the other, and it's completely absorbed before it even reaches...

If you've ever tried to get a suntan through a window, you already know the answer intuitively: ordinary glass blocks UV light. But swap that window for quartz glass, and UV passes straight through. Both materials are transparent to the eye, both are based on silicon dioxide, and both look nearly identical...