Wissen

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...

Wer schon einmal versucht hat, durch ein Fenster hindurch braun zu werden, kennt die Antwort intuitiv: Normales Glas blockiert UV-Licht. Verwendet man jedoch Quarzglas, dringt UV-Strahlung ungehindert hindurch. Beide Materialien sind für das Auge transparent, basieren auf Siliziumdioxid und sehen im Labor nahezu identisch aus. Warum also blockiert das eine Material ultraviolette...