Why Your Laser Lens Loses Focus: Causes and Fixes
A laser lens that drifts out of focus usually points to contamination, thermal lensing, or a coating mismatch. Here's how to diagnose and fix each cau...
Category: How-to GuidesBlog
Product reviews, how-to guides, and industry news from Esco Optics, Inc..
N-BK7 vs Fused Silica: Choosing the Right Substrate
N-BK7 and fused silica solve different optical problems. Compare UV transmission, index stability, and thermal behavior to pick the right substrate fo...
Category: Buying Guides
How to Clean and Handle Optical Lenses Without Damage
Protect coated optics and bare glass with a repeatable cleaning routine, safe solvent choices, and storage habits that prevent scratches and haze.
Category: Tips & Care
Sapphire Windows vs Fused Silica: Which to Choose?
Compare sapphire and fused silica windows on durability, transmission, and surface specs to pick the right material for your application.
Category: Comparisons