Lessons

35mm vs 50mm and f/1.0 vs f/1.2: The Ultimate Thermal Scope Lens Guide

Lessons

35mm vs 50mm and f/1.0 vs f/1.2: The Ultimate Thermal Scope Lens Guide

by TDX Optics on Jul 16 2026
When purchasing a thermal scope, it is easy to get hyper-focused on sensor resolution (384x288px vs. 640x512px) and thermal sensitivity (NETD). But if the sensor is the "brain" of your optic, the front lens is the "eyeball".
Why Your Thermal Scope Doesn’t Use Regular Glass

Lessons

Why Your Thermal Scope Doesn’t Use Regular Glass

by TDX Optics on Jun 15 2026
To see heat, a thermal camera requires a specialized lens made of materials that allow infrared radiation to flow through unimpeded. This is where Germanium and Chalcogenide glass enter the picture.