Webinars

Optical System Alignment

Educational Series:

Factors That Influence Thermal Focus Shift: A Thin Lens Model

As a supplement to Deriving a Passive Athermalization Figure of Merit for Length Comparison, this video explores the effect of thermal expansion and refractive index on a thin lens’ thermal focus shift. Different classes of lens materials are then compared using this simple equation.

Deriving a Passive Athermalization Figure of Merit for Length Comparison