Deriving a Passive Athermalization Figure of Merit for Length Comparison

Infrared optic lens materials present a unique challenge to opto-mechanical design. In this video, we derive a Figure of Merit (FOM) that describes a commonly used passive solution to the infrared optic negative thermal focus shift problem. This FOM is used in subsequent videos to compare the performance of different optic housing materials.

You may also like

CTE Part 1 – Average and Instantaneous Calculations
CTE can be calculated in different ways. Learn the differences between [...]
CTE Part 2 – How to Choose Between Average or Instantaneous Calculations
In this video, you can learn the best methodology to choose when - and [...]