Gary Herrit

Gary L. Herrit, who previously held roles in optical design, laser test design, and customer support at II-VI Infrared (now Coherent), is a semi-retired optical design consultant and co-founder of LensKit.

FIGURE 1. A ray trace of the marginal ray through a lens shows the position error at focus (image plane), with LSA and TSA labeled.

How can you tell if you really need an aspheric lens?

March 16, 2023
Focused beam metrics are crucial for evaluating lens types for laser applications.
A precision two-axis diamond turning machine fabricates metal mirrors for high-power CO2 lasers.
Industrial Laser Solutions

The right mirror increases performance

June 1, 2003
Maximize laser uptime by selecting the best mirrors for the system.