Search
Menu
Photonics Dictionary

equivalent air path

When a block of glass (prism, window, filter, etc.) is placed into a converging light bundle, it increases the physical distance to the point of focus. The equivalent air path for that block of glass is equal to its thickness divided by its index of refraction. See also optical distance.
See Also
Related Terms

We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.