Search
Menu
Photonics Dictionary

doublet

1. A compound lens consisting of two elements. If there is an air space between the elements it is called an "air-spaced doublet.'' If the inner surfaces are cemented together, it is called a "cemented doublet.'' 2. Two spectral lines produced by a transition between a common state and two states differing only in total angular momentum.
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.