A straight line connecting the curvature centers of the refracting lens surfaces. In a mechanical sense, a line joining the centers of a lens as it is placed in a mount. The principal axis is the optical axis of a lens.
![](https://www.optikos.com/wp-content/uploads/2023/10/Optikos_ID_all_2020_web_3_OptikosID_Stacked_noTag_red_rgb_150x150_large-background-96x96.png)
The Optical Engineering Experts
A straight line connecting the curvature centers of the refracting lens surfaces. In a mechanical sense, a line joining the centers of a lens as it is placed in a mount. The principal axis is the optical axis of a lens.
Optikos Corporation
107 Audubon Road, Bldg. 3
Wakefield, MA 01880
USA
+1 (617) 354-7557
Privacy Policy
YouTube
LinkedIn
X