Learn about Webel IT's new SysMLv2/MBSE Workshop Seminar course!

If the medium surrounding the optical system has a refractive index of 1 (e.g., air or vacuum), then the distance from the principal planes to their corresponding focal points is just the focal length of the system.

Icon class
icon_class
fas fa-quote-left
icon_class_computed
fas fa-quote-left
Related content
An object infinitely far from the optical system forms an image at the rear focal plane
Source
Wikipedia
Copyright information
Text from Wikipedia and Wiktionary web pages quoted for educational purposes is subject to the Wikipedia Creative Commons Attribution ShareAlike Licence
Snippet kind
INFO
Keywords
Full quote
If the medium surrounding the optical system has a refractive index of 1 (e.g., air or vacuum), then the distance from the principal planes to their corresponding focal points is just the focal length of the system.
URL
https://en.wikipedia.org/wiki/Cardinal_point_(optics)
Next snippet
Related snippets
An object infinitely far from the optical system forms an image at the rear focal plane.
The front and rear (or back) focal planes are defined as the planes, perpendicular to the optic axis, which pass through the front and rear focal points.
Related snippets (backlinks)
A principal focus or focal point is a special focus: For a lens, or a spherical or parabolic mirror, it is a point onto which collimated light parallel to the axis is focused.
rays that enter the system parallel to the optical axis are focused such that they pass through the rear focal point
Visit also
Visit also (backlinks)