Clear Aperture

Conic Constant

The conic constant describes the curve obtained as a conic surface intersects with a plane. There are three general types of conic section: Hyperbola, Parabola and Ellipse (a Circle is a special Ellipse).

Please enter the appropriate constant as shown in the image.

Image by: By 0x30114 at English Wikipedia, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=41395455

Input Beam Diameter (d_in) 1/e²

Input Beam Diameter (d_in) 1/e²

Output beam size definition by shape type