Beam Spread Calculator Math

Basic Formula

$\mathrm{Beam(perp.)}=2\times \mathrm{throw}\times tan\left(\frac{\theta }{2}\right)$

$\mathrm{Beam(parallel)}=h\times (tan(N+\frac{\theta }{2})-tan(N-\frac{\theta }{2}))$

$\mathrm{Throw}=\sqrt{d^2+h^2}$

• θ : beam angle
• N : 90° - angle of incidence
• h : vertical height of instrument
• d : horizontal distance of instrument

This page was created in Amaya using MathML. We have added MathML display support using the W3C suggestions found at http://www.w3.org/Math/XSL/.