eo_logo
 
Product added to cart

 
Illumination Spot Size Calculator

View All Technical Tools

db (mm):
f (mm):
x (mm):

Spot Size (mm) : --     

Geometrical Spot Size Calculator
whenf>0andx>f:Spot Size=dbf×(xf)
Spot Size Represents the resulting geometrical spot size after the beam has exited the lens
db Represents the diameter of the beam that enters the lens (units are in mm)
f Represents the focal length of the lensxRepresents the propagation distance from the output side of the lens to the illuminated spot
Notes:
  • Please use the American standard for number formatting rather than the European standard (i.e. for "two and a half," enter "2.5" rather than "2,5").
  • if f<0, be sure type in a negative sign into a calculator.

Description

Determine the illuminated spot size resulting from a collimated light source passing through a singlet based on the input beam diameter, the lens focal length, and the propagation distance. Calculator assumes a thin lens and uses the paraxial approximation. The calculator works for three possible scenarios: f > 0 and the propagation distance > f, f > 0 and the propagation distance < f, and f < 0. The larger the difference between propagation distance and focal length the greater the spot size will be.

Related Products

Was this content useful to you?