fresnel.li

Free near field diffraction calculator.
Constraints

Images need to be square.

Amplitude and phase images need to be of same size.

Only images of type .png are accepted.

Maximum image size is 256x256.

Parameters:
Wavelength:

Distance from aperture:

Aperture size:

Screen size: (times aperture)
x aperture size
Select files
Amplitude file:

Phase file:


How it works

explanation

The calculator computes the fresnel integral using a dft approach.

Examples

Example

Optical vortex

Car

Optical vortex

Car

Optical vortex