The correction of the wavefront in optical systems implies the use of wavefront sensors, software, and
auxiliary optical systems. We propose evaluated the wavefront using the fact that the wavefront and its intensity are
related in the mathematical expression the irradiance transport equation (ITE)
The development of new technology in optical systems has provided the
possibility of measure intensity and establishes the wavefront. This idea is based in the
fact that wavefront and its intensity are related in the mathematical expression
irradiance transport equation, which is a partial differential equation. The solution for
this kind expression was done in the middle of 1700 by mathematicians like Bernoulli,
Euler, d'Alambert, Laplace, Legendre, Fourier and others, all of them using numerical
techniques to solve these expressions.
The use of optical system i.e. astronomical systems, that can change their
properties adding, removing or altering optical elements is basic when the information
can be a collimated or focused beam reach in best condition, using the wavefront have
been the best way to do this. With this condition is necessary to develop different ways
to establish and measure the wavefront who travels thorough optical system.
To do this will be use the irradiance transport equation. Our treatment is to
solved the irradiance transport equation who describe the intensity variation in a beam
with irradiance <i>I</i>, when it propagates a long the <i>z-axis </i>of optical system. More over,
using a Hartman screen test we expect module the wavefront, measuring the distribution
of intensity at two planes along the <i>z-axis</i>, and finally give the real wavefront.