Adaptive photothermal lens

A computer program product, for a system comprising:

• a micro lens array, comprising:
• a plurality of individual adaptive photo thermal lenses comprising:
• at least one cell, each cell provided with at least one photo absorbing particle;
• and
• a thermo-optical material in thermal contact with the cells;
• and
• at least one controllable light source for illuminating the photo absorbing particles, the light source having at least one spectral component which can be absorbed by the photo-absorbing particles, each cell being defined by the optical interaction area between the at least one photo absorbing particle and the at least one controllable light source, wherein the at least one controllable light source is controllable in one or more of wavelength, power, and polarisation, to locally modify the focal lengths of the individual adaptive photo thermal lenses comprising said cells;
• and
• a controller adapted to control the operation of said at least one controllable light source regarding at least one or more of wavelength, power, and polarisation,
• wherein the computer program product comprises:
• a non-transitory computer-readable storage medium;
• and computer program code, encoded on the medium, configured to cause at least one processor at said controller to perform said control of the operation of the at least one controllable light source, by means of generating and applying at least one control signal to the at least one controllable light source.