Method for optimizing an intensity of a useful light distribution

A method for optimizing an intensity of a useful light distribution comprising:

• providing a light source for emitting a light beam in a z-direction, which defines an optical axis, with a first intensity distribution;
• providing a beam shaping optical unit and a beam focusing optical unit, which are arranged substantially perpendicularly to the z-direction in an x-y plane spanned by an x-direction and a y-direction, for generating a second intensity distribution to be used in a target plane, the target plane being inclined by an angle ALPHA relative to a back focal plane determined by the beam focusing optical unit;
• determining a first intensity of the second intensity distribution at a first point of the second intensity distribution and a second intensity of the second intensity distribution at a second point of the second intensity distribution to be used, the first point and the second point being arranged on different sides of the back focal plane;
• and
• displacing the beam shaping optical unit along a y-axis such that a difference between the first and second intensity lies within a predefinable limit.