Modular optical modular system for near-focal beam density distributions with alternating beam density profile

摘要

The invention relates to a modular system of optical components (1.1, 1.2, 10) comprising a phase plate (1.1), a focusing lens (1.2) and a beam expander (10). The optical components (1.1, 1.2, 10) are each in a housing (2) taken, which has a first and a second fine thread (2.1, 2.3). The first and second fine threads (2.1, 2.3) are screwed together. The composed phase plate (1.1) is set up with an aspherical focusing lens (1.2) downstream of the beam path for focusing a beamformer (1) for transforming light of a wavelength collimated with the optical axis (X) and an entrance beam density distribution with a Gaussian profile into an exit beam density distribution (LS) with an alternating beam density profile (TP, TP ', TP ", DP, BP) in at least one image plane (B1 to B5).