Optical beam transformation system and illumination system comprising an optical beam transformation system

An optical beam transformation system comprising:

• a first transformation element with a first transformation surface inclined to the optical axis, and a second transformation element, arranged downstream of the first transformation element, with a second transformation surface inclined to the optical axis;
• and
• an optical compensation element effective as a polarization-influencing optical element arranged in the light direction upstream of the first transformation surface,
• wherein the optical compensation element rotates a polarization state of rays such that rays striking the first transformation surface are polarized approximately perpendicular or approximately parallel to the respective incidence plane of the rays on the first transformation surface, and
• wherein the optical compensation element comprises a first raster arrangement comprising a plurality of individual optical retardation elements.

An optical beam transformation system comprising:

• a first axicon element with a first axicon surface inclined to the optical axis, and a second axicon element, arranged downstream of the first axicon element, with a second axicon surface inclined to the optical axis;
• and
• an optical compensation element effective as a polarization-influencing optical element arranged in the light direction upstream of the first axicon surface;
• wherein the optical compensation element rotates a polarization state of rays such that rays striking the first axicon surface are polarized approximately perpendicular or approximately parallel to the respective incidence plane of the rays on the first axicon surface and
• wherein the optical compensation element comprises a first raster arrangement comprising a plurality of individual optical retardation elements.

An optical beam transformation system comprising:

• a first axicon element with a first axicon surface inclined to the optical axis, and a second axicon element, arranged downstream of the first axicon element, with a second axicon surface inclined to the optical axis;
• and
• an optical compensation element effective as a polarization-influencing optical element arranged in the light direction upstream of the first axicon surface;
• wherein the optical compensation element comprises a first raster arrangement comprising a plurality of individual optical retardation elements ,and
• wherein the individual optical retardation elements are half-wave plates whose principal axes are oriented such that rays striking the first axicon surface are polarized approximately perpendicular or approximately parallel to the respective incidence plane of the rays on the first axicon surface.

An optical beam transformation system comprising:

• a sequence of optical elements arranged along an optical axis of the optical beam transformation system and designed for transforming an entrance light distribution striking an entrance surface of the optical beam transformation system into an exit light distribution emerging from an exit surface of the optical beam transformation system by radial redistribution of light intensity;
• the optical elements comprising:
• a first transformation element with a first transformation surface inclined to the optical axis, and a second transformation element, arranged downstream of the first transformation element, with a second transformation surface inclined to the optical axis,
• wherein a polarization rotator for rotating the polarization of the penetrating light by approximately 90° is arranged between the first and the second transformation element.

An optical beam transformation system comprising:

• a first axicon element with a first conical axicon surface inclined to the optical axis, and a second axicon element, arranged downstream of the first axicon element, with a second conical axicon surface inclined to the optical axis;
• and
• an optical compensation element effective as a polarization-influencing optical element arranged in the light direction upstream of the first axicon surface;
• wherein the optical compensation element comprises a first raster arrangement of half-wave plates whose principal axes are oriented such that rays striking the first axicon surface are polarized approximately perpendicular or approximately parallel to the respective incidence plane of the rays on the first axicon surface.

An optical beam transformation system comprising:

• a first transformation element with a first transformation surface inclined to the optical axis, and a second transformation element, arranged downstream of the first transformation element, with a second transformation surface inclined to the optical axis;
• and
• an optical compensation element effective as a polarization-influencing optical element arranged in the light direction upstream of the first transformation surface,
• wherein the optical compensation element comprises a first raster arrangement of half-wave plates whose principal axes are oriented such that rays striking the first transformation surface are polarized approximately perpendicular or approximately parallel to the respective incidence plane of the rays on the first transformation surface.