Projection device for generating dynamic projections
A projection device for generating dynamic projections includes: an arrangement of multiple light sources spaced apart from each other; a collimation optic for generating a parallel beam path from the light sources and a microlens array arrangement within the beam path of the collimation lens. The focal length of the lenses at the illumination side of the microlens array arrangement is larger than the distance of the lenses from a slide plane.
1 . A projection device for generating dynamic projections, comprising:
an arrangement having a plurality of light sources spaced apart from each other, the plurality of light sources being configured to be independently controlled to dynamically and locally change illumination of the projections;
a collimation optic for generating a parallel beam path from the light sources; and
a microlens array arrangement in the beam path of the collimation optic, wherein a focal length of lenses at an illumination side of the microlens array arrangement is larger than a distance of the lenses to a slide plane of the microlens array arrangement.
2 . The projection device according to claim 1 , wherein the light sources are arranged in a linear manner or in a shape of a matrix.
3 . The projection device according to claim 1 , wherein the lenses are designed for covering an entire surface.
4 . The projection device according to claim 3 , wherein the lenses are arranged in a square, rectangular or hexagonal manner.
5 . The projection device according to claim 1 , wherein the focal length of the lenses at the illumination side is larger than a focal length of lenses at a projection side of the microlens array arrangement.
6 . The projection device according to claim 1 , wherein the microlens array arrangement comprises a microlens array having a carrier and a matrix-shaped arrangement comprising a plurality of lenses.
7 . The projection device according to claim 6 , wherein the carrier and the lenses are designed as single piece.
8 . The projection device according to claim 1 , wherein the microlens array arrangement comprises a first microlens array at the illumination side and a second microlens array at a projection side.
9 . The projection device according to claim 1 , wherein the focal length of the lenses at the illumination side corresponds to a sum of a thickness of the microlens array at the illumination side and the thickness of the microlens array at the projection side.
10 . A projection method for generating dynamic projections, comprising a step of illuminating a microlens array arrangement by a plurality of light sources spaced apart from each other by independently controlling the plurality of light sources to dynamically and locally change illumination of the projections,
wherein a focal length of lenses at an illumination side of the microlens array arrangement is larger than a distance of the lenses to a slide plane of the microlens array arrangement.
11 . The projection device according to claim 1 , further comprising image information stored in the slide plane.