Beam shaping method and device employing full-image transfer for planar light sources

A beam shaping device employing full-image transfer for planar light sources, comprising:

• a light source array composed of multiple planar light sources which are arranged in the same plane;
• and
• a lens group composed of multiple first lenses, wherein the multiple first lenses and the multiple planar light sources are coaxially arranged in a manner of one-to-one correspondence, and the multiple first lenses are respectively used for magnifying and imaging the beams emitted by the multiple planar light sources, so as to obtain magnified full images of the multiple planar light sources;
• and
• by means of the distances between the multiple first lenses and the multiple planar light sources, the magnified full images of the multiple planar light sources are seamlessly stitched at a primary imaging position, so that the magnified full images of the multiple planar light sources are stitched into a seamless light source at the primary imaging position;
• wherein along any section of a primary optical axis, the distance u between each of the planar light sources and the first lens and the distance v between the first lens and the primary imaging position satisfy the following formulas simultaneously:
• 1/f=1/u+1/v;
• k/h=v/u;
• h+2×u×tan(θ/2)≤D≤k;
• k−h=d;
• along any section of the primary optical axis, the size of the planar light source is h, the distance between adjacent light sources is d, and the size of the magnified full image of the planar light source at the primary imaging position is k;
• the full angle of the divergence angle of the planar light source is θ;
• and the diameter of the first lens is D, and the focal length of the first lens is f.