US 12,481,164 B2
Projection of laser light sign with reduced diffraction pattern
Kurt Vonmetz, Bologna (IT); and Luigi Cini, Calderara di Reno (IT)
Assigned to DATALOGIC IP TECH S.R.L., Calderara di Reno (IT)
Filed by Datalogic IP Tech S.R.L., Calderara di Reno (IT)
Filed on Apr. 5, 2024, as Appl. No. 18/628,345.
Prior Publication US 2025/0314898 A1, Oct. 9, 2025
Int. Cl. G02B 27/09 (2006.01); G06K 7/10 (2006.01); H04N 23/56 (2023.01)
CPC G02B 27/0916 (2013.01) [G02B 27/0955 (2013.01); G02B 27/0988 (2013.01); G06K 7/10732 (2013.01); G06K 7/10831 (2013.01); H04N 23/56 (2023.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
a coherent light source;
a structure defining an aperture disposed in optical alignment with and at a first distance from the coherent light source so that a divergent angle of coherent light output by the coherent light source is incident the structure and aperture; and
an imaging lens disposed in optical alignment with the aperture defined by the structure, the imaging lens configured to focus the coherent light onto an image plane located at a second distance from the imaging lens, the imaging lens disposed at a third distance from the structure to focus an object plane defined by the imaging lens, the object plane located between the coherent light source and the structure.