US 12,259,243 B2
System and method for controlling a light projector in a construction site
Uri Yehuday, Holon (IL); and Tomer Shaul Elran, Petah-Tikva (IL)
Assigned to LIGHTYX SYSTEMS LTD, Tel Aviv (IL)
Filed by LIGHTYX SYSTEMS LTD., Tel Aviv (IL)
Filed on Aug. 14, 2023, as Appl. No. 18/449,339.
Application 18/449,339 is a continuation of application No. 17/685,724, filed on Mar. 3, 2022, granted, now 11,725,939.
Application 17/685,724 is a continuation of application No. PCT/IL2020/050962, filed on Sep. 3, 2020.
Claims priority of provisional application 62/895,518, filed on Sep. 4, 2019.
Prior Publication US 2023/0384095 A1, Nov. 30, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G01C 15/00 (2006.01); G01B 11/25 (2006.01); H04N 9/31 (2006.01)
CPC G01C 15/006 (2013.01) [G01B 11/25 (2013.01); H04N 9/3161 (2013.01); H04N 9/3179 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A system for projecting a portion of a construction plan within a construction site, the system comprising:
a light projector configured to project an image associated with the portion of the construction plan onto at least one specific surface within the construction site, by projecting a set of vectors, starting at an XYZ position within the light projector and ending at respective XYZ coordinates;
at least one sensor configured to record at least some of: a set of XYZ coordinates of the at least one specified surface, and a set of XYZ coordinates of the image as projected on the at least one specific surface; and
a computer processor configured to:
derive, from the construction plan, an intended projection portion which comprises visual content and dimensional data intended to be projected on the at least one specific surface which also appears in the construction plan;
calculate XYZ coordinates for the intended projection portion, based on the construction plan and the XYZ position of the light projector;
compare the XYZ coordinates recorded by the sensor with the XYZ coordinates for the intended projection portion, to detect respective XYZ displacements;
generate a modified projection portion based on the detected respective XYZ displacements,
wherein the light projector is further configured to project said modified projection portion onto the specific surface,
wherein the light projector is further configured to steer a light beam between at least some of the vectors, thereby projecting the image by scanning the light beam, and
wherein the light projector and the computer processor are further configured to implement an automatic re-alignment of projected element and based on measurement of the XYZ displacements.