US 11,921,404 B2
Intelligent long-distance infrared fill-light set
Chih-Yi Yang, Taipei (TW); and Hironori Kondo, Taipei (TW)
Assigned to LUMOS TECHNOLOGY CO., LTD., Taipei (TW)
Appl. No. 17/791,171
Filed by Chih-Yi Yang, Taipei (TW)
PCT Filed Jan. 14, 2021, PCT No. PCT/CN2021/071938
§ 371(c)(1), (2) Date Jul. 6, 2022,
PCT Pub. No. WO2021/143787, PCT Pub. Date Jul. 22, 2021.
Claims priority of provisional application 62/961,223, filed on Jan. 15, 2020.
Prior Publication US 2023/0050340 A1, Feb. 16, 2023
Int. Cl. G03B 15/05 (2021.01); H04N 23/71 (2023.01); H04N 23/74 (2023.01)
CPC G03B 15/05 (2013.01) [H04N 23/71 (2023.01); H04N 23/74 (2023.01)] 6 Claims
OG exemplary drawing
 
1. An intelligent long-distance infrared fill-light set for illuminating a predetermined target range at least 500 meters, wherein the intelligent long-distance infrared fill-light set cooperates with an infrared image acquisition equipment to obtain at least one image of an illuminated-object within the predetermined target range, and the intelligent long-distance infrared fill-light set comprises:
a plurality of infrared fill-lights, each comprising:
at least one optical lens, having an optical axis that passes through a focus;
a plurality of coherent infrared light sources for respectively emitting at least one infrared coherent beam, wherein each of the infrared coherent beam has a main beam angle, making the infrared coherent beam generate a substantial overlapping area and at least one non-overlapping area when illuminating the predetermined target range; and the main beam angle of at least one of the coherent infrared light sources deviates from the optical axis; and
a plurality of enabling devices, for outputting enabling current in order to respectively enable the coherent infrared light sources that emit the infrared coherent beam; and
a control unit that receives image data acquired by the infrared image acquisition equipment, for calculating and respectively adjusting the enabling current of the enabling device according to brightness of the image of the illuminated-object in the image data so as to respectively control luminous intensity of the coherent infrared light source, to locally strengthen or weaken the substantial overlapping area and/or the non-overlapping area in the predetermined target range;
wherein any two infrared fill-lights are spaced at least a predetermined distance, so that within a predetermined dangerous illumination range, human eyes that accidentally enter the predetermined dangerous illumination range will not be simultaneously illuminated by a plurality of infrared coherent beams from the infrared fill-lights, thereby avoiding exceeding the Maximum Permissible Exposure (MPE).