US 12,241,832 B2
Multi-wavelength laser inspection
Keith D. Humfeld, Federal Way, WA (US); and Morteza Safai, Newcastle, WA (US)
Assigned to The Boeing Company, Arlington, VA (US)
Filed by The Boeing Company, Arlington, VA (US)
Filed on Nov. 15, 2023, as Appl. No. 18/509,402.
Application 18/509,402 is a division of application No. 17/681,650, filed on Feb. 25, 2022, granted, now 11,860,093.
Application 16/890,950 is a division of application No. 15/991,292, filed on May 29, 2018, granted, now 10,705,019, issued on Jul. 7, 2020.
Application 17/681,650 is a continuation of application No. 16/890,950, filed on Jun. 2, 2020, granted, now 11,262,302, issued on Mar. 1, 2022.
Prior Publication US 2024/0085325 A1, Mar. 14, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G01N 21/64 (2006.01); G01J 3/02 (2006.01); G01J 3/06 (2006.01); G01J 3/28 (2006.01); G01J 3/44 (2006.01); H01S 5/10 (2021.01)
CPC G01N 21/6402 (2013.01) [G01J 3/0232 (2013.01); G01J 3/4406 (2013.01); G01J 2003/064 (2013.01); G01J 3/2889 (2013.01); G01N 2021/6419 (2013.01); G01N 2021/6421 (2013.01); H01S 5/1092 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for inspecting a surface, comprising:
an optical system comprising at least one optical element, wherein the optical system receives light pulses and directs the light pulses to points along a scan line during a plurality of time intervals such that:
a wavelength of the light pulses directed to each point along the scan line varies from point to point within time intervals of the plurality of time intervals, and
over the plurality of time intervals, light having each wavelength of a plurality of wavelengths is directed to each point along the scan line; and
a gated camera configured to record a fluorescent response of the surface from the light having each wavelength of the plurality of wavelengths at each point along the scan line.