Invention Grant
US07995191B1 Scannerless laser range imaging using loss modulation 有权
使用损耗调制的无扫描激光测距成像

  • Patent Title: Scannerless laser range imaging using loss modulation
  • Patent Title (中): 使用损耗调制的无扫描激光测距成像
  • Application No.: US11477248
    Application Date: 2006-06-29
  • Publication No.: US07995191B1
    Publication Date: 2011-08-09
  • Inventor: John V. Sandusky
  • Applicant: John V. Sandusky
  • Applicant Address: US NM Albuquerque
  • Assignee: Sandia Corporation
  • Current Assignee: Sandia Corporation
  • Current Assignee Address: US NM Albuquerque
  • Agent Oliva J. Tsai
  • Main IPC: G01C3/08
  • IPC: G01C3/08
Scannerless laser range imaging using loss modulation
Abstract:
A scannerless 3-D imaging apparatus is disclosed which utilizes an amplitude modulated cw light source to illuminate a field of view containing a target of interest. Backscattered light from the target is passed through one or more loss modulators which are modulated at the same frequency as the light source, but with a phase delay δ which can be fixed or variable. The backscattered light is demodulated by the loss modulator and detected with a CCD, CMOS or focal plane array (FPA) detector to construct a 3-D image of the target. The scannerless 3-D imaging apparatus, which can operate in the eye-safe wavelength region 1.4-1.7 μm and which can be constructed as a flash LADAR, has applications for vehicle collision avoidance, autonomous rendezvous and docking, robotic vision, industrial inspection and measurement, 3-D cameras, and facial recognition.
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