Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Reexamination Certificate
2011-03-01
2011-03-01
Porta, David P (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
Reexamination Certificate
active
07897924
ABSTRACT:
An imaging apparatus uses focusing and collecting optics in combination with steering optics for efficient imaging of a target using an extended terahertz electro-magnetic range challenged by weak sources and low sensitivity of detection. By proper location of optics to utilize angular conversion of the beam to a lateral scan, a rastering imaging apparatus is demonstrated without moving target or entire imaging system. In at least one embodiment a mirror-lens set is used to steer the terahertz (THz) beam along and (or) to collect the THz beam from each point of the target. The target is imaged with a much higher speed than when moving the target or the entire imaging system. A THz wave image can be taken at video frequency for practical usage of the apparatus in diverse application areas, where it has not been considered to be feasible.
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Cho Gyu Cheon
Xu Jingzhou
Imra America Inc.
Kim Kiho
Porta David P
Sughrue & Mion, PLLC
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