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    • 2. 发明申请
    • COVERT ILLUMINATION
    • 封面照明
    • US20100148093A1
    • 2010-06-17
    • US12451480
    • 2008-05-13
    • David Mark Benton
    • David Mark Benton
    • F21K99/00H01S3/10
    • G01S17/02G01S7/4814G01S17/107G02B23/12
    • This invention relates to methods and apparatus for covert illumination. The method involves illuminating the scene with light which is tuned to an absorption resonances of atmospheric oxygen gas. Light tuned to have a wavelength corresponding to an oxygen absorption wavelength travelling through the atmosphere is therefore attenuated by absorption. The method therefore teaches that a low power illumination source can be used to illuminate nearby objects, thus allowing the detail thereof to be resolved, and the illuminating light reflected from the object, or even the light source itself, will be undetectable beyond a certain range due to atmospheric absorption. The illumination may be used in conjunction with the use of low light level imagers to image a scene. Alternatively the illumination could be used for short range optical communication which will be undetectable at much longer range.
    • 本发明涉及隐蔽照明的方法和装置。 该方法包括用调谐到大气氧气的吸收共振的光来照亮场景。 调谐为具有对应于穿过大气的氧吸收波长的波长的光因此被吸收而衰减。 因此,该方法教导了低功率照明源可用于照亮附近的物体,从而允许其细节被解决,并且从物体或甚至光源本身反射的照明光将不可检测到超过一定范围 由于大气吸收。 照明可以与使用低光级成像器结合使用来对场景成像。 或者,照明可以用于短距离光通信,这将在更长的范围内是不可检测的。