Abstract
A system (100) for providing stealthy vision, comprising a source element (10) configured to provide electromagnetic radiation at a predetermined wavelength in order to illuminate a target (30); and camera (20) configured to image the target (30) to be illuminated at the predetermined wavelength; wherein the source element (10) is configured to provide electromagnetic radiation comprising shortwave infrared light; and wherein the predetermined wavelength comprises a wavelength in a region of the near infrared spectrum wherein the absorption features of an atom or a molecule present in the medium through which the electromagnetic radiation propagates form a continuum, that is a wavelength region wherein two or more narrow absorption lines are close enough to each other that they effectively form a single absorption area with a width greater than that of a single absorption line so that the range of the electromagnetic radiation in the medium is limited for all wavelengths within the continuum; wherein the region corresponds to a wavelength range centered at about 1382,8 nm, 1388,1 nm or 1392.4 nm.
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FI128399 B 20200430 FI20190005323 20190423
FI20195323 A 20200430 FI20190005323 20190423
WO20216990 A1 20201029 WO2020FI50262 20200422
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| Original language | English |
|---|---|
| Patent number | FI20195323 |
| IPC | G02B 23/ 12 A I |
| Priority date | 23/04/19 |
| Publication status | Published - 30 Apr 2020 |
| MoE publication type | H1 Granted patent |