Obstacle sensor operating by collimation and focusing of the emi

Details Obstacle sensor operating by collimation and focusing of the emi Obstacle sensor operating by collimation and focusing of the emi

1997-11-13

1999-11-23

Lee, John D.

Optical waveguides

With optical coupler

342 52, 342153, 342361, 343721, 343753, 385147, H01Q 1906

Patent

active

059914742

ABSTRACT:
Millimetric wave device, capable of operating as a signal transceiving antenna, with an optimum image definition even at extremely short distances (about 1 mm). Depending on the more or less concentration of the waves, the so realised radar antenna adopts, in its different configurations, a curved front optics, or an optics of hemispherical, aspherical, parabolic, concede, convex, biconcave, biconvex or stepped optics. The real focal length of the radar is shorter than that of the lens utilised in the antenna. The standard dimensions of the electronic transception and processing circuit part are very limited and contained.

REFERENCES:
patent: 4517566 (1985-05-01), Bryant et al.
patent: 4845422 (1989-07-01), Damon
patent: 5202692 (1993-04-01), Huguenin et al.
patent: 5227800 (1993-07-01), Huguenin et al.
patent: 5247306 (1993-09-01), Hardange et al.

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