Patent ID: 7031059
Filing Date: 2006-04-18
Classification: G02B

Abstract:
1. An observation device for acquiring two images corresponding to a scene viewed from two different aiming directions, comprising: a primary mirror that is parabolic or nearly parabolic for receiving light beams of an object to be observed along two respective angles of incidence θ a secondary reflection means situated between said primary mirror and said focus, said secondary reflection means reflecting light beams received from said primary mirror, said primary mirror being suitable for passing light reflected by said secondary reflection means so as to enable said light reflected by said secondary reflection means to reach a plurality of tertiary reflection means symetrically disposed about said optical axis of said primary mirror and on a side of said primary mirror opposite from a side of the primary mirror on which said secondary reflection means is disposed, and image acquisition means for receiving light reflected by said plurality of tertiary reflection means, characterized in that said secondary reflection means comprises a mirror situated on said optical axis of said primary mirror, said primary mirror and said secondary reflection means being dimensioned in such a manner that the light beams which are incident on said primary mirror with said two respective angles θ wherein said plurality of tertiary reflection means comprise two plane mirrors placed symetrically on either side of said optical axis of said primary mirror, together with two corresponding concave mirrors also disposed symetrically about said optical axis, said plane mirrors reflect respectively onto associated concave mirrors light beams which come from said secondary mirror and corresponding to said respective angles of incidence θ