Non-rigidly coupled, overlapping, non-feedback, optical...

Details Non-rigidly coupled, overlapping, non-feedback, optical... Non-rigidly coupled, overlapping, non-feedback, optical...

H - Electricity

04

N

H04N 7/22 (2006.01) G02F 1/13 (2006.01)

Patent

CA 2703721

Non-rigidly coupled, overlapping, non-feedback optical systems (800) for spatial filtering of Fourier transform op-tical patterns and image shape characterization comprises a first optical subsystem (810) that includes a lens (30) for focusing a polarized, coherent beam (27) to a focal point (31), an image input device (26) that spatially modulates phase positioned between the lens (30) and the focal point (31), and a spatial filter (50) at the Fourier transform pattern (32), and a second optical subsystem (820) overlapping the first optical subsystem (810) includes a projection lens (78) and a detector (80). The second optical subsystem (820) is optically coupled to the first optical subsystem (810).

La présente invention concerne des systèmes optiques sans rétroaction, se recouvrant partiellement, couplés de manière non rigide (800) permettant un filtrage spatial des motifs optiques de transformée de Fourier et une caractérisation de la forme d'image, lesquels systèmes comprennent un premier sous-système optique (810) qui comprend une lentille (30) pour diriger un faisceau cohérent polarisé (27) vers un point focal (31), un dispositif d'entrée d'image (26) qui module spatialement une phase positionnée entre la lentille (30) et le point focal (31), et un filtre spatial (50) au niveau du motif par transformée de Fourier (32), et un second sous-système optique (820) recouvrant partiellement le premier sous-système optique comprend une lentille de projection (78) et un détecteur (80). Le second sous-système optique (820) est couplé optiquement au premier sous-système optique (810).

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