Optics: measuring and testing – Range or remote distance finding – With photodetection
Reexamination Certificate
2005-07-21
2008-03-25
Tarcza, Thomas H. (Department: 3662)
Optics: measuring and testing
Range or remote distance finding
With photodetection
Reexamination Certificate
active
07349074
ABSTRACT:
The present invention relates to a light scanner device (10) for measuring a range and an angular direction of a target object (56), the device (10) comprising a pulsed source (12) adapted to transmit light pulses, a transmitter deflection means (20) adapted to reflect and sweep the transmitted light pulses in variable sweep directions across a sweep sector in a sweep plane (15), a photodetection means (42) adapted to detect received light pulses that have been reflected in the sweep plane (15), a receiver deflection means (24) adapted to reflect light pulses that have been reflected in the sweep plane (15) and to re-direct the reflected light pulses to the photodetection means (42). The device comprises optical shielding means (32) adapted to optically shield transmitted light pulses on their trajectory from the pulse source (12) to the transmitter deflection means (20) and at least a portion of their trajectory extending from the transmitter deflection means (20) into the sweep sector from reflected light pulses on their trajectory between the photodetection means (42) and the receiver deflection means (24) and at least a portion of their trajectory extending in the sweep sector and ending on the receiver deflection means (24).
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B.E.A. sa
Ratcliffe Luke D.
Tarcza Thomas H.
Woodling Krost and Rust
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