| 主权项 |
1. An apparatus for imaging targets, comprising:
a housing; an upright window supported by the housing; a solid-state imager supported by the housing and having an array of image sensors with a field of view looking upwardly along a vertical axis; and a compact optical arrangement supported by the housing and operative for splitting the field of view of the imager into a plurality of intersecting subfields of view along which return light from a target to be imaged passes through and past the upright window to the imager, the optical arrangement including:
a top mirror positioned along the vertical axis directly above the imager, and facing the upright window to reflect the return light passing through the upright window to the imager,a pair of overhead mirror portions positioned along the vertical axis between the imager and the top mirror, the overhead mirror portions being spaced radially apart to enable the return light reflected by the top mirror to bypass the overhead mirror portions and pass unobstructedly directly to the imager along a central subfield of the field of view of the imager, anda plurality of side fold mirrors spaced away from the vertical axis and operative for reflecting the return light passing through the upright window to the overhead mirror portions, the overhead mirror portions being positioned apart to enable the return light reflected by the side fold mirrors to pass to the imager along a pair of outer subfields of the field of view of the imager, the central subfield being located between the outer subfields. |
