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A lenslet array for use in a distance determining system. The array utilizes a plurality of cylindrical lenslets arranged in parallel relation with a crossed cylindrical lens arranged transverse to the lenslets and lying in a plane parallel to the plane of the lenslets. The focal lengths of the lens

A lenslet array for use in a distance determining system. The array utilizes a plurality of cylindrical lenslets arranged in parallel relation with a crossed cylindrical lens arranged transverse to the lenslets and lying in a plane parallel to the plane of the lenslets. The focal lengths of the lens and the lenslets are chosen so that they project an oblong image in a common image plane. Elongated radiation detectors are positioned within the oblong image.

대표청구항 ▼

In apparatus for use in an optical system having an objective lens, the objective lens having an optic axis and producing an image of a remote scene at an image plane, lenslets means mounted proximate the image plane and operable to produce an image of the exit pupil of the objective lens and radiat

In apparatus for use in an optical system having an objective lens, the objective lens having an optic axis and producing an image of a remote scene at an image plane, lenslets means mounted proximate the image plane and operable to produce an image of the exit pupil of the objective lens and radiation detector means mounted within the image of the exit pupil, the improvement comprising: a first cylindrical lens forming a part of the lenslet means, said first cylindrical lens extending in a first direction on a first plane substantially perpendicular to the optic axis; and a plurality of second cylindrical lenses forming a part of the lenslet means spaced from said first cylindrical lens along the optic axis and extending in a second direction on a second plane substantially perpendicular to the optic axis and transverse to the first direction so that the image of the exit pupil is oblong.