Patent ID: 7379193

Claim:
An imaging system for obtaining a full field three dimensional topography of an object, comprising: a. a projection device having a projecting optical axis comprised of a radiant, a movable projection lens and a first grating having a plurality of grating grooves on one surface and having a caved spot on its opposite surface wherein said caved spot serves as a mark point of said projection device; b. an imaging device having an imaging optical axis comprised of a movable imaging lens and a first photoelectrical component including a first CCD camera, wherein said imaging lens and said first photoelectrical component are positioned so as to be aligned with said imaging optical axis; c. a first rotary table having a rotational axis, wherein said projection device is affixed onto said first rotary table so that said projecting optical axis is perpendicular to said rotational axis of the first rotary table, and a second rotary table having a rotational axis, wherein said imaging device is affixed onto said second rotary table so that said imaging optic axis is perpendicular to said rotational axis of the second rotary table; d. an elongated member which moves in a three-dimensional space having a horizontal top surface, a first end and a second end comprised of first and second horizontal components, wherein said first and second horizontal components are movably positioned on said top surface of said elongated member, said first rotary table is rotatably connected to said first horizontal component wherein said rotational axis of said first rotary table is perpendicular to said horizontal top surface of the elongated member, said second rotary table is rotatably connected to said second horizontal component wherein said rotational axis of said second rotary table is perpendicular to the horizontal top surface of said elongated member; e. a third rotary table having a rotational axis which is parallel to said rotational axis of said first and said second rotary tables, wherein said object is positioned on said third rotary table and said elongated member is movable relative to the third rotary table; f. means for adjusting respective positions of said projection device, said imaging device and said elongated movable member, which causes said projecting optical axis to join said imaging optical axis on an outer surface of said object to thereby obtain an adjustable projecting field to fit objects having variable sizes; and g. means for obtaining said full field three dimensional topography of said object with a high accuracy including taking sequential images of said object.