Patent ID: 9250438
Filing Date: 2016-02-02
CPC Classification: G02B

Claim Text:
1. A freeform surface reflective scanning system comprising: a light source configured to provide a laser; an aperture located on a laser light path; a first freeform surface mirror located on an aperture side that is away from the light source, and configured to reflect the laser to form a first reflected light; a second freeform surface mirror located on a first reflected light path, and configured to reflect the first reflected light to form a second reflected light; wherein a first three-dimensional rectangular coordinates system (X,Y,Z) is defined by a first freeform surface mirror location, an aperture center is located on a Z-axis; a second three-dimensional rectangular coordinates system (X′,Y′,Z′) is defined by a second freeform surface mirror location, the second three-dimensional rectangular coordinates system (X′,Y′,Z′) is obtained by rotating the first three-dimensional rectangular coordinates system (X,Y,Z) for about 90 degrees, in an anticlockwise direction, in a YZ plane, and a second three-dimensional rectangular coordinates system (X′,Y′,Z′) origin is located on a Y-axis, a first freeform surface mirror surface is a fourth order xy polynomial surface, and a second freeform surface mirror surface is a fourth order x′y′ polynomial surface.