07009141 is referenced by 19 patents and cites 7 patents.

A rotary refractive laser scanner head uses two sets of lenses and prisms aligned along a common optical axis. Each prism is paired with one of the lenses. The lens-prism pairs are separately mounted rotatable on a common axis coaxial with the optical axis. A motor drives two gear sets. Each gear set is separately coupled to one of the two lens-prism pairs and rotates them at selected, typically different speeds. An input laser beam is directed along the optical axis at one of the lens-prism pairs. The first pair collimates and refracts the input beam into an intermediate deflected beam according to Snell's law and the characteristics of the laser beam and optics. The second pair receives the intermediate beam and further deflects it to form an output beam. By selecting the motor speed, gear ratios, optics spacing, characteristics and prism wedge (deflection) angle, the scanner head effectively can scan an output laser beam over a desired pattern area.

Title
Rotary scanning laser head with coaxial refractive optics
Application Number
10/272329
Publication Number
7009141 (B1)
Application Date
October 15, 2002
Publication Date
March 7, 2006
Inventor
James W Thomas
Los Altos
CA, US
Mitchell R Wool
Sunnyvale
CA, US
Agent
George M Steres
Assignee
General Lasertronics
CA, US
IPC
B23K 26/36
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