May 16, 2006

Systems and methods are disclosed for providing position measurement information. For example, in accordance with one embodiment of the present invention, a multiple-pitch grating is employed to receive one or more laser beams and provide an output laser beam encoded with position information of the grating.

18

May 16, 2006

10/697,371

October 29, 2003

250/231.13   250/231.16 250/231.17

G01D   5/34   (20060101)  

250/231.13   250/14   250/15   250/16   250/17   250/18   250/19   250/20   250/21   250/22   250/23   250/24   250/25   250/26   250/27   250/28   250/29   250/30   250/31   250/32   250/33.18   250/231.1