Peter L Chang

US Patent:

8056879, Nov 15, 2011

Filed:

Feb 13, 2009

Appl. No.:

12/370604

Inventors:

Peter Chang - New York NY, US

International Classification:

A47G 1/24

US Classification:

248478, 248468, 359872

Abstract:

A high precision mirrormount comprises a retaining plate retaining reflecting mirror; an adjusting plate behind the retaining plate; a retaining ball fixed between the retaining plate and the adjusting plate; a fine-adjusting plate installed at the backside of the adjusting plate; a tension shaft fixed to the adjusting plate and exposing out of the fine-adjusting plate; tension springs being installed around the tension shaft; a first adjusting screw serving to coarsely adjust the adjusting plate to move closer or far away from the retaining plate; and a second adjusting screw having one end resisting against an elastic element which has an elastic coefficient of the elastic element being very smaller than those of the tension springs. Thus, the second adjusting screw has an effect of fine adjustment. In 2D case, two above structures are formed along an X axis and a Y axis respectively.

US Patent:

20100104252, Apr 29, 2010

Filed:

Oct 29, 2008

Appl. No.:

12/260091

Inventors:

Peter Chang - New York NY, US

International Classification:

G02B 6/46

US Classification:

385134

Abstract:

A mechanical nanomover for optical elements alignment comprises a platform; a front supporting block and a rear supporting block; a left metal sheet and a right metal sheet installed between the two supporting blocks; a movable block installed between the two metal sheets; a weak spring and a strong spring which are interacted with the movable block. A translation stage serves to drive the weak spring to drive the movable block. The elastic coefficient of the strong spring is much greater than that of the weak spring so that the larger displacement of the weak spring will induce only a small displacement of the movable block due to the interaction of the strong spring. No electric power is needed to drive the structure of the nanomover. The mechanical nanometer can provide a sufficient precision to the operation, while it is very inexpensive.