Patent ID: 6842293
Filing Date: 2005-01-11
Classification: G02B

Abstract:
1. A laser beam expander for a high intensity laser beam comprising: a) a reflecting concave or convex mirror for said high intensity laser beam to reflect said high intensity laser beam and expand the size of said beam; said high intensity laser beam having a preselected path intersecting said reflecting mirror at a first position; said reflecting mirror reflecting said high intensity laser beam on a preselected reflection path; b) a beam collimator in optical communication with said high intensity laser beam reflected by said reflecting mirror to collimate said reflected beam; c) said reflecting mirror moveably mounted in the path of said high intensity laser beam so that said mirror can be moved to bring different positions on said mirror in the preselected path of said high intensity laser beam when a position on said mirror is damaged without changing said preselected reflection path.