Patent ID: 6026112
Filing Date: 2000-02-15
Classification: B23K,H01S

Abstract:
An optical delivery system for directing a laser output beam having at least two discrete wavelengths from a laser system source to an intended target, comprising:an articulated arm attached to the laser source for delivering said laser output beam to the intended target, said articulated arm having at least first and second straight segments and an intermediate rotatable joint;a prism having and input face and an exit face, said prism being located in said rotatable joint and oriented such that a laser beam travelling down said first segment is redirected by said prism through total internal reflection into said second segment; anda coating formed on both the input and exit faces of the prism, said coating surfaces located where the beam enters and exits said prisin, said coatings inducing a substantially maximum transmission of the laser beam through said input and exit faces at said at least two discrete wavelengths;wherein said prisms are shaped and positioned so that the laser beam strikes said input and exit faces at a substantially normal angle of incidence for efficient transmission of said at least two discrete wavelengths of said laser beam through said coatings and said input and exit faces.