Patent ID: 8172751
Filing Date: 2012-05-08
Classification: A61B,F21S,F21V,F21W,Y10S

Abstract:
1. A surgical lamp for illuminating a surgical site, comprising: a housing defining an internal cavity; a light source disposed within said internal cavity of said housing for producing a light field having an associated light intensity and pattern size at a surgical site that is remote from said housing; a voltage sensitive device disposed between said light source and said surgical site, said voltage sensitive device having light transmissive properties that change in response to a biasing voltage applied thereto; a lens for modifying said pattern size and said light intensity at said surgical site; and a controller for controlling said biasing voltage to said voltage sensitive device wherein said controller is operable based on changes in said light intensity at said surgical site to modify said biasing voltage across said voltage sensitive device such that said light intensity at said surgical site remains at a desired light intensity.