Patent ID: 7728962
Filing Date: 2010-06-01
Classification: G01M

Abstract:
1. An apparatus for making visible a mark on a spectacle lens comprising: an illumination light source arranged on a first side of said spectacle lens for generating an illumination light beam impinging on said first side of said spectacle lens for identifying said mark, said illumination light beam being configured to image substantially the entire lens surface of said spectacle lens; a reflector arranged directly on a side of said spectacle lens opposite said first side, and being configured as an area extending substantially over the entire lens surface area of said spectacle lens which reflects incoming light over a large range of incident angles essentially into the same direction in which it has come in; an image generating camera for receiving an observation light beam coming from said spectacle lens; first optical means for guiding said illumination light beam through said spectacle lens; second optical means arranged on said first side of said spectacle lens for guiding said observation light beam reflected by said reflector through said spectacle lens to said camera; and a drive motor for moving said reflector essentially transversely with regard to said illumination light beam.