System and method for decoration inspection on transparent media

摘要

There is provided a system for inspecting an edge area of a transparent media, the transparent media having a decoration on a surface, the system includes: an illuminator to direct light to the transparent media for inspection, wherein the illuminator directs light to the transparent media at an oblique angle relative to a surface of the transparent media which is opposite the surface with the decoration; an optical element to capture light transmitted through the transparent media; and a sensor to obtain an image from the light captured by the optical element. There is also provided a method for inspecting an edge area of a transparent media, where the transparent media has a decoration on a surface.

主权项

1. A system for inspecting a shaped edge area of a transparent media, the transparent media having a decoration on a surface comprising the shaped edge area, the system comprising:
an illuminator to direct light to the transparent media for inspection, wherein the illuminator directs light to the transparent media at an oblique angle relative to a surface of the transparent media which is opposite the shaped edge area of the surface with the decoration, wherein the illuminator is configurable to vary the intensity of the directed light to uniformly illuminate the shaped edge area of the transparent media; a polarizer between the illuminator and the transparent media to modify the polarity of the light from the illuminator to provide p-polarized light or s-polarized light based on the edge orientation of the transparent media; a formatter between the illuminator and the transparent media that constrains the angular distribution of the light which illuminates the transparent media; an optical element to capture light transmitted through the transparent media; and a sensor to obtain an image from the light captured by the optical element.