Patent ID: 8105499
Filing Date: 2012-01-31
Classification: G01N

Abstract:
1. A method for etching an item using a mask fixture, the method comprising steps of: placing the item on an etch-resistant window fitting entirely within a recessed center area of a bottom fixture of the mask fixture, wherein the etch-resistant window does not extend above the bottom fixture when situated in the recessed surface area; placing a top fixture over the bottom fixture, wherein the top fixture comprises a reservoir centered within the top fixture; coupling the top and bottom fixtures such that a tight seal is created around the item to be etched when the top and bottom fixtures are coupled; positioning a high intensity light source such that a light beam emanating from the high intensity light source projects upward through a small via centered within and intersecting both the top and bottom fixtures; projecting the high intensity light beam upwards through the small via; and etching the item with an etchant.