| US 7,575,798 B2 | ||
| Optical element with an opaque chrome coating having an aperture and method of making same | ||
| Robert A. Bellman, Painted Post, N.Y. (US); Ljerka Ukrainczyk, Painted Post, N.Y. (US); Jose M. Quintal, Campbell, N.Y. (US); and Paul A. Sachenik, Corning, N.Y. (US) | ||
| Assigned to Corning Incorporated, Corning, N.Y. (US) | ||
| Filed on Aug. 05, 2005, as Appl. No. 11/198,712. | ||
| Application 11/198712 is a continuation in part of application No. 10/971611, filed on Oct. 21, 2004, granted, now 7,459,095. | ||
| Prior Publication US 2006/0088773 A1, Apr. 27, 2006 | ||
| Int. Cl. B32B 3/24 (2006.01) | ||
| U.S. Cl. 428—138 [428/209; 430/4; 430/5] | 19 Claims |
| 1. An article comprising:
a substrate;
an opaque chrome coating having an optical density greater than or equal to 3 formed on a surface of the substrate and etched
to form an aperture within the coating,
wherein chrome in the aperture is below detectable limit and the edge of the chrome coating defining the circumference of
the aperture is sloped at an acute angle in a range from 10° to less than 15°.
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