The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 17, 2011
Filed:
May. 05, 2006
Henry A. Blauvelt, San Marino, CA (US);
David W. Vernooy, Sierra Madre, CA (US);
Henry A. Blauvelt, San Marino, CA (US);
David W. Vernooy, Sierra Madre, CA (US);
HOYA Corporation USA, San Jose, CA (US);
Abstract
An optical apparatus comprises: a substrate; an optical device, an optical waveguide, or an optical element on the first substrate surface; a reflection-suppressing layer on a second substrate surface opposite the first substrate surface; and an absorbing layer on the reflection-suppressing layer, so that over at least a portion of the second substrate surface the reflection-suppressing layer is between the second substrate surface and the absorbing layer. The absorbing layer absorbs light over at least a portion of an operative wavelength range of the optical apparatus, while the reflection-suppressing layer suppresses reflection from the second substrate surface of light over at least a portion of the operative wavelength range of the optical apparatus to a reflectivity value below that of the second substrate surface with only the absorbing layer present.