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:
Oct. 10, 1995
Filed:
May. 25, 1993
Samuel Lu, Agoura, CA (US);
Ming-Jau Sun, Woodland Hills, CA (US);
Alan F Stewart, Thousand Oaks, CA (US);
Anthony W Louderback, Eugene, OR (US);
Litton Systems, Inc., Beverly Hills, CA (US);
Abstract
A coating for an optical component is formed to be antireflective for a selected wavelength and resistive to the transmission of ultraviolet radiation. The coating has first layer is formed of a dielectric material having a refractive index n.sub.1 coated onto the optical component. A second layer is formed of a dielectric layer having a refractive index n.sub.2 that is smaller than the refractive index n.sub.1 of the first layer. The second layer is formed of a material that transmits the selected wavelength while blocking ultraviolet light, thereby protecting the first layer and the optical component from damage due to exposure to ultraviolet radiation. The thicknesses of the layers is selected so that the coating is antireflective for the selected wavelength.