Method for applying shading coatings to lamps
Patent 6287163 Issued on September 11, 2001. Estimated Expiration Date: 
November 30, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 30, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesUltraviolet metal vapor laser having hard sealed internal mirrors Patent #: 5012479 InventorsAssigneeApplicationNo. 726844 filed on 11/30/2000US Classes:445/22, Combined, e.g., with shaping of lamp or device envelope427/376.2, Metal oxide- or silicon-containing coating (e.g., glazed, vitreous enamel, etc.)445/58With coating, e.g., providing protective coating on sensitive areaExaminersPrimary: Ramsey, Kenneth J.Attorney, Agent or FirmForeign Patent References
International ClassH01J 061/35Foreign Application Priority Data1998-02-04 JPAbstractA greensheet comprising an inorganic pigment and an inorganic matrix component is applied to a surface of a glass substrate and fired for fixing. The formed shading film has a portion whose thickness is 90% or more of the maximum thickness of the shading film within the range of 0.5 mm from an edge of the shading film. Thus, a shading film that has distinct end faces and has an excellent thickness uniformity can be formed with a good positional accuracy. Therefore, a lamp having a highly precise light distribution property can be obtained. In addition, a lamp having such a property can be obtained with a few steps and at a low cost. | |
