Ultraviolet metal vapor laser having hard sealed internal mirrors Patent #: 5012479
ApplicationNo. 726844 filed on 11/30/2000
US 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 area
ExaminersPrimary: Ramsey, Kenneth J.
Attorney, Agent or Firm
Foreign Patent References
International ClassH01J 061/35
Foreign Application Priority Data1998-02-04 JP
AbstractA 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.