Glass reflector for projector and manufacturing method for the same
AssigneeAsahi Techno Glass Corporation
InventorsNaomi Hirano, Hiroshi Momoi, Hiroyasu Nishio, Nobuhisa Takada
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Abstract
For example, the reflector according to the present invention is a reflector made of glass for a projector which is composed of amorphous glass whose thermal expansion coefficient is 30 to 45×10−7/° C. and includes a reflective surface for reflecting light emitted from a light source and an opening for inserting a light source bulb or a conductor to the light source bulb, in which the opening is smoothed by heat-treating the surface thereof after opening-drilling, thus mechanical damage is removed from the processed part.
Claims15
A reflector made of glass for a projector comprising amorphous glass having a thermal expansion coefficient of 30 to 45×10−7/° C. and including a reflective surface for reflecting light emitted from a light source and an opening for inserting a light source bulb or a conductor to said light source bulb, wherein said opening is smoothed by heat-treating the surface thereof after opening-drilling, thus mechanical damage is removed from a processed part.
A reflector made of glass for a projector comprising amorphous glass having a thermal expansion coefficient of 30 to 40×10−7/° C. and including a reflective surface for reflecting light emitted from a light source and an opening for inserting a light source bulb or a conductor to said light source bulb, wherein said opening is smoothed by applying a flame to the surface thereof by a burner after opening-drilling and the mean roughness of said smoothed surface is 0.03 μm or less.
A glass reflector with heat-resistance for a projector, comprising:
- a curved reflective surface portion for reflecting light emitted from a light source bulb;
- and
- an opening portion drilled through the curved reflective surface portion to insert the light source bulb or a conductor to the light source bulb, wherein the glass reflector is made of amorphous glass with thermal expansion coefficient of 30 to 45×10−7/° C., and the opening portion has a fire-polished surface with a mean roughness of 0.03 μm or less without mechanical damage.
Dependencies are inferred from the claim text.