Reflector, projective display and projector
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United States of America Patent
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Apr 3, 2007
Grant Date -
Mar 3, 2005
app pub date -
Aug 18, 2004
filing date -
Aug 18, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
It is an object of the present invention to provide a reflector made of heat-resistant glass. It is another object of the present invention to provide a projective display which uses the reflector.A projector device having: a light source emitting white light; a reflector reflecting a light emitted from the light source; a light valve modulating illumination beam of light; and a projective lens projecting image light from the light valve, wherein the reflector is made of a glass containing SiO.sub.2 as a major ingredient and at least one rare-earth element selected from the group consisting of Sc, Y, La, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, and the glass has a thermal expansion coefficient lower than 40.times.10.sup.-7/.degree. C. and a transition temperature higher than 500.degree. C.
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