Lens substrate, a transmission screen and a rear projection device
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United States of America Patent
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Sep 4, 2007
Grant Date -
Apr 20, 2006
app pub date -
Oct 17, 2005
filing date -
Oct 20, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A lens substrate (microlens substrate 1) having a first surface and a second surface opposite to the first surface is disclosed. Light is allowed to enter the lens substrate from the first surface thereof and then exit from the second surface thereof. The lens substrate includes: a plurality of convex lenses (microlenses 21) formed on the first surface of the lens substrate from which the light is allowed to enter the lens substrate; and a colored portion 22 provided on the first surface of the lens substrate with the plurality of convex lenses. The colored portion 22 is constituted from a plurality of regions each having a different content by percentage of a coloring agent, and the plurality of regions are laminated in the thickness direction of the colored portion 22.
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