Projection lens unit
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United States of America Patent
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-
Nov 29, 2011
Grant Date -
Jul 15, 2010
app pub date -
Dec 23, 2009
filing date -
Jan 14, 2009
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A projection lens unit includes: a projection lens having a first optical system for focusing incident image light and also having a second optical system for magnifying and projecting the image light focused by the first optical system; a lens barrel member for accommodating the projection lens and having a small diameter portion in which a joining portion of the first and the second optical system is formed to be the thinnest; a holding member having a first holding face on which the small diameter portion is mounted; and a presser member having a second holding face which holds the small diameter portion together with the first holding face. The holding member is fixed to a housing on which the projection lens unit is mounted. The presser member does not protrude upward from the lens barrel member arranged in a dead space of the small diameter portion.
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