Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Chao-Shun Chen0
Sung-Nan Chen0
Long-Sheng Liao0
Ya-Ling Hsu0
Date of Patent
November 8, 2011
0Patent Application Number
126105980
Date Filed
November 2, 2009
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A lens adapted to image a first image plane at a reduced side onto a magnified side is provided. The lens has an optical axis. The lens includes a lens group and a concave reflective mirror. The lens group is disposed in the light path between the reduced side and the magnified side. The concave reflective mirror is disposed in the light path between the lens group and the magnified side. The offset of the first image plane with respect to the optical axis is greater than 100%. The throw ratio of the lens is less than 0.3.
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