Photocopying – Projection printing and copying cameras – Illumination systems or details
Reexamination Certificate
2005-02-15
2005-02-15
Rutledge, D. (Department: 2851)
Photocopying
Projection printing and copying cameras
Illumination systems or details
C355S071000, C359S649000, C359S656000, C359S725000, C359S727000
Reexamination Certificate
active
06856377
ABSTRACT:
This invention provides a relay imaging optical system which is composed of a small number of lenses and can be miniaturized and reduced in weight with maintaining required optical characteristics. This relay imaging optical system is provided for forming an image of a first plane (10) on a second plane (M), and comprises a first lens group G1 which is constructed so that an image plane thereof is positioned within a limited range, a second lens group G2, and a third lens group G3, from the first plane side. At least two lens groups of the first lens group through the third lens group have at least one aspheric surface respectively; and the total number of lenses which constitute this optical system are ten or fewer.
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Nikon Corporation
Oliff & Berridg,e PLC
Rutledge D.
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