Appeal No. 1997-1766
Application No. 08/245,033
reduction, the mechanism of the lens unit will become
complicated, and this is not preferable. Appellant also
discloses that for the simplification of the mechanism of the
whole five-lens system, displacement means for effecting
vibration reduction is provided in the second lens unit. On
page 20 of the specification, Appellant discloses that in each
of the embodiments, the second lens unit G2 is designed to be
movable along the direction substantially orthogonal to the
optical axis. Thus, Appellant clearly has disclosed that his
invention lies in the discovery of decentering only the second
group of lenses in the five-group lens of a zoom lens system.
Turning to the references, we note that Ogawa discloses a
zoom lens system having five separate lens units. However, we
note that Ogawa is completely silent as to the problem of
preventing image shake or any means for compensating for such
image shake. Similarly, we note that Ishii discloses a zoom
lens system having five separate lens units. However, Ishii
is also silent to the problem of preventing image shake or
disclosure to any means for preventing image shake.
For the teachings of preventing image shake, the Examiner
has provided us with a variety of combinations using Yamazaki,
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