Appeal No. 2007-0467 Page 5
Application No. 10/646,929
The combination of Takizawa, Yaamoto and Harooni:
Claims 12 and 15 stand rejected under 35 U.S.C. § 103 as being
unpatentable over the combination of Takizawa, Yamamoto and Harooni.
For clarity we reproduce Takizawa’s Figures 3 and 4 below:
Takizawa discloses a slit lamp having a slit illumination system, a
binocular microscopic system and a photographing system, for observation of the
endothelial cells of the cornea. Takizawa, abstract. The microscopic system
includes an objective lens 11 and variable power lenses 12a and 12b. Takizawa,
column 2, lines 66-68. According to Takizawa, the variable power lenses 12a
and 12b
are placed at the back of the objective lens 11 and form a pair of
parallel optical paths. The rays of light passing through the variable
power lenses 12a, 12b then pass through lenses 13a, 13b and
erecting Porro prisms 14a, 14b and form images on imaging faces
15a, 15b, which are observed through oculars 16a, 16b,
respectively.
Takizawa, column 2, line 68 – column 3, line 6, emphasis removed. Takizawa
teaches that the
variable power lenses 12a and 12b are fitted onto a rotary member
21 which is turnably fitted onto a lens-barrel 20 around an axis
which is at right angles to the optical axis. When this rotary
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