Appeal No. 95-3797
Application 07/975,764
real image plane is fixedly located at a
focal plane of the eyepiece lens and can be
viewed through the eyepiece lens; the real
image viewfinder further including a
display, located at the second real image
plane, that displays data items that can be
viewed through the eyepiece lens.
[Examiner’s Answer at page 4]
The examiner relies on Asano for teaching (1) “a
stationary semi-transparent reflecting surface (6) that
permits the second optical path (optical axis Z) to extend
from the eyepiece through the semi-transparent reflecting
surface to the second real image plane (window plate 18)”,
(2) “that the display items (data carrying plate 12 and bright
frame S) can be viewed through the eyepiece lens” and (3)
“that the display can be solely illuminated by light passing
through the viewfinder along the second optical path.
(Examiner’s Answer at pages 4-5)” The examiner concludes:
Given the teachings of Asano et al, it
would have been obvious to one having
ordinary skill in the art to modify the
fourth reflecting surface (M4) of Bentensky
et al to define a second undeviated
straight optical path which extend[s]
through the viewfinder from the eyepiece
lens such that a display is fixedly located
at a focal plane of eyepiece lens for the
purpose of viewing data display through the
eyepiece with the view of the object to be
photographed observed through the objective
-5-5
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Last modified: November 3, 2007