Appeal No. 2003-1483
Application No. 09/591,661
quality such as spherical aberrations, coma, field curvature and
astigmatism.
Representative independent claim 1 is reproduced as follows:
1. A wide-angle catoptric system comprising,
successively from an object, a secondary reflecting mirror
having a concave surface, a primary reflecting mirror having
a convex surface and a tertiary reflecting mirror having a
concave surface wherein images are formed by reflecting a
luminous flux incident from the object at said primary
reflecting mirror, said secondary reflecting mirror and said
tertiary reflecting mirror successively; and a diaphragm
arranged in close proximity to said primary reflecting
mirror so as to have an optical axis, which is a straight
line connecting a curvature center of said primary
reflecting mirror to a curvature center of said secondary
reflecting mirror, pass through a center of the diaphragm;
wherein said tertiary reflecting mirror has a center of
curvature thereof decentered from said optical axis in a
direction of lesser astigmatism.
The Examiner relies on the following prior art references:
Abel 3,811,749 May 21, 1974
Frasher et al. (Frasher) 4,130,757 Dec. 19, 1978
Cook 4,964,706 Oct. 23, 1990
Admitted prior art, specification pages 1 and 2 and Figure 5.
Claims 1-5, 9-12 and 14 stand rejected under 35 U.S.C.
§ 103(a) as being unpatentable over the admitted prior art and
Cook.
Claims 6 and 7 stand rejected under 35 U.S.C. § 103(a) as
being unpatentable over the admitted prior art and Cook and
further in view of Abel.
2
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