Appeal No. 1998-0160
Application No. 08/529,330
BACKGROUND
The invention is directed to a combined day and night sighting apparatus, which
may be further combined with a laser rangefinder apparatus. Claim 1 is reproduced
below.
1. An integrated day and night sighting system comprising:
a daylight optical system having daylight optics for collecting and focusing
visible light from an objective lens onto an eyepiece lens assembly in a daylight
path between said objective lens and said eyepiece lens assembly;
a night light corrector lens mounted adjacent said daylight objective lens,
said night correction lens including a pair of tilted lens elements to compensate for
astigmatism;
an image converter for night light use and being movably supported for
movement into and out of the daylight light path between a daylight position out of
the light path and a night light position in the light path, said image converter being
positioned for said eyepiece lens assembly to focus thereon when said image
converter is in said light path;
a night reticle display positioned between said image converter and said
eyepiece lens assembly;
a night light primary mirror positioned to reflect light from said night light
corrector lens; and
a night light secondary mirror positioned to receive light from said night
primary objective mirror and to focus the light onto said image converter when said
image converter is in a night light position, whereby an integrated night and day light
optical system is provided in a compact packaging.
The examiner relies on the following references:
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