Optics: measuring and testing – Fiducial instruments – Reticle lies outside viewing path
Reexamination Certificate
2011-03-29
2011-03-29
Lester, Evelyn A. (Department: 2873)
Optics: measuring and testing
Fiducial instruments
Reticle lies outside viewing path
C356S247000, C356S248000, C356S252000, C356S253000, C359S726000, C359S801000, C359S809000, C359S819000, C042S111000, C042S115000, C042S134000, C042S135000, C434S019000
Reexamination Certificate
active
07916290
ABSTRACT:
The invention is directed to a coaxially arranged, off-axis optical system for a sighting device or aiming device. It is the object of the invention to provide a possibility for constructing an optical system in such a way that the typical disadvantage with respect to the tightness of a sighting device in an open-type construction is overcome and a good flattening of the image field is achieved in addition to the high optical imaging quality of the aiming mark. According to the invention, by means of a coaxially arranged, off-axis optical system for a sighting device or aiming device comprising a lens group, wherein the lens facing the target object is constructed as a converging meniscus and the lens facing the eye is constructed as a diverging meniscus, with a dichroic reflector and an embodiment for the aiming mark, the above-stated object is met in that a correction lens with positive refractive power is arranged at a distance of less than 0.2-times the focal length relative to the aiming mark and acts exclusively in the beam path of the aiming mark, and in that the correction lens is inserted into the housing by positive locking and is sealed so that the housing with the aiming mark, with the associated mechanism and with the electronics in the interior is sealed relative to the environment.
REFERENCES:
patent: 3963356 (1976-06-01), Wiklund
patent: 4346995 (1982-08-01), Morris
patent: 5189555 (1993-02-01), Jorlov
patent: 5440387 (1995-08-01), Montelin et al.
patent: 5594584 (1997-01-01), Kay et al.
patent: 5724181 (1998-03-01), Negishi
patent: 6327806 (2001-12-01), Paige
patent: 24 62 506 (1977-09-01), None
patent: 298 22 897 (1999-06-01), None
patent: 20 2006 004 574 (2006-06-01), None
patent: 1 182 419 (2002-02-01), None
Analytik Jena AG
Duane Morris LLP
Lester Evelyn A.
LandOfFree
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