Optical magnifier apparatus
Patent 5087112 Issued on February 11, 1992. Estimated Expiration Date: 
July 19, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 19, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1784168 2087081 2092672 2905054 3600064 Light reflecting magnifier Light fixture, light aperture and method of uniformly illuminating an optically diffusive viewing area Diffusing plate Illuminated jeweler's loupe Hand-held magnifier apparatus Patent #: 4859032 InventorAssigneeApplicationNo. 554472 filed on 07/19/1990US Classes:359/800, Illumination through lens359/798, With viewed object or viewed field illumination359/802, Magnifier359/805, On lens supporting handle359/818With clamp or gripExaminersPrimary: Arnold, Bruce Y.Assistant: Nguyen, Thinh Attorney, Agent or FirmForeign Patent References
International ClassesG02B 027/02G02B 007/02 AbstractA magnifying assembly of the type employing a lens surrounded by a plastic or metal holding is placed in a light diffuser, which light diffuser is an annular member having an open top which is associated with a peripheral flange upon which the magnifying lens rests. The member has a bottom opening which is associated with an annular curved flange which is abraded so as to uniformly diffuse light over the surface of a document to be read whereby the area enclosed by the bottom opening of the annual member is uniformly illuminated by a light source.Field of SearchLIGHT SOURCE (OR SUPPORT THEREFOR) AND MODIFIERPlural serial lens elements or components Including translucent or transparent modifier Translucent or opaque (e.g., "shade") Collapsible or folding Including socket engaging means Louvered or grid type Diffusing type Hollow body open at both sides Including cloth covering HOUSING Frame with multiple light-transmitting panels | |
