Illumination device
Patent 5323302 Issued on June 21, 1994. Estimated Expiration Date: 
February 26, 2013. 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.
February 26, 2013. 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 ReferencesDimmable headlight Lamp arrangement for motor vehicle Patent #: 5186533 InventorsAssigneeApplicationNo. 023586 filed on 02/26/1993US Classes:362/308, Refractor362/328, Reflector separate from refractor362/520Refractor structureExaminersPrimary: Husar, Stephen F.Attorney, Agent or FirmForeign Patent References
International ClassF21V 007/00Foreign Application Priority Data1992-05-12 DEAbstractAn illumination device comprises a light source, a reflector which reflects light emitted by the light source, a light disc, and a plurality of optically active elements arranged in a path of rays of the light reflected by the reflector for at least one of dispersing and deviating of the light, the optically active elements being formed as diffraction-optical elements and together forming a diffraction grating which is formed as a member which is separate from the light disc. | |
