Illuminating device for providing an illumination beam with adjustable distribution of intensity and a pattern-transfer system comprising such a device
Patent 4370026 Issued on January 25, 1983. Estimated Expiration Date: 
September 8, 2000. 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.
September 8, 2000. 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 ReferencesDevice for coherent lighting of objects Textile treating composition Optical system for the production of a beam of light having a uniform intensity distribution Patent #: 4149773 InventorsAssigneeApplicationNo. 06/184817 filed on 09/08/1980US Classes:359/578, Electrically or mechanically variable (e.g., tunable, adjustable)355/71, Including shutter, diaphragm, polarizer or filter359/639, By refraction at beam splitting or combining surface362/259Laser typeExaminersPrimary: Henry, Jon W.Attorney, Agent or FirmInternational ClassG03F 7/20 (20060101)Foreign Application Priority Data1979-09-10 FRAbstractIlluminating device comprising a laser source providing a coherent beam with gaussian distribution of intensity and means for separating the initial beam into four parts along two orthogonal directions, means for recombining the four parts resulting in their partial superimposition in a predetermined plane and means for averaging the interferences produced in the plane by the four parts.Other References
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