Hologram writer and method
Patent 4498740 Issued on February 12, 1985. Estimated Expiration Date: 
April 18, 2003. 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.
April 18, 2003. 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 3698787 Method for producing a synthetic hologram Patent #: 4109996 InventorApplicationNo. 06/485828 filed on 04/18/1983US Classes:359/9, For synthetically generating a hologram359/900METHODSExaminersPrimary: Arnold, Bruce Y.Attorney, Agent or FirmInternational ClassesG03H 1/26 (20060101)G03H 1/30 (20060101) G03H 1/08 (20060101) AbstractA hologram is written from x, y, z data by presenting an information beam at a holographic medium with x and y coordinates represented by x and y position on the medium and z coordinates represented by distance between the holographic medium and a point position of the beam close to the medium, while simultaneously presenting a reference beam in interference with the information beam and of a size comparable with the size of the information beam at the holographic medium. The area of the information beam and the reference beam at any position on the holographic medium is a small fraction of the total area of the hologram. | |
