Patents by Inventor Muhammad Nadeem Akram

Muhammad Nadeem Akram has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Speckle reduction
    Patent number: 9235060
    Abstract: Speckle reduction apparatus includes a radiation path and a mask arranged within the radiation path. The mask includes an array of electrically controllable cells configured to form a pattern on the mask that varies with time. The speckle reduction mask includes a first linear array including first parallel lines arranged to change the phase of incident radiation, and a second linear array including second parallel lines arranged to change the phase of incident radiation and further arranged such that cells are formed at the intersections of the first parallel lines and the second parallel lines. The speckle reduction mask includes a N1×N2 array of cells, A, formed according to: ATA=??k,l, where AT is the transpose of A, ? is a real and positive constant, dk,l is Kronecker delta and N1?N2.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: January 12, 2016
    Assignee: HOGSKOLEN I BUSKERUD OG VESTFOLD
    Inventors: Zhaomin Tong, Wenhong Gao, Xuyuan Chen, Muhammad Nadeem Akram, Ouyang Guangmin, Kaiying Wang
  • METHOD FOR REDUCING SPECKLES AND A LIGHT SOURCE USED IN SAID METHOD
    Publication number: 20150070659
    Abstract: A method of reducing speckle effects in a projected image which is displayed on a display surface, comprising the steps of splitting an incident beam into one reference beam and one modulation beam; modulating said modulation beam with a modulation unit so as to produce a modulated beam; recombining the modulated beam and the reference beam onto a diffuser; and deflecting the recombined beam so as to project said image onto said display surface.
    Type: Application
    Filed: September 10, 2013
    Publication date: March 12, 2015
    Applicant: Lemoptix SA
    Inventors: Xuyuan Chen, Zhaomin Tong, Muhammad Nadeem Akram
  • SPECKLE REDUCTION
    Publication number: 20110216390
    Abstract: Speckle reduction apparatus includes a radiation path and a mask arranged within the radiation path. The mask includes an array of electrically controllable cells configured to form a pattern on the mask that varies with time. The speckle reduction mask includes a first linear array including first parallel lines arranged to change the phase of incident radiation, and a second linear array including second parallel lines arranged to change the phase of incident radiation and further arranged such that cells are formed at the intersections of the first parallel lines and the second parallel lines. The speckle reduction mask includes a N1×N2 array of cells, A, formed according to: ATA=??k,l, where AT is the transpose of A, ? is a real and positive constant, dk,l is Kronecker delta and N1?N2.
    Type: Application
    Filed: March 2, 2011
    Publication date: September 8, 2011
    Applicant: Vestfold University College
    Inventors: Zhaomin Tong, Wenhong Gao, Xuyuan Chen, Muhammad Nadeem Akram, Ouyang Guangmin, Kaiying Wang