Optical: systems and elements – Diffraction – From grating
Reexamination Certificate
2005-09-28
2009-12-29
Amari, Alessandro (Department: 2872)
Optical: systems and elements
Diffraction
From grating
Reexamination Certificate
active
07639422
ABSTRACT:
The invention relates to a device for generating a periodical array of light spots from an input light beam, said device comprising—a periodical array of apertures (202) forming a plurality of interlaced sub-arrays of apertures,—phase shifter elements (PS;) placed in front of said apertures for imposing a phase shift to said input light beam so that each light spot is constructed as the superposition of a plurality of light spots generated by said plurality of interlaced sub-arrays of apertures. Use: Light spot generation.
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By M.V. Berry et al. Entitled: Integer, Fractional and Fractal Talbot Effects; H.H. Wills Physics Laboratory, Bristol, England; Feb. 21, 1996 revision received Mar. 12, 1996; Journal of Modern Optics, 1996; vol., 43, No. 10,2139-2164; pp. 2139-2164.
Amari Alessandro
Koninklijke Philips Electronics , N.V.
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