Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Reexamination Certificate
2008-07-28
2011-12-06
Amari, Alessandro (Department: 2872)
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
C355S067000
Reexamination Certificate
active
08072661
ABSTRACT:
The present invention provides a computer generated hologram which forms a light intensity distribution on a predetermined plane by giving a phase distribution to a wavefront of incident light, comprising an anisotropic layer whose refractive index with respect to linearly polarized light in a first direction is different from a refractive index of the anisotropic layer with respect to linearly polarized light in a second direction perpendicular to the linearly polarized light in the first direction, and an isotropic layer whose refractive index with respect to the linearly polarized light in the first direction is equal to a refractive index of the isotropic layer with respect to the linearly polarized light in the second direction.
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S. Tao et al., Optimized polarization-selective computer-generated hologram with fewer phase combinations,Optics Express, Jun. 2, 2003, pp. 1252-1257, vol. 11, No. 11.
Amari Alessandro
Canon Kabushiki Kaisha
Rossi Kimms & McDowell LLP
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