Optical: systems and elements – Diffraction – From grating
Reexamination Certificate
2006-07-11
2006-07-11
Amari, Alessandro (Department: 2872)
Optical: systems and elements
Diffraction
From grating
C359S569000
Reexamination Certificate
active
07075722
ABSTRACT:
In a diffractive optical element and a polarization separation element using this diffractive optical element, incident light can be effectively separated for the respective polarization directions over the entire used wavelength range. The diffractive optical element is arranged such that the diffractive optical element has a grating structure in which at least two blazed type grating portions are successively arranged along a light traveling direction. Additionally, in at least one grating portion of the two blazed type grating portions, structures smaller than a used wavelength are arranged in a periodic manner.
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Amari Alessandro
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
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