Optical low pass filter utilizing a phase grating

Details Optical low pass filter utilizing a phase grating Optical low pass filter utilizing a phase grating

G - Physics

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G02B 5/18 (2006.01) G02B 6/10 (2006.01) G02B 6/124 (2006.01) H04N 9/07 (2006.01)

Patent

CA 1272629

ABSTRACT OF THE DISCLOSURE An optical low pass filter including a phase grating, wherein the grating is implanted inwardly from the surface of a substrate, the grating having a uniform repetitive period and having a refractive index different from that of the substrate.

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