Basic Principles of Light Polarization Lecture #17

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Presentation transcript:

Basic Principles of Light Polarization Lecture #17 Thanks to Yoav Schechner, Nayar, Larry Wolff

Polarization Photography Reduce Sun Glare Reduce Reflections Darkens Sky Increase Color Saturation Reduce Haze

Polarization Photography Without Polarizer With Polarizer Provides better Color Saturation Darkens the sky

Polarization Photography Without Polarizer With Polarizer

Polarization Photography : Scattering Haze De-hazed

Polarization Photography : Wide Angle Lenses Vignetting of the Sky

Polarization Photography : Reflections Reduce Reflections

Polarization Photography : Reflections Reduce Reflections

Polarization Photography : Reflections Many titled planes

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Polarization Photography : Underwater Underwater pipelines and communication Offshore structures Offshore drilling rigs Vessel inspection Underwater ROV/AOV Marine biology Recreational photography Marine archaeology Underwater mapping

Birefrengence Interference pattern due to different refractive indices

Classification of Polarization Linear : Two orthogonal plane waves with same phase but possibly different amplitudes. Circular: Two orthogonal plane waves with 90 deg phase shift but same amplitudes. Elliptical: Possibly any degree phase shift with different amplitudes.

Linear Polarization

Circular Polarization

Elliptical Polarization

Crossed Polarizers

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Polarized Sunglasses Reduce glare off the roads while driving