US Patent Application 18319701. AZIMUTHALLY ANISOTROPIC POLARIZATION SENSITIVE OPTICAL FILTER simplified abstract

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AZIMUTHALLY ANISOTROPIC POLARIZATION SENSITIVE OPTICAL FILTER

Organization Name

3M INNOVATIVE PROPERTIES COMPANY

Inventor(s)

Bharat R. Acharya of Woodbury MN (US)

John A. Wheatley of Stillwater MN (US)

Andrew J. Carlson of Eagan MN (US)

AZIMUTHALLY ANISOTROPIC POLARIZATION SENSITIVE OPTICAL FILTER - A simplified explanation of the abstract

This abstract first appeared for US patent application 18319701 titled 'AZIMUTHALLY ANISOTROPIC POLARIZATION SENSITIVE OPTICAL FILTER

Simplified Explanation

The patent application describes an optical construction that includes an optical film placed between two prismatic films.

  • The prismatic films consist of parallel, linear prisms with opposing sides meeting at a peak.
  • The prisms are angled and positioned in a way that the peaks face away from each other and the optical film.
  • When collimated light is incident on the construction, it transmits at least 1% of the light at an oblique angle greater than 5 degrees with respect to the optical film.
  • The optical film has an optical transmission of less than about 1% for a specific wavelength range and polarization states.


Original Abstract Submitted

An optical construction includes an optical film between first and second prismatic films, which each include pluralities of parallel, linear first and second prisms. Each of the first and second prisms have opposing first and second sides extending from first and second ends of a base of the prism and meeting at a peak. The first and second sides make first and second base angles with the base of the prism. The peaks of the prismatic films face away from each other and the optical film. For a collimated, normally incident light, for at least a first wavelength in a first wavelength range, and for each of first and second polarization states: the optical film has an optical transmission of less than about 1%, and the optical construction transmits at least 1% of the incident light at an oblique angle greater than 5 degrees with respect to the optical film.

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