Optical Filters Complementary Angular Blocking Regions

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United States of America

SERIAL NO

16341639

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Abstract

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An example optical filter may include an angle blocking layer Slaving a first angular light blocking range θAL relative to a normal axis, and an interference filter adjacent the angle blocking layer having a second angular light blocking range θIF relative to the normal axis. θIF and θAL at least partially overlap. The example optical filter has a predetermined light transmission zone comprising angles from 0° to a maximum light transmission angle θTmax relative to a normal axis of the major surface. The example optical filter has a predetermined angular light blocking zone θB, a union of θIF and θAL. An example optical filter may include an interference filter having an incidence angle-dependent reflection band and an absorbing layer having an absorption band. The incidence angle-dependent reflection band and the absorption band may overlap at least one wavelength at least one angle of incidence.

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Patent Owner(s)

Patent OwnerAddress
3M INNOVATIVE PROPERTIES COMPANYP O BOX 33427 ST PAUL MN 55133-3427

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Benoit, Gilles J Minneapolis, US 38 168
Biernath, Rolf W Wyoming, US 76 1358
Du, Guanglei Painted Post, US 27 17
Wheatley, John A Stillwater, US 189 7645

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