公开(公告)号：US20220003905A1

公开(公告)日：2022-01-06

申请号：US16918698

申请日：2020-07-01

Applicant: VIAVI SOLUTIONS INC.

Inventor： Jeffrey James KUNA ,  Paul Thomas KOHLMANN ,  Johannes P. SEYDEL ,  Richard Alan BRADLEY, JR.

IPC: G02B5/24 ,  G02B1/115 ,  C23C14/06 ,  C23C14/08

Abstract: An article including a stack of layers including a high refractive index layer and a low refractive index layer; wherein at least one layer of the stack includes a wavelength selective absorbing material; and wherein the stack of layers has a transparent region with an edge at a wavelength in which light is absorbed by the wavelength selective absorbing material, and a reflection band with an edge at a wavelength in which light is reflected is disclosed. Compositions and optical devices including the article are also disclosed. Additionally, there is disclosed a method of making the article, the composition, and the optical device.

公开(公告)号：US20190165024A1

公开(公告)日：2019-05-30

申请号：US16240560

申请日：2019-01-04

Applicant: VIAVI SOLUTIONS INC.

Inventor： Richard Alan BRADLEY, JR. ,  Karen Denise HENDRIX ,  Jeffrey James KUNA ,  Georg J. OCKENFUSS

IPC: H01L27/146

Abstract: An optical sensor assembly is provided in which a dark mirror coating is used to suppress stray light in the form of both unwanted reflections from non-optically active regions of the sensor assembly surface and unwanted transmission of light into the surface region of the sensor assembly. The sensor assembly includes an image sensor positioned in a substrate adjacent to substrate surface areas that are not optically active. A dark mirror coating covering those surface areas significantly reduces reflections from non-optically active surface regions and improves image sensor performance in terms of signal-to-noise ratio and reduction in the appearance of “ghost” images, in turn enhancing the accuracy and precision of the sensor. The dark mirror coating may in the alternative, or in addition, be positioned underneath an optical filter, depending on the structure, material, and requirements of a particular sensor assembly.