Viavi Solutions Inc.

Jds Uniphase Corporation

Other

Forschungszentrum Julich Gmbh

Georg J Ockenfuss

Richard Alan Bradley, Jr

Marius Grigonis

Markus Bilger

Karen Denise Hendrix

Scott Rowlands

Markus K Tilsch

Tim Gustafson

Jeffrey James Kuna

Andrew Clark

James Switzer, Iii

Richard Ian Seddon

Robert E Klinger

Jerry Zieba

Jinhui Yang

Andy Shkabko

Steven David Oliver

Anthony D McGettigan

Jeremy Hayes

Adam Preuss

Richard A Bradley

Robert E Hahn

Roger Wordenweber

Frederik Kevin Zernik

Adam Bergeron

Nicolas Alexander Davis

Anthony Jay Kemp Cottrell

Neil Pinkerton

Eric Nybank

Yinxiang Xia

Donggong Peng

Zhao Yuan

Wilfried Klein

Jens Schneider

James Switzer

James Switzer Iii

James Iii Switzer

Iii Switzer James

An optical filter may include a set of optical filter layers disposed onto a substrate. The set of optical filter layers may include a first subset of optical filter layers comprising a first material with a first refractive index. The first material may comprise at least silicon and hydrogen. The set of optical filter layers may include a second subset of optical filter layers comprising a second material with a second refractive index. The second material is different from the first material and the second refractive index is less than the first refractive index. The set of optical filter layers may include a third subset of optical filter layers comprising a third material different from the first material and the second material.

Optical filter

An optical interference filter includes a substrate and a plurality of sets of layers that are disposed over the substrate. Each set of layers includes: a first layer that comprises at least a first oxide; a second layer disposed over the first layer that comprises at least a second oxide; and a third layer disposed over the second layer that comprises at least hydrogen and silicon. The optical interference filter may be configured to transmit light associated with a first spectral range (e.g., from 585 nanometers to 700 nanometers) and to block light associated with a second spectral range (e.g., from 440 nanometers to 475 nanometers). The third layer may have an extinction coefficient for the second spectral range that is greater than four times an extinction coefficient of the third layer for the first spectral range.

Optical interference filter

An induced transmission filter may include a set of optical filter layers. The set of optical filter layers may include a first subset of optical filter layers comprising a first material with a first refractive index, the first material comprising at least silicon and hydrogen. The set of optical filter layers may include a second subset of optical filter layers comprising a second material with a second refractive index. The second material may be different from the first material and the second refractive index may be less than the first refractive index. The second material may include at least silver.

Induced transmission filter with hydrogenated silicon, silver, and silicon dioxide

An optical filter, a sensor device including the optical filter, and a method of fabricating the optical filter are provided. The optical filter includes one or more dielectric layers and one or more metal layers stacked in alternation. The metal layers are intrinsically protected by the dielectric layers. In particular, the metal layers have tapered edges that are protectively covered by one or more of the dielectric layers.

Metal-dielectric optical filter, sensor device, and fabrication method

A sputtering system may include a substrate. The sputtering system may include at least one target. The at least one target may include at least one coating material to coat at least one layer onto the substrate. The at least one coating material may be sputtered onto the substrate in a presence of an inert gas. The inert gas may include argon gas and helium gas.

Argon-helium based coating

A sensor window may include a substrate and a set of layers disposed onto the substrate. The set of layers may include a first subset of layers of a first refractive index and a second set of layers of a second refractive index different from the first refractive index. The set of layers may be associated with a threshold transmissivity in a sensing spectral range. The set of layers may be configured to a particular color in a visible spectral range and may be associated with a threshold opacity in the visible spectral range.

Optical filter comprising a sensor window to provide a transmissivity of less than 5% between approximately 400 nm and approximately 780 nm and a blocker to block transmission at less than approximately 1000 nm

Sensor window

A device may include a filter array disposed on a substrate. The filter array may include a first mirror disposed on the substrate. The filter array may include a plurality of spacers disposed on the first mirror. A first spacer, of the plurality of spacers, may be associated with a first thickness. A second spacer, of the plurality of spacers, may be associated with a second thickness that is different from the first thickness. A first channel corresponding to the first spacer and a second channel corresponding to the second spacer may be associated with a separation width of less than approximately 10 micrometers (μm). The filter array may include a second mirror disposed on the plurality of spacers.

Optical filter array

A device may include a multispectral filter array disposed on the substrate. The multispectral filter array may include a first metal mirror disposed on the substrate. The multispectral filter may include a spacer disposed on the first metal mirror. The spacer may include a set of layers. The spacer may include a second metal mirror disposed on the spacer. The second metal mirror may be aligned with two or more sensor elements of a set of sensor elements.

Metal mirror based multispectral filter array of optical sensor device

In some implementations, an optical interference filter includes a substrate; and a set of layers that are disposed on the substrate, wherein the set of layers includes: a first subset of layers; and a second subset of layers; wherein: each of the first subset of layers includes an aluminum nitride (AlN) material, a stress of each of the first subset of layers is between −1000 and 800 megapascals, the first subset of layers has a first refractive index with a first value, each of the second subset of layers includes at least one other material, the second subset of layers has a second refractive index with a second value that is different than the first value, and the optical interference filter has an effective refractive index greater than or equal to 95% of a highest value of the first value and the second value.

Optical interference filter with aluminum nitride layers

An optical filter having a passband at least partially overlapping with a wavelength range of 800 nm to 1100 nm is provided. The optical filter includes a filter stack formed of hydrogenated silicon layers and lower-refractive index layers stacked in alternation. The hydrogenated silicon layers each have a refractive index of greater than 3 over the wavelength range of 800 mn to 1100 nm and an extinction coefficient of less than 0.0005 over the wavelength range of 800 nm to 1100 nm.

Optical filter and sensor system

An optical filter may include a substrate. The optical filter may include a first mirror and a second mirror. Each of the first mirror and the second mirror may include a plurality of quarterwave stacks. The plurality of quarterwave stacks may include a plurality of layers comprising a first material, a second material, and a third material. The optical filter may include a spacer disposed between the first mirror and the second mirror.

Multispectral filter

In some implementations, an optical interference filter includes a substrate; and a set of layers that are disposed on the substrate. The set of layers includes a first subset of layers, wherein the first subset of layers comprises an aluminum nitride (AlN) material; and a second subset of layers, wherein the second subset of layers comprises a hydrogenated silicon (Si:H) material.

An optical filter may include a first group of layers. The first group of layers may include alternating layers of a first dielectric material, of a group of dielectric materials, and a second dielectric material of the group of dielectric materials. The optical filter may include a second group of layers. The second group of layers may include alternating layers of a third dielectric material, of the group of dielectric materials, and a fourth dielectric material of the group of dielectric materials. The optical filter may include a third group of layers. The third group of layers may include alternating layers of a fifth dielectric material, of the group of dielectric materials, a sixth dielectric material, of the group of dielectric materials, and a metal material. The third group of layers may be disposed between the first group of layers and the second group of layers.

Induced transmission filter comprising a plurality of dielectric layers and a plurality of metal layers associated with a drop in peak transmission in a passband from approximately 78% at an angle of incidence of approximately 0 degrees to approximately 70% at an angle of incidence of approximately 50 degrees

Growing community of inventors

Santa Rosa, CA, United States of America

Georg J Ockenfuss