公开(公告)号：US10222325B2

公开(公告)日：2019-03-05

申请号：US15613315

申请日：2017-06-05

Applicant: Viavi Solutions Inc.

Inventor： Curtis R. Hruska ,  Charles A. Hulse ,  Brett J. Bryars ,  Marc K. Von Gunten ,  Christopher G. Pederson ,  Nada A. O'Brien ,  Jerry Zieba ,  Benjamin F. Catching

IPC: G01N21/35 ,  G01N21/359 ,  G01J3/02 ,  G01J3/10 ,  G01J3/26 ,  G01J3/42 ,  G01J5/08 ,  G01J3/12

Abstract: A portable spectrometer device includes an illumination source for directing at a sample, and a tapered light pipe (TLP) for capturing light interacting with the sample at a first focal ratio and for delivering the light at a second focal ratio lower than the first focal ratio. A linearly variable filter (LVF) separates the captured light into a spectrum of constituent wavelength signals; and a detector array, including a plurality of pixels, each of the plurality of pixels disposed to receive at least a portion of a plurality of the constituent wavelength signals provides a power reading for each constituent wavelength. Preferably, the TLP is lensed at one end, and recessed in a protective boot with stepped inner walls. The gap between the TLP and LVF is minimized to further enhance resolution and robustness.

公开(公告)号：US09945790B2

公开(公告)日：2018-04-17

申请号：US14819179

申请日：2015-08-05

Applicant: Viavi Solutions Inc.

Inventor： Benjamin F. Catching ,  Marc K. Von Gunten ,  Curtis R. Hruska ,  Paula Smith ,  Paul G. Coombs

IPC: G01N21/85 ,  G01J3/02 ,  G01J3/12 ,  G01N21/27

CPC classification number: G01N21/85 ,  G01J3/0289 ,  G01J3/0291 ,  G01J3/12 ,  G01J2003/123 ,  G01J2003/1234 ,  G01N21/27 ,  G01N21/8507 ,  G01N2201/061 ,  G01N2201/062 ,  G01N2201/068

Abstract: Increasing the precision of process monitoring may be improved if the sensors take the form of travelling probes riding along with the flowing materials in the manufacturing process rather than sample only when the process moves passed the sensors fixed location. The probe includes an outer housing hermetically sealed from the flowing materials, and a light source for transmitting light through a window in the housing onto the flowing materials. A spatially variable optical filter (SVF) captures light returning from the flowing materials, and separates the captured light into a spectrum of constituent wavelength signals for transmission to a detector array, which provides a power reading for each constituent wavelength signal.

公开(公告)号：US12135239B2

公开(公告)日：2024-11-05

申请号：US17581103

申请日：2022-01-21

Applicant: VIAVI Solutions Inc.

Inventor： Paula Smith ,  Curtis R. Hruska ,  Benjamin F. Catching ,  Paul G. Coombs

IPC: G01J3/02 ,  G01J3/12 ,  G01J3/26 ,  G01J3/28 ,  G01N21/25 ,  G01N21/85 ,  G02B5/20 ,  G02B5/22 ,  G02B5/28 ,  G02B5/30 ,  G02B6/42

Abstract: An optical assembly is disclosed including two laterally variable bandpass optical filters stacked at a fixed distance from each other, so that the upstream filter functions as a spatial filter for the downstream filter. The lateral displacement may cause a suppression of the Oblique beam when transmission passbands at impinging locations of the oblique beam onto the upstream and downstream filters do not overlap. A photodetector array may be disposed downstream of the downstream filter. The optical assembly may be coupled via a variety of optical conduits or optical fibers for spectroscopic measurements of a flowing sample.

公开(公告)号：US20220146308A1

公开(公告)日：2022-05-12

申请号：US17581103

申请日：2022-01-21

Applicant: VIAVI Solutions Inc.

Inventor： Paula Smith ,  Curtis R. Hruska ,  Benjamin F. Catching ,  Paul G. Coombs

IPC: G01J3/02 ,  G01J3/12 ,  G01N21/25 ,  G01N21/85 ,  G01J3/26 ,  G02B5/28 ,  G02B5/20 ,  G01J3/28 ,  G02B5/22 ,  G02B5/30 ,  G02B6/42

Abstract: An optical assembly is disclosed including two laterally variable bandpass optical filters stacked at a fixed distance from each other, so that the upstream filter functions as a spatial filter for the downstream filter. The lateral displacement may cause a suppression of the Oblique beam when transmission passbands at impinging locations of the oblique beam onto the upstream and downstream filters do not overlap. A photodetector array may be disposed downstream of the downstream filter. The optical assembly may be coupled via a variety of optical conduits or optical fibers for spectroscopic measurements of a flowing sample.

公开(公告)号：US10190910B2

公开(公告)日：2019-01-29

申请号：US15488948

申请日：2017-04-17

Applicant: Viavi Solutions, Inc.

Inventor： Curtis R. Hruska ,  Benjamin F. Catching ,  Paula Smith

IPC: G01J3/02 ,  G01J3/12 ,  G01J3/26 ,  G01J3/28 ,  G02B5/28

Abstract: An optical filter is disclosed including two laterally variable bandpass filters stacked at a fixed distance from each other, so that the upstream filter functions as a spatial filter for the downstream filter. This happens because an oblique beam transmitted by the upstream filter is displaced laterally when impinging on the downstream filter. The lateral displacement causes a suppression of the oblique beam when transmission passbands at impinging locations of the oblique beam onto the upstream and downstream filters do not overlap.

公开(公告)号：US20170284930A1

公开(公告)日：2017-10-05

申请号：US15477753

申请日：2017-04-03

Applicant: Viavi Solutions Inc.

Inventor： Curtis R. HRUSKA ,  Peng Zou ,  Benjamin F. Catching ,  Marc K. Von Gunten ,  Valton Smith

IPC: G01N21/25

Abstract: A spectroscopic assembly may include a spectrometer. The spectrometer may include an illumination source to generate a light to illuminate a sample. The spectrometer may include a sensor to obtain a spectroscopic measurement based on light, reflected by the sample, from the light illuminating the sample. The spectroscopic assembly may include a light pipe to transfer the light reflected from the sample. The light pipe may include a first opening to receive the spectrometer. The light pipe may include a second opening to receive the sample, such that the sample is enclosed by the light pipe and a base surface when the sample is received at the second opening. The light pipe may be associated with aligning the illumination source and the sensor with the sample.

公开(公告)号：US11542596B2

公开(公告)日：2023-01-03

申请号：US16459433

申请日：2019-07-01

Applicant: VIAVI Solutions Inc.

Inventor： Markus K. Tilsch ,  Benjamin F. Catching

IPC: C23C14/54 ,  G01B11/06 ,  B05C11/10 ,  G01N21/84 ,  C23C14/50

Abstract: A coating system may include a coating chamber; a substrate holder to move a substrate along a motion path; and a sensor device in the coating chamber, wherein the sensor device is configured to move along the motion path, and wherein the sensor device is to perform a spectral measurement on the substrate.

公开(公告)号：US10690590B2

公开(公告)日：2020-06-23

申请号：US15477753

申请日：2017-04-03

Applicant: Viavi Solutions Inc.

Inventor： Curtis R. Hruska ,  Peng Zou ,  Benjamin F. Catching ,  Marc K. Von Gunten ,  Valton Smith

IPC: G01N21/25 ,  G01J3/02 ,  G01N21/03 ,  G02B27/09 ,  G01J3/06 ,  G01J3/42

Abstract: A spectroscopic assembly may include a spectrometer. The spectrometer may include an illumination source to generate a light to illuminate a sample. The spectrometer may include a sensor to obtain a spectroscopic measurement based on light, reflected by the sample, from the light illuminating the sample. The spectroscopic assembly may include a light pipe to transfer the light reflected from the sample. The light pipe may include a first opening to receive the spectrometer. The light pipe may include a second opening to receive the sample, such that the sample is enclosed by the light pipe and a base surface when the sample is received at the second opening. The light pipe may be associated with aligning the illumination source and the sensor with the sample.

公开(公告)号：US10481100B2

公开(公告)日：2019-11-19

申请号：US15951686

申请日：2018-04-12

Applicant: VIAVI Solutions Inc.

Inventor： Benjamin F. Catching ,  Marc K. Von Gunten ,  Curtis R. Hruska ,  Paula Smith ,  Paul G. Coombs

IPC: G01N21/85 ,  G01J3/02 ,  G01J3/12 ,  G01N21/27

Abstract: Increasing the precision of process monitoring may be improved if the sensors take the form of traveling probes riding along with the flowing materials in the manufacturing process rather than sample only when the process moves passed the sensors fixed location. The probe includes an outer housing hermetically sealed from the flowing materials, and a light source for transmitting light through a window in the housing onto the flowing materials. A spatially variable optical filter (SVF) captures light returning from the flowing materials, and separates the captured light into a spectrum of constituent wavelength signals for transmission to a detector array, which provides a power reading for each constituent wavelength signal.

公开(公告)号：US10422743B2

公开(公告)日：2019-09-24

申请号：US15887196

申请日：2018-02-02

Applicant: VIAVI Solutions Inc.

Inventor： Curtis R. Hruska ,  Benjamin F. Catching ,  Marc K. Von Gunten

IPC: G01N1/10 ,  G01N21/359 ,  G01J3/02 ,  G01J3/10

Abstract: A lightpipe is coupled to a spectrometer based on a laterally variable optical filter. The lightpipe may be used for both guiding the illuminating light towards a sample and collecting light reflected or emitted by the sample upon illumination, for spectral measurements at a distance from the sample afforded by the lightpipe. The lightpipe may include a slab of homogeneous transparent material for unconstrained bidirectional propagation of light in bulk of the material. The lightpipe may be solid, hollow, or sectioned for separated guiding of the illuminating and the reflected light.