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公开(公告)号：US10451588B2
公开(公告)日：2019-10-22
申请号：US15504244
申请日：2015-08-25
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Orlin B. Knudson , Jia Hu , Chaodi Li , Richard L. Rylander , Cheryl Lee Senger Elsbernd , Stephen J. Willett , Andrew P. Bonifas
Abstract: Magneto-Mechanical Resonator Sensor with Mass Distribution Channel Some aspects of the present disclosure feature a sensing device (e.g. for temperature, moisture or detection of substances) comprising a magnetic bias layer, a resonator, a spacer, and an environmental change receptor. The spacer is disposed between the magnetic bias layer and the resonator. At least one of the resonator surfaces has a predefined channel. The environmental change receptor is disposed proximate to the predefined channel. In response to a change in environment, the environmental change receptor distributes along a part of the channel.
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公开(公告)号：US10408685B2
公开(公告)日：2019-09-10
申请号：US15504409
申请日：2015-08-17
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Jia Hu , Cheryl L. S. Elsbernd , Orlin B. Knudson , Chaodi Li , Andrew P. Bonifas , Richard L. Rylander , Stephen J. Willett
Abstract: Some aspects of the present disclosure feature a sensing device comprising a magnetic bias layer, a resonator, a spacer, and an environmental change receptor. The environmental change receptor is disposed on a surface of the resonator. The mass of the environmental change receptor is changed in response to a change in environment. The resonant frequency of the sensing device shifts in response to the mass change of the environmental change receptor.
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公开(公告)号：US20190137450A1
公开(公告)日：2019-05-09
申请号：US16074121
申请日：2017-01-23
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Stephen J. Willett , Erik A. Aho , Eric J. Alfuth , Benjamin P. Heppner , Richard L. Rylander , Benjamin K. Stein , Daniel A. Temple
IPC: G01N29/036 , G01N29/34 , G01N29/42
Abstract: Resonant acoustic gas sensors and methods for operating acoustic gas sensors that improve detection and reduce power consumption through the use of dynamic thresholds for identifying resonance peaks and optimizing searching for subsequent resonance peaks. The resonant acoustic gas sensors may use one or two separate transducers to produce the electronic signal that is filtered and used to identify the resonance peaks, using either voltage or impedance values to identify resonance peaks and use the resonance peaks to determine the composition of the gas mixture being measured.
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公开(公告)号：US20180210221A1
公开(公告)日：2018-07-26
申请号：US15924517
申请日：2018-03-19
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Stephen J. Willett , Craig R. Schardt , David J.W. Aastuen
Abstract: Projection subsystems are described. More, particularly, projection subsystems that include a light source and a polarizing beam splitter are described. The polarizing beam splitters of the presently described projection subsystems are capable of avoiding performance degradation even after exposure to large doses of incident light.
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公开(公告)号：US20170234740A1
公开(公告)日：2017-08-17
申请号：US15504409
申请日：2015-08-17
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Jia Hu , Cheryl L.S. Elsbernd , Orlin B. Knudson , Chaodi Li , Andrew P. Bonifas , Richard L. Rylander , Stephen J. Willett
Abstract: Some aspects of the present disclosure feature a sensing device comprising a magnetic bias layer, a resonator, a spacer, and an environmental change receptor. The environmental change receptor is disposed on a surface of the resonator. The mass of the environmental change receptor is changed in response to a change in environment. The resonant frequency of the sensing device shifts in response to the mass change of the environmental change receptor.
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Patent Agency Ranking
公开(公告)号：US20170227452A1
公开(公告)日：2017-08-10
申请号：US15328244
申请日：2015-08-18
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Richard L. Rylander , Andrew P. Bonifas , David P. Erickson , Jia Hu , Stephen J. Willett , Chaodi Li , Orlin B. Knudson
Abstract: Some aspects of the present disclosure feature a system for sensing a change in environment comprising a MMR sensor and a reader. The MMR sensor is configured to be disposed in the environment. The MMR sensor comprises a magnetic bias layer, a resonator, a spacer, and an environmental change receptor. The reader is configured to measure a frequency characteristic of the MMR sensor after the environmental variable changes and the change to the environmental variable is evaluated based on the frequency characteristic.
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公开(公告)号：US20140211173A1
公开(公告)日：2014-07-31
申请号：US13753578
申请日：2013-01-30
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Patrick R. Destain , Jennifer L. Grace , John E. Duncan , Tomasz A. Pol , William E. Phillips, III , Michael W. O'Keefe , Alexander A. Glinski , Stephen J. Willett
IPC: G03B21/16
CPC classification number: G03B21/16 , G03B21/2033
Abstract: A projection subsystem includes a light engine that provides a collection lens, a collimator and at least one solid state light emitter. A projection lens assembly receives the image and provides a projection beam having a luminous flux level. The projection subsystem has a portability efficacy.
Abstract translation: 投影子系统包括提供收集透镜，准直器和至少一个固态光发射器的光引擎。 投影透镜组件接收图像并提供具有光通量水平的投影光束。 投影子系统具有便携性功能。
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公开(公告)号：US20220197024A1
公开(公告)日：2022-06-23
申请号：US17595046
申请日：2019-06-06
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Zhisheng Yun , Stephen J. Willett , Craig R. Schardt , Gilles J. Benoit , Keith M. Kotchick , Ryan C. Shirk , David A. Rosen , Hao Wu
Abstract: An optical system includes a reflective polarizer (20), and a display (10), first mirror (30a), and second mirror (30b) disposed on a same side of the reflective polarizer (20). The reflective polarizer (20) transmits an image emitted by the display (10) after the image is reflected by the first and second mirrors (30a, 30b). A mid-plane defined by intersection points between an optical axis of the system and the display (10), reflective polarizer (20), and second mirror (30b) has one-pass through four-pass regions having respective areas, A1 through A4. The one-pass region includes portions of the emitted image rays (15) that pass at least one time across the one-pass region, the two-pass region includes portions of the image rays (15) that pass at least two times across the two-pass region, the three-pass region includes portions of the image rays (15) that pass at least three times across the three-pass region, and the four-pass region includes portions of the image rays (15) that pass four times across the four-pass region, such that the ratio A4/A3 is between approximately 0.15 and approximately 0.40.
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公开(公告)号：US10670873B2
公开(公告)日：2020-06-02
申请号：US15924517
申请日：2018-03-19
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Stephen J. Willett , Craig R. Schardt , David J. W. Aastuen
Abstract: Projection subsystems are described. More, particularly, projection subsystems that include a light source and a polarizing beam splitter are described. The polarizing beam splitters of the presently described projection subsystems are capable of avoiding performance degradation even after exposure to large doses of incident light.
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公开(公告)号：US10228319B2
公开(公告)日：2019-03-12
申请号：US15328244
申请日：2015-08-18
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Richard L. Rylander , Andrew P. Bonifas , David P. Erickson , Jia Hu , Stephen J. Willett , Chaodi Li , Orlin B. Knudson
Abstract: Some aspects of the present disclosure feature a system for sensing a change in environment comprising a MMR sensor and a reader. The MMR sensor is configured to be disposed in the environment. The MMR sensor comprises a magnetic bias layer, a resonator, a spacer, and an environmental change receptor. The reader is configured to measure a frequency characteristic of the MMR sensor after the environmental variable changes and the change to the environmental variable is evaluated based on the frequency characteristic.
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