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公开(公告)号：US20220155581A1
公开(公告)日：2022-05-19
申请号：US17431682
申请日：2020-02-17
Applicant: Unispectral Ltd.
Inventor： Peleg LEVIN , Eliahu Chaim ASHKENAZI , Ariel RAZ
Abstract: The present disclosure provides, among other aspects, a technique, employed in a system and method, for monitoring a state of a tunable optical filter, typically a MEMS tunable filter such as a Fabry-Perot filter. The technique utilizes application of an actuation voltage signal characterized by a first component configured for causing a movement of a movable optical member of the tunable filter and a second component configured for being responsive for each given state of the tunable filter, i.e each optical gap results in a different response of the second component. The response of the second component to the state of the tunable filter, i.e. its variation profile from the original applied second component of the voltage signal is being indicative of the state of the tunable filter.
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公开(公告)号：US10854662B2
公开(公告)日：2020-12-01
申请号：US16461811
申请日：2017-11-18
Applicant: UNISPECTRAL LTD.
Inventor： Ariel Raz , Viacheslav Krylov , Eliahu Chaim Ashkenazi , Peleg Levin , Efrat Immer
IPC: H01L27/146 , H04N5/225 , H04N5/33 , H04N5/369
Abstract: Imaging systems and methods for imaging using the same color or monochromatic image sensor, wherein imaging can be switched between at least two imaging modes, for example between a visible imaging mode and an IR imaging mode, without moving any system component from a given position in an optical path between an imaged object and the image sensor. In an example, a system includes an image sensor, a tunable spectral filter and a multi-bandpass filter, the tunable spectral filter and the multi-bandpass filter arranged in a common optical path between an object and the image sensor, and a controller configured and operable to position the tunable spectral filter in a plurality of operation states related to a plurality of imaging modes.
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公开(公告)号：US20210208360A1
公开(公告)日：2021-07-08
申请号：US17056699
申请日：2019-05-07
Applicant: Unispectral Ltd.
Inventor： Peleg LEVIN , Eliahu Chaim ASHKENAZI
Abstract: An optical unit that includes a lens and a frame that is configured to support the lens; wherein the lens has a coefficient of thermal expansion (CTE) of a first value; wherein the frame has a CTE of a second value; wherein the first value differs from the second value; and wherein at least one of the lens and the frame comprises a flexible interface for compensating for differences between thermal expansions of the lens and of the frame.
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公开(公告)号：US20210010862A1
公开(公告)日：2021-01-14
申请号：US16982318
申请日：2019-03-18
Applicant: Unispectral Ltd.
Inventor： Ariel RAZ , Shahar KATZ , Hila GABAY , Efrat IMMER , Eliahu Chaim ASHKENAZI
Abstract: System and method for narrowing the transmission curves obtained using a spectral imager in which spectral images are acquired using a MEMS Fabri-Perot (FP) tunable filter. A method includes acquiring a first plurality of broad-band spectral images associated with respective MEMS FP etalon states and processing the first plurality of broad-band spectral images into a second plurality of narrow-band spectral images.
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公开(公告)号：US20200264049A1
公开(公告)日：2020-08-20
申请号：US16648187
申请日：2018-09-20
Applicant: Unispectral Ltd.
Inventor： Ariel RAZ , Efrat IMMER
Abstract: Some embodiments are directed to an imaging that includes an image sensor; a tunable filter; and a controller operatively connected to the tunable filter and to the image sensor. The imaging system is configured to: tune the tunable filter to a plurality of filter states. The image sensor acquires, at each state of the plurality of states, an image of an object, to provide different images of the object. The controller calculates a state related score, for each state that is indicative of one or more properties of at least one subset of pixels of the at least one image acquired at the state, to provide a plurality of state related scores; and determines, based on at least one of the plurality of state related scores, a desired state of the tunable filter that satisfies a desired state related score criterion; and sets the tunable filter.
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Patent Agency Ranking
公开(公告)号：US11474343B2
公开(公告)日：2022-10-18
申请号：US16461808
申请日：2017-11-20
Applicant: UNISPECTRAL LTD.
Inventor： Ariel Raz , Viacheslav Krylov , Eliahu Chaim Ashkenazi , Peleg Levin
Abstract: Tunable MEMS etalon devices comprising: a front mirror and a back mirror, the front and back mirrors separated in an initial pre-stressed un-actuated etalon state by a gap having a pre-stressed un-actuated gap size determined by a back stopper structure in physical contact with the front mirror and back mirrors, the etalon configured to assume at least one actuated state in which the gap has an actuated gap size gap greater than the pre-stressed un-actuated gap size; an anchor structure, a frame structure fixedly coupled to the front mirror at a first surface thereof that faces incoming light, and a flexure structure attached to the anchor structure and to the frame structure but not attached to the front mirror, and a spacer structure separating the anchor structure from the back mirror, and wherein the front mirror and the spacer structure are formed in a same single glass layer.
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公开(公告)号：US11092492B2
公开(公告)日：2021-08-17
申请号：US16648187
申请日：2018-09-20
Applicant: Unispectral Ltd.
Inventor： Ariel Raz , Efrat Immer
Abstract: Some embodiments are directed to an imaging that includes an image sensor; a tunable filter; and a controller operatively connected to the tunable filter and to the image sensor. The imaging system is configured to: tune the tunable filter to a plurality of filter states. The image sensor acquires, at each state of the plurality of states, an image of an object, to provide different images of the object. The controller calculates a state related score, for each state that is indicative of one or more properties of at least one subset of pixels of the at least one image acquired at the state, to provide a plurality of state related scores; and determines, based on at least one of the plurality of state related scores, a desired state of the tunable filter that satisfies a desired state related score criterion; and sets the tunable filter.
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公开(公告)号：US20210033814A1
公开(公告)日：2021-02-04
申请号：US16975513
申请日：2019-02-25
Applicant: Unispectral Ltd.
Inventor： Gal AVIVI , Nadav OSIROFF , Peleg LEVIN
Abstract: An opto-mechanical unit that comprises a tunable filter, a holder that surrounds the tunable filter, and mechanically-damping and gluing gel; wherein the holder is spaced apart from the tunable filter; wherein the mechanically-damping and gluing gel surrounds the tunable filter and is attached to the holder and to the tunable filter; and wherein the holder comprises a camera interface that (a) defines a first inner space, and (b) introduces a gap between the tunable filter and the camera interface.
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公开(公告)号：US12092891B2
公开(公告)日：2024-09-17
申请号：US16975513
申请日：2019-02-25
Applicant: Unispectral Ltd.
Inventor： Gal Avivi , Nadav Osiroff , Peleg Levin
Abstract: An opto-mechanical unit that comprises a tunable filter, a holder that surrounds the tunable filter, and mechanically-damping and gluing gel; wherein the holder is spaced apart from the tunable filter; wherein the mechanically-damping and gluing gel surrounds the tunable filter and is attached to the holder and to the tunable filter; and wherein the holder comprises a camera interface that (a) defines a first inner space, and (b) introduces a gap between the tunable filter and the camera interface.
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公开(公告)号：US11860441B2
公开(公告)日：2024-01-02
申请号：US17056699
申请日：2019-05-07
Applicant: Unispectral Ltd.
Inventor： Peleg Levin , Eliahu Chaim Ashkenazi
Abstract: An optical unit that includes a lens and a frame that is configured to support the lens; wherein the lens has a coefficient of thermal expansion (CTE) of a first value; wherein the frame has a CTE of a second value; wherein the first value differs from the second value; and wherein at least one of the lens and the frame comprises a flexible interface for compensating for differences between thermal expansions of the lens and of the frame.
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