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

IPC: G02B26/00 ,  G01R27/26

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.

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

IPC: G01J3/26 ,  H04N5/232 ,  H04N9/04 ,  G01J3/28

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.

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

IPC: G01J3/32 ,  G01J3/28 ,  H04N5/225 ,  H04N5/235

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.

公开(公告)号：US20210255376A1

公开(公告)日：2021-08-19

申请号：US17056356

申请日：2019-05-16

Applicant: Unispectral Ltd.

Inventor： Eliahu Chaim ASHKENAZI ,  Ariel RAZ ,  Peleg LEVIN ,  Viacheslav KRYLOV

IPC: G02B5/28 ,  B81B3/00 ,  G01J3/26 ,  G02B26/00

Abstract: An optical device that may include an enclosure that comprises a first element, a second element; wherein the first element and the second element are at least partially transparent; a movable element that is configured to move within an internal space defined by the enclosure; and wherein the enclosure is sealed and is configured to maintain a pressure difference between a pressure level that exists within the internal space and an ambient pressure level.

公开(公告)号：US20190363116A1

公开(公告)日：2019-11-28

申请号：US16461811

申请日：2017-11-18

Applicant: UNISPECTRAL LTD.

Inventor： Ariel RAZ ,  Slava Krylov ,  Eli Ashkenazy ,  Peleg Levin ,  Efrat Immer

IPC: H01L27/146 ,  H04N5/33 ,  H04N5/369 ,  H04N5/225

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.