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.

公开(公告)号：US11525732B2

公开(公告)日：2022-12-13

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 ,  H04N9/04 ,  G01J3/28 ,  H04N5/232

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：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

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

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.

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

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.