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：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：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

IPC: G02B7/02 ,  G02B7/00

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.

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.