Unispectral Ltd.

Unispecral Ltd.

Peleg Levin

Eliahu Chaim Ashkenazi

Ariel Raz

Viacheslav Krylov

Gal Avivi

Efrat Immer

Nadav Osiroff

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.

Device that includes a MEMS tunable filter and a method for operating the device

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.

Opto-mechanical unit having a tunable filter holder and a tunable filter

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.

Optical device with expansion compensation

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.

Tunable MEMS etalon device

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.

Growing community of inventors

Rishon Le-Zion, Israel

Peleg Levin