Polight Asa

Polight As

Photonyx As

Vladimir Kartashov

Lars Henriksen

Pierre Craen

Nicolas Tallaron

Janne Tapani Kilpinen

Wilfred Edwin Booij

Ib-Rune Johansen

Dag Thorstein Wang

Karl Henrik Haugholt

Frode Tyholdt

Thomas Spatscheck

Morten Eliassen

Jon Herman Ulvensøen

Jon Herman Ulvensoen

John Phair

Bengt Jacobson

Even Zimmer

Trond Naterstad

Gunner E Hedin

Alain Gillet

Dag Torstein Wang

Johansen Ib-Rune

The invention relates to a controllable optical assembly such as a controllable lens or a controllable beam deflector. The optical assembly comprises first and second cover members, wherein one of them is transparent while the other is transparent or reflective. A transparent, deformable, non-fluid body is sandwiched between the first and second cover members so that the first and second cover members and non-fluid body constitute a lens or a light deflector. Actuators are arranged to generate a controllable bending and/or tilt of the first and/or the second cover member dependent on a control signal. One or more sensors are provided to generate a measurement signal indicative of the bending or tilt of the first and/or the second cover member. The control signal is determined based on the measurement signal.

Sensor based control of an optical device with a variable optical power or a variable beam deflection

The invention relates to a controllable lens with variable optical power. The lens comprises a first and second cover members (), a transparent, deformable, non-fluid body () sandwiched between the first and second i transparent cover members, so that the first and second transparent cover members and non-fluid body constitute a lens, one or more actuators arranged to provide displacement in a direction along the optical axis, and one or more elastic elements (__) connecting the actuator displacement elements with the first cover member, wherein at least a portion of each of the one or more elastic elements is arranged to deform elastically in response to a relative radial displacement between the first transparent cover member and the actuator displacement elements. A first stiffness in a radial direction of each of the one or more elastic elements is smaller than a second stiffness in the direction of the optical axis of each of the one or more elastic elements.

Controllable lens actuated via flexure joints

The invention relates to an optical assembly for use with compact camera modules. The optical assembly comprises a transparent optical element, an optical reflection surface arranged to deflect a light through the optical element, a transparent elastic non-fluid body and an actuator system comprising one or more actuators and an actuator-component arranged to undergo bending and/or displacement by the one or more actuators. The non-fluid body may be sandwiched between the actuator-component and the optical element so that the shape or orientation of the actuator component and the non-fluid body can be changed by actuation of the actuators to provide adjustable optical power or beam deflection.

Optical device with a light ray deflector

The invention relates to a tunable lens where the optical power can be adjusted. The lens consists of a deformable, non-fluid lens body sandwiched between a thin, flexible membrane and transparent back window, and an actuator system serving to change the overall shape of the membrane and lens body. The membrane is pre-shaped to have a Sag or Sagittal of at least 10 &#x3bc;m so that the lens has a non-zero optical power when the actuator system is not activated. In order to achieve a large optical power range for the lens, the membrane should preferably be made of a material having a Young's modulus in the range 2-1.000 MPa.

Adaptive lens

There is presented an optical element, such as a tuneable lens, wherein there is provided meansto mitigate problems with stress concentration in a bendable cover memberat a border of a supporting structure, which in the absence of said means would entail a stress singularity issue due to an abrupt change in mechanical properties around the bendable cover member

Optical element with stress distributing supporting structure

The invention relates to an adjustable or tuneable lens assembly where a deformable, non-fluid lens body is sandwiched between a bendable lens cover and a back window to form a lens. The lens assembly has an actuator system with a plurality of individually addressable actuators for applying force to the lens cover in direction along the optical axis to change an overall shape of the lens. The actuator system has a focus adjustment mode to adjust the optical power of the lens and an optical image stabilisation mode, which are configured to operate simultaneously by addressing each actuator to apply a force being at least substantially a sum of the forces that would be applied in these modes.

Lens assembly for optical image stabilization and focus adjustment

There is presented an optical element () comprising a support structure () with a sidewall (), a bendable cover member () attached to the sidewall (), one or more piezoelectric actuators () arranged for shaping said bendable cover member () into a desired shape, wherein said optical element () comprises an optically active area () with an optical axis (), wherein an outer edge (A-E) of the one or more piezoelectric actuators () as observed in a direction being parallel with the optical axis () defines a first line, and an inner edge () of the support structure () at the interface between the support structure () and the bendable cover member () as observed in the direction being parallel with the optical axis () defines a second line, wherein the first line and the second line as observed in the direction being parallel with the optical axis () cross each other in two or more positions and/or are parallel and coincident in one or more positions.

Low wavefront error piezoelectrically actuated optical element

The present invention relates to a transparent optical device element comprising a microlens and a method of providing stress and thermal compensation and tuning mechanical strength and curvature of a tunable microlens.

Tunable microlens with a variable structure element

The present invention provides method steps for manufacturing an assembly of adjustable lenses on a wafer. The method steps provide an easy manufacturing of such lenses, minimizing the cost of assembly, and at the same time provide a solution for mass production of compact adjustable lenses for use in mobile phones, etc.

Method for manufacturing adjustable lens

The present invention is generally related to the field of optical systems and/or lens attachments, and more specific to an optical system and/or lens attachment providing a switchable Optical Power Switch (OPS) controllably switchable between different states. A soft transparent material (), for example silicone-gel is disposed onto a surface of a glass plate (). The glass plate () can be moved with actuators towards a surface of a lens body (). When the soft material element () is in contact with the surface of the lens body (), this surface changes its optical feature.

Optical power switch (OPS)

The present invention is related to a lens assembly comprising a flexible lens body () inside a cavity bounded by a sidewall () and a first transparent cover (), and a second transparent cover (), wherein both covers () are in contact with respective surfaces of the lens body (). Piezo electric elements () shapes the lens body () when activated, thereby adjusting the focal length of the lens assembly.

Flexible lens assembly with variable focal length

The present invention provides thermal compensation for a lens assembly comprising a polymer lens body. Polymers do have different thermal expansion coefficients which makes it necessary to compensate for thermal expansions to keep optical characteristics of such lenses within specifications when used under different environmental conditions. Also, it is necessary to provide thermal compensation during manufacturing of such lenses due to high temperatures during manufacturing steps.

Method and arrangement for reducing thermal effects in compact adjustable optical lenses

The present invention provides a solution for designing a compact adjustable lens assembly, wherein a circular shaped piezoelectric crystal is bending a thin glass cover, thereby providing a shift of focal length of the lens assembly.

Compact adjustable lens

A device and a method for reducing polarization-dependent effects in dynamical optical components based on surface modulation of a polymer gel or membrane is disclosed. The device and method modifies, removes or leads away unwanted reflections from incident light or information carrier communicating with said optical component.

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Horten, Norway

Vladimir Kartashov