Polight Asa

Janne Tapani Kilpinen

Vladimir Kartashov

Pierre Craen

Lars Henriksen

Nicolas Tallaron

Alain Gillet

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

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.

Growing community of inventors

Akaa, Finland

Janne Tapani Kilpinen