A device includes a light source configured to emit an image light. The device also includes an optical assembly configured to direct the image light to an eye-box of the device. The optical assembly includes a first optical element portion configured to focus a first portion of the image light propagating through the first optical element portion. The optical assembly also includes a second optical element portion configured to focus a second portion of the image light propagating through the second optical element portion. The second optical element portion includes a liquid crystal (“LC”) lens having an adjustable optical power.

The invention relates to spectacles, systems and methods for visibility enhancement, including by glare suppression. The spectacles, systems and methods for visibility enhancement includes spectacles and a spectacle lens having a liquid crystal cell (LC), the transmission (TR) of which may be varied by a suitable control and the liquid crystal cell (LC) designed so that the transmission (TR) of the liquid crystal cell (LC) may be switched between high and low transmission states. The liquid crystal cell (LC) includes a control for regulating the times of the state of high transmission (T.sub.on) of the liquid crystal cell (LC) such that the temporal position of the times of the high transmission state (T.sub.on) within a period of times of the high transmission state (T.sub.on) and times of the low transmission state (T.sub.off) may be altered continuously or discontinuously; and/or the duration of a period of times of the high transmission state (T.sub.on) and times of the low transmission state (T.sub.off) may be altered continuously or discontinuously. Such changes may be determined by a secret coding key.

A lens including a flexible refractive optic having a fixed refractive index, an electro-active element embedded within the flexible refractive optic, wherein the electro-active element has an alterable refractive index, and a controller electrically connected to the electro-active element wherein when power is applied thereto the refractive index of the electro-active element is altered.

A lens including a flexible refractive optic having a fixed refractive index, an electro-active element embedded within the flexible refractive optic, wherein the electro-active element has an alterable refractive index, and a controller electrically connected to the electro-active element wherein when power is applied thereto the refractive index of the electro-active element is altered.

An optical lens device has an actively controllable focal length. This device comprises an element with lensing effect comprising a plurality of regions. Each such region has a corresponding refractive power for providing a corresponding focal length distinct from the focal length of at least one other region of this plurality of regions. The device further comprises at least one non-centric addressable optical element integrated in or provided on the element with lensing effect. This at least one addressable optical element is adapted for changing the transmittance of at least one of the plurality of regions in response to a control signal. The device also comprises a control means for generating the control signal.

Disclosed are a method and device for manufacturing an ophthalmic lens for eyeglasses intended to be placed in front of an eye of a wearer, the ophthalmic lens having a desired optical function including a dioptric function adapted to a prescription of the wearer. The method includes: providing an optical element made of a first material having a first refractive index, the optical element being intended to be modified to manufacture the ophthalmic lens; providing data relative to the modification of the optical element enabling to obtain the desired optical function; determining at least one zone in the first material based on data; and modifying the refractive index of the first material to form a pattern in the determined zone with focused femtosecond laser pulses according to data so as to obtain an ophthalmic lens having the desired optical function.

A sunglass using a transparent, pixelated, liquid crystal (LC) two-dimensional array, or functionally equivalent technology, in possible combination with optical materials to selectively attenuate or block the Sun or its reflection from the field of view (FOV) of the person wearing the glasses is disclosed. An imaging camera located within the sunglasses detects the Sun, with software determining its position via centroiding algorithms. The Solar position is then translated, and, if necessary, rotated, scaled and skewed for the appropriate pixels in the left and right lens of the sunglass, where left eye and right eye “circles” are created to block or attenuate the Sun's image from the person wearing the glasses. Additionally, the sunglass lens will have protection against the Sun's ultra-violet (UV) rays. The internal power source may be either replaceable, or charged by solar or standard methods.

Multifocal intraocular lens with extended depth of field that comprises, in at least one of the surfaces (2), a small zone with a multifocal profile with a defined optical axis (3) and, in the peripheral region and coaxial to the multifocal zone, a ring-shaped opaque mask (1) that partially or totally block light to produce a small aperture effect and, therefore, the multifocal profile has a radius equal or larger than the internal radius of the mask (1), and there is at least one transition between focal zones or one diffractive step inside the internal radius of the mask (1).

The invention is based on a sun protection device, in particular sun spectacles, with at least one optical sun protection filter (12) comprising at least one liquid-crystal cell (14, 14′), with at least one sensor unit (16) configured for capturing a solar irradiation, and with at least one control and/or regulation unit (18), which is configured for controlling and/or regulating a permeability of the optical sun protection filter (12) depending on a solar irradiation.

It is proposed that the control and/or regulation unit (18) is in at least one operating state configured for controlling the at least one liquid-crystal cell (14, 14′) of the optical sun protection filter (12) for generating a permeability gradient (20), which is defined for a user (31) and features at least two differing permeabilities.

A meniscus shaped lens module comprises one or more structures that decrease an amount of pressure or force to move one or more surfaces of the lens module and increase a separation distance of anterior and posterior surfaces of the module in order to provide an increase in optical power. A lens structure of the module comprises one or more of a pattern of a surface of a central chamber, a meniscus, a reduced diameter or a soft material in order to provide increased amounts of curvature of an outer contact lens surface with decreased amounts of pressure. The pattern can be formed in one or more of many ways, and may comprise one or more of folds, patterning, bellows or concertinaed surface of an optically transmissive material having a substantially uniform thickness such as a sheet of a membrane material.