Current invention propounds a novel active contact lens device, system, as well as, a corresponding method of operation of such contact lens with an embedded orientation determination mechanism. The system, furthermore, utilizes an onboard, integrated orientation and gaze sensing component to determine eye orientation, in 3D (x,y,z) dimension corresponding to the direction of eye gaze, or in 2D (x,y) dimension, denoting orientation relative to the horizontal or vertical line of the eye, also known as, the horizontal or vertical meridian of the eye. Such a system may be used to provide rich augmented reality (AR) or virtual reality (VR) experience to its user/wearer. Hereby, we propose to incorporate several electronic, electro-optical, optical or other types of components into the contact lens substrate and interconnect them to form such an innovative AR/VR enabled active contact lens system. The system proffered herein, may incorporate and integrate a number of the following components: an integrated orientation sensing module, a positioning module (a location determination module—for example GPS sensor), an integrated substantially transparent, or semi-transparent, or non-transparent display device, a source of electric power, a communication component, a processing component, and an audio output device. Some constituent modules may be integrated into the lens substrate and some may be located remotely and accessible via wireless communication channel. The smart contact lens with an embedded orientation module may be used to implement a variety of reactive, adaptive, predictive, behavior monitoring and analyzing systems.

A method and system provide a multifocal ophthalmic device. The ophthalmic lens has an anterior surface, a posterior surface and at least one diffractive structure including a plurality of echelettes. The echelettes have at least one step height of at least one wavelength and not more than two wavelengths in optical path length. The diffractive structure(s) reside on at least one of the anterior surface and the posterior surface. The diffractive structure(s) provide a plurality of focal lengths for the ophthalmic lens.

Apparatuses, systems and methods for providing improved ophthalmic lenses, particularly intraocular lenses (IOLs). Exemplary diffractive intraocular implants (IOLs) can include a diffractive profile having multiple diffractive zones. The diffractive zones can include a central zone that includes one or more echelettes and a peripheral zone beyond the central zone having one or more peripheral echelettes. The central diffractive zone can work in a higher diffractive order than a remainder of the diffractive profile. The combination of the central and peripheral zones and an optional intermediate zone provides a longer depth of focus than a diffractive profile defined just by a peripheral and/or optional intermediate zone.

A spectacle lens for at least one eye of a user, a method for producing a spectacle lens, and a computer program product having executable instructions for performing the method for producing the spectacle lens are disclosed. The spectacle lens has a permanent marking which is or contains a diffractive structure, wherein a diffractive pattern generated by illumination of the diffractive structure is configured to be invisible upon a first kind of illumination and configured to be visible only upon a second kind of illumination. The permanent markings on the spectacle lens are, on one hand, invisible to the user or to a spectator looking at the user wearing the spectacle lens without utilizing specially selected optical aids but, on the other hand, enables continued control of the spectacle lens in front of the eye of the user by an optician or a specifically designated optical sensor.

Apparatuses, systems and methods for providing improved ophthalmic lenses, particularly intraocular lenses (IOLs), include features for reducing dysphotopsia effects, such as haloes and glare. Exemplary ophthalmic lenses can include an optic having a central region disposed about an optical axis and a peripheral region extending outward from the central region, with a diffractive achromat positioned on the peripheral region, and the central region lacking an achromat, and a base power for distance of the central region being the same as a base power for distance of the peripheral region.

A diffractive eye lens having a front side, a rear side and an optical main axis, wherein the front side and/or the rear side has a spherical, an aspherical, a spherical-toric or an aspherical-toric basic shape, and the front side and/or the rear side has a diffractive optical structure. The diffractive eye lens allows for color correction and simultaneously improves visual properties by reducing a halo. The diffractive optical structure in a first lens region is designed such that, at a design wavelength, there is a significant diffraction efficiency for a phase deviation between the first main sub-zones of more than one wavelength and, for the first lens region, On average over all diffraction zones, a proportion of the main sub-zones on the diffraction zones is for example at least 94%, at least 95% and at best nearly 100%.

The present disclosure describes optical devices and methods for manufacturing such optical devices. Namely, an example optical device includes a first optical transparent thermoplastic layer, a second optical transparent thermoplastic layer, and in between both thermoplastic layers, a diffractive optical element adjacent to one thermoplastic layer, a spacer in between the diffractive optical element and the other thermoplastic layer and, a border enclosing the diffractive element thereby forming a sealed cavity.

Apparatuses, systems and methods for providing improved ophthalmic lenses, particularly intraocular lenses (IOLs), include features for reducing adverse optical effects from diffractive profiles of such a lens. Exemplary ophthalmic lenses can include an optic including a diffractive profile including a transition zone having a parabolic shape.

The invention relates to a lens element (1) intended to be worn by a wearer, comprising at least one prescription portion (2) having a first optical function configured to provide a dioptric correction of an eye of the wearer when the lens element (1) is worn by said wearer based on a prescription of the wearer, and a plurality of lenslets (3), each lenslet (3) of said plurality of lenslets being configured to provide at least one second optical function which differs from the first optical function,

wherein each lenslet (3) has a shape, a size and a position such that at least one portion of said lens element (1) has a modulation transfer function (MTF) whose values are configured so that the modulation transfer function of said lens element 1 over a range of spatial frequencies comprised between 1 and 5 cycles per degree are lower or equal to 0.6.

Apparatuses, systems and methods for providing improved ophthalmic lenses, particularly intraocular lenses (IOLs), include features for providing improved extended depth of focus lenses. Exemplary ophthalmic lenses can include an optic including a diffractive profile including multiple rings, with the rings having step heights corresponding to a desired performance of the optic and configured to reduce adverse optical effects of the diffractive profile.