Abstract: A film structure including at least a functional film, a carrier layer, and a counter-force liner, the functional film being in between the carrier layer and the counter-force liner. The carrier layer and the counter-force liner are larger than the receiving area, and the film structure includes a fastener adapted to fasten, directly or indirectly, the counter-force liner to the carrier layer at least on a portion of a zone outside the functional film. It is also proposed a corresponding machine, optical device and method for forming a functional film intended to be laminated on an optical article.

Abstract: Various embodiments disclose a quasi progressive lens including a first optical zone capable of providing distance vision, a second optical zone capable of providing near vision and a transition zone connecting the first and second optical zones. Physical dimensions (e.g., length and width) of the transition zone are adjusted to increase the size of the second optical zone in comparison to progressive lenses and to reduce residual cylinder power and aberrations along the convergence path in comparison to bifocal lenses.

Abstract: Progressive lenses designs are disclosed having optical parameters such as the width of a far vision zone, the width of a near vision zone, the width of a corridor, the maximum residual cylinder, the maximum gradient of residual cylinder, that vary with addition. Such lens designs may provide improved performance for individuals requiring different amounts of addition (such as individuals having different ages) who spend more time performing different types of activities such as viewing hand-held devices like smart phones and tablets or reading books.

Abstract: Progressive lenses designs are disclosed having optical parameters such as the width of a far vision zone, the width of a near vision zone, the width of a corridor, the maximum residual cylinder, the maximum gradient of residual cylinder, that vary with addition. Such lens designs may provide improved performance for individuals requiring different amounts of addition (such as individuals having different ages) who spend more time performing different types of activities such as viewing hand-held devices like smart phones and tablets or reading books.

Abstract: A lens with antifog coating having an improved properties and methods of forming such a coating are disclosed. The lens with an antifog coating may include: a lens composed of a transparent optical material; a hydrophilic layer applied only on a first surface of the lens; and a hydrophobic nanolayer applied on top of the hydrophilic layer, In some embodiments, the hydrophobic nanolayer may be applied only on top of the hydrophilic layer applied on the first surface of the lens.

Abstract: A computer implemented method for self-administrated testing of eyeglasses, the method comprising computer performed steps, the steps comprising: analyzing at least one image of a predefined pattern reflected from at least one lens of a pair of eyeglasses of a user, and identifying a property of the lens based on the analyzing.

Abstract: Conventionally, eyewear is rated in terms of its absorption coefficient (sometimes called the optical density (OD)) or the protection that it provides from ultraviolet (UV) radiation, which can damage the eye at high enough power levels. Infrared (IR) radiation can also damage the eye, but IR damage tends to occur at a much slower rate than UV-induced damage. Rating eyewear in terms of protection from IR radiation and/or in terms of a maximum safe exposure duration (SED) to IR radiation improves consumers' ability to protect themselves from IR radiation. In addition, eyewear rated for more IR protection or longer SED may still provide excellent vision thanks to coatings that reflect or absorb IR light and transmit visible light.

Abstract: A method of automatically evaluating vision of the user may include: subsequently displaying, by the processing unit, on a display, a subset of stimuli of a plurality of stimuli; tracking, by a gaze tracking device, a gaze of the user with respect to at least some of the stimuli of the subset being displayed on the display; obtaining multiple gaze datasets, at least one gaze dataset for at least some of the stimuli of the subset being displayed; and evaluating, by the processing unit, the vision of the user based on at least one of the multiple gaze datasets.

Abstract: A methods and system for testing of eyeglasses using a background object are disclosed. The method includes obtaining an image of a background object, whereby in at least a part of the image the background object is captured as viewed through a lens of a pair of eyeglasses, and analyzing at least a part of the image showing the background object being captured through a lens of the eyeglasses, and identifying a property of the lens based on the analyzing.

Abstract: An opaque adhesive can be used to secure the convex surface of a lens blank to a lens blocking piece. This opaque adhesive can include a resin that is curable under ultraviolet light and contains many dispersed pigment particles. The pigment particles may absorb light in the wavelength range of about 300 nm to about 800 nm such that the adhesive appears substantially opaque. A lens-on-block (LOB) system that uses the opaque adhesive to adhere a lens blank to a lens blocking piece facilitates on-block inspection of surface defects by increasing the contrast of light reflected from the surface being inspected. Put differently, the defects in the lens blank's surfaces stand out more when viewed in front of the opaque adhesive The inspection results can be used to carry out rework loops that eliminate or correct the detected defects, providing a streamlined method for on-block manufacturing of ophthalmic lenses.

Abstract: A system for automatic eyewear measurement and specification, comprising: at least one mobile sensor carried by a user, a value measurer, in communication with the at least one mobile sensor, configured to measure a plurality of values using the at least one mobile sensor, a behavioral index deriver, in communication with the value measurer, configured to derive at least one behavioral index pertaining to the user, using the measured values, and an eyewear specification generator, in communication with the behavioral index deriver, configured to generate an eyewear specification for the user, using the at least one derived behavioral index.

Abstract: A method for adjusting an original prescription to be used in manufacturing an ophthalmic lens for correcting vision of a patient, the method comprising: obtaining an original prescription based on an eye vision measurement performed by virtue of a real optical system; obtaining supplementary input data associated with the eye vision measurement; calculating a simulated optical system simulating the real optical system, by using at least the original prescription and the supplementary input data; and calculating an adjusted prescription by using at least the original prescription and the simulated optical system, to reflect the effect of the supplementary input data on the eye vision measurement.

Abstract: Various embodiments disclose a quasi progressive lens including a first optical zone capable of providing distance vision, a second optical zone capable of providing near vision and a transition zone connecting the first and second optical zones. Physical dimensions (e.g., length and width) of the transition zone are adjusted to increase the size of the second optical zone in comparison to progressive lenses and to reduce residual cylinder power and aberrations along the convergence path in comparison to bifocal lenses.

Abstract: Various embodiments disclose a quasi progressive lens including a first optical zone capable of providing distance vision, a second optical zone capable of providing near vision and a transition zone connecting the first and second optical zones. Physical dimensions (e.g., length and width) of the transition zone are adjusted to increase the size of the second optical zone in comparison to progressive lenses and to reduce residual cylinder power and aberrations along the convergence path in comparison to bifocal lenses.

Abstract: A method for determining parameters of the vision of an eye of a patient. The method comprises: constituting a part of a process of making a prescription for a corresponding lens via which the patient is expected to gaze in at least two different directions; and measuring in one of the two directions all of the following parameters of the eye's vision: sphere power, cylinder and cylinder axis, and measuring in the other of the two directions at least two of said parameters.

Abstract: A pre-production assembly of a semi-finished ophthalmic lens with a prismatic holding block and a method for producing such pre-production assembly, the method may include receiving as input pre-collected data about typical values of calculated prism for lens with different parameters; and according to the received input, producing a pre-production assembly of semi-finished ophthalmic lens with prismatic holding block. The pre-production assembly may include a semi-finished ophthalmic lens having one face finished with a base curvature; and a block assembly attached to the finished face of said lens, the block assembly having a connector to mount the semi-finished lens on a processing device and an adhesive layer adhering the block assembly to the finished face of the lens, the block assembly having a prism value determined according to lens parameters and the pre-collected data about typical values of calculated prism for lens with different parameters.

Abstract: A system and method for optical measurement, the system comprising a camera having a lens unit and an image sensor, the image sensor configured to generate image data based on light received onto the sensor; a prism device to receive light from two different angles and to relay the light through the lens unit onto respective two portions of the image sensor; and a processor to receive image data from the two portions of the image sensor; identify key points of the image data from the two portions; create a three-dimensional model of an object based on the image data from the two portions; and calculate based on the key points parameters of the object.

Abstract: A method for designing ophthalmic lenses, the method comprising calculating an effective refraction index of a lens based on a unique transmission spectrum created by at least one factor related to parameters of at least one of the lens and wavelength dependency of the index of refraction of the lens material, calculating a topography of the lens to achieve a required optical power, based on the calculated effective index of refraction and producing the lens with the calculated topography.

Abstract: A method for determining parameters of the vision of an eye of a patient. The method comprises: constituting a part of a process of making a prescription for a corresponding lens via which the patient is expected to gaze in at least two different directions; and measuring in one of the two directions all of the following parameters of the eye's vision: sphere power, cylinder and cylinder axis, and measuring in the other of the two directions at least two of said parameters.