Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in ascending numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging surface of an image sensor, wherein a conditional expression f/f2+f/f3<?0.4 is satisfied, where f is a focal length of the optical imaging system, f2 is a focal length of the second lens, and f3 is a focal length of the third lens, and a conditional expression TTL/(2*IMG HT)<0.69 is satisfied, where TTL is a distance along the optical axis from an object-side surface of the first lens to the imaging surface of the image sensor, and IMG HT is one-half of a diagonal length of the imaging surface of the image sensor.

Abstract: A method for measuring an optical error of a subject comprises displaying to said subject stimuli comprising different levels of blurring.

Abstract: Disclosed is a method for determining an optical function of a progressive ophthalmic lens for a wearer, including: providing a prescription of the wearer; providing wearing data including at least a numerical parameter; providing by at least one processor a set of predefined optical functions including at least a first predefined optical function adapted to the prescription of the wearer and to a first predefined wearing parameter and a second predefined optical function for the prescription of the wearer and to at least a second predefined wearing data parameter, the second predefined optical function being different from the first; and determining an optical function of the progressive ophthalmic lens, so: when the wearing data parameter?a threshold value, the optical function of the lens=first predefined optical function, and when the wearing data parameter<the threshold value, the optical function=the second predefined optical function.

Abstract: Apparatuses, systems and methods for providing improved ophthalmic lenses, particularly intraocular lenses (IOLs), include features for reducing dysphotopsia effects, such as haloes and glare, in extended range of vision lenses. Exemplary ophthalmic lenses can include an optic including a first surface and a second surface each disposed about an optical axis and extending radially outward from the optical axis to an outer periphery of the optic. A diffractive profile including a plurality of echelettes is disposed on the first surface such that no echelette on the first surface repeats between the optical axis and the outer periphery of the optic.

Abstract: An aspheric lens includes a treatment zone through which light passes to image at the retina of eyeball and a positioning zone of non-visual area outside treatment zone. The treatment zone includes a base curve and a reverse curve formed on outside of base curve. The positioning zone includes an alignment curve and a peripheral curve located outside alignment curve. A center point is formed in center of base curve, the junction of base curve and reverse curve forms a first point of intersection, the junction of reverse curve and alignment curve forms a second point of intersection, and the junction of alignment curve and peripheral curve forms a third point of intersection. The linear distance between the center point and the cornea of the preset eyeball is between 9 ?m˜21 ?m. The linear distance between the first point of intersection and the cornea of the preset eyeball is between 89 ?m˜189 ?m.

Abstract: A lens module includes a first lens having refractive power, a second lens having refractive power, a third lens having refractive power, a fourth lens having refractive power, a fifth lens having refractive power and having a concave object-side surface and a concave image-side surface, and a sixth lens having refractive power and a concave image-side surface. The first to sixth lenses are sequentially disposed from an object side to an image side.

Abstract: Disclosed is an ophthalmic lens including a transparent substrate with a front main face and a rear main face, at least one of the main faces being coated with a multilayered interferential stack (IF stack), including at least one HI layer having a refractive index higher than or equal 1.55 and at least one LI layer having a refractive index lower than 1.55, characterized in that an electrochromic stack (EC stack): is part of the multilayered interferential stack; or is directly deposited onto the multilayered interferential stack, so as to form a multilayered interferential coating (IF coating).

Abstract: A zoom lens includes, in order from an object along an optical axis: a first lens group having a negative refractive power; a second lens group having a positive refractive power; a third lens group having a negative refractive power; a fourth lens group; and a fifth lens group. When the zoom lens performs varying magnification, the distance between the first and second lens groups changes, the distance between the second and third lens groups changes, the distance between the third and fourth lens groups changes, the distance between the fourth and fifth lens groups changes, the second and fourth lens groups move along the same trajectory along the optical axis, and at least the third lens group moves along the optical axis.

Abstract: A method for preparing an ophthalmic lens to be edged based on a presentation lens, includes: fixing a first support a face of the presentation lens, the first support's shape defining a first reference point; positioning the presentation lens by the first support in an optical machine having an image sensor; acquiring, with the image sensor, an image of the presentation lens; determining, on the acquired image, the outline of the presentation lens; positioning a pupillary point relative to the outline; positioning the outline of the presentation lens relative to the ophthalmic lens so the pupillary point is superimposed on a centering point of the ophthalmic lens; and fixing a second support a face of the ophthalmic lens, the second support having a shape defining a second reference point, the second support fixed on the ophthalmic lens so its second reference point is superimposed on the first reference point.

Abstract: A model eye is disposed on a reference light path of reference light in a reference optical system so as to reflect or scatter the reference light at a model retina in order to form an interference optical system used to obtain interference light from the reference light of the reference optical system and signal light illuminated onto an examined eye in a signal optical system.

Abstract: A contact lens having an amount of at least one cooling agent and at least one TRPV1 inhibitor releasably adhered is described as well as method of manufacturing the same. The contact lens can be comfortably worn by contact lens wearers and can increase the duration of comfortable lens wearing time and/or reduce lens awareness events and/or reduce contact lens dryness in a symptomatic contact lens wearer and further can reduce or avoid any stinging/burning sensation when the contact lens is first used or a short time thereafter.

Abstract: A system and method for an eye test application for mobile devices and in particular to applications for self-determination of eyeglass prescription via mobile computing devices comprising Simultaneous Split Point Focus (SSPF) and Low Latency Dynamic Distance Monitoring (LLDDM) for enabling self-determination of eyeglass prescription for a user via a mobile computing device, the device comprising: volatile and non-volatile memory for storing data; a processor configured for executing program instructions stored in the non-volatile memory; a visual display screen adapted to receive image information from the processor to present instructions and images to a user; and a camera configured to receive images of the user's pupils during a test situation; wherein the system comprises application program instructions for directing the processor to undertake a method for determining an eyeglass prescription, the method comprising: determining if an eye of the user is myopic, and if the user's eye is myopic; determinin

Abstract: The present application discloses optical frame glasses, comprising lens. The lens has a circular central area and a plurality of annular focus-increasing compensation areas surrounding the central area, the center of the circular central area coincides with the optical center of the lens, wherein focal powers of the central area and the plurality of focus-increasing compensation areas progressively increase in a radially outward direction. The optical frame glasses in the present application can eliminate high-order aberrations of eyes, thereby limiting the occurrence and development of myopia. In addition, the optical frame glasses of the present application do not touch the eyeballs, the wearing method is simple, no discomfort is caused after worn, the maintenance method is simple, and the manufacturing cost is low.

Abstract: Disclosed is a hoist apparatus including: an electric motor, and a control box that can be electrically powered by a power supply, the control box including at least an electronic control circuit, an electrical wiring and an external casing forming a box of the control box, the external casing including at least sidewalls and a removable lid closing the box, the control box controlling the operations of the electric motor thanks to the electrical wiring connected to the electronic control circuit, to the power supply and to the electric motor, and a monitoring device, wherein the monitoring device is an insert of the box, the monitoring device being arranged within an enclosure, the enclosure being an added part of the box or being an exchanged part of the box and wherein the monitoring device is connected to the electrical wiring.

Abstract: A method for automatically assessing the near vision accommodative state of a non-presbyopic individual, the method being carried out by computer and performed after an assessment of the individual's far vision leading to the generation of a far vision assessment report, includes generating a near vision assessment report optionally including at least one recommendation dependent on the far vision assessment report.

Abstract: The invention concerns method and system for determining a lens of customized color, said method comprising the steps of determining a target colorimetric data set; providing access to a database comprising data representing colors; using a plurality of simulation modules to calculate, based on said data from the database, a plurality of simulated colorimetric data of the lens substrate combined with a mixture of dyes of determined dye(s) combination, composition and amount or with a multilayer stack as a function of determined layers composition and thicknesses; and, color matching the plurality of simulated colorimetric data with the target colorimetric data set so as to determine one or a plurality of combinations of said lens substrate with a determined mixture of dyes or with a determined multilayer stack.

Abstract: An optical see-through (OST) near-eye display (NED) system is presented, integrating ophthalmic correction for an eye of a user, comprising a partially transmissive partially reflective lens, including an inner surface characterized by an inner surface radius of curvature exhibiting a first optical power, and an outer surface characterized by an outer surface radius of curvature exhibiting a second optical power, said partially transmissive partially reflective lens is configured to be facing said eye, and to at least partially transmit incoming light of an outward scene to said eye; and an electro-optical unit, configured to be optically coupled with said partially transmissive partially reflective lens, and including a light display configured to project a light beam image onto said inner surface, so to enable reflection of said light beam image toward said eye, said electro-optical unit is configured to be located at a glabellar region of said user.

Abstract: A contact lens for use in preventing or slowing the development or progression of myopia, and methods relating thereto, are described. The lens includes an optic zone comprising a central region having a first optical axis, and a curvature providing a base power, and centred on a centre of curvature that is on the first optical axis. The optic zone comprises an annular region, wherein the annular region surrounds the central region. The annular region comprises at least one maximum add power meridian having a curvature providing a maximum add power, and centred on a centre of curvature that is a first distance from the first optical axis. The annular region comprises at least one intermediate add power meridian, having a curvature providing an intermediate add power of between zero dioptres of add power and the maximum add power, and centred on a centre of curvature that is a different distance from the optical axis than the first distance.

Abstract: A zoom optical system (ZL) comprises, in order from an object: a first lens group (G1) having a positive refractive power; a second lens group (G2) having a negative refractive power; a third lens group (G3) having a positive refractive power; and a subsequent lens group (GR), wherein upon zooming, a distance between the first lens group (G1) and the second lens group (G2) changes, a distance between the second lens group (G2) and the third lens group (G3) changes, and a distance between the third lens group (G3) and the subsequent lens group (GR) changes, the subsequent lens group (GR) comprises a focusing lens group that moves upon focusing, and the second lens group (G2) comprises a partial group that satisfies following conditional expressions, 1.40<fvr/f2<2.30, 1.80<f1/fw<3.

Abstract: Methods and systems wherein laser induced refractive index changes by focused femtosecond laser pulses in optical polymeric materials or optical tissues is performed to address various types of vision correction.