Abstract: An eyewear device including an electronic frame. The electronic frame includes a front frame element arranged to at least partially house an electrochromic lens, temple connected to the front frame element, a photosensitive sensor arranged on the temple to measure data relating to a light reflected from part of a wearer's face when the electronic frame is worn by the wearer, and a control circuit configured to control the electrochromic lens according to the measured data.

Abstract: A system that includes an optical device intended to be worn by a user and a calculation module. The optical device includes a light sensor, the light sensor being located in an internal side of the optical device and in a vicinity of a front part of the optical device, the light sensor being configured to determine an amount of light that it receives, and the calculation module being configured to determine an amount of backlight received by the optical device using the amount of light received by the light sensor.

Abstract: A method for manufacturing a set of semi-finished lenses and a lens from a semi-finished lens of the set and a set of semi-finished lenses each intended to be used in the manufacturing of a finished lens of determined target power, each semi-finished lens having a base curve chosen among a number N of base curves, wherein each base curve is associated to a respective range of powers of finished ophthalmic lenses to be manufactured, and each semi-finished lens of the set comprises a recorded holographic component, wherein the holographic components of the set exhibit a limited number of configurations, and each holographic component configuration is associated exclusively to one base curve among the N base curves.

Abstract: An eyewear is adapted for fitting a user's face and for determining an eye direction of a user's eye. The eyewear is provided with at least three light sensors each configured for outputting a measured light intensity value that corresponds to ambient light originating from surroundings of the user outside the eyewear and reflected or scattered by the user's eye. Processing circuitry of the eyewear determines the eye direction from the measured light intensity values.

Abstract: An optical element is configured to be worn in front of an eye of a wearer. The optical element has two main surfaces and includes at least one holographic diffusive element having diffusive properties resulting from spatial variations of refractive index of said holographic diffusive element. The spatial variation of refractive index is greater than 0.001 at at least one given wavelength, on a distance less than 30 ?m. An optical equipment includes the optical element and methods for recording a holographic medium onto an optical lens.

Abstract: An eyewear is adapted for fitting a user's face and for determining an eye direction of a user's eye. The eyewear is provided with at least three light sensors each configured for outputting a measured light intensity value that corresponds to ambient light originating from surroundings of the user outside the eyewear and reflected or scattered by the user's eye. A processing unit of the eyewear determines the eye direction from the measured light intensity values.

Abstract: An ophthalmic lens and a method of manufacturing the ophthalmic lens, the ophthalmic lens including a base lens that includes at least a layer of low-birefringence material and at least one holographic component recorded on a surface of the layer of low-birefringence material, and an auxiliary lens assembled to the base lens.

Abstract: A system that includes an optical device intended to be worn by a user and a calculation module. The optical device includes a light sensor, the light sensor being located in an internal side of the optical device and in a vicinity of a front part of the optical device, the light sensor being configured to determine an amount of light that it receives, and the calculation module being configured to determine an amount of backlight received by the optical device using the amount of light received by the light sensor.

Abstract: An ophthalmic lens and a method of manufacturing the ophthalmic lens, the ophthalmic lens including a base lens that includes at least a layer of low-birefringence material and at least one holographic component recorded on a surface of the layer of low-birefringence material, and an auxiliary lens assembled to the base lens.

Abstract: A lens element intended to be worn in front of an eye of a wearer, the lens element being adapted to provide a prescribed dioptric correction function in a prescription plane, the lens element including an arrangement of microoptical elements. When receiving a collimated beam of monochromatic light, the lens element is configured to produce a primary luminous intensity maximum in a prescription plane, and the arrangement of microoptical elements is configured to produce at least one first secondary luminous intensity maximum at a first proximity difference from the prescription plane and at least one second secondary luminous intensity maximum at a second proximity difference from the prescription plane, the first proximity difference and the second proximity difference having opposite signs.

Abstract: An optical article that includes an ophthalmic lens that includes a substrate, a first layer comprising liquid crystals being disposed on at least part of the substrate, and a first and a second electrode made of a conductive material, and a voltage source electrically connected to the first and second electrodes and configured to control an orientation of the liquid crystals depending on the voltage applied. The ophthalmic lens further includes a second layer made of photoconductive material placed between the electrodes, and the optical article further includes a light projector configured to project a light pattern on the second layer of the ophthalmic lens, the second layer being locally conductive when illuminated by the light pattern, the light pattern corresponding to a pattern of refractive index modification to be induced by the liquid crystals of the first layer.

Abstract: An optical article including a substrate, and a holographic waveguide covering at least part of the substrate and including two main surfaces, at least one of them conforming to a surface of the substrate, and at least first and second zones that are configured so that light incoming on one of the first and second zones is at least partially guided towards the other of the first and second zones.

Abstract: An eyewear is adapted for fitting a user's face and for determining an eye direction of a user's eye. The eyewear is provided with at least three light sensors each configured for outputting a measured light intensity value that corresponds to ambient light originating from surroundings of the user outside the eyewear and reflected or scattered by the user's eye. A processing unit of the eyewear determines the eye direction from the measured light intensity values.

Abstract: An eyewear device including an electronic frame. The electronic frame includes a front frame element arranged to at least partially house an electrochromic lens, temple connected to the front frame element, a photosensitive sensor arranged on the temple to measure data relating to a light reflected from part of a wearer's face when the electronic frame is worn by the wearer, and a control circuit configured to control the electrochromic lens according to the measured data.

Abstract: A method and system for image display with a head-mounted device, which use a seethrough tunable diffractive mirror, such as a see-through tunable holographic mirror or seethrough tunable LCD array mirror, which mirror is useful in providing augmented reality.

Abstract: An optical element is configured to be worn in front of an eye of a wearer. The optical element has two main surfaces and includes at least one holographic diffusive element having diffusive properties resulting from spatial variations of refractive index of said holographic diffusive element. The spatial variation of refractive index is greater than 0.001 at at least one given wavelength, on a distance less than 30 ?m. An optical equipment includes the optical element and methods for recording a holographic medium onto an optical lens.

Abstract: Disclosed is a method for determining an eye parameter of a user of a display device, the eye parameter relating to a dioptric parameter of an ophthalmic lens to be provided to the user, the method including: a display device providing step, during which a binocular display device is provided to the user,—an image display step, during which an image is displayed to the user when using the display device; a display parameter modifying step, during which at least one parameter of the display device is modified so as to modify the virtual display distance of the perceived image, wherein the display parameter modifying step is repeated until image subjective quality of the perceived image is perceived by the user as optimal; and an eye parameter determining step during which an eye parameter is determined based on the parameter of the display device.

Abstract: An ophthalmic lens and a method of manufacturing the ophthalmic lens, the ophthalmic lens including a base lens that includes at least a layer of low-birefringence material and at least one holographic component recorded on a surface of the layer of low-birefringence material, and an auxiliary lens assembled to the base lens.

Abstract: An optical article that includes an ophthalmic lens that includes a substrate, a first layer comprising liquid crystals being disposed on at least part of the substrate, and a first and a second electrode made of a conductive material, and a voltage source electrically connected to the first and second electrodes and configured to control an orientation of the liquid crystals depending on the voltage applied. The ophthalmic lens further includes a second layer made of photoconductive material placed between the electrodes, and the optical article further includes a light projector configured to project a light pattern on the second layer of the ophthalmic lens, the second layer being locally conductive when illuminated by the light pattern, the light pattern corresponding to a pattern of refractive index modification to be induced by the liquid crystals of the first layer.

Abstract: Aa method for manufacturing a set of semi-finished lenses and a lens from a semi-finished lens of the set and a set of semi-finished lenses each intended to be used in the manufacturing of a finished lens of determined target power, each semi-finished lens having a base curve chosen among a number N of base curves, wherein each base curve is associated to a respective range of powers of finished ophthalmic lenses to be manufactured, and each semi-finished lens of the set comprises a recorded holographic component, wherein the holographic components of the set exhibit a limited number of configurations, and each holographic component configuration is associated exclusively to one base curve among the N base curves.