Abstract: Disclosed is an apparatus for charging a battery comprising a first charging device configured to communicate with at least one second charging device, the first charging device and the at least one second charging device configured to charge the battery, and comprising a first controller configured to control the first charging device, wherein the first controller determines the number of the at least one second charging devices by communicating with a second controller.

Abstract: Orthokeratology lens that uses aspheric E value to control tear height to sloe down the growth rate of the eyeball. The lens includes treat treatment zone through which light passes to image at retina of eyeball and positioning zone of non-visual area outside treatment zone. The treatment zone includes base curve and reverse curve formed on outside of base curve. The positioning zone includes alignment curve and peripheral curve located outside alignment curve, Center point is formed in center of base curve, junction of base curve and reverse curve forms first point of intersection, junction of reverse curve and alignment curve forms second point of intersection, and junction of alignment curve and peripheral curve forms third point of intersection. Linear distance between center point and cornea of preset eyeball is between 9 ?m and 21 ?m, Linear distance between first point of intersection and cornea of preset eyeball is between 89 ?m and 1189 ?m.

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 multi-curve multi-section alignment structure for an orthokeratology lens and a method thereof are disclosed. The orthokeratology lens includes a base curve formed on a central part of an inner surface thereof, and a reverse curve outwardly formed outside the base curve, an alignment curve outwardly formed outside the reverse curve and configured to align to a cornea of an eyeball, and a peripheral curve outwardly formed outside the alignment curve. The cornea has an alignment region contacting the alignment curve, and the alignment region is divided into sections, and the alignment curve includes alignment sections formed correspondingly in position to the sections and matching curvatures of the sections of the alignment region, so that the orthokeratology lens can be stably aligned with the eyeball, and when a wearer's eyelid is closed, the orthokeratology lens cannot decenter easily.

Abstract: A progressive lens has an optical center and a geometric center line. The progressive lens further comprises a first surface and a second surface. At least one of the first surface and the second surface is a free-form surface. The free-form surface comprises a nearsight region, a farsight region, and a transition region. The geometric center line passes through the nearsight region, the optical center, and the farsight region. A straight-line distance between a first reference point of the nearsight region and the optical center along a direction of the geometric center line is about 13 mm to about 25 mm. A straight-line distance between a second reference point of the farsight region and the optical center along a direction of the geometric center line is about 2 mm to about 5 mm. The disclosure also provides a progressive glasses.

Abstract: A contact lens is disclosed. The contact lens includes a gel substrate. The gel substrate includes astaxanthin having a mass percentage of 0.004% to 5%. The hydrogel composition and a method for manufacturing the contact lens are also disclosed.

Abstract: A device and method for designing an ophthalmic lens includes a design of shape according to a Zernike polynomial, and calculating a curvature of each point of the target surface shape to obtain a curvature distribution overall. A diopter distribution over the target surface shape corresponding to the obtained curvature distribution is calculated, and the calculated diopter distribution is matched against a preset diopter distribution. If matching, a processing machine is controlled to manufacture the ophthalmic lens according to the Zernike polynomial. If not matching, the Zernike polynomial is modified, until the actual surface shape as measured is sufficiently close to the target surface shape.

Abstract: An anti-reflective lens comprises a lens substrate and an anti-reflective layer formed on at least one surface of the lens substrate. The anti-reflective layer comprises a plurality of nano-structures spaced from each other. The plurality of nano-structures protrudes from the at least one surface of the lens substrate to form a compound-eye array. The anti-reflective layer is made of sol-gel composition. The disclosure also provides a method for manufacturing an anti-reflective lens.

Abstract: A lightweight and buoyant eyeglass which floats includes a spectacle frame and two spectacle lenses received in the spectacle frame. The spectacle frame and two spectacle lenses are made from a same material, cyclic block copolymer is a main component of the material.

Abstract: A progressive addition lens comprises a first lens layer, a second lens layer attached to a surface of the first lens layer, and a third lens layer attached to a surface of the second lens layer away from the first lens layer. The first lens layer, the second lens layer, and the third lens layer are made of different materials, thus refractive index of each layer is different, thus a visual acuity of the progressive addition lens is high. A progressive addition glasses using the progressive addition lens is also provided.

Abstract: A lightweight spectacle lens is disclosed. The spectacle lens includes a lens main body, and the lens main body includes two surfaces opposite to each other; and a functional film formed on at least one surfaces of the lens main body, and a main material of the lens main body is cyclic block copolymer.

Abstract: An adaptive spectacle lens includes a spectacle frame and a pair of progressive additional lenses mounted to the spectacle frame. Each progressive additional lens includes a distant vision region positioned at an upper portion. The distant vision region has a diopter of zero and functions with a pair of main lenses.

Abstract: A process for simulating correction of human eyeball for better visual acuity includes a processor and coupled memory. The memory stores program for processor to obtain geometric data and a wave-front aberration of human eyeballs and simulate an eyeball model. The eyeball model and an ophthalmic lens model are combined to form a correction system for visual acuity. According to the convex/concave lens imaging rule, and using an object placed in front of the eyeball, a determination is made of an optically uncorrected first image formed at a retina of the eyeball, and a visually-corrected second image formed at the retina of the eyeball. The first object image and the second object image can be output for comparison.

Abstract: A method for designing an ophthalmic lens includes establishing a B-spline curved surface of the ophthalmic lens. A merit function is established according to a preset dioptric power distribution on the target curved surface and a curvature distribution corresponding to the preset dioptric power distribution. A plurality of control points of the B-spline curved surface is selected. Coordinates of all the selected control points are substituted into the merit function, and a value of the merit function is calculated. Whether the calculated value is less than or equal to a preset value is determined. If yes, the optimized B-spline curved surface is determined as representing the target curved surface. Otherwise, at least one selected control point is moved to optimize the B-spline curved surface.

Abstract: An eye lens worn on a user's cornea monitors deformations of the cornea. The eye lens includes a substrate and at least one deformation sensor secured to the substrate. The deformation sensor is configured to monitor the curvature of cornea and any deformations, convert the deformations into digital signals, and transmit the digital signals out. A cornea monitoring system using the eye lens is also provided.

Abstract: A process for simulating correction of human eyeball for better visual acuity includes a processor and coupled memory. The memory stores program for processor to obtain geometric data and a wave-front aberration of human eyeballs and simulate an eyeball model. The eyeball model and an ophthalmic lens model are combined to form a correction system for visual acuity. According to the convex/concave lens imaging rule, and using an object placed in front of the eyeball, a determination is made of an optically uncorrected first image formed at a retina of the eyeball, and a visually-corrected second image formed at the retina of the eyeball. The first object image and the second object image can be output for comparison.

Abstract: An eye lens worn on a user's cornea monitors deformations of the cornea. The eye lens includes a substrate and at least one deformation sensor secured to the substrate. The deformation sensor is configured to monitor the curvature of cornea and any deformations, convert the deformations into digital signals, and transmit the digital signals out. A cornea monitoring system using the eye lens is also provided.

Abstract: The present invention discloses a transmit-receive (TR) front end. The TR front end comprises a low-noise amplifier (LNA); a power amplifier (PA); a transformer, coupled to the PA, for increasing a voltage swing and a power transmission of the PA; and a TR switch, coupled to the transformer at a first end and coupled to the LNA at a second end, wherein the second end is capable of being coupled to an antenna; wherein the LNA is single ended and there is no transformer between the LNA and the TR switch.

Abstract: The present invention discloses a transmit-receive (TR) front end. The TR front end comprises a low-noise amplifier (LNA); a power amplifier (PA); a transformer, coupled to the PA, for increasing a voltage swing and a power transmission of the PA; and a TR switch, coupled to the transformer at a first end and coupled to the LNA at a second end, wherein the second end is capable of being coupled to an antenna; wherein the LNA is single ended and there is no transformer between the LNA and the TR switch.

Abstract: The present invention discloses a transmit-receive (TR) front end. The TR front end includes a low-noise amplifier (LNA); a power amplifier (PA); a transformer, coupled to the PA, for increasing a voltage swing and a power transmission of the PA; and a TR switch, coupled between the transformer and the LNA. The LNA is single ended and there is no transformer between the LNA and the TR switch.