Abstract: Control systems for liquid lenses can use feedback control using one or more measured parameters indicative of a position of the fluid interface in the liquid lens. Capacitance between a fluid and an electrode in the liquid lens can vary depending on the position of the fluid interface. Current mirrors can be used for making measurements indicative of the capacitance and/or the fluid interface position. The liquid lens can be calibrated using the measurements indicative of capacitance and/or fluid interface position as the voltage is driven across an operational range. A control system can use pulse width modulation (PWM) for driving a liquid lens, and a carrier frequency for the PWM signals can be varied to control power consumption in the liquid lens. The slew rate can be adjustable to control power consumption in the liquid lens.

Abstract: A method of designing a fluid-filled contact lens (103) is described. The method involves generating a computational model that includes a fluid-filled lens (103) and the shape of a cornea causes deformation of an internal structure of the fluid-filled lens (103) to generate a deformed, fluid-filled lens (103) with altered optical properties. The method also includes modelling (5) the optical properties of the deformed, fluid-filled lens (103). The shape of the fluid-filled lens (103) is then adjusted (7) to reduce the effects of the deformation on the optical properties. This is referred to as an adjusted fluid-filled lens (103). A corresponding off-eye lens design is generated (110 based on the adjusted fluid-filled lens design.

Abstract: An ophthalmic lens for myopia control. A first surface of the lens varies across the lens to form a first surface power map. A second surface of the lens varies across the lens to form a second surface power map. Each of the first and second surface power maps comprise a spiral. The spirals formed by the first and second surface power maps twist in opposing directions. Related methods are also described.

Abstract: A windshield corrective optical system includes a motor vehicle having a windshield. A camera is positioned within an occupant compartment of the motor vehicle directed toward the windshield and receiving light rays passing through the windshield. A sensor is configured to receive the light rays. A corrective element is configured to allow passage of the light rays through the corrective element to the sensor. The corrective element corrects aberrations of the light rays induced by passing through the windshield prior to the light rays reaching the sensor.

Abstract: An ophthalmic contact lens configured to treat color vision deficiency is presented herein. The contact lens includes a tinted region containing either or both of a first dye that is configured to absorb at least 50% of incident light in a spectral band between 480 nanometers to 500 nanometers and a second dye that is configured to absorb at least 50% of incident light in a spectral band between 550 nanometers to 580 nanometers. A method of manufacturing such a contact lens and a process of forming an ophthalmic contact lens by an additive manufacturing process is also presented.

Abstract: There is presented a method for geometrically modifying high-index dielectric structures on a support structure which includes steps of providing a support structure and a first plurality of high-index dielectric structures supported by the support structure. The method includes changing a geometry of the high-index dielectric structures within a second plurality of high-index dielectric structures, being a sub-set of the first plurality of high-index dielectric structures. The geometry is changed by photothermally melting some of the high-index dielectric structures within the second plurality of high-index dielectric structures by irradiating them with incident electromagnetic radiation, and thereby exciting resonances associated with each of the high-index dielectric structures within the second plurality of high-index dielectric structures.

Abstract: An electronic apparatus includes a housing and a covering structure. The housing has a light transmission portion. The covering structure includes a plurality of coating layers sequentially stacked above the light transmission portion. The coating layers respectively have different thicknesses, different refractive indices, different reflectivities, and different transmissivities. Reflected light of the coating layers presents a virtual image with a pattern.

Abstract: A contact lens for application to a human eyeball capable of emitting ultrasonic pressure waves from a plurality of piezoelectric transducers to mitigate the effects of airborne eye irritants and infectious microorganisms. The piezoelectric transducers converts mechanical energy applied upon the contact lens from the eyelid as the eyelid blinks and/or winks into electrical energy to be used for emitting ultrasonic pressure waves from the piezoelectric transducers. The ultrasonic pressure waves destroy airborne microorganisms near the contact lens. A photodiode onboard the contact lens indicates when the eyelid is not closed in order to limit or prevent emission of ultrasonic pressure waves from the piezoelectric transducers while the eyelid is closed. An antenna onboard the contact lens receives information from augmented reality glasses or other computing devices.

Abstract: An apparatus, worn over the eyes of a user, that restores visual clarity to the user in response to a change associated with a film of fluid over the apparatus. In an embodiment the apparatus includes a smart contact portion having at least a first convex surface, a second convex surface, and a concave surface. The apparatus further includes set of liquid thickness sensors embedded upon the first convex surface. The apparatus further includes an electrochemical storage device and a computing module. The apparatus further includes a plurality of ultrasonic transducers embedded upon the first convex surface. The apparatus further includes an electroactive lens structure embedded within central portion of the first convex surface. The apparatus further includes lens controllers that apply electrical signals to the electroactive lens structure to change at least one physical characteristic of the electroactive lens structure based on control signals from the computing module.

Abstract: Provided is a camera module, and a camera module including a core plate having a cavity for accommodating a conductive liquid and a nonconductive liquid; an electrode unit disposed on the core plate and electrically connected to the conductive liquid; an insulating unit disposed in the electrode portion and blocking contact of the nonconductive liquid; and a control unit for controlling voltages applied to the electrode unit, wherein the electrode unit includes a first electrode and a second electrode that change the interface between the conductive liquid and the nonconductive liquid by electromagnetic interaction, the first electrode includes a plurality of electrode sectors arranged sequentially along a circumferential direction about an optical axis, and the control unit sequentially controls voltages applied to the plurality of electrode sectors.

Abstract: Control systems for liquid lenses can use feedback control using one or more measured parameters indicative of a position of the fluid interface in the liquid lens. Capacitance between a fluid and an electrode in the liquid lens can vary depending on the position of the fluid interface. Current mirrors can be used for making measurements indicative of the capacitance and/or the fluid interface position. The liquid lens can be calibrated using the measurements indicative of capacitance and/or fluid interface position as the voltage is driven across an operational range. A control system can use pulse width modulation (PWM) for driving a liquid lens, and a carrier frequency for the PWM signals can be varied to control power consumption in the liquid lens. The slew rate can be adjustable to control power consumption in the liquid lens.

Abstract: An apparatus for deflecting laser radiation comprises: a first lens array comprising a plurality of first lenses arranged next to one another to permit the laser radiation to at least partially pass through the first lens array; a second lens array comprising a plurality of second lenses arranged next to one another to at least partially pass through the second lens array laser radiation that has passed through the first lens array; a rotatable or pivotable first mirror arranged between the first and second lens arrays to deflect in a direction of the second lens array the laser radiation that has passed through the first lens array; and an objective lens to focus laser radiation that has passed through the second lens array into a working plane.

Abstract: Provided is a head-mounted display that enables viewing of a stereoscopic image without visual fatigue caused by vergence-accommodation conflict. A head-mounted display includes a display device to display images for the left eye and the right eye on a screen, virtual image forming optical systems for the left eye and the right eye, respectively disposed with respect to images for the left eye and the right eye on the screen, and wide-focus lenses for the left eye and the right eye having a negative focal length with a range, and respectively disposed with respect to the virtual image forming optical systems for the left eye and the right eye so as to overlap optical axis directions of the virtual image forming optical systems for the left eye and the right eye. By respectively displaying virtual images of images, a permissible range of vergence and accommodation is expanded.

Abstract: [Problem to be Solved] There are provided an optical system having good imaging performance, an optical apparatus, and a method for manufacturing the optical system. [Solution] An optical system OL used in an optical apparatus, such as a camera 1, includes a diffractive optical element GD and at least one specific lens Lp, which is a lens made of crystalline glass. The specific lens Lp satisfies the condition expressed by the following expression: ?gFp+0.0017×?dp<0.730, where ?gFp represents partial dispersion ratio of a medium of the specific lens Lp, and ?dp represents the Abbe number of the medium of the specific lens Lp at a d line.

Abstract: An antireflection film 3 provided on an optical substrate 2 of an optical member 1 has a reflectivity adjusting film 4 including a first layer 10, a second layer 11 having a refractive index higher than a refractive index of the first layer 10, a third layer 12 having a refractive index lower than a refractive index of the second layer 11, and a photocatalyst film 5 including one or more photocatalytically active layers 14 containing titanium dioxide, in which a thickness of the reflectivity adjusting film measured from a surface 4a is equal to or greater than 20 nm and less than 150 nm, the photocatalyst film 5 is provided between the reflectivity adjusting film 4 and the optical substrate 2, an interface 5a between the photocatalyst film 5 and the reflectivity adjusting film is disposed at position spaced apart from the surface 4a by a distance equal to or shorter than 150 nm, and a total thickness of the photocatalytically active layers 14 is equal to or greater than 350 nm and equal to or smaller than 1,0

Abstract: A laser beam combining device includes an emission optical system that emits a plurality of circular laser beams propagated coaxially and having mutually different wavelengths, and a diffractive optical element that is concentric and diffracts the plurality of circular laser beams. The diffractive optical element diffracts the plurality of circular laser beams in accordance with the wavelengths of the circular laser beams, such that local diffraction angles of diffracted light of the plurality of circular laser beams incident at mutually different local incidence angles are equal to each other.

Abstract: The present disclosure discloses an imaging lens assembly. The imaging lens assembly includes, sequentially from an object side to an image side of the imaging lens assembly, a first lens having a positive refractive power and a convex object-side surface; a second lens having a negative refractive power and a concave image-side surface; and at least one subsequent lens. At least one of the first lens, the second lens, or the at least one subsequent lens is a glass aspheric lens. A transmittance T1 of the imaging lens assembly corresponding to a wave band 650 nm satisfies: T1>85%, a transmittance T2 of the imaging lens assembly corresponding to a wave band 490 nm satisfies: T2>88%, and a transmittance T3 of the imaging lens assembly corresponding to a wave band 430 nm satisfies: T3>75%.

Abstract: An image capturing lens system includes a first lens having negative refractive power, a second lens having positive refractive power while having a convex object-side surface, a third lens having positive refractive power, a fourth lens having positive refractive power, a fifth lens having negative refractive power with a concave object-side surface and a concave image-side surface, and a sixth lens having positive refractive power.

Abstract: An electronic contact lens contains electrical components connected by an electrical interconnect. The electrical interconnect has a flat body, with electrical conductors running length-wise along the body. The flat body is oriented perpendicular rather than parallel to the inner and outer surfaces of the contact lens to reduce a visible profile of the interconnect, reducing the amount of light blocked from entering the eye. The body has a curvature shaped to conform to the curvature of the contact lens. As examples, the interconnect may be connected with an electrical component using a tab perpendicular to the flat body of the interconnect, or by forming an edge connection with electrical contacts of the component located along an edge of the component, or through one or more exposed vias formed on the component.

Abstract: The optical product includes an optical multilayer film which is disposed on one surface or both surfaces of a base directly or via an intermediate film. The optical multilayer film is obtained by alternately disposing an SiO2 layer and a ZrO2 layer, forming nine layers in total, such that a first layer counting from the base is the SiO2 layer. The optical thickness of the SiO2 layer as the first layer is not greater than 0.120×?/4 when a design wavelength is ? (500 nm), the optical thickness of the ZrO2 layer as a second layer is not less than 0.400×?/4, the optical thickness of the SiO2 layer as a third layer is not less than 0.230×?/4, and the optical thickness of the SiO2 layer as a seventh layer is not less than 0.450×?/4.