The present invention relates to a mobile terminal comprising a liquid lens including: a side wall part; a first and a second glass layer which cover one surface and the other surface of the side wall part, respectively, to form a receiving part; a plurality of electrode modules, each of which is positioned on the side wall part and includes a first and a second electrode; an insulation layer covering the first electrode; a nonpolar liquid filled in the receiving part; and a polar liquid which is separated from the polar liquid in layers, is filled in the receiving part, and is in contact with the second electrode, wherein a boundary surface between the nonpolar liquid and the polar liquid changes into a shape protruding toward the polar liquid as a voltage applied to the electrode modules increases, and a control part differently controls at least a part of the voltage applied to the plurality of electrode modules to adjust a position of a protrusion of the boundary surface.

Provided is an optical device for reducing the time for auto focusing (AF) performed by a contrast detection system, the optical device comprises a liquid lens having a curvature that varies on the basis of an applied electrical signal and the liquid lens may be auto-focused at one time from the current curvature (i.e., the first curvature state, p) to a target curvature corresponding to a distance to the subject (i.e., a second curvature state) based on the FV slope ratio.

Provided is a liquid iris for adjusting the amount of light passing therethrough, comprising, in order to provide continuously changing iris steps by using an electrowetting technique, an insulating layer made of a transparent material, a cover glass provided on and spaced apart from the insulating layer, a first fluid provided between the insulating layer and the cover glass and forming a path through which light passes, a second fluid provided, as an opaque fluid immiscible with the first fluid, between the insulating layer and the cover glass, a transparent electrode pattern provided at the lower part of the insulating layer so as to form a potential difference with the first fluid, and a control unit, which controls the potential difference so as to variably change the surface curvature of the first fluid and controls the area of the first fluid coming into contact with the cover glass.

An eye-implantable device including an electrowetting lens is provided that can be operated to control an overall optical power of an eye in which the device is implanted. A lens chamber of the electrowetting lens contains first and second fluids that are immiscible with each other and that differ with respect to refractive index. By applying a voltage to electrodes of the lens, the optical power of the lens can be controlled by affecting the geometry of the interface between the fluids. One of the fluids is an aqueous fluid that is isotonic relative to the aqueous humor of the eye to prevent flux of water into or out of the lens chamber. Thus, the lens chamber may be composed of water-permeable materials. Such water-permeable materials may be flexible, to permit the lens to be folded into a smaller profile during implantation.

A lens module includes a printed circuit board, a lens component, and at least two electric conductors. The lens component includes a first lens and a microscope base, the first lens is formed on the microscope base, the microscope base is formed on the printed circuit board, and the first lens is electrically conductive and deforms under voltage. The first lens is electrically connected to the printed circuit board by the electric conductors. The printed circuit board outputs a voltage to the first lens through the electric conductors; the first lens deforms according to the voltage thereby changing a focal distance of light passing through the first lens. The disclosure also relates to an electronic device using the lens module. The lens module can has a zoom function and has a litter volume.

A method includes providing frames of video data for being displayed by a head mounted display (HMD). Pixel data is encoded in a pixel of at least some of the video data frames, the encoded pixel data defining a focal state of an optics block of the HMD for displaying the respective frame of the video data to a user. The predetermined focal state is determined from a plurality of available focal states of the optics block, each focal state corresponding to a different focal plane of a virtual image generated based on the video data. The pixel used for encoding may be disposed outside a region of the frame that is displayable by the HMD.

A hybrid lens is disclosed including optically coupled varifocal lens and adaptive lens. The varifocal lens is configured for varying optical power of the hybrid lens, and an adaptive lens includes a voltage-controlled element for varying optical power of the adaptive lens in coordination with varying the optical power of the varifocal lens and responsive to variation of the optical power of the hybrid lens, for lessening an optical aberration of the hybrid lens. The hybrid lens may be used in head-mounted displays e.g. for lessening a vergence-accommodation conflict.

The present invention provides a circuit for controlling a voltage for driving a liquid lens including a first voltage generator for outputting a first voltage; a second voltage generator for outputting a second voltage having an opposite polarity to the first voltage; a first switch for selecting one of the first voltage and a ground voltage, and transmitting the selected voltage; a second switch for selecting one of the second voltage and the ground voltage, and transmitting the selected voltage; and a third switch for selecting one of a voltage selected by the first switch and the voltage selected by the second switch, and transmitting the selected voltage, wherein the third switch is plural in number, and the first switch is connected in common to the plurality of third switches.

An optical device can include an optical member, positioned at an interface between a first liquid and a second liquid. The optical member can be positionally actuated using the first and second liquid. The optical member may include a plastic lens, a ball lens, a ball lens array, an actuated liquid lens, a biconcave lens, a biconvex lens, a plano-convex, a plano-concave, a negative meniscus lens, a positive meniscus lens, a convex-concave lens, or a concave-convex lens, or any other suitable lens type. The optical member can be actuated in an optical tilt direction, in a left-right horizontal direction, in an up-down vertical direction, in a yaw rotational direction, in an axial direction, or a combination thereof. The optical member can be actuated using electrowetting, using magneto rheological fluids, using static electrofields, using electrical actuation, or using mechanical actuation, for example.

In order to effectively perform auto focusing and an OIS function, provided is an optical device in a first diopter state, the optical device comprising: a liquid lens having a variable diopter; a memory in which regions of interest (ROIs) according to the variable diopter are recorded; a lens control unit for retrieving a first ROI corresponding to the first diopter from the memory and configuring the first ROI; and a diopter operating unit for auto-focusing the first ROI to change the liquid lens to have a second diopter.