An image sensor includes an imaging device, an optical system including a liquid lens, a temperature sensor that detects a temperature of the liquid lens, a heater that heats the liquid lens, a temperature adjuster that controls the heater to adjust the temperature of the liquid lens to a predetermined temperature, a nonvolatile memory storing property information about the liquid lens, a refractive power controller that determines, based on a target refractive power and the property information stored in the nonvolatile memory, an application voltage applicable to the liquid lens adjusted to have the predetermined temperature and applies the application voltage to the liquid lens to control a refractive power of the liquid lens to match the target refractive power, and an image processor. The optical system, the nonvolatile memory, and the temperature sensor are disconnectable from a body module including the refractive power controller and the image processor.

An embodiment provides an optical device comprising: a lens assembly which includes a liquid lens comprising a first liquid and a second liquid forming an interface therebetween; a temperature sensor which senses the temperature of the liquid lens; and a controller which controls a driving signal for the liquid lens, wherein the controller controls the driving signal by using a first function when the sensed temperature is in a first temperature range and by using a second function different from the first function when the sensed temperature is in a second temperature range.

An electro-optic display having a viewing surface through which a user views the display, a bistable, electrophoretic medium, and at least one electrode arranged to apply an electric field to the electrophoretic medium, the display further comprising at least 10 micromoles per square meter of the viewing surface of at least one compound having an oxidation potential more negative that about 150 mV with respect to a standard hydrogen electrode, as measured at pH 8, where the compound is a sulfite salt or a salt of titanium (III), vanadium (II), iron (II), cobalt (II) or copper (I), a hydroquinone, a catechol, a dihydropyridine or a metallocene.

A circuit for controlling liquid lens includes a liquid lens including a common electrode and a plurality of individual electrodes including first to fourth individual electrodes, a voltage generator configured to supply a voltage to the plurality of individual electrodes and the common electrode in the liquid lens, and a controller configured to control timing to sequentially supply the voltage to each of the individual electrodes, wherein the controller applies the voltage to the second individual electrode after applying the voltage to the first individual electrode, applies the voltage to the third individual electrode after applying the voltage to the second individual electrode, and applies the voltage to the fourth individual electrode after applying the voltage to the third individual electrode, and wherein the first to fourth individual electrodes are disposed at the same angular interval from each other with respect to a center of the liquid lens.

The present embodiment relates to an imaging lens including: a first lens having a positive refractive power, a second lens having a negative refractive power; a third lens; a fourth lens; a fifth lens having a positive refractive power; and a sixth lens having a negative refractive power, wherein the first to sixth lenses are sequentially arranged from an object side to an image side, the first to third, the fifth, and the sixth lenses are solid lenses, the fourth lens includes a variable focus lens, and the Conditional Expression 0.7<TTL/imgH<1 is satisfied.

Disclosed herein are light emitting device that emit highly circularly polarized light. These devices may be used to form a dot-matrix display or an electronic information display comprised of a series of photopolymerizable, chiral liquid crystalline layers that can be solvent cast on a substrate. The mixture of chiral materials in each successive layer may be blended in such a way that each layer has the same chiral pitch and may also be blended so that the ordinary and extraordinary refractive indices in each layer match the other layers such that the complete assembly of layers will optically function as a single relatively thick layer of chiral liquid crystal. The chiral nematic material in each layer can spontaneously adopt a helical structure with a helical pitch. Further disclosed are pixel structures that not only emit light with brightness and chromaticity information, but also depth of focus information as well.

The present invention has as an object to, by controlling how oil injected into a liquid drop control device wet spreads, make it harder for bubbles to remain in a cell. A liquid drop control device of the present invention is characterized in that in at least one substrate, there is a gap between an end face of a lyophobic layer and a seal material and the lyophobic layer and the seal material make contact with each other in at least one place.

The present disclosure relates to eyeglass and a method for adjusting incident light into eyes. The eyeglass include: a crystalline lens condition acquisition member configured to acquire a condition of a crystalline lens of a user who wears the eyeglass; a lens of eyeglass including an electrowetting dual-liquid zoom lens assembly, the electrowetting dual-liquid zoom lens assembly including insulating liquid and conductive liquid which are encapsulated and driving electrodes configured to apply a voltage to the insulating liquid and the conductive liquid; and a driving device coupled to the crystalline lens condition acquisition member and the driving electrodes and configured to adjust the voltage of the driving electrodes in the case where the crystalline lens is in a tightened condition so as to convert light transmitted through the eyeglass to parallel light.

A variable diaphragm is provided. The variable diaphragm includes: first and second substrates opposite to each other; a light detector on a side of the first substrate distal to the second substrate, and configured to detect an intensity of incident light and generate a first signal; an electrowetting microfluid medium layer between the first and second substrates, and including transparent and opaque fluid mediums immiscible with each other, wherein an aperture of the variable diaphragm is formed by the transparent fluid medium, and one of the transparent and opaque fluid mediums is conductive; and a driving electrode between the first and second substrates, and configured to receive a driving voltage corresponding to the first signal and for driving the electrowetting microfluid medium layer, so as to change an area of an orthographic projection of the opaque fluid medium fluid medium on the second substrate, thereby changing a diameter of the aperture.

The present invention relates to a lens curvature variation apparatus. The lens curvature variation apparatus according to an embodiment is a lens curvature variation apparatus for varying a curvature of a liquid lens which is variable based on an applied electrical signal. The lens curvature variation apparatus includes a lens driver to apply the electrical signal to the liquid lens, a sensor unit to sense the curvature of the liquid lens formed based on the electrical signal, and a controller to control the lens driver to form a target curvature of the liquid lens based on the sensed curvature, wherein the lens driver supplies the electrical signal to the liquid lens according to a switching operation of a switching element, and includes a detection element connected to one end of the switching element, wherein the sensor unit senses an electrical signal detected by the detection element. Thereby, the curvature of the lens can be sensed quickly and accurately.