Abstract: Provided are a polymer and a polymer actuator including the polymer. The polymer is cross-linked by a cross-linking agent. When the polymer is used in the polymer actuator, the polymer actuator shows a high strain and may be stably operated at high temperatures.

Abstract: A variable-focus liquid lens is provided. The liquid lens includes a membrane and a fluid. The membrane is made of a transparent elastomer, and the fluid fills a predetermined space to contact at least a lens surface of the membrane. The membrane and the fluid are respectively made of materials repulsive to each other, for example, hydrophilic and hydrophobic materials or oleophilic and oleophobic materials. Accordingly, a repulsive force between the fluid and the membrane can prevent the absorption or leaking of the fluid into/through the membrane.

Abstract: An LED package includes a substrate having an electrically conductive portion and an electrically non-conductive portion composed of an oxide of the conductive portion; an LED mounted on the conductive portion and electrically connected to the conductive portion; a first electrode disposed on the non-conductive portion and electrically connected to the LED by a wire; and a second electrode disposed on the substrate and electrically connected to the LED.

Abstract: A multilayered electroactive polymer (EAP) device and a method of manufacturing the same is provided. The multilayered EAP device includes a plurality of unit layers. Each unit layer includes an EAP layer formed of an electroactive polymer (EAP), a protecting layer configured to prevent a material from penetrating into the EAP layer, and an active electrode formed using a conductive material. The protecting layer may be formed below the active layer or above the active layer. The active electrode may be interposed between two protecting layers.

Abstract: Provided are a polymer and a polymer actuator including the polymer. The polymer is cross-linked by a cross-linking agent. When the polymer is used in the polymer actuator, the polymer actuator shows a high strain and may be stably operated at high temperatures.

Abstract: A solid electrolyte polymer including a cross-linked polyvinylidene fluoride (PVDF)-based polymer, and a polymer actuator including the cross-linked PVDF-based polymer and an electrolytic material.

Abstract: A fluidic lens and method for manufacturing the same are provided. The fluidic lens includes a transparent optical fluid and a double elastomer membrane. An outer membrane of the double elastomer membrane that is externally exposed includes a Poly DiMethyl Siloxane (PDMS) elastomer, and an inner membrane of the double elastomer membrane that makes contact with the optical fluid is transparent and includes an elastomer which has a low coherence with respect to the optical fluid.

Abstract: An optical probe and an optical system therefor are provided. The optical probe is includes a housing configured to house the optical system and the housing has a transparent window therein. the optical system includes a light emitting unit, a collimation lens, and a focusing lens. A numerical aperture of the optical system is adjustable by adjusting a pupil diameter of the collimation lens and a focal length of the focusing lens. The pupil diameter of the collimation lens is adjustable based on a variable focal lens or by adjusting a distance between the collimation lens and the light emitting unit.

Abstract: A multilayer electroactive polymer actuator and a method of manufacturing the same. The multilayer electroactive polymer actuator is divided into an actuating area and a non-actuating area. A plurality of driving electrodes, each formed on a side of the respective polymer layer to correspond to the actuating area. A plurality of extension electrodes connected to the driving electrodes and a common electrode for vertically connecting the extension electrodes are formed to correspond to the non-actuating area. A via hole is formed through the plurality of non-actuating layers and has a diameter which increases in a stepwise manner upwards. The common electrode is formed in the via hole. The driving electrode includes an alloy of aluminum and copper. The extension electrode is formed of material having a small reactivity with respect to laser as compared to the reactivity of the polymer layer.

Abstract: An LED package and a fabrication method thereof are provided. The LED package includes an upper metal plate having an LED-receiving hole therein; a lower metal plate disposed under the upper metal plate; and an insulator which the upper metal plate and the lower metal plate from each other. A portion of the lower metal plate is exposed via the LED-receiving hole and an LED is mounted on the exposed portion of the lower metal plate and is electrically connected to both of the upper and lower metal plates. A protective cover encloses and protects exposed surfaces of the upper and lower metal plates.

Abstract: A pattern projecting apparatus usable with a three-dimensional imaging apparatus includes a light generator which emits a light beam, and a pattern adjusting unit disposed in front of the light generator. The pattern adjusting unit forms a projection pattern on an object, and adjusts a focus of the light beam emitted from the light generator.

Abstract: Varifocal lens for camera module incorporated in wireless mobile communication device is provided. The varifocal lens includes: a membrane; a frame which is fixed to the membrane and has a receiving hole formed in the middle; a transparent substrate which is fixed to the frame to seal optical fluid received in the receiving hole; one or more actuators to change a curvature of a fluid lens part by bending the circumference of the fluid lens part formed around a central portion of the receiving hole; and a restriction lessening member which is adapted to lessen a restrictive force of an edge of the fluid lens part, is made of a transparent material, has with an area smaller than the fluid lens part to correspond to an inner side of the fluid lens part except the edge of the fluid lens part, and has a larger Young's modulus than the membrane.

Abstract: A method of manufacturing a polymer electrode and a polymer actuator employing the polymer electrode, the method including: adhering a shadow mask onto a substrate, forming a hydrophilic electrode pattern on the substrate, coating the hydrophilic electrode pattern of the substrate with a conductive polymer water solution, removing the shadow mask, and drying the conductive polymer water solution, thus forming the polymer electrode. The method may be applied to electrodes disposed on both surfaces of a polymer deformation layer of a polymer actuator.

Abstract: A varifocal lens structure, a method of manufacturing the varifocal lens structure, an optical lens module, and a method of manufacturing the optical lens module. The varifocal lens structure includes a liquid lens unit including a silicone membrane that includes a first silicone elastomer, a polymer actuator disposed on an upper surface of the silicone membrane, and an adhesive silicone layer that is disposed between the silicone membrane and the polymer actuator and includes a second silicone elastomer.

Abstract: A multilayered electroactive polymer (EAP) device and a method of manufacturing the same is provided. The multilayered EAP device includes a plurality of unit layers. Each unit layer includes an EAP layer formed of an electroactive polymer (EAP), a protecting layer configured to prevent a material from penetrating into the EAP layer, and an active electrode formed using a conductive material. The protecting layer may be formed below the active layer or above the active layer. The active electrode may be interposed between two protecting layers.

Abstract: An optical probe and an optical system therefor are provided. The optical probe is includes a housing configured to house the optical system and the housing has a transparent window therein. the optical system includes a light emitting unit, a collimation lens, and a focusing lens. A numerical aperture of the optical system is adjustable by adjusting a pupil diameter of the collimation lens and a focal length of the focusing lens. The pupil diameter of the collimation lens is adjustable based on a variable focal lens or by adjusting a distance between the collimation lens and the light emitting unit.

Abstract: An image sensing apparatus with artificial ommatidia includes an imaging optical lens group forming a concave focal surface, an artificial ommatidia unit having a curved top surface corresponding to the concave focal surface and a flat bottom surface, and an image sensor disposed under the artificial ommatidia unit. The artificial ommatidia unit is disposed under the imaging optical lens group so that the curved top surface is coincided with the concave focal surface of the imaging optical lens group. The artificial ommatidia unit having a plurality of artificial ommatidia collects light emitting from the imaging optical lens group, and guides the light to the bottom surface thereof.

Abstract: A touch panel is provided. The touch panel includes an electroactive polymer (EAP) actuator which is deformable when protruded or depressed locally at a part to which a driving voltage is applied; and a flexible touch sensor which is disposed on the EAP actuator. The flexible touch sensor is deformable locally in correspondence with a deformation of the EAP actuator, and senses an input according to a contact or pressing operation.

Abstract: A vari-focal fluidic lens is provided. The fluidic lens includes a frame, an first membrane, a second membrane, and an optical fluid. The frame defines an inner space of the fluidic lens including a driving portion and a lens portion that are connected to each other. The elastic membrane is attached to one side of the frame to cover at least the lens portion. The second membrane is attached to an opposite side of the frame to cover at least the driving portion and is deformable in response to temperature change to vary a volume of the inner space. Optical fluid is contained in the inner space.

Abstract: A liquid optical lens which changes a focus due to a change in a shape of a translucent elastic membrane according to a change in a fluid pressure of a lens chamber and a manufacturing method thereof are provided. The liquid optical lens forms a dampproof coating membrane on the translucent elastic membrane to prevent a fluid from permeating through the translucent elastic membrane and a swelling phenomenon of the translucent elastic membrane.