Patent application number | Description | Published |
20090097140 | VARIFOCAL OPTICAL DEVICE - A varifocal optical device is provided. The varifocal optical device includes an optical lens, an actuator unit connected with the optical lens and having two areas that are bending-deformed in opposite directions to each other when a voltage is applied thereto, and a supporting unit to support the actuator unit, so that a focus of the optical lens is varied by the bending deformation when the voltage is applied to the actuator unit. Thereby, a driving displacement of the varifocal optical lens can be maximized. | 04-16-2009 |
20090127439 | IMAGE SENSING APPARATUS WITH ARTIFICIAL OMMATIDIA AND MANUFACTURING METHOD FOR ARTIFICIAL OMMATIDIA UNIT - 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. | 05-21-2009 |
20090147371 | OPTICAL LENS AND MANUFACTURING METHOD THEREOF - 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. | 06-11-2009 |
20100046004 | PATTERN PROJECTING APPARATUS, THREE DIMENSIONAL IMAGING APPARATUS HAVING THE SAME, AND VARIFOCAL LIQUID LENS BEING USED IN THE SAME - 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. | 02-25-2010 |
20100110606 | TUNABLE CAPACITOR USING ELECTROWETTING PHENOMENON - A tunable capacitor using an electrowetting phenomenon includes a first electrode; a second electrode which is spaced apart from the first electrode and faces the first electrode; a fluidic channel which is disposed between the first electrode and the second electrode; a first insulating layer which is disposed between the first electrode and the fluidic channel; and a conductive fluid which is disposed in the fluidic channel and moves along the fluidic channel when a direct current (DC) potential difference occurs between the first and second electrodes. Accordingly, it is possible to fabricate the tunable capacitor with the simplified fabrication process, good reliability and durability, and no restriction on the tuning range. | 05-06-2010 |
20100128359 | VARIFOCAL LENS AND METHOD OF MANUFACTURING THE SAME - Provided is a varifocal lens and method of manufacturing the varifocal lens. The varifocal lens includes a transparent substrate, a spacer frame arranged to form an inner space on the transparent substrate, wherein the inner space is to be filled with an optical fluid, a rigid frame disposed to be adjacent to the spacer frame, and an optical membrane and an actuator which are formed on a surface of the rigid frame. The rigid frame supports the actuator and the optical membrane, wherein the actuator applies a pressure to an optical fluid and the optical membrane is modified according to a flow of the optical fluid. | 05-27-2010 |
20100165475 | VARIFOCAL LENS - 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. | 07-01-2010 |
20110051254 | LIQUID LENS - 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. | 03-03-2011 |
20110051255 | FLUIDIC LENS AND METHOD OF MANUFACTURING THE SAME - 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 elastmoer 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. | 03-03-2011 |
20110069216 | WAFER-LEVEL LENS MODULE WITH EXTENDED DEPTH OF FIELD AND IMAGING DEVICE INCLUDING THE WAFER-LEVEL LENS MODULE - A wafer-level lens module with an extended depth of field (EDF) and an imaging device including the wafer-level lens module are provided. The wafer-level EDF lens module includes a plurality of wafer-scale lenses stacked with fixed distances therebetween. The plurality of wafer-scale lenses includes an effective lens having a profile which satisfies a corrected optimized aspheric function, wherein a profile of a center region of the effective lens is optimized for an infinity-focused image and a profile of an edge region of the effective lens is optimized for a macro-focused image. | 03-24-2011 |
20120105971 | OPTICAL APPARATUS - An optical apparatus such as a varifocal fluidic lens is provided. Optical apparatus includes a spacer frame, optical fluid, an elastic membrane, an actuator, an actuator frame, and a thermally deformable frame. Spacer frame defines an internal space including a lens portion and a driving portion that connect to each other, and the driving portion is disposed to surround the lens portion disposed in the center area of the internal space. Optical fluid is filled in the internal space defined by the spacer frame. The elastic membrane is attached on a surface of the spacer frame, to cover a side of the internal space, and the thermally deformable plate is attached on the other surface of the spacer frame, to cover the other side of the internal space. The thermally deformable plate deforms to increase or decrease a volume of the internal space according to a change in temperature. | 05-03-2012 |
20120147478 | VARIFOCAL LENS STRUCTURE, METHOD OF MANUFACTURING THE VARIFOCAL LENS STRUCTURE, OPTICAL LENS MODULE INCLUDING THE VARIFOCAL LENS STRUCTURE, AND METHOD OF MANUFACTURING THE OPTICAL LENS MODULE - 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. | 06-14-2012 |
20120154924 | VARIFOCAL LENS STRUCTURE AND METHOD OF MANUFACTURING THE SAME - A varifocal lens structure and a method of manufacturing the same, the varifocal lens structure including: a frame having a fluid chamber filled with an optical fluid and formed of polymethylsiloxane (PDMS) containing a predetermined fluid; a transparent cover disposed on a top surface of the frame so as to cover the fluid chamber; a transparent elastic membrane disposed on a bottom surface of the frame so as to form a lower wall of the fluid chamber; and an actuator disposed on the elastic membrane. | 06-21-2012 |
20130105863 | ELECTRODE STRUCTURES, GALLIUM NITRIDE BASED SEMICONDUCTOR DEVICES INCLUDING THE SAME AND METHODS OF MANUFACTURING THE SAME | 05-02-2013 |
20130161587 | GRAPHENE DEVICES AND METHODS OF MANUFACTURING THE SAME - A graphene device may include a channel layer including graphene, a first electrode and second electrode on a first region and second region of the channel layer, respectively, and a capping layer covering the channel layer and the first and second electrodes. A region of the channel layer between the first and second electrodes is exposed by an opening in the capping layer. A gate insulating layer may be on the capping layer to cover the region of the channel layer, and a gate may be on the gate insulating layer. | 06-27-2013 |
20130252410 | SELECTIVE LOW-TEMPERATURE OHMIC CONTACT FORMATION METHOD FOR GROUP III-NITRIDE HETEROJUNCTION STRUCTURED DEVICE - A method for forming a selective ohmic contact for a Group III-nitride heterojunction structured device may include forming a conductive layer and a capping layer on an epitaxial substrate including at least one Group III-nitride heterojunction layer and having a defined ohmic contact region, the capping layer being formed on the conductive layer or between the conductive layer and the Group III-nitride heterojunction layer in one of the ohmic contact region and non-ohmic contact region, and applying at least one of a laser annealing process and an induction annealing process on the substrate at a temperature of less than or equal to about 750° C. to complete the selective ohmic contact in the ohmic contact region. | 09-26-2013 |
20140117349 | SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD OF SEMICONDUCTOR DEVICE USING METAL OXIDE - A method of manufacturing a semiconductor device using a metal oxide includes forming a metal oxide layer on a substrate, forming an amorphous semiconductor layer on the metal oxide layer, and forming a polycrystalline semiconductor layer by crystallizing the amorphous semiconductor layer using the metal oxide layer. | 05-01-2014 |
20140162053 | BONDED SUBSTRATE STRUCTURE USING SILOXANE-BASED MONOMER AND METHOD OF MANUFACTURING THE SAME - A bonded substrate structure includes a siloxane-based monomer layer between a first substrate and a second substrate, the siloxane-based monomer layer bonding the first substrate and the second substrate. The first substrate and the second substrate may be one of a silicon substrate and a silicon oxide substrate, respectively. | 06-12-2014 |
20140174640 | METHODS OF TRANSFERRING GRAPHENE AND MANUFACTURING DEVICE USING THE SAME - A method of transferring graphene includes forming a sacrificial layer and a graphene layer sequentially on a first substrate, bonding the graphene layer to a target layer, and removing the sacrificial layer using a laser and separating the first substrate from the graphene layer. | 06-26-2014 |