| Patent application number | Description | Published |
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| 20090278041 | Method and apparatus for qualitatively analyzing high-molecular additives in metal plating solution - Disclosed herein is a method of qualitatively analyzing high-molecular additives in a metal plating solution, including: removing sulfate ions and metal ions from a metal plating solution; and qualitatively analyzing the metal plating solution, from which sulfate ions and metal ions are removed, using Matrix-Assisted Laser Desorption/Ionization Time-Of-Flight Mass Spectroscopy (MALDI-TOF MS). The method is advantageous in that the structure and molecular weight of high-molecular additives present in very small amounts in a plating solution can be accurately measured while maintaining the specific structure and molecular weight thereof without degrading the high-molecular additives. | 11-12-2009 |
| 20110057278 | X-RAY DETECTOR USING LIQUID CRYSTAL DEVICE - An X-ray detector includes a first substrate having a bottom surface on which a first electrode is formed. A second substrate has a top surface on which a second electrode and a polyimide layer are sequentially formed. A photoconductive layer is formed on a bottom surface of the first electrode and generates electron-hole pairs. A reflective layer is formed on a bottom surface of the photoconductive layer. A liquid crystal polymer layer is formed on a bottom surface of the reflective layer, and peaks and valleys are alternately formed on a bottom surface of the liquid crystal polymer layer. A liquid crystal layer is formed between the liquid crystal polymer layer and the polyimide layer, and liquid crystal molecules are aligned in a direction in which the peaks and valleys on the bottom surface are arranged. | 03-10-2011 |
| 20110057775 | BIOMETRIC AUTHENTICATION DEVICE - Disclosed herein is a biometric authentication device. The biometric authentication device includes a main body for forming a hand grip surface and constituting an entire framework of the biometric authentication device. At least one light source is disposed on one side of the main body and configured to radiate light. A reflection unit is included in the main body and attached to a side opposite that of the light source, the reflection unit allowing the radiated light to be incident on a hand and re-reflecting light that is incident on and reflected from the hand. An imaging device is disposed on the side of the main body, which is identical to the side on which the light source is disposed, and is configured to acquire biometric information of the hand by forming images of re-reflected light. An authentication/verification unit performs personal authentication using the biometric information. | 03-10-2011 |
| 20110063077 | VEIN AUTHENTICATION APPARATUS USING TOTAL INTERNAL REFLECTION - Disclosed herein is a vein authentication apparatus. The vein authentication apparatus includes a protective panel provided with a finger-resting surface, a light entry hole and a light exit hole and configured to totally reflect light, a light source located adjacent to the light entry hole of the protective panel and configured to emit the near infrared rays, an imaging element located adjacent to the light exit hole of the protective panel and configured to acquire a vein pattern, a light entry-side diffraction element located in the light entry hole of the protective panel and configured to guide the light toward the fingertip, a light exit-side diffraction element located in the light exit hole of the protective panel and configured to guide the light toward the imaging element, and an authentication unit configured to perform vein authentication using the vein pattern. | 03-17-2011 |
| 20110063430 | BIOMETRIC AUTHENTICATION DEVICE - Disclosed herein is a biometric authentication device. The biometric authentication device according to the present invention is configured such that it blocks visible light using an authentication button, the inside of which is opened or closed by a finger so as to realize the small size and slim shape of a biometric authentication device, and blocks infrared light or allows infrared light to pass while a driving unit moves vertically or horizontally by the operation of the authentication button. Accordingly, in the biometric authentication device, a camera module captures a normal image in normal mode, and captures an infrared pattern reflected from a finger in a vein authentication mode to perform biometric authentication. | 03-17-2011 |
| Patent application number | Description | Published |
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| 20080245108 | METHOD OF MANUFACTURING OPTICAL WAVEGUIDE USING OPTICAL SOLITON - There is provided a method of manufacturing an optical waveguide, the method including: allowing a beam to be incident in an optical waveguide direction of an optical waveguide material; generating an optical solution in the optical waveguide material by adjusting intensity of the incident beam according to the optical waveguide material; allowing the incident beam to be re-incident at an intensity higher than an intensity of the incident beam after checking generation of the optical solution in the optical waveguide material; and increasing a refractive index of an optical solution-generating area of the optical waveguide material by the re-incident beam to thereby form an optical waveguide. | 10-09-2008 |
| 20080259973 | Wavelength converted laser apparatus - a wavelength converted laser apparatus includes a laser oscillator emitting an excitation laser beam having a first wavelength, a harmonic wave generator converting the excitation laser beam into a beam having a second wavelength lower than the first wavelength and an optical parametric oscillator converting and outputting the beam having the second wavelength into a beam having a continuously selectable specific wavelength. The optical parametric oscillator has an OPO crystal, a SHG crystal disposed at an output terminal of the optical parametric oscillator crystal to generate a second harmonic beam and a pair of high reflectivity mirrors for amplifying the beam outputted from the optical parametric oscillator. | 10-23-2008 |
| 20090016400 | MULTI-BEAM LASER APPARATUS - There is provided a multi-beam laser apparatus including: a laser beam source generating a beam; an incident lens disposed on a path of the beam; a beam splitter splitting the beam incident on the incident lens into a plurality of beamlets; and a beam path adjustor disposed on each of paths of the split beamlets to change the respective paths of the split beamlets. The multi-beam laser apparatus easily produces a plurality of beamlets and adjusts paths of the beamlets obtained by a prism to improve machinability quality and uniformity. | 01-15-2009 |
| 20090091737 | LASER MEASURING DEVICE - A laser measuring device for precisely measuring a short distance is obtained by adding a relatively simple structure to a TOF laser measuring device that is simple and easily handled. The laser measuring device includes a light emitter, a light receiver and an optical length extender, which increases an optical path of emitted light or incident light. | 04-09-2009 |
