| Patent application number | Description | Published |
|---|
| 20080198707 | OPTICAL PICK-UP AND DISC APPARATUS HAVING THE SAME - An optical pick-up and a disc apparatus having the same to overcome an inferiority of a tracking signal caused by an adjacent layer during the recording and/or reproducing of an optical disc with multiple recording layers, the optical pick-up including: a light source to emit light with a wavelength corresponding to a type of the optical disc; a light collecting unit to focus the light emitted from the light source to form a light spot on a signal recording layer of an optical disc having a plurality of recording layers; a photodetector to receive a signal light reflected by the signal recording layer and a noise light reflected by an adjacent recording layer different from the signal recording layer, and to detect a signal from the signal light; and an optical member to change an optical transmission of the noise light according to an incident angle of the noise light so as to decrease an intensity of the noise light entering the photodetector. | 08-21-2008 |
| 20080198708 | OPTICAL PICK-UP AND DISC APPARATUS HAVING THE SAME - An optical pick-up and a disc apparatus having the same. The inferiority of a tracking signal caused by an adjacent layer during the recording and/or reproducing of an optical disc with multiple recording layers is effectively prevented. The optical pickup includes a light source to emit light with a predetermined wavelength, a light collecting unit to collect the light emitted from the light source to form a light spot on a signal recording layer of an optical disc having a plurality of recording layers, a photodetector to receive the light reflected by the optical disc to detect a signal, and an optical member to change the optical transmission of the light reflected by the optical disc according to an incident angle of the reflected light to decrease an optical transmission of a noise light entering the photodetector. | 08-21-2008 |
| 20080285427 | OPTICAL PICK-UP AND DISC APPARATUS HAVING THE SAME - An optical pick-up and a disc apparatus having the same to overcome an inferiority of a tracking signal caused by an adjacent layer during the recording and/or reproducing of data an optical disc with multiple recording layers are provided, the optical pick-up including: a light source to emit a light with a predetermined wavelength corresponding to a type of the optical disc; a light collecting unit to focus the emitted light to form a light spot on a signal recording layer of the optical disc, wherein the signal recording layer reflects the light as a signal light and an adjacent layer of the optical disc reflects the light as a noise light; a photodetector to detect a signal by receiving the signal light; and an optical member to intercept the noise light in order to decrease an intensity of the noise light entering the photodetector. | 11-20-2008 |
| 20100165821 | ASPHERIC LENS AND OPTICAL PICKUP INCLUDING THE SAME - An aspheric lens includes at least one aspheric lens surface, and an angle of inclination on the aspheric lens surface is smaller than or equal to 65°. The aspheric lens surface is given by the equation | 07-01-2010 |
| 20110014094 | DISK TYPE MICROFLUIDIC DEVICE AND BLOOD TESTING APPARATUS USING THE SAME - Disclosed herein are a disk type microfluidic device including a data area arranged thereon, and a blood testing apparatus having an information reading device for reading the data area of the disk type microfluidic device. The disk type microfluidic device includes a disk type body having a predetermined thickness, a plurality of chambers provided in the body to store a buffer or reaction solution, at least one channel to connect the plurality of chambers to one another, and a data area provided at a cylindrical portion of the body. | 01-20-2011 |
| 20110063968 | OPTICAL PICKUP APPARATUS HAVING MULTI-SECTIONAL POLARIZER - An optical pickup apparatus includes a light generating unit to generate a light to record or reproduce information, an objective lens to focus the light generated from the light generating unit onto a disk, and a multi-sectional polarizer disposed on a light path between the light generating unit and the objective lens and divided into a plurality of sectors having their individual optical axes. | 03-17-2011 |
