摘要:
Disclosed is a laser diode having a PCB type lead frame. In the laser diode, a luminous element functions to emit a laser beam. A frame unit has an upper section mounted with the luminous element and functions to radiate heat generated during creation of the laser beam. A housing has an internal space for receiving the frame unit and an exit hole communicating with the internal space for allowing the laser beam to pass through the same. A Printed Circuit Board (PCB) has a plurality of pattern electrodes formed on an upper face of the PCB, the pattern electrodes being electrically connected with the luminous element. The semiconductor laser diode of the invention has a simple structure to facilitate an assembling process, improve productivity, save manufacturing cost and increase radiating surface area thereby improving heat radiation characteristics. The invention can further prevent a finger of a worker from direct contact with a luminous element when a worker handles components in an assembly line so that precision components are not polluted or damaged.
摘要:
An apparatus and method for searching for a protein active site by using a bottom-hat transformation are provided. First, an image of protein surface is generated and then a volumetric image is generated by sampling the protein surface in units of a predetermined length. Thereafter a morphology process is performed on the volumetric image, thereby extracting the protein active site from the morphology-processed volumetric image. Accordingly, it is possible to rapidly search for a protein active site in a 3D structural space.
摘要:
Provided is a system for and method of extracting and clustering information. The system includes a clustering criterion designing unit that reconstructs a plurality of clustering criteria for each layer or applies weights to the plurality of clustering criteria in order to design a new clustering criterion, an input data processing unit that extracts characteristics from input data according to the new clustering criterion, and a clustering unit that performs clustering on the extracted characteristics.
摘要:
Provided are an apparatus and method of searching a protein active site. The apparatus includes a database which stores information on a plurality of reference active sites, a comparing unit which calculates 3D structural similarities according to the number of overlapping residues, with respect to an input active site and the stored reference active site, and a search unit which searches the reference active site with respect to the input active site according to the similarities. Accordingly, similar active sites can be searched with a low computational complexity, thereby be used for a correct new drug design.
摘要:
A color reproduction correcting system and method, and a video display device and method can reproduce original color by considering signal source and display device. Each signal source information and each display device information can be stored. The signal source and the display device, which are currently used (e.g., corrected), can be determined, for example, by a user selection. In one embodiment, the signal provided from a transmission side can be inverse gamma-corrected based on a corresponding signal source, and a colorimetric error of the inverse gamma-corrected signal is preferably corrected using corresponding signal source information and display device information. The corrected colorimetric error signal can be gamma-corrected based on a corresponding display device and then can be displayed on the corresponding display device.
摘要:
Provided is a micro-column electron beam apparatus including: a base; an electron lens bracket on which an electron lens modulate can be fixed, mounted in a central portion of the base; an electron beam source tip module vertically disposed on the electron lens module; a pan spring plate stage module that is mounted over the base, supports the electron beam source tip module at a central portion thereof, and includes a three-coupling pan spring plate portion including first through third spring units that are coupled to the electron beam source tip module in three directions on a plane perpendicular to the vertical axis, which vertically passes the center of the electron beam source tip module, to elastically support the electron beam source tip module in three directions; a first piezoelectric actuator coupled to the pan spring plate stage module to move the electron beam source tip module along a first axis perpendicular to the vertical axis; and a second piezoelectric actuator coupled to the pan spring plate stage module to move the electron beam source tip module along a second axis perpendicular to the vertical axis and the first axis.
摘要:
A micro column electron beam apparatus having a reduced number of interconnections is provided. The micro column electron beam apparatus includes: a low temperature co-fired ceramic (LTCC) substrate; a plurality of deflector electrodes attached to a predetermined top portion of the LTCC substrate; a pad electrode placed at a top edge of the LTCC substrate and transmitting an external signal to the deflector electrodes; and a connection unit placed in the LTCC substrate and electrically connecting the deflector electrode and the pad electrode.
摘要:
Provided is a micro stage comprising: a body having a vertically perforated through-hole passing through a central portion thereof; a bobbin including a tip portion with an electron emission tip embedded in the center thereof, and passing through the through-hole of the body to be moved in the through-hole along a first axis perpendicular to a vertical direction; a first piezoelectric element disposed on the body and lengthened when a voltage is applied thereto to push the bobbin in one direction along the first axis; a second piezoelectric element disposed on the body and lengthened when a voltage is applied thereto to push the bobbin in the other direction along the first axis; and an upper cover that is coupled to an upper portion of the body and has a through-hole, through which the bobbin passes and communicates with the through-hole of the body, wherein the bobbin can be positioned as desired along the first axis by adjusting the voltages applied to the first piezoelectric element and the second piezoelectric element. Accordingly, the emission tip can be exactly and stably positioned using only the movable piezoelectric elements.
摘要:
Provided is a wafer-scale microcolumn array using a low temperature co-fired ceramic (LTCC) substrate. The microcolumn array includes a LTCC substrate having wirings and wafer-scale beam deflector arrays, which are attached to at least one side of the LTCC substrate and has an array of deflection devices deflecting electron beams. The wafer-scale microcolumn array using the LTCC substrate makes it possible to significantly increase the throughput of semiconductor wafers, simplify its manufacturing process, and lower its production cost.
摘要:
A tripod type constant velocity joint comprises a housing having three track grooves which are defined at trisected positions of the housing along a circumferential direction and extend in a radial direction; a spider having three polyhedral trunnions which are projectedly formed at trisected positions of the spider along the circumferential direction to be respectively inserted into the track grooves and each of which has at least two polygonal surfaces; inner rollers a circumferential inner surface of each of which has a curved contour for surrounding the polyhedral trunnion; a plurality of needle rollers assembled to a circumferential outer surface of each inner roller; and outer rollers each formed to be rotated through the needle rollers, to be moved in an axial direction of the inner roller, and to be moved in an axial direction of the track groove along a guide surface of the housing.