Abstract: The present invention relates to a silicone-based coating composition with middle and high refractive index, a method of preparing the same, and an optical lens prepared therefrom, and more specifically to a silicone-based coating composition including organosilanes, inorganic oxides having a refractive index of from 1.7 to 3.0, an aluminum acetyl acetone, a C1-C5 alkyl cellosolve, and a solvent, a method of preparing the same, and an optical lens prepared therefrom. The siloxane-based coating composition is transparent, not sticky, and stable for long time storage. Therefore, the coating composition can be applied to a coating layer on a surface of a plastic lens such as an optical lens, an industrial safety lens, or goggles for leisure.

Abstract: The present invention relates to a silicone-based coating composition improved adhesion and dyeability, and more specifically, to a silicone-based coating composition prepared by adding a compound(s) having at least one functional group selected from the group consisting of amino, carboxylic acid, mercapto, methylol, anhydride, and isocyanate into an organic-inorganic sol prepared by a sol-gel reaction of organosilanes at high temperature, a method of preparing the same, and an optical lens prepared therefrom. The dyeability of the coating composition is improved by conducting sol-gel reaction at high temperature, and the adhesion to the substrate is improved by adding the compound capable of hydrogen bond and condensation reaction. Therefore, the coating layer of the present invention is proper to be applied to a coating layer for a plastic lens such as glasses, an industrial glass, or goggles for leisure because of good dyeability and adhesion to substrate.

Abstract: The present invention relates to a method of preparing a photochromic film or plate comprising printing a photochromic substance in the unit of an independent spot on a part or the whole of a basic material and forming a protective layer on the basic material, on which the photochromic substance is coated, so as to protect the photochromic substance. According to the present invention, the photochromic substance is printed in the unit of an independent spot so that the printed unit spots are isolated from each other, thereby prolonging the life of the photochromic substance.

Abstract: The present invention relates to a slide type portable terminal and methods for the same. Embodiments of a slide type portable terminal can include a main unit having key sections that are formed on a surface of the main unit, a slide unit that can slide relative to the surface of the main unit to cause each of the plurality of the key sections of the main unit to be covered and exposed and a slide driving mechanism for causing the slide unit to slide, for example, using restorative forces. The slide mechanism can include coil springs guided by guide bars. The guide bars can have both ends rotatably coupled to the main and slide units, respectively, such that the lengths of portions of the guide bars can change as the slide unit is moved.

Abstract: The present invention relates to a slide type portable terminal and methods for the same. Embodiments of a slide type portable terminal can include a main unit having key sections that are formed on a surface of the main unit, a slide unit that can slide relative to the surface of the main unit to cause each of the plurality of the key sections of the main unit to be covered and exposed and a slide driving mechanism for causing the slide unit to slide, for example, using restorative forces. The slide mechanism can include coil springs guided by guide bars. The guide bars can have both ends rotatably coupled to the main and slide units, respectively, such that the lengths of portions of the guide bars can change as the slide unit is moved.

Abstract: A swivel hinge can have a first hinge section and a second hinge section coupled to the first hinge section to rotate in a direction perpendicular to the first hinge section. The first and second hinge sections can include first and second magnets configured to relatively position the first and second hinge sections with respect to each other. The swivel can include a stopper engagement section provided at one end of a second hinge shaft to rotate together with the second hinge shaft and a stopper having a surface facing a locking surface of the stopper engagement section to restrict rotation of the second hinge section. The stopper can allow the locking surface of the stopper engagement section to freely rotate when the first hinge section rotates by a predetermined angle. The swivel hinge can operate in a portable terminal.

Abstract: A slide type portable terminal can include a main unit including separated first and second key sections and a first plate coupled to a surface of the main unit and a display unit with a display screen on a front surface and a second plate. The second plate can slide with respect to the first plate and preferably slides along the surface of the main unit to cause the first and second key sections of the main unit to be covered and exposed by the display unit. Further, first and second magnets can be provided on the first and second plates, respectively, so that the same poles of the magnets face each other to provide a repulsive force when they are positioned to face close to each other. According to embodiments of the present invention, there are various advantages in that the portable terminal can be utilized more conveniently and production costs and failure rates thereof can also be reduced.

Abstract: A wireless terminal including a custom integrated circuit for adjusting and applying the voltage of a particular pulse and a power supply for supplying power to operate an internal vibration embodying circuit, the terminal includes: a switching circuit unit for controlling the motor action in the vibration embodying circuit: a current amplification unit for supplying a great current necessary for the driving of the motor; a driving motor unit for performing vibration by driving the vibration embodying circuit; an overcurrent protecting unit for maintaining a stable voltage in the motor when overvoltage is applied to an input and protecting the motor by interrupting said driving motor unit; and a battery pack, connected externally to the power supply, for supplying charges to the power supply unit by mounting the vibration embodying circuit therein.

Abstract: A method for fabricating a preform for a plastic optical fiber, having continuous refractive index profile in a radial direction, comprising a firs step of introducing a mixture consisting of at least two substances, each having a different density and refractive index relative to each other, to a cylindrical reactor and polymerizing the mixture in a centrifugal field generated by rotating the reactor; a second step of compensating for a void formed by volume shrinkage from the polymerization in the first step with a mixture consisting of at least two substances, each having a different density and refractive index relative to each other, and polymerizing the mixture in a centrifugal field generated by rotating the reactor, and a third step of repeating the second step until there is no void after polymerization

Abstract: A method for fabricating a preform for a plastic optical fiber, having continuous refractive index profile in a radial direction, comprising a firs step of introducing a mixture consisting of at least two substances, each having a different density and refractive index relative to each other, to a cylindrical reactor and polymerizing the mixture in a centrifugal field generated by rotating the reactor; a second step of compensating for a void formed by volume shrinkage from the polymerization in the first step with a mixture consisting of at least two substances, each having a different density and refractive index relative to each other, and polymerizing the mixture in a centrifugal field generated by rotating the reactor, and a third step of repeating the second step until there is no void after polymerization