Abstract: Disclosed herein is a biodegradable and bioactive glass-ceramic fabricated by mixing a slowly biodegradable glass-ceramic and a highly biodegradable glass-ceramic in a predetermined mixing ratio wherein the bioactivity is maintained to be constant, and the biodegradation rate is controlled by the mixing ratio. The biodegradable and bioactive glass-ceramic is fabricated from a composition consisting of calcium oxide (CaO), silica (SiO2), boron oxide (B2O3), magnesium oxide (MgO), calcium fluoride (CaF2) and phosphorus pentoxide (P2O5).

Abstract: A light source unit and an image projection apparatus are provided. The light source unit includes: a light source part including a light source and a reflective member which reflects light emitted from the light source; and an infrared ray dividing part which is provided corresponding to a shape of the reflective member, is spaced apart from the reflective member, and includes a blocking part to block part of infrared rays generated from the light source and passing through the reflective member and a passing part having an opening formed through the blocking part. The image projection apparatus includes the light source unit and a casing accommodating the light source unit.

Abstract: A laser display apparatus which reduces speckles, includes: a laser illuminating system emitting a laser beam; and a speckle reducing unit including a birefringent device that separates the laser beam emitted from the laser illuminating system into a plurality of partial beams, and a plurality of spots formed by the partial beams, separated by the speckle reducing unit, on a screen overlap with each other with a slight displacement so that the speckle pattern is reduced.

Abstract: Disclosed herein are a self-foamed porous ceramic composition and a method for making a porous ceramic using the self-foamed porous ceramic composition. The self-foamed porous ceramic is obtained by fabricating a glass consisting of 41˜47 mole % of calcium oxide (CaO), 41˜47 mole % of silica (SiO2) and 6˜18 mole % of borate (B2O3), pulverizing the glass into a finely-divided glass powder having an average particle size of 1˜10 ?m, molding the glass powder, and sintering the molded glass powder.

Abstract: Disclosed herein are a self-foamed porous ceramic composition and a method for making a porous ceramic using the self-foamed porous ceramic composition. The self-foamed porous ceramic is obtained by fabricating a glass consisting of 41˜47 mole % of calcium oxide (CaO), 41˜47 mole % of silica (SiO2) and 6˜18 mole % of borate (B2O3), pulverizing the glass into a finely-divided glass powder having an average particle size of 1˜10 &mgr;m, molding the glass powder, and sintering the molded glass powder.

Abstract: Disclosed herein is a biodegradable and bioactive glass-ceramic fabricated by mixing a slowly biodegradable glass-ceramic and a highly biodegradable glass-ceramic in a predetermined mixing ratio wherein the bioactivity is maintained to be constant, and the biodegradation rate is controlled by the mixing ratio. The biodegradable and bioactive glass-ceramic is fabricated from a composition consisting of calcium oxide (CaO), silica (SiO2), boron oxide (B2O3), magnesium oxide (MgO), calcium fluoride (CaF2) and phosphorus pentoxide (P2O5).

Abstract: Disclosed is a device for aligning an optical source and an optical fiber in an optical source module. The optical source module has a substrate, an optical source mounted on the substrate, an optical fiber for receiving lights emitted by the optical source, an optical fiber ferrule for supporting the optical fiber, and a saddle mounted on the substrate for holding the optical fiber ferrule.

Abstract: Disclosed is a device for aligning an optical source and an optical fiber in an optical source module. The optical source module has a substrate, an optical source mounted on the substrate, an optical fiber for receiving lights emitted by the optical source, an optical fiber ferrule for supporting the optical fiber, and a saddle mounted on the substrate for holding the optical fiber ferrule.

Abstract: A multi-stage combined optical device having an improved structure which can detect incident light power using a single optical isolator.

Abstract: A high-speed optical modulator module which includes: a lead frame having an outer lead frame and an inner lead frame, the outer lead frame for receiving a high-speed signal; a substrate, in which a metal base having a matching impedance device, and a submount having a laser diode thereon, are formed; a first multi-bonding wire for electrically connecting the inner lead frame of the lead frame to one end of the matching impedance device; a second multi-bonding wire for electrically connecting the other end of the matching impedance device to one end of the metal base; and a dual-bonding wire for electrically connecting the other end of the metal base to the laser diode. The matching impedance device includes a matching resistor and a compensation capacitor connected in parallel. The module is formed by packaging and sealing the components other than the outer lead frame.