Abstract: Disclosed are a method for producing carbon quantum dots having color change based on a cumulative amount of exposure thereof to UV light, and to a color change sensor including the same that indicates a cumulative UV amount. The method for producing the carbon quantum dots include performing solvothermal reaction on blue inkjet printer dye, urea and an organic solvent in a high pressure reactor.

Abstract: The present invention relates to a method for synthesizing carbon quantum dots capable of effectively blocking UV light and blue light from application devices composed of white LEDs, and a method for manufacturing a UV light- and blue light-blocking film, and the method for manufacturing a UV light- and blue light-blocking film, of the present invention, comprises the steps of: hydrothermally synthesizing a liquid hydrocarbon aqueous solution in a high-pressure reactor; dispersing the synthesized product in a polymer aqueous solution; and applying a dispersion solution, and then drying same.

Abstract: The present disclosure provides a method for producing a heat-dissipating ceramic foam containing carbonized cellulose particles, the method including: mixing particles of carbonized cellulose or carbonized cellulose-containing substance, ceramic powders, silicate, and water to form slurry; adding a foaming agent to the slurry to form foamed slurry; and drying the foamed slurry.

Abstract: A lighthouse lantern comprising a power supply and a phosphor-containing emitter is disclosed. The lighthouse lantern includes a power supply; a laser diode configured for receiving power from the power supply and irradiating laser in one direction; a phosphor-containing emitter positioned on a traveling line of the laser, wherein the emitter is configured for receiving the laser and emitting light; and a pair of reflective structures disposed symmetrically with respect to the phosphor-containing emitter, wherein each reflective structure has a reflective surface inclined in a direction away from the phosphor-containing emitter, wherein the reflective surfaces of the reflective structures are symmetrical with each other with respect to the phosphor-containing emitter. In accordance with the present disclosure, the lighthouse lantern may generate high output with low input power and thus has improved power efficiency, may suppress frequent failures near sea or seawater, and may reduce production costs.

Abstract: The present disclosure provides a wavelength conversion glass, a method for manufacturing the wavelength conversion glass, and a light emitting device including the wavelength conversion glass. The wavelength conversion glass includes a TeO2—B2O3—ZnO—BaO-based transparent glass containing tellurium dioxide (TeO2), boric oxide (B2O3), zinc oxide (ZnO), and barium oxide (BaO); and phosphor micro-particles dispersed in the transparent glass.

Abstract: The present disclosure provides a wavelength conversion glass, a method for manufacturing the wavelength conversion glass, and a light emitting device including the wavelength conversion glass. The wavelength conversion glass includes a TeO2—B2O3—ZnO—BaO-based transparent glass containing tellurium dioxide (TeO2), boric oxide (B2O3), zinc oxide (ZnO), and barium oxide (BaO); and phosphor micro-particles dispersed in the transparent glass.

Abstract: A lighthouse lantern comprising a power supply and a phosphor-containing emitter is disclosed. The lighthouse lantern includes a power supply; a laser diode configured for receiving power from the power supply and irradiating laser in one direction; a phosphor-containing emitter positioned on a traveling line of the laser, wherein the emitter is configured for receiving the laser and emitting light; and a pair of reflective structures disposed symmetrically with respect to the phosphor-containing emitter, wherein each reflective structure has a reflective surface inclined in a direction away from the phosphor-containing emitter, wherein the reflective surfaces of the reflective structures are symmetrical with each other with respect to the phosphor-containing emitter. In accordance with the present disclosure, the lighthouse lantern may generate high output with low input power and thus has improved power efficiency, may suppress frequent failures near sea or seawater, and may reduce production costs.

Abstract: The present disclosure provides a method for producing a heat-dissipating ceramic foam containing carbonized cellulose particles, the method including: mixing particles of carbonized cellulose or carbonized cellulose-containing substance, ceramic powders, silicate, and water to form slurry; adding a foaming agent to the slurry to form foamed slurry; and drying the foamed slurry.