Abstract: A method comprises: charging a rare-earth magnet-forming material comprising magnet material particles into a mold, in a state in which an easy magnetization axis of each of the magnet material particles is oriented in one plane; sintering the rare-earth magnet-forming material charged in the mold by heating the rare-earth magnet-forming material to a sintering temperature while applying a given magnitude of pressing force to the rare-earth magnet-forming material, to thereby form a sintered body in which the magnet material particles are integrally sintered; and then subjecting the sintered body to high-temperature heat treatment, under a pressure lower than the pressing force during the sintering and under a maximum achieving temperature which ranges from greater than 900° C. to 1100° C., and whose difference from a maximum achieving temperature during the pressure sintering is within 250° C.

Abstract: An illumination device is provided for controlling a color temperature of light irradiated from a light source having a plurality of light-emitting elements of different light colors. A control setting module provides a control signal associated with a desired color temperature for the irradiated light. A light quantity determination circuit determines light quantities for each of the light-emitting elements based on a relationship between the control signal from the control setting module and an inverse color temperature. A plurality of driver circuits provide driver signals to the light-emitting elements corresponding to the determined light quantities. In this manner the color temperature for light irradiated from the light source coincides with the desired color temperature.

Abstract: An illumination device is provided for controlling a color temperature of light irradiated from a light source having a plurality of light-emitting elements of different light colors. A control setting module provides a control signal associated with a desired color temperature for the irradiated light. A light quantity determination circuit determines light quantities for each of the light-emitting elements based on a relationship between the control signal from the control setting module and an inverse color temperature. A plurality of driver circuits provide driver signals to the light-emitting elements corresponding to the determined light quantities. In this manner the color temperature for light irradiated from the light source coincides with the desired color temperature.