A method of illuminating a specific object from the optimal direction. Compared to general lighting (uniform lighting), which provides uniform illuminance throughout the room, this method has the advantage of providing the desired illuminance from the desired direction, improving lighting effects. In addition, the high illumination rate reduces electricity costs. Points to keep in mind are that there will be a tendency to need many different types of lighting fixtures depending on the work being done in the room, the contrast between light and dark areas will tend to be strong, and documents will tend to shine and become difficult to read. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
特定の対象物を最適の方向から照明する方法。室内全体を均等の照度とする全般照明 (均一照明) に比べて,希望の方向から希望の照度が得られ,照明の効果をあげる利点がある。また照明率が高いので電力費が少くてすむ。留意点としては,室内の仕事に応じて照明器具の種類が多くなりがちになる,明部と暗部のコントラストが強くなりがちになる,書類が光って読みにくくなりがちになるなどである。
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