| 摘要 |
A lighting device, a method and a light wavelength conversion wheel assembly (4) for color tuning thereof. The lighting device includes a light source. The light source includes an excitation light source (1) and a movement unit. The movement unit includes a light wavelength conversion wheel assembly (4) having a heat dissipation base (40). The heat dissipation base (40) is divided into a number of areas (41) carrying different excited materials (46), and is controlled to rotate intermittently or rotate to a predetermined angle around a wheel shaft serving as a center. The heat dissipation base (40) faces the exciting light and is illuminated locally, and the illumination area is not larger than any of the areas (41) carrying the excited materials (46). A control unit controls the rotation so that a predetermined area is rotated into the illumination area of the exciting light. Output light of a predetermined color is provided by the excitation light source (1) and the predetermined area or the excited material (46) located in the predetermined area. A pattern having high brightness or high saturation as well as a higher combined efficiency of white light is provided, and the cost is low.
|
