首页>
外国专利>
PROJECTION-TYPE IMAGE DISPLAY APPARATUS, LIGHTING APPARATUS AND LIGHTING METHOD REALIZING AN EXTENDED LIFETIME
PROJECTION-TYPE IMAGE DISPLAY APPARATUS, LIGHTING APPARATUS AND LIGHTING METHOD REALIZING AN EXTENDED LIFETIME
展开▼
机译:投影型图像显示装置,照明装置和实现延长使用寿命的照明方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A projection-type image display apparatus includes a high pressure discharge lamp, which utilizes the halogen cycle, and a lamp lighting apparatus that controls lighting of the high pressure discharge lamp. The lamp lighting apparatus performs lamp refresh processing to improve a lamp property. The lamp refresh processing involves performing low power lighting of the high pressure discharge lamp by changing the lighting power of the high pressure discharge lamp to a value that is lower than the rated power, and thereafter performing high power lighting of the high pressure discharge lamp by changing the lighting power to a value that is higher than the lighting power during the low power lighting.
展开▼