【摘要】 针对灰尘沾污投影机光路通道中各种镜头引起亮度降低、图象模糊不清的典型故障,介绍对光通道中反射镜、滤光片、分色镜、聚焦镜的拆卸和除尘过程、顺序、方法及注意事项。更多还原

【Abstract】 The paper introduces dust removal processes and methods in the projection light passage on account of the fact that the dusted lenses in the projection light passage result in reduced lightness and vague pictures.更多还原