据统计去年家庭购买投影机的数量占全球投影机总销量的30%以上,超过10万台;而在国内,家庭购买量却只占到总销量5%左右。造成差距如此巨大的原因,一方面是人们观念上的差异;另一方面是受投影机价格及其他客观条件限制所致。在许多人的印象之中,投影机仅是大型会议中心、高档娱乐场所及部分教育领域的应用工具,体积 According to statistics, the number of households purchasing projectors accounted for over 30% of the total global projector sales over 100,000 units last year. In China, however, household purchases account for only about 5% of total sales. The reason for the huge gap is the difference in people’s concept on the one hand and the restrictions on projector prices and other objective conditions on the other. Among many people’s impressions, the projector is just an application tool for large conference centers, upscale entertainment venues, and some educational fields. The volume