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发明名称
实用教学投影器
摘要
本实用新型公布了一种实用教学投影器,由金属或玻璃材质制成的集聚光器是一个非线性曲面组成的,内壁为集聚光反射面。本产品不产生视觉干扰条纹,消除螺纹阴影及眩光对视力的不良影响,提高了放映质量,同时还减少了光损,使光源利用率提高一倍以上。该机使用国产教学投影片,不用遮挡台面。本机用温控降压装置代替变压器,既减轻了本机的重量,又使光源寿命延长二倍以上,节约了能源,降低了成本。
申请公布号
CN2100650U
申请公布日期
1992.04.01
申请号
CN91205232.5
申请日期
1991.04.04
申请人
牛纯正;杨继瀛;陈洪涛
发明人
牛纯正
分类号
G03B21/132;G02B27/18
主分类号
G03B21/132
代理机构
代理人
主权项
1、一种实用教学投影器,由降压装置(1)点光源(2)非线性集聚光器(3)放映平台(4)聚焦机构(5)放映镜组合(6)散热装置(7)及箱体(8)组成,其特征在于由金属或玻璃材质制成的集聚光器是一个由非线性曲面组成的,内壁为集聚光反射面。
地址
100045北京市西城区月坛地藏庵十楼4-4号
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