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| GB/T 22149-2008 Overhead projectors - Methods for measuring performance characteristics (English Version) |
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Detail of GB/T 22149-2008
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Introduction of GB/T 22149-2008
本标准规定了透射式投影器的有效光通量、银幕照度均匀度、画面畸变、最大有效投影仰角和投影器台面温升的测定方法。
本标准适用于JB/T8259.1中所有类型的透射式投影器。不适用于反射式投影器和其他特殊用途的投影器。
Contents of GB/T 22149-2008