Traditional methods of measuring light wavelength are interference and diffraction methods .They have a lot of disadvantages ,such as complex instruments ,inconvenient operation and sensitive to vibration .A portable multi‐purpose light wavelength measuring instrument was designed . The instrument was consisted of color sensitive sensor ,voltage amplifier ,A/D converter ,display panel and other components .It could measure directly the wavelength of monochromatic light and mixed light if equipped with color filter ,and could identify colors .%传统的光波波长测量采用干涉法或衍射法，其仪器结构复杂，操作不便，容易受到震动的干扰。为此设计了便携式多用途光波波长测量仪，该仪器由色敏对数传感器、电压放大器、A／D转换器、显示器等组成，能直接测量单色光波长，加滤色片后可测混合光波长，还能识别颜色。
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