介绍一种测厚传感器,该测厚传感器采用激光测厚原理,详细讨论了透射式激光测厚传感器的研制,该装置具有连续、非接触、大面积测量、体积小、质量轻,无线传送数据等特点。该装置已经成功运行在聚酯薄膜生产线上。 关键词: 近红外; 测厚仪; 聚酯薄膜 Abstract : The fundamental principle of laser thick sensor through polyester film is introduced. The developmentprocess of laser thick sensor is discussed. The sensor has been used successfully on polyester film. Key words : near infrared ; gaugementer ; polyester film