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针对复杂背景中伪装目标偏振检测的问题,以中国颜色体系为基础,基于CIE1976L*a*b*颜色空间建立了LMS和lαβ两种颜色空间的256级亮度分量数据表,通过外场偏振检测实验,找到了目标与背景偏振度对比较高时的偏振片最佳参考方向,并研究了这两种空间在此方向上表征偏振信息的优劣和反映偏振检测能力强弱的问题。实验结果表明,以偏振片最大透光方向垂直于入射面为参考方向,在亮照度下,L空间的偏振图相比其灰...
LMS-93DF激光粒度分析仪
分析仪 粒度 激光测量
2008/10/15
LMS-93DF是光散射理论与最新的激光测量技术相结合的新一代微粒分析仪器,它具有操作简便、取样少、测量迅速和结果准确等特点。其粒度测量范围:0.5~200uM;测量时间:小于0.5秒;激光波长:632.8NM;测量精度:5%。该成果可用于药品、食品、荧光粉等行业的粉末或悬浮在溶液中的微粒的测量,年产(销)20台,可创税利30万元/年。
Near-complete transmission through subwavelength hole arrays in phonon-polaritonic thin films
transmission subwavelength hole arrays phonon-polaritonic thin fi lms
2015/8/11
We report that phonon-polaritonic thin films with a periodic array of subwavelength holes allow nearcomplete transmission in the polariton gap where a homogeneous film completely suppresse...
Guided modes supported by plasmonic films with a periodic arrangement of subwavelength slits
periodic arrangement subwavelength slits
2015/8/11
We calculate the guided band diagram of a metallic film with a one-dimensional periodic arrangement of cut-through subwavelength slits. We find that this system supports two distinct types...