摘要
近红外上转换发光显示器的图像色纯度差，主要由于红、绿、蓝三基色光的光谱存在次峰，为此分别设计出多层干涉过滤膜以改善该性能。根据多层干涉过滤膜设计原理，采用对称膜系结构并用MATLAB语言进行仿真优化，得到层数分别为17、15、15，厚度分别为1113．9nm、1504．3nm和1436．0nm的适合红、绿、蓝显示屏的3种多层膜。其在可见光波长区和0°～30°的角度范围内都达到很好的特性，并且具有较大的制造容差。
In order to filter out the unwanted colors for three primary luminescent materials, one multi-layer interference dielectric long-wavelength pass filter for red screen, and two short-wavelength pass filters for green and blue screens were designed and fabricated on the luminescent screens, respectively. Layer-symmetric films were used to design the filters and the conjugate gradient method was used to optimize the design by MATLAB. 17-layer filter for red screen, 15-layer filter for green screen ,and 15-layer filter for blue screen have a total thickness of I 113.9 nm, 1504.3 nm and 1436.0 nm, respectively. The obtained filters have good characteristics within the whole visible wavelength bandwidth and the incident angle range between 0°～30°. The manufacturing tolerances on material refractive index and film thickness are reasonably large.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
北大核心
2007年第6期154-157,共4页
Journal of Sichuan University (Engineering Science Edition)
基金
四川省应用基础研究项目资助项目(2006J13-078)
关键词
多层干涉过滤膜
近红外上转换发光
色纯度
interference filter
up-conversion of near infrared light
color saturation
