Card-Type Image Sensor for Multimedia Application

根据昆虫复眼成像系统的提示，设计了一种新的光学处理系统。提出了一种将几十微米直径的微透镜阵列板叠加在一起形成一个像的新方法，取代了传统的用一个光学透镜形成一个像的系统。通过将这两块板设置在固定的间距和小的旋转差，可以根据需要建立新的成像系统。并发现“一个图像旋转了90度”。利用光学透镜设计/分析仿真软件对该成像系统进行了分析。还采用了几何光学近似的光线追踪法。接下来，计划明确该系统的成像质量的限制。还计划在该系统中结合CCD设计一种厚度小于1 mm的视频输入设备。

A new optical processing system was devised takimg a hint from an imaging system by compound eyes of an insect. Instead of the classic image formation system to form one image with one optical lens, a new approach was proposed and tried to form one image by superposing micro lens array plates of a few tens micron diameter.At first, the quartz lens arrays, where micro convex lenses of the same size/characteristic are arranged in 2 dimensions, are produced by special reactive ion etching. It is confirmed that a new image formation system can be built as desired by setting these two plates at a fixed spacing and at a small rotation difference. And it is found that "an image rotates by 90 degree". Using an optical lens design/analysis simulation software, this image formation system is analyzed. Ray tracing by geometrical optics approximation is also applied.Next it is planned to make it clear limitation of the image quality of this system. It is also planned to devise a video input device of thickness less than 1 mm by combining CCDs in this system.