用于图像拼接的电视摄像光学系统

采用图像拼接的方法获得了大视场、高角分辨率的电视摄像。用单心球透镜将无穷远目标成一以球透镜球心为圆心的球面像,用围绕球透镜的中继物镜阵列中的每一个中继物镜,按各自对应的球面上的一部分,成像在面阵CCD像面上,最后经电视图像处理技术将这些图像合拼成一幅图像。本文还给出了一个中继物镜阵列最多可由20×20个中继物镜组成的设计结果,焦距为457.9 mm,视场为 120°×104.8°,像素达到85亿、角分辨率为8"。用3个这样的系统,还可以实现360°全景式高分辨率摄像。这是一个在军事侦查、机场安全监视、空中和地面预警、航天摄影以及体育报道等方面具有广泛应用前景的新型电视摄像技术。

Optical system used to compose images in television photograph

Television photograph with a wide view-field and high angular resolution can be obtained by the method of image mosaic .A monocentric ball lens make infinity object to image on the spherical surface , of which the centre of circle is at centre of the ball lens .After that every relay lens in a relay lens arrays make respective section imaging on the surface of CCD .Finally we apply image processing technology to put many images together .The design results show that a relay lens array can be made up of 20 ×20 relay lenses view field of 120°×104.8°, F=457.9, F/8, 8.5-billions pixels and angular resolution of 8″.With three of this kind of system , we can also achieve 360 °panoramic photograph .This new technology in television photogra-phy will be used widely in military reconnoiter , airport security monitor , air and ground early warning and sports coverage , etc.