Analysis of image planes Illumination in Image-forming System Journal of Physics: Conference Series
In the detection of optical radiation, the detecting accuracy is affected by optic power distribution of the detectors surface to a large extent. In addition, in the image-forming system, the quality of the image is greatly determined by the uniformity of the images illumination distribution. However, in the practical optical system, affected by the factors such as field of view, false light and off axis and so on, the distribution of the images illumination tends to be non uniform, so it is necessary to discuss the image planes illumination in imageforming systems. In order to analyze the characteristics of the image-forming system at a full range, on the basis of photometry, the formulas to calculate the illumination of the imaging plane have been summarized by the numbers. Moreover, the relationship between the horizontal offset of the light source and the illumination of the image has been discussed in detail. After that, the influence of some key factors such as aperture angle, off-axis distance and horizontal offset on illumination of the image has been brought forward. Through numerical simulation, various theoretical curves of those key factors have been given. The results of the numerical simulation show that it is recommended to aggrandize the diameter of the exit pupil to increase the illumination of the image. The angle of view plays a negative role in the illumination distribution of the image, that is, the uniformity of the illumination distribution can be enhanced by compressing the angle of view. Lastly, it is proved that telecentric optical design is an effective way to advance the uniformity of the illumination distribution.
Qing Miao Lu Tian kun Zhao Qingli Zhou Dongmei Zhao Yulei Shi
Laboratory of Optic Sensing and Detecting Technology, College of Science, China University of Petrol Laboratory of Optic Sensing and Detecting Technology, College of Science, China University of Petrol Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Key Laboratory of Terahertz Optoelect
国际会议
3rd International Photonics & OptoElectronics Meetings(第三届国际光子与光电子学会议 POEM 2010)
武汉
英文
1-6
2010-11-03（万方平台首次上网日期，不代表论文的发表时间）