CCD组件的热分析和热试验

Thermal Analysis and Thermal Balance Test of CCD Assembly

CCD组件是CCD相机能否传输高质量图片的关键 ,其对工作环境温度的要求非常严格 ,过高或过低的环境温度都会降低其光电转换的能力 ;同时 ,其自身的温度波动过大更会产生热噪声 ,从而使相机的分辨率降低。文章采用NEVADA和SINDA热分析软件计算分析了用电加热功率补偿来保持CCD片温度水平并减小CCD片温度波动的设计方法的可行性 ,得出了几种不同功率补偿方案对CCD组件温度波动的影响。

CCD assembly is the key part of a CCD camera. Weather a CCD camera can transfer high quality picture or not is decided by the ability of the CCD assembly. The working temperature of a CCD assembly is very strict, a too high or low temperature will depress the photoelectricity conversion ability of the assembly. At the same time, overmuch temperature fluctuate will result in hot noise, and depress the differentiating ability of the camera. In this paper, weather the electrothermal compensating method can minish the temperature fluctuate or not was discussed, and it was analyzed with NEVADA and SINDA thermal analysis software. Further more, educed the infection of different electrothermal scheme. A simulating thermal balance test to verify the thermal analysis is also quoted.