KEYWORDS: Staring arrays, Cameras, Flexible circuits, Copper, Resistance, Heatsinks, Control systems, Energy efficiency, Power supplies, Monte Carlo methods
The structure of a space electric cabinet based on a commercial CMOS chip is presented. Analysis is conducted according to the temperature specifications and the environmental constraints, which indicates the partitional thermal control method has higher energy efficiency than conventional TEC cooling. A flexible graphite thermal cable is used to build an independent cooling path for the focal plane component. The camera hood is utilized to cool down the peripheral circuit. Copper sinks are designed for high power electronic components. The thermal control design is verified by finite element simulation analysis and thermal balance test. The experimental results show that the partitional thermal control measures are effective and feasible, which can ensure the -30°C operating temperature of CMOS chip and the derating requirements of components with high power consumption.
To improve environmental adaptability, an optical system with passive optical athermalization was designed. This system adopts a transmission structure with a spectral range of 0.4-1.0μm, a focal length of 166mm, a F number of 3.7 and a field view of 5°. An optical system with passive optical athermalization should satisfy three constraints. The first is the power distribution of each lens. The second is the achromatic equation. The last one is the athermal equation. A reasonable optical material combination is obtained by solving the three conditional equations. Then the initial optical system is simulated and optimized by Zemax. In the end, this system gains good imaging quality in the working temperature range of 10-30°C.
This paper has developed the theory research of wide field Angel lobster eye X-ray optical system based on the principle of entirely incidence. Combine the configuration characteristic of lobster eye, recommend the conclusion of beam of light focus on the half of radius whether point or parallel light. Designed the microchannel through the principle of real ray trace and got the relationship among different parameters about it using numerical value emulation. Got pixels and illumination pictures validated the wide field focus characteristic of Angel lobster eye by simulating the optical system.
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