원문정보
초록
영어
A new type of high precision digital star simulator was designed for the requirement of the application. The star simulator is a device used to test and correct the defect and spatial resolution. For this device, a compact structure of mechanical and electrical integration was designed for the optical system of the star simulator. The new-type white light X Lamp LED was used as the light source and the constant current source control system based on PWM was applied to control luminance of the light, which makes it possible for the digital subdivision control between the light intensity of 640~1.0 lux. Compared with the halogen lamp, the weaknesses of large volume, high heat leak and low precision is avoided by using LED light source. As shown in the test, the result indicated that the star simulator designed in this paper was compact, reasonable and easy to control. The simulated apparent magnitude can be reached between 0m~7m, and the spectral range can cover the whole visible light and the control precision can reach ±0.1m.
목차
1. Introduction
2. Structure Development of the High Precision Simulator
2.1. Structure Design andWorking Principle of Star Simulator
2.2. Optical Design of the System
2.3. Modeling and Optimization of Optical System
3. Design and Test Results of the Simulator
3.1. Spectral Modulation of LED Light Source
3.2. Calculation of the Luminous flux of LED Light Source
3.3. Control of the Light Source
3.4. Determination of Size and Position of the Star Point Hole
3.5. Test Results of Star Simulator
4. Conclusion
References