Design method for a Cassegrain-type scanner

Wei-Shen Wu

doi:10.1117/12.131340

28 October 1992 Design method for a Cassegrain-type scanner

Wei-Shen Wu

Proceedings Volume 1816, Electro-Optic Computer Peripherals Technology; (1992) https://doi.org/10.1117/12.131340
Event: International Symposium on Optoelectronics in Computers, Communications, and Control, 1992, Hsinchu, Taiwan

Abstract

A roseet scanning pattern is expressed as the vector sum of two counter-rotating vectors. For a Cassegrain system, the scanning pattern is a function of system parameters such as the canted angle, the scanning rate ratio, the configuration of each scanning element, and the distance between them. Using the optical ray tracing method along the direction of the system axis, an algorithm to compute the pattern is derived. This method can be employed to design a scanning-pattern system. By adjusting the system parameters, the desired scanning pattern can be obtained. Finally, by computer simulation with this design algorithm, the results including the effect due to the deflection error are consistent with the experimental observation.

Citation Download Citation

Wei-Shen Wu "Design method for a Cassegrain-type scanner", Proc. SPIE 1816, Electro-Optic Computer Peripherals Technology, (28 October 1992); https://doi.org/10.1117/12.131340

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