Научно-технический
«ОПТИЧЕСКИЙ ЖУРНАЛ»
издается с 1931 года
Апрель 2014 № 4(81)

SMOOTHING EVOLUTION MODEL FOR COMPUTER CONTROLLED OPTICAL SURFACING

Сху Ё. ., Ние Х. ., Схи Ф. ., Ли С. .


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A polishing pad can smooth out mid-to-high spatial frequency errors automatically due to its rigidity and modeling of the smoothing effect is important. The relationship between surface error and polishing time is built here based on Bridging model and Preston’s equation. A series of smoothing experiments using pitch tools under different motion manners were performed and the results verified exponential decay between surface error and smoothing time. At the same time, parameters describing smoothing efficiency and smoothing limit were also fitted from the results. This method can be applied to predict the smoothing effect, estimate the smoothing time and compare smoothing rates of different runs.
Ключевые слова: Computer Controlled Optical Surfacing, mid-to-high spatial frequency errors, smoothing efficiency, smoothing evolution model
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