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標題: 光學鏡片成型後表面殘留應力層之檢測
The inspection of stress-deformed-layer In Optical Lens After CG Process
作者: 李建誼
關鍵字: optical lens;光學鏡片;curve generation;x-ray diffraction;residual stress;rocking curve;surface roughness;stress optical law;成型;x光繞射;殘留應力;轉動曲線;表面粗糙度;應力光學定律
出版社: 機械工程學系

The quality of an optical device highly relies on the control of the fabrication induced residual stress. The stress-deformed layer will degrade the homogeneity of material and inevitably worsens the quality of the optical device.
In this research, the curve-generation (CG) and the grinding process of an optical device, which are likely to produce residual stresses, are elaborately investigated. The single crystal quartz is adopted as the material of the optical lens. The X-ray diffractometer is implemented to measure the depth of the fabrication induced residual stress. The relationships between the depth of the stress-deformed layer and the surface roughness of the optical lens are thus discussed. To systematically estimate the depth of the stress-deformed layer and be able to precisely remove it, the neural network approach is employed to model the nonlinear lens fabrication processes. Experimental results demonstrate that the proposed methodology can effectively detect and get rid of the fabrication induced residual stress.
Appears in Collections:機械工程學系所

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