Study on grinding of free-form optics surface in three-axis CNC machine

Yang, Haicheng; Zhang, Yun-Long; Zhang, Feng; Wang, Zhibin; Bao, Long-xiang; Su, Ying; Guo, Rui; Liu, Xuanmin

doi:10.1117/12.2068429

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Improved Stp Methods For Freeform Lenses1

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2016

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“…Condition (1) changes its form. For freeform lenses, its equations can be denoted by P x y , F ( ), which can be treated as a good approximation when the roughness error is much smaller than the profile error [24,25]. In the same way, for the given resolution p x , p y , there is:…”

Section: Improved Stp Methods For Freeform Lensesmentioning

confidence: 99%

Improved error separation technique for on-machine optical lens measurement

Zhao

Rao

et al. 2016

Meas. Sci. Technol.

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This paper describes an improved error separation technique (EST) for on-machine surface profile measurement which can be applied to optical lenses on precision and ultra-precision machine tools. With only one precise probe and a linear stage, improved EST not only reduces measurement costs, but also shortens the sampling interval, which implies that this method can be used to measure the profile of small-bore lenses. The improved EST with stitching method can be applied to measure the profile of high-height lenses as well. Since the improvement is simple, most of the traditional EST can be modified by this method. The theoretical analysis and experimental results in this paper show that the improved EST eliminates the slide error successfully and generates an accurate lens profile.

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Section: Improved Stp Methods For Freeform Lensesmentioning

confidence: 99%