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TUNABLE ACOUSTIC GRADIENT LENS SYSTEM WITH AMPLITUDE ADJUSTMENT CORRESPONDING TO Z-HEIGHT AS INDICATED BY CALIBRATION DATA
TUNABLE ACOUSTIC GRADIENT LENS SYSTEM WITH AMPLITUDE ADJUSTMENT CORRESPONDING TO Z-HEIGHT AS INDICATED BY CALIBRATION DATA
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机译:可调谐声学梯度透镜系统,幅度调节对应于Z高度,如校准数据所示
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摘要
A variable focal length lens system includes a tunable acoustic gradient (TAG) lens; a TAG lens controller; a light source; a camera; and processor(s) configured to: (a) drive a periodic modulation of the TAG lens optical power, using a first amplitude driving signal that provides a first amplitude of the periodic modulation at a resonant frequency of the TAG lens, the first amplitude corresponding to a first focal Z range extending between peak focus distances Z1max+ and Z1max−, wherein the first amplitude driving signal is selected based on a first target focus distance Ztarget−1 and calibration data which relates different amplitude driving signals to different target focus distances Ztarget−i; and (b) operate the light source and camera to expose an image using at least one exposure increment wherein the focus distance during the exposure increment moves over a first exposure Z range that includes the target focus distance Ztarget−1.
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机译:可变焦距透镜系统包括可调谐声学梯度(标签)镜头;标签镜头控制器;光源;相机;和处理器配置为:(a)使用第一幅度驱动信号驱动标签透镜光功率的周期性调制,该第一幅度驱动信号在标签镜头的谐振频率下提供周期性调制的第一幅度,第一幅度对应在峰值聚焦距离Z 1 B> MAX +和Z 1之间延伸的第一焦点Z范围延伸,其中基于第一目标焦点距离Ztarget选择第一幅度驱动信号-1和校准数据,与不同的幅度驱动信号相关到不同的目标焦点距离ztarget-i; (b)操作光源和相机使用至少一种曝光增量来暴露图像,其中曝光增量期间的焦距在包括目标聚焦距离ztarget-1的第一曝光z范围内移动。
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