Yamato Kazuki, Yamashita Toshihiko, Chiba Hiroyuki, Oku Hiromasa
Graduate School of Science and Technology, Gunma University, 1-5-1, Tenjin-cho, Kiryu 376-8515, Japan.
Sensors (Basel). 2019 Apr 3;19(7):1606. doi: 10.3390/s19071606.
We developed a temporally coded exposure (TeCE) camera that can cope with high-speed focus variations of a tunable acoustic gradient index (TAG) lens. The TeCE camera can execute a very short exposure multiple times at an arbitrary timing during one shot. Furthermore, by accumulating the photoelectrons generated by each exposure, it is possible to maintain the brightness even with a short exposure time. By synchronously driving the TeCE camera and the TAG lens, different focal planes of an observation target can be acquired at high speed. As a result, high-speed three-dimensional measurement becomes possible, and this can be used for feedback of three-dimensional information. In the work described in this paper, we conducted a focus tracking experiment to evaluate the feedback performance of the TeCE camera. From the experimental results, we confirmed the feedback capability of the TeCE camera.
我们开发了一种时间编码曝光（TeCE）相机，它能够应对可调谐声梯度折射率（TAG）透镜的高速焦点变化。TeCE相机可以在一次拍摄过程中的任意时刻多次执行非常短的曝光。此外，通过累积每次曝光产生的光电子，即使曝光时间很短也能够保持亮度。通过同步驱动TeCE相机和TAG透镜，可以高速获取观察目标的不同焦平面。结果，高速三维测量成为可能，并且这可用于三维信息的反馈。在本文所述的工作中，我们进行了焦点跟踪实验以评估TeCE相机的反馈性能。从实验结果来看，我们证实了TeCE相机的反馈能力。
