Brandaris 128:: A digital 25 million frames per second camera with 128 highly sensitive frames
Brandaris 128:: A digital 25 million frames per second camera with 128 highly sensitive frames
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DOI：
10.1063/1.1626013
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发表时间：
2003-12-01
影响因子：
1.6
通讯作者：
Lohse, D
中科院分区：
文献类型：
--
作者：
Chin, CT;Lancée, C;Lohse, D
构建了一种高速相机，该相机将定制的旋转镜相机框架与电荷耦合器件（CCD）图像探测器相结合，并且实际上完全由计算机控制操作。使用高灵敏度 CCD，无需使用会降低图像质量的图像增强器。使用定制的电子设备和仪器来提高灵活性并精确控制图像采集过程。可以以 2500 万帧/秒的最大帧速率获取每个 500x292 像素的 128 个连续图像帧的完整序列。完整序列可以每 20 毫秒重复一次，并且六个完整序列可以存储在相机内存缓冲区中。与计算机的高速通信链路允许在不到 1 秒的时间内将每个约 20 MB 的完整序列存储在硬盘上。该相机的灵敏度相当于国际标准组织编号 2500。在相机探测器平面上测得的分辨率为 36 lp/mm，而在显微镜下可以分辨出 400 nm 间距线对的条形图案。展示了用这款名为 Brandaris 128 的相机记录的一些高速事件。 (C) 2003 年美国物理研究所。
A high-speed camera that combines a customized rotating mirror camera frame with charge coupled device (CCD) image detectors and is practically fully operated by computer control was constructed. High sensitivity CCDs are used so that image intensifiers, which would degrade image quality, are not necessary. Customized electronics and instruments were used to improve the flexibility and control precisely the image acquisition process. A full sequence of 128 consecutive image frames with 500x292 pixels each can be acquired at a maximum frame rate of 25 million frames/s. Full sequences can be repeated every 20 ms, and six full sequences can be stored on the in-camera memory buffer. A high-speed communication link to a computer allows each full sequence of about 20 Mbytes to be stored on a hard disk in less than 1 s. The sensitivity of the camera has an equivalent International Standards Organization number of 2500. Resolution was measured to be 36 lp/mm on the detector plane of the camera, while under a microscope a bar pattern of 400 nm spacing line pairs could be resolved. Some high-speed events recorded with this camera, dubbed Brandaris 128, are presented. (C) 2003 American Institute of Physics.