【摘 要】
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High-speed video cameras are indispensable tools for diagnostics on spray, atomization and drops. An image sensor with 300 kpixels operating at 40 Mfps at t
【机 构】
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ResearchInstituteforScienceandTechnology,RitsumeikanUniversity,Kusatsu,525-8577JAPANHanoiUniversityo
【出 处】
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13th International Conference on Liquid Atomization and Spra
论文部分内容阅读
High-speed video cameras are indispensable tools for diagnostics on spray, atomization and drops. An image sensor with 300 kpixels operating at 40 Mfps at the highest frame rate is developed. Though the pixel count may not be sufficiently high for diagnostics of atomization of fluids to fine drops, the camera is useful in visualization of very fast sprays, especially, through a very small window, which requires a much higher frame rate, inversely proportionate to the size of the window. This paper presents the concept, the structure and the performance of the image sensor obtained through evaluation with the test camera. The image sensor has pixels each of which has in-situ storage of image signals. The in-situ signal storage is a linear CCD elongating in a direction slightly slanted to the pixel grid from the photodiode of each pixel. Simultaneous recording of image signals at all pixels makes it possible to capture consecutive frames at a time interval for a signal packet to be transferred from the photodiode to the nearby one of the storage element of each pixel.
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