High-speed sequential image acquisition using a CMOS image sensor with a multi-lens optical system and its application for three-dimensional measurement

2009 ◽  
Author(s):  
Daisuke Miyazaki ◽  
Hiroki Shimizu ◽  
Yoshizumi Nakao ◽  
Takashi Toyoda ◽  
Yasuo Masaki
Keyword(s):  
Optical System ◽  
High Speed ◽  
Image Acquisition ◽  
Three Dimensional ◽  
Cmos Image Sensor ◽  
Image Sensor ◽  
Dimensional Measurement ◽  
Three Dimensional Measurement ◽  
Sequential Image

Three-dimensional measurement by high-speed line-field Fourier-domain optical coherence tomography in vivo

2006 ◽  
Author(s):  
Shuichi Makita ◽  
Yosifumi Nakamura ◽  
Yoshiaki Yasuno ◽  
Takashi Endo ◽  
Masahiro Yamanari ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
High Speed ◽  
Three Dimensional ◽  
Fourier Domain ◽  
Optical Coherence ◽  
Line Field ◽  
Dimensional Measurement ◽  
Three Dimensional Measurement

scholarly journals Fast Volumetric Feedback under Microscope by Temporally Coded Exposure Camera

Sensors ◽  
2019 ◽  
Vol 19 (7) ◽  
pp. 1606 ◽  
Author(s):  
Kazuki Yamato ◽  
Toshihiko Yamashita ◽  
Hiroyuki Chiba ◽  
Hiromasa Oku
Keyword(s):  
Exposure Time ◽  
High Speed ◽  
Three Dimensional ◽  
Experimental Results ◽  
Short Exposure ◽  
Gradient Index ◽  
Short Exposure Time ◽  
Dimensional Measurement ◽  
Three Dimensional Measurement ◽  
Coded Exposure

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.

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