| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
High-accuracy and high-speed optical ranging system was developed by utilizing FMCW sensing system using an optical frequency-swept laser source. The measurement accuracy of 2.7 um at 17cm measurement length was achieved by using a vertical-cavity surface-emitting laser as the frequency-swept laser source and by utilizing the k-sampling technique. The developed system was applied to three-dimensional object profiling, and very fine profiling of the shape and incuse of a coin was successfully realized. Finally, the timing of the data acquisition and angle change of the Galvano scanner was optimized to stabilize the transient property of the Galvano scanner for high-speed profiling, and the measurement time of as fast as 22.6 sec was achieved for fine profiling of a coin, which is about 25 times faster as compared to the measurement time of 600 sec when a DFB laser is used as the frequency-swept laser source.
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