| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
|
|---|
| Outline of Final Research Achievements |
Optical ranging system with 100um measurement accuracy has been developed by utilizing FMCW sensing system using an optical frequency-swept laser source. The measurement accuracy of the system is seriously affected by nonlinearity in the optical frequency sweep. Highly accurate measurement system with the standard deviation of less than 10um was realized by developing synchronous sampling method to eliminate the effect of nonlinear optical frequency sweep and by applying interpolation to measurement result. The developed system is then used for three-dimensional object profiling, and we have succeeded profiling of objects such as coins with the steps less than 150um.
In addition, we have developed a method to modify and optimize modulation waveform of a laser to achieve linear optical frequency sweep.
|
