| 发明名称 |
LENGTH MEASURING APPARATUS, AND METHOD OF MANUFACTURING ARTICLE |
| 摘要 |
A length measuring apparatus configured to perform length measurement for an object moving in a measurement region includes a detector configured to detect light modulated by the object with a Doppler effect, and a processor configured to obtain a measurement value of a velocity of the object based on a signal from the detector, and obtain a length for the object based on the measurement value. The processor is configured to specify a point in time corresponding to the object based on an amplitude of the signal, obtain the measurement value based on the signal with respect to a time duration defined by the point in time, and obtain the length based on the measurement value obtained with respect to the time duration. |
| 申请公布号 |
US2017003115(A1) |
申请公布日期 |
2017.01.05 |
| 申请号 |
US201615196731 |
申请日期 |
2016.06.29 |
| 申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
Kuroki Yukie;Uozumi Takayuki;Koike Hiroshi |
| 分类号 |
G01B11/04 |
主分类号 |
G01B11/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A length measuring apparatus configured to perform length measurement for an object moving in a measurement region, the apparatus comprising:
a detector configured to detect light modulated by the object with a Doppler effect; and a processor configured to obtain a measurement value of a velocity of the object based on a signal from the detector and obtain a length for the object based on the measurement value, wherein the processor is configured to specify a point in time corresponding to the object based on an amplitude of the signal, obtain the measurement value based on the signal with respect to a time duration defined by the point in time, and obtain the length based on the measurement value obtained with respect to the time duration. |
| 地址 |
Tokyo JP |
