| 发明名称 |
Method and apparatus for controlling mirror motion in light scanning arrangements |
| 摘要 |
A method and apparatus of driving a motor in a light scanning arrangement. The method includes the following steps: (1) driving a drive coil with a drive signal to oscillate a scan mirror and a light beam reflected from the scan mirror; (2) generating a feedback signal having zero crossings during oscillation of the scan mirror by a feedback coil in proximity to the drive coil; (3) integrating the feedback signal to generate an integrated feedback signal; and (4) processing the integrated feedback signal to generate a periodic drive signal that has the same time period as the feedback signal. |
| 申请公布号 |
US8861059(B2) |
申请公布日期 |
2014.10.14 |
| 申请号 |
US201213418667 |
申请日期 |
2012.03.13 |
| 申请人 |
Symbol Technologies, Inc. |
发明人 |
Giebel James;Fazekas Peter |
| 分类号 |
G02B26/08;H02P25/02;G06K7/10 |
主分类号 |
G02B26/08 |
| 代理机构 |
|
代理人 |
Fan Nong-Qiang |
| 主权项 |
1. A motor drive circuit in a light scanning arrangement, comprising:
a) a drive coil driven by a drive signal to oscillate a scan mirror and a light beam reflected from the scan mirror; b) a feedback coil for generating a feedback signal having zero crossings during oscillation of the scan mirror, the feedback coil being in proximity to the drive coil; d) circuitry for integrating the feedback signal to generate an integrated feedback signal; and e) circuitry for processing the integrated feedback signal to generate a periodic drive signal that has the same time period as the feedback signal. |
| 地址 |
Holtsville NY US |
