fθ场镜是使用扫描振镜或多面体反射镜，进行2维激光扫描时使用的透镜。
1.可用于条形码读码器或激光打标
2.激光精密加工
1.利用透镜的畸变效果，使扫描振镜等的反射镜的等速旋转运动变换为在焦点平面上的光斑的等速直线运动;
2.可以提供相对焦点平面，能垂直照射的远心型场镜;
3.可以提供YAG激光的基波(1064nm)和高次谐波(266nm，355nm，532nm)，以及CO2激光(9.3〜10.6μm)用fθ场镜;
| 序号 | 通光孔径 | 光纤接口 | 适用波长 | 聚焦焦距*1 | 视场范围 | CCD接口 | 测温模块 |
| mm | nm | mm | mm | 接口 | |||
| 1 | ≤20 | D80 | 800~1100 | 80 | θ12 | C/CS | 可选 |
| 2 | ≤20 | SMA-905 | 800~1100 | 125 | θ12 | C/CS | 可选 |
| 3 | ≤20 | QBH | 800~1100 | 160 | θ12 | C/CS | 可选 |
| 4 | ≤20 | 空间光 | 800~1100 | 其它 | θ12 | C/CS | 可选 |
| 备注：*1扫描物镜采用远心设计 | |||||||
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