| 数量 | 价格(USD) | 发货日期 |
|---|---|---|
| 1-10 | $17.00 | 待定 |
| 10- | $17.00 | 待定 |
注意:发货日期以上是因库存不足而调整的。

This is the workhorse of the series. Featuring the industry-standard 25.4mm (1 inch) diameter and a -50mm focal length, it is the go-to choice for the negative element in Galilean beam expanders.
Its precision surface quality (40-20) ensures that the expanded beam remains clean and uniform.
| D (mm) | f (mm) | Te (mm) | Tc (mm) | fb (mm) | r (mm) | Centration |
|---|---|---|---|---|---|---|
| 25.4 | -50 | 5.3 | 2 | -51.3 | 25.95 | ≤ 1' |
| 数量 | 价格(USD) | 发货日期 |
|---|---|---|
| 1-10 | $17.00 | 待定 |
| 10- | $17.00 | 待定 |