 |
|
Plano-Concave Spherical Lenses 平凹透鏡
| 無鍍膜 | BK7 |
• 無鍍膜
• 透光範圍：350 nm~2000 nm
• 熱膨脹係數：7.5X10-6 /K
| Specifications |
|
Material :
|
BK7
|
|
Dimension Tolerance :
|
+0/-0.2mm
|
|
Thickness Tolerance :
|
±0.2mm
|
|
Design Wavelength :
|
546.1nm
|
|
Surface Quality :
|
60/40 scratch and dig
|
|
Centration :
|
<3 arc minutes
|
|
Focal Length Tolerance :
|
±2%
|
|
Clear Aperture :
|
>90%
|
|
Coating :
|
None
|
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