| hopebox |
2014-10-29 20:30 |
[attachment=59416] R##O9BSI8Z
The user manual says: 4"{q|~&=:$
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Beam Size: The beam radius at the 1 over e^2 point in intensity in lens units. So it is defined as 半径. < javZJ
[*fnTy
For the "position", consider the picture attached.
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