- Solution A: There is no efficiency loss when laser module works at 30mm working distance. Its optical output efficiency is more than 97%. At the same time, we can get smaller beam size with this solution at the same working distance.
- Solution B: There is around 24% efficiency loss when laser module works at 30mm working distance. At the same time, we can get bigger beam size with this solution at the same working distance.
- It can be concluded that LD+FAC+C-lens solution has high output efficiency under the same working distance.
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