It’s the 1532nm fiber laser system. Include a laser head, a laser power supply, a optic fiber, a collimator. The 1532nm laser beam is invisible light. Here we use infrared observation card to check the laser. Let’s check it now.
Test 1532nm infrared laser. It is not visible on the ordinary light barrier, but a circular spot is visible on the infrared observation card. After adding a collimator to observe the spot shape, the focus of the collimator is adjustable.