① The double faced adhesive tape touch the lens when you test the optical path, lead to the glue left on the lens, and not wipe clean, start use the laser, will damage the lens .
② Use the laser when there is alcohol or water on the lens.
① The double faced adhesive tape touch the lens when you test the optical path, lead to the glue left on the lens, and not wipe clean, start use the laser, will damage the lens .
② Use the laser when there is alcohol or water on the lens.