638nm红光准直激光器

600nm-699nm

https://www.leirte.com/%E7%BA%A2%E5%85%89%E6%BF%80%E5%85%89%E5%99%A8%E6%B1%87%E6%80%BB%E8%A7%84%E6%A0%BC%E4%B9%A6-V3.0.pdf