The lens adopts k9 material and ultra wideband coating technology, with double-sided 12+12 layer coating. The RF ion source assists in the full process coating of 530nm-1100nm pump source green/red light, with a transmittance of over 99%, providing a non-destructive level of transmission experience. Comprehensively solve the problem of high reflection of green and red light in ordinary 2-layer or multi-layer yellow near-infrared coatings.

The maximum length is about 15cm, 

the minimum length is about 10cm, 

the maximum outer diameter is 36mm