The HC series s SWIR coating that enables high transmittance in the short-wave infrared region Focus length (mm): 6 Image size (mm): 12.8 x 9.6 (Φ16) Focus range (mm): 100~∞ External dimensions (mm): Φ54 x 56.2 C mount: Screw-in mount with flange back 17.526mm镜头:1英寸固定焦点 F值:1.8〜11