Cobra Series Fixed Focal Length Lenses Focal Length 25mm F2.8-F16 WD 150-∞ 0.05kg OPT-COB2528
◆ The F/# aperture of cobra series fixed focal length lenses is F2.8-F16.
◆ It is designed with low distortion that TV distortion＜0.2%
◆ It can support high relative Illuminance that lens' main light angle＜5°. Being matched with cameras is able to get high evenness image.
◆ The OPT-COB2528 working distance is 150-∞.
◆ The image circle diameter is 11mm.
◆ Filter thread: M27*P0.5.
◆ Cobra series fixed focal length lenses OPT-COB2528 focal length is 25mm.
◆ Back focal length (mm): back focal length is 16.63mm when its working distance is 150mm; back focal length is 12.65mm when its working distance is infinity.
◆ Weight of OPT-COB2528 fixed focal length lens is 0.05kg.
◆ The cobra series fixed focal length lenses OPT-COB2528 resolution is 2.2µm.
◆ TV distortion is less than 0.15% at working distance of 300mm.
◆ Magnification at MOD is 0.159X at working distance of 150mm.
◆ The chief ray angle is＜5°.
OPT: Brand name
OB: Cobra series lenses
25: Focal length: 25mm
28: F#: 2.8
||Fixed Focal Length Lenses of Cobra Series
||From F2.8 to F16
Less than 0.15% at working distance of 300mm
|Back focal length (mm)
16.63mm when its working distance is 150mm
12.65mm when its working distance is infinity
|Image circle Ø (mm)
|Chief Ray Angle
||Less than 5°
|Magnification(x) at MOD
0.159X at working distance of 150mm
Image taken via Cobra Series Fixed Focal Length Lens Image taken via other lens