Cobra Series Fixed Focal Length Lenses Focal Length 25mm F2.8-F16 WD 150-∞ 0.05kg OPT-COB2528
Product Features
◆ 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°.
Model Explanation
OPT-COB2528
OPT: Brand name
C: C-Mount
OB: Cobra series lenses
25: Focal length: 25mm
28: F#: 2.8
Specifications
| Product Name | Fixed Focal Length Lenses of Cobra Series |
| Model | OPT-COB2528 |
| Focal Length | 25mm |
| Aperture range | From F2.8 to F16 |
| Working Distance(mm) | 150mm-∞ |
| TV Distortion(%) | 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 |
| Weight(kg) | 0.05kg |
| Image circle Ø (mm) | 11mm |
| Resolution (µm) | 2.2µm |
| Chief Ray Angle | Less than 5° |
| Magnification(x) at MOD | 0.159X at working distance of 150mm |
Resolution Comparison
Image taken via Cobra Series Fixed Focal Length Lens Image taken via other lens
Application Examples:
Barcode reading
Dimensions (mm)
| OPT-COB2528 |
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