Cobra Series Fixed Focal Length Lenses Focal Length 50mm F2.8-F22 WD 250-2000mm 0.08kg OPT-COB5028
Product Features
◆ The F/# aperture is F2.8-F22.
◆ It supports high relative Illuminance and gets high evenness image by matched with cameras.
◆ The OPT-COB5028 working distance is 250-2000mm.
◆ The diameter of image circle :9mm.
◆ Filter thread: M27*P0.5.
◆ Cobra series fixed focal length lenses OPT-COB5028 focal length is 50mm.
◆ Back focal length (mm): back focal length is 18.11mm when its working distance is 250mm; back focal length is 18.11mm when its working distance is infinity.
◆ Weight of OPT-COB5028 fixed focal length lens is 0.08kg.
◆ The cobra series fixed focal length lenses' resolution is 2.2µm.
◆ TV distortion is less than 0.01% at working distance of 300mm.
◆ Magnification at MOD is 0.222X at working distance of 250mm.
◆ The chief ray angle is＜5°.
Model Explanation
OPT-COB5028
OPT: Brand name
C: C-Mount
OB: Cobra series lenses
50: Focal length: 50mm
28: F#: 2.8
Specifications
| Product Name | Fixed Focal Length Lenses of Cobra Series |
| Model | OPT-COB5028 |
| Focal Length | 50mm |
| Aperture range | From F2.8 to F22 |
| Working Distance(mm) | 250-2000mm |
| TV Distortion(%) | Less than 0.01% at working distance of 300mm |
| Back focal length (mm) | 18.11mm when its working distance is 250mm 18.11mm when its working distance is infinity |
| Weight(kg) | 0.08kg |
| Image circle Ø (mm) | 9mm |
| Resolution (µm) | 2.2µm |
| Chief Ray Angle | Less than 5° |
| Magnification(x) at MOD | 0.222X at working distance of 250mm |
Resolution Comparison
Image taken via Cobra Series Fixed Focal Length Lens Image taken via other lens
Application Examples:
Measurement of metal parts
Dimensions (mm)
| OPT-COB5028 |
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