Focal Length 50mm Cobra Series Fixed Focal Length Lenses F2.8-F22 WD 400-∞ 0.06kg OPT-COB5028B
Product Features
◆ The F/# aperture is F2.8-F22.
◆ It is designed with low distortion and TV distortion＜0.2%
◆ It can support high relative Illuminance and get high evenness image by matched with cameras.
◆ The OPT-COB5028B working distance is 400-∞.
◆ The diameter of image circle :11mm.
◆ Filter thread: M27*P0.5.
◆ Cobra series fixed focal length lenses OPT-COB5028B focal length is 50mm.
◆ Back focal length (mm): back focal length is 20.56mm when its working distance is 400mm; back focal length is 13.67mm when its working distance is infinity.
◆ Weight of OPT-COB5028B fixed focal length lens is 0.06kg.
◆ The cobra series fixed focal length lenses' resolution is 2.2µm.
◆ TV distortion is less than 0.07% at working distance of 500mm.
◆ Magnification at MOD is 0.136X at working distance of 400mm.
◆ The chief ray angle is＜5°.
Model Explanation
OPT-COB5028B
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-COB5028B |
| Focal Length | 50mm |
| Aperture range | From F2.8 to F22 |
| Working Distance(mm) | 400mm-∞ |
| TV Distortion(%) | Less than 0.07% at working distance of 500mm |
| Back focal length (mm) | 20.56mm when its working distance is 400mm 13.67mm when its working distance is infinity |
| Weight(kg) | 0.06kg |
| Image circle Ø (mm) | 11mm |
| Resolution (µm) | 2.2µm |
| Chief Ray Angle | Less than 5° |
| Magnification(x) at MOD | 0.136X at working distance of 400mm |
Resolution Comparison
Image taken via Cobra Series Fixed Focal Length Lens Image taken via other lens
Application Examples:
Inspection of absence
Dimensions (mm)
| OPT-COB5028B |
|  |
