OPT
OPT-COB5028 C-Mount lens
Manufacturer part number: OPT-COB5028
Series: Cobra-Festbrennweiten
- Focal length
- 50 mm
- Max. Sensorformat
- 1/1.8" (2.2 µm)
- Mount
- C-Mount
- Aperture
- F2.8 - F22
- Filtergewinde
- M27 × 0.5
- Resolution
- 8 MP (berechnet)
- Fokusbereich (ab Objektivvorderseite)
- 250 - 2000 mm
- Fokuseinstellung
- Manual
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| Manufacturer part number | OPT-COB5028 |
|---|---|
| Focal Length(mm) | 50 mm |
| Sensor Format | 1/1.8" |
| Image Resolution(µm) | 2.2 µm |
| Adjustion Type | manuell |
| Aperture(F/#) | F2.8 – F22 |
| Working Distance(mm) | 250-2000 |
| Magnification（X） | 0.222 × at WD 250 |
| TV Distortion(%) | <0.01 % at WD 300 |
| Back Focal Length(mm) | 18.11 mm at WD 250 | 18.11 mm at ∞ |
| Chief Ray Angle | <5° |
| Mount | C-Mount |
| Filter Thread | M27×P0.5 |
| Size(mm) | Ø29.00 × 38.00 |
| Weight(kg) | 0.08 kg |
| Working Temperature | -20 °C – 60 °C |
| Coaxial | no |
| Image Circle Ø(mm) | Ø9 mm |
| Max. Sensorformat | 1/1.8" |
| Auflösung | 8 MP (von uns berechnet) |
| Pixelgröße | 2.2 µm |
| Mindestobjektdistanz (MOD) | Nicht angegeben |
| Spektralbereich | Nicht angegeben |
| Verzeichnung (max.) | < 0.01 % |
| Blendensteuerung | Nicht angegeben |
| Vibrationsfest | No |
| Baulänge | 38 mm |
| Durchmesser | Ø 29 mm |
| Lens type | Entocentric |
Data according to the manufacturer's documentation. The current manufacturer datasheet, quotation and order confirmation are authoritative. Errors and changes excepted.
Dimensional drawing
Documents
- Download datasheet
Cobra-Festbrennweiten - Serienbroschüre OPT
Datasheet · EN · 1539 KB
Description
With focal length 50 mm, aperture F2.8 - F22, image circle Ø9 mm, OPT-COB5028 belongs to the series “Cobra Fixed Focal Length Lenses” by OPT Machine Vision. Further key data: working distance 250-2000, C-Mount.
At Ø29 mm, the Cobra series is as slim as a compact camera and yet designed for pixels from 2.2 µm - up to 230 lp/mm across the full image field. The coating covers 400 to 1000 nm, TV distortion stays below 0.2 %, and a chief ray angle below 5° keeps the illumination uniform right into the corners. It fits wherever little space and high resolution come together: character inspection on plastic parts, chip and display inspection, particle control.
When choosing a lens, what counts is the interplay of sensor size, pixel size, field of view and working distance - the focal length alone says little. If you tell us your camera and inspection task, we check the combination and, if needed, suggest suitable lighting to go with it. The dimensional drawing is included.