OPT
OPT-COB5028B C-Mount lens
Manufacturer part number: OPT-COB5028B
Series: Cobra-Festbrennweiten
- Focal length
- 50 mm
- Max. Sensorformat
- 2/3" (2.2 µm)
- Mount
- C-Mount
- Mindestobjektdistanz (MOD)
- 400 mm
- Aperture
- F2.8 - F22
- Filtergewinde
- M27 × 0.5
- Resolution
- 12 MP (berechnet)
- Fokusbereich (ab Objektivvorderseite)
- 400 mm up to ∞
- Fokuseinstellung
- Manual
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| Manufacturer part number | OPT-COB5028B |
|---|---|
| Focal Length(mm) | 50 mm |
| Sensor Format | 2/3" |
| Image Resolution(µm) | 2.2 µm |
| Adjustion Type | manuell |
| Aperture(F/#) | F2.8 – F22 |
| Working Distance(mm) | 400 mm – ∞ |
| Magnification（X） | 0.136 × at WD 400 |
| TV Distortion(%) | <0.07 % at WD 500 |
| Back Focal Length(mm) | 20.56 mm at WD 400 | 13.67 mm at ∞ |
| Chief Ray Angle | <5° |
| Mount | C-Mount |
| Filter Thread | M27×P0.5 |
| Size(mm) | Ø29.00 × 41.77 |
| Weight(kg) | 0.062 kg |
| Working Temperature | -20 °C – 60 °C |
| Coaxial | no |
| Image Circle Ø(mm) | Ø11 mm (2/3") |
| Flange Focal Distance(mm) | 17.526 mm |
| Max. Sensorformat | 2/3" |
| Auflösung | 12 MP (von uns berechnet) |
| Pixelgröße | 2.2 µm |
| Mindestobjektdistanz (MOD) | 400 mm |
| Spektralbereich | Nicht angegeben |
| Verzeichnung (max.) | < 0.07 % |
| Blendensteuerung | Nicht angegeben |
| Vibrationsfest | No |
| Baulänge | 41.77 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
Datasheet mit Maßzeichnung OPT-COB5028B (PDF)
Datasheet · EN · 145 KB
- Download datasheet
Optische Daten (MTF) OPT-COB5028B
Datasheet · EN · 379 KB
- Download datasheet
Cobra-Festbrennweiten - Serienbroschüre OPT
Datasheet · EN · 5328 KB
- Download
3D-Modell OPT-COB5028B (STEP)
Technical drawing · EN · 5140 KB
Description
With focal length 50 mm, aperture F2.8 - F22, image circle Ø11 mm (2/3"), OPT-COB5028B belongs to the series “Cobra Fixed Focal Length Lenses” by OPT Machine Vision. Further key data: working distance 400 mm - ∞, 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 and the STEP model are included.