OPT
OPT-COBR3556B C-Mount lens
Manufacturer part number: OPT-COBR3556B
Series: Cobra Ruggedized
- Focal length
- 35 mm
- Max. Sensorformat
- 2/3" (2.2 µm)
- Mount
- C-Mount
- Mindestobjektdistanz (MOD)
- 210 mm
- Aperture
- F5.6
- Filtergewinde
- M25 × 0.5
- Resolution
- 12 MP (berechnet)
- Fokusbereich (ab Objektivvorderseite)
- 210 mm up to ∞
- Fokuseinstellung
- Manual
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Have your application reviewedTechnical data
| Manufacturer part number | OPT-COBR3556B |
|---|---|
| Focal Length(mm) | 35 mm |
| Adjustion Type | manuell |
| Aperture(F/#) | F5.6 |
| Image Circle Ø(mm) | Ø11 mm (2/3") |
| Working Distance(mm) | 210 mm – ∞ |
| Magnification（X） | 0.161 × at WD 210 |
| Image Resolution(µm) | 2.2 µm |
| TV Distortion(%) | <0.20 % at WD 350 |
| Back Focal Length(mm) | 18.39 mm at WD 210 | 12.87 mm at ∞ |
| Effective Diameter Front(mm) | 15.8 mm |
| Effective Diameter Back(mm) | 12.0 mm |
| Chief Ray Angle | <5 |
| Mount | C-Mount |
| Weight(kg) | 0.064 kg |
| Size(mm) | 29 × 38.24 |
| Filter Thread | M25×0.5-6g |
| Working Temperature | -20 °C – +60 °C |
| Max. Sensorformat | 2/3" |
| Auflösung | 12 MP (von uns berechnet) |
| Pixelgröße | 2.2 µm |
| Mindestobjektdistanz (MOD) | 210 mm |
| Spektralbereich | Nicht angegeben |
| Verzeichnung (max.) | < 0.2 % |
| Blendensteuerung | Nicht zutreffend |
| Vibrationsfest | Yes |
| Baulänge | 38.24 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-COBR3556B (PDF)
Datasheet · EN · 209 KB
- Download datasheet
Optische Daten (MTF) OPT-COBR3556B
Datasheet · EN · 1 MB
- Download
3D-Modell OPT-COBR3556B (STEP, Grundmodell OPT-COBR3528-V1.0)
Technical drawing · EN · 4 MB
Description
With focal length 35 mm, aperture F5.6, image circle Ø11 mm (2/3"), OPT-COBR3556B belongs to the series “Cobra Ruggedized” by OPT Machine Vision. Further key data: working distance 210 mm - ∞, C-Mount.
Cobra Ruggedized is the vibration-resistant version of the Cobra series: fixed aperture, bonded lens groups and a housing under Ø26 × 42.6 mm. Shocks and continuous vibration shift neither focus nor optical axis; the resolution stays at up to 200 lp/mm for sensors up to 2/3". Intended for robots, vehicles, presses and anything that vibrates - wherever an adjustable lens would need readjusting after a short time.
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.