OPT
OPT-S1256 S-Mount (M12) lens
Manufacturer part number: OPT-S1256
Series: M12-Festbrennweiten
- Focal length
- 12 mm
- Max. Sensorformat
- 1/1.7" (3.45 µm)
- Mount
- S-Mount (M12)
- Mindestobjektdistanz (MOD)
- 100 mm
- Aperture
- F5.6
- Resolution
- 3.5 MP (berechnet)
- Fokusbereich (ab Objektivvorderseite)
- 100 mm up to ∞
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| Manufacturer part number | OPT-S1256 |
|---|---|
| Focal Length(mm) | 12 mm |
| Aperture(F/#) | F5.6 |
| Image Circle Ø(mm) | Ø9.3 mm (1/1.7") |
| Working Distance(mm) | 100 mm – ∞ |
| Magnification（X） | 0.115 × at WD 100 |
| Image Resolution(µm) | 3.45 µm |
| TV Distortion(%) | <0.48 % at WD 400 |
| Back Focal Length(mm) | 8.79 mm at WD 100 | 7.38 mm at ∞ |
| Effective Diameter Front(mm) | 8.3 mm |
| Effective Diameter Back(mm) | 8.9 mm |
| Chief Ray Angle | <5.4° |
| Mount | S-Mount (M12) |
| Weight(kg) | 0.006 kg |
| Size(mm) | 15.00 × 17.21 |
| Working Temperature | -20 °C – +60 °C |
| Coaxial | no |
| Flange Focal Distance(mm) | 18.84 mm |
| Lens Type | Festbrennweite |
| Max. Sensorformat | 1/1.7" |
| Auflösung | 3.5 MP (von uns berechnet) |
| Pixelgröße | 3.45 µm |
| Mindestobjektdistanz (MOD) | 100 mm |
| Spektralbereich | Nicht angegeben |
| Verzeichnung (max.) | < 0.48 % |
| Filtergewinde | Nicht angegeben |
| Blendensteuerung | Nicht zutreffend |
| Vibrationsfest | No |
| Baulänge | 17.21 mm |
| Durchmesser | Ø 15 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-S1256 (PDF)
Datasheet · EN · 128 KB
- Download datasheet
Optische Daten (MTF) OPT-S1256
Datasheet · EN · 4550 KB
Description
The OPT-S1256 is listed in OPT's series “M12 Fixed Focal Length Lenses” with focal length 12 mm, aperture F5.6, image circle Ø9.3 mm (1/1.7"). Also: working distance 100 mm - ∞, S-Mount (M12).
The M12 series brings OPT optics to the S-Mount format: short overall length, fixed aperture F5.6 with large depth of field and a resolution close to the diffraction limit for sensors up to 1/1.7". The chief ray angle stays below 7.45°, so the illumination remains uniform. It sits in board-level cameras, smart cameras and code readers where a C-Mount lens would not fit.
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.