
OPT
CBA5065 C-Mount lens
Manufacturer part number: CBA5065
Series: CBA-Festvergrößerung
- Makro-Typ
- Fester Abbildungsmaßstab
- Abbildungsmaßstab
- 0.15 × / 0.3 × / 0.5 ×
- Objektfeld
- Ø121.3 / Ø60.7 / Ø36.4 mm
- Arbeitsabstand
- 123 / 189 / 354 mm
- Empfohlene Pixelgröße
- 3.45 µm
- Verzeichnung
- < 0.22 %
- Mount
- C-Mount
- Aperture
- F6.5 - F74.5
Price and availability on request
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| Manufacturer part number | CBA5065 |
|---|---|
| Lens Type | Feste Vergrößerung, Fixfokus |
| Focal Length (mm) | 50 mm |
| Magnification | 0.15 × | 0.30 × | 0.50 × |
| Working Distance (mm) | 354 mm | 189 mm | 123 mm |
| Field of View ∅ (mm) | Ø121.3 mm | Ø60.7 mm | Ø36.4 mm |
| O/I Distance (mm) | 439.0 mm | 281.3 mm | 225.6 mm |
| Flange Distance (mm) | 50.5 mm | 58 mm | 67.9 mm |
| Aperture Range | F6.5 - F74.5 |
| Distortion | <0.22 % | <0.23 % | <0.23 % |
| Sensor ∅ (mm) | Ø18.2 mm |
| Image Resolution (µm) | 3.45 µm |
| Adjustion Type | manuell |
| Mount | C-Mount (1-32UN-2A) |
| Filter Thread | M18 × 0.5-6H |
| Effective Front ∅(mm) | Ø12.8 mm |
| Diameter Back ∅(mm) | Ø14.8 mm |
| Size (mm) | Ø29 × 34.86 mm |
| Weight (kg) | 0.05 kg |
| Working Temperature | -20 °C up to +60 °C |
| Note | Zwischenringe and Fokussiertubus erforderlich (Herstellerhinweis) |
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-CBA5065 (PDF)
Datasheet · EN · 566 KB
- Download datasheet
CBA-Festvergrößerung - Seriendatenblatt OPT (PDF)
Datasheet · EN · 1420 KB
Description
CBA5065 is a fixed magnification lens from OPT's CBA series: focal length 50 mm, magnification 0.15×, 0.30× or 0.50× (with extension tubes and focusing tube), working distance 354, 189 or 123 mm, image circle Ø18.2 mm, aperture F6.5 - F74.5, C-mount.
The three magnifications are set with extension tubes and a focusing tube; each step has its own field of view (Ø121.3 mm, Ø60.7 mm, Ø36.4 mm), flange focal distance (50.5 mm, 58 mm, 67.9 mm) and object-to-image distance (439.0 mm, 281.3 mm, 225.6 mm). Distortion stays below 0.22 %, 0.23 %, 0.23 %. Once set up, the image scale is fixed, which keeps measurement results comparable from batch to batch. Housing Ø29 × 34.86 mm, 0.05 kg, filter thread M18 × 0.5-6H, operating temperature -20 °C to +60 °C.
According to the manufacturer, the series resolves 145 lp/mm across the full field and suits cameras with pixels from 3.45 µm and sensors up to Ø18.2 mm; relative illumination is above 90 %, so brightness stays even out to the edge of the image. The long working distance leaves room for lighting and part handling. Typical tasks: inspection of PCBs, motor welds and heat sinks, and spacing checks on hardware.
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.
