ALLIED Vision Technologies Bigeye G-1100 Cool - Manual (Page 52)

AVT GigE Cameras Installation Manual V1.0.0
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Appendix
Avoiding the necessity of camera cleaning
When screwing/unscrewing the camera lens or dust cap, hold the camera with
the C-Mount / F-Mount opening towards the floor as shown in figure 41. This
minimizes the possibility of any contaminants falling on the glass surface.
Always store cameras and lenses with dust-caps installed.
Is it an impurity? – Identifying impurities
If you observe any image artefacts in your video preview of your AVT camera you
may have impurities either on the lens, filter/protection glass or, on the sensor
protection glass. Every AVT camera gets cleaned prior to sealing and shipment;
however, impurities may develop due to handling or unclean environments.
As shown in figure 42, impurities (dust, particles or fluids) on the sensor or
optical components appear as a dark area, patch or spot on the image and
remain fixed in the preview window while you rotate the camera over the target.
Do not confuse this with a pixel defect which appears as a distinct point. Parti-
cles can either rest loosely or can be more or less stuck to the optical surface.
Figure 41: Camera orientation when removing lens or dust cap
Figure 42: Image with tiny dust on the filter (left) and dust on the sensor (right)