USB-CAM-003H / 103H / 004H / 104H / 051H / 151H / 052H / 152H
22
©
PHYTEC Messtechnik GmbH 2011 L-740e_0
In this case you can solve the problem with the help of the camera’s
flange focal distance setting ring. As shown in
Figure 14
, this ring is
attached with two set-screws.
You can access these screws through two holes on the side and the
bottom of the camera housing. After you have loosen the set-screws,
you can adjust the camera’s flange focal distance setting ring
according to your requirements.
Hints:
•
Adjustment of the flange focal distance is usually only required if
you are having problems with focusing in „infinite“ or with objects
close to the lens. Since adjusting the flange focal distance can
quickly lead to problems with the imaging system, it should only
be done if absolutely necessary!
•
If the picture is out of focus in all of the lens ranges, please check
to see if you have a C-Mount lens (use adapter ring) or a CS-
Mount lens (remove adapter ring).
•
It is possible that the lens is not suited for the desired object
distance. In this case you will be able to focus on remote objects,
but not on close objects. The required minimum distance between
the object and the lens is called the
minimum object distance
(M.O.D.) and is provided in the lens data. PHYTEC support will
be happy to advise you on the selection of an alternative lens or on
the implementation of extension rings, which reduce the M.O.D.
Caution!
Some lenses have very high insertion depth. In these cases the above
portioned parts of the lens can damage the Sensor and/or the filter of
the same. Please note that when you are using this type of lens your
warranty is made void.
