8. FOCUSING THE INFRARED CAMERA
8
Focusing the Infrared Camera
The infrared camera has adjustable focus. The focus can be set using the focus tool (included).
Warning
: The MEDICAS camera is focused to 4 m (13.1 ) during manufacturing. This means you should
place the black body to the same distance (4 m or 13.1 ) and measure the temperature at the range 3-6
m (9.8-19.7 ). You can also refocus the camera to 8 m (26.2 ) using the focusing tool (included). There
is a 4 m (13.1 ) focusing mark ”COMMA” and a 8 m (26.2 ) focusing mark ”DOT” painted on the side
of the objec ve. When you focus the camera to the 8 m (26.2 ) mark, you should also place the Black
Body to this distance (8 m or 26.2 ). Best measurement results are then achieved at distance range 7-11
m (23-36.1 ) from the camera. Considering the delicate nature of the op cs
it is be er to not change
the focus of the camera too o en. Be very careful while removing the protec ve glass and adjus ng
the focus of the lens.
(a) Focus tool version 1
(b) Focus tool version 2
(c) Protec ve cap
(d) Focusing the lens
Figure 8.1 – Remove the protec ve cap with focus tool (wider side). Focus the lens with the focus tool (narrower
side) to short distance by rota ng the lens counter-clockwise. To focus to the long distance, rotate the lens
clockwise
When focused to the 8 m (26.2 ) distance marked by the DOT, in order to focus to the 4 m (13.1 ) distance
gently rotate the lens counter-clockwise un l you reach the COMMA mark. Only very short movement is needed.
(a) Lens focused to 4m (marked by
COMMA)
(b) Lens focused to 8m (marked by
DOT)
Figure 8.2 – Detail of the camera focused to different distances and markings on the side of the lens.
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Revision 1.2.0 EN, 28
th
May, 2020
All pictures are only for illustra on.
Real values may vary.
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