Piranha ES-Sx User Manual
Teledyne DALSA
03-032-20162-00
45
The
focal point
is the point at which the image of an infinitely distant object is brought to
focus. The
effective focal length (f
′
)
is the distance from the second principal point to the
second focal point. The
back focal length (BFL)
is the distance from the image side of the
lens surface to the second focal point. The
object distance (OD)
is the distance from the first
principal point to the object.
Figure 11: Primary Points in a Lens System
4.3 High Temperature and Mounting
Warning!
Depending on the mounting design and the operating conditions the camera
body could become hot. You must take precautions to ensure your safety and avoid
touching the camera directly during operation.
Mounting Instructions and Recommendations
Proper camera mounting ensures that the heat generated by the camera dissipates
properly and that the camera maintains a safe temperature.
1.
The camera should be bolted tightly to a mounting plate made of thermally
conductive material (e.g. Aluminum).
2.
Keep contact area between the camera’s front surface and the mounting plate surface
as large as possible. Do not use “stand-off” style mounting.
3.
Design the camera mounting plate so that there is enough surface area to dissipate
heat. An example of a properly mounted camera is illustrated on the following page.
4.
Forced air flow to the fins is the most effective way to cool the camera. If forced air
flow is not available, then leave enough space around the fins so that heat can easily
dissipate into the air by natural convection.
5.
The mount setup plus the airflow must dissipate 40 Watts or more of heat.
6.
Proper thermal mounting of the camera should result in an internal camera
temperature < 65 ºC (verify using command vt) and a front plate temperature < 50 ºC.
Note:
To avoid internal damage the camera automatically shuts down when the internal
temperature reaches 75 ºC.
The recommendations assume the following conditions:
•
The camera mounting plate has at least 5,047 mm sq. contact surface (equal to the full
camera mounting surface, as shown) and approximately 3,000 mm sq. of natural
convection surface.
•
No impediments to the natural convection space around the surface of the mounting
plate and the surface of the camera.
•
An environment temperature of approximately 25 ºC.
•
Good contact between the mounting plate and the camera surface.
!
