Traditional dome
surveillance camera
systems typically
incorporate large heavy
telephoto zoom lenses,
which generate huge
inertial forces that the drive
train must overcome.
Automatic points of interest
can be pre-programmed
which require the quickest
Point-to-point response.
The design challenge set by
the client (Photo-scan) was
to reduce the response
time using the largest
telephoto lens possible.
This project was
commissioned by
HotHouse of London on a
freelance basis.
The resultant design
reduced rotational inertia
and increase performance
by a staggering 30%.
Following a full engineering evaluation of
the system constraints, the camera drive
system was re-engineered from the ground-
up. The pan-tilt gearing was optimised, and
the main rotational motion updated with an
opto controlled belt drive.
A key innovation involved the redesign of the
housing lid, making it a static and isolated
from rotation, thereby minimizing inertia.
