A handle assembly with built-in video camera controlling a lamp lifting device
for a surgical lamp by rotating some angles for adjusting the light's illumination
zone, when focused on a planar surface. The handle assembly has a stationary disk
which separates the video camera from a rotation device for the handle, so that
the rotation of the handle for adjusting an illumination zone will not affect video
camera picture shooting angle. The handle further has a gear set and belt located
inside for transmitting the rotation of the handle to the lamp bracket lifting
device for adjusting the light's illumination zone without moving the video camera
shooting angle. In order to prevent the rotation of the handle from affecting the
adjustment of the picture angle of the video camera, the stationary disk has a
rotary inner ring for mounting the video camera and a stationary outer ring for
engaging with the rotation device of the handle. It thus resolves the conventional
problem of allowing both rotation of the video camera and adjustment of the light
projection scope.
