Abstract: 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.

Abstract: A lift adjusting module is located in a surgical operation lamp and includes a plurality of latch elements to movably latch on petal sections of a brake piece. The brake piece runs through a rotary member and a rotary shaft. When a handle receives force, the rotary member drives the rotary shaft and moves a lamp seat axially to control the projection focus scope of the operation lamp. In the mean time, the latch elements are compressed and selectively embedded in the rotary member to effectively prevent the operation lamp from wearing and being damaged due to improper force. Thus surgical operation safety may be enhanced and the service life of the operation lamp can be increased.

Abstract: A sparkle suppression circuit to protect the contact terminals of operation light bulbs contains at least a power supply, a driving circuit, a sensor circuit, and a control circuit. The power supply provides the power needed for the suppression circuit. The sensor circuit detects sensor signals of the operation light bulb and to output the sensor signals. The control circuit receives and processes the sensor signals and thereby generates a driving signal to a driving circuit so as to control the switch of the operation light bulb. When the control circuit detects abnormal sensor signals, it sends out a driving signal to turn off the switch of the operation light bulb, terminating the power output.