The shadowless operating lamp is used to illuminate the surgical site and observe small, low-contrast objects at different depths in the incision and body cavity. Because the operator’s head, hands and instruments may cause interference shadows on the surgical site, the shadowless operating lamp should be designed to eliminate shadows as much as possible and minimize color distortion.
In addition, the shadowless lamp must be able to continue working for a long time without emitting excessive heat, because overheating will make the operator uncomfortable and make the arrangement in the surgical area boring. The shadowless operating lamp is one of the important medical equipment in the operating room. The shadowless operating lamp is generally composed of a single or multiple lamp heads. The lamp head is fixed on the cantilever, and the cantilever is usually connected to a fixed coupler.
It can rotate around it and has automatic braking and stopping functions. The handle with disinfection and sterilization function can be positioned flexibly. In this way, it is convenient for the doctor to adjust the position of the light source according to the specific situation during the operation. During the operation, because the doctor’s head, hands and instruments may cause interference shadows on the surgical site.
Therefore, shadowless operating lamps are needed to help eliminate these dark shadows, and reduce color distortion to a minimum, so as to avoid interfering with the doctor’s judgment. Under normal circumstances, when light shines on an opaque object, a shadow will be produced. The darker part in the middle is called the umbra, and the gradually lighter part around it is called the penumbra.
