In fact, the shadowless lamp can not be "shadowless." It only lightens the umbra, making the umbra unnoticeable. Shadows are formed by light shining on objects. The shadows everywhere on Earth are different. Observe the shadow under the electric light carefully, and also find that the middle of the shadow is particularly dark and slightly shallow around. The particularly dark part of the shadow is called the umbra, and the dark part of it is called the penumbra. These phenomena are all closely related to the linear propagation of light. If a cylindrical tea tube is placed on a table and a candle is lit next to it, the tea tube will cast a clear shadow. If two candles are lit next to a tea canister, two overlapping and non-conformable shadows will be formed. The two parts of the film were completely dark, and they were all black. This is the umbra. There is only one candle next to the umbra. The half shadow is half dark. If three or even four candles are ignited, the umbra part will gradually shrink, and the penumbra part will appear many levels. It is also the case that an object can generate shadows consisting of umbra and penumbra under electric light. Obviously, the larger the area of the luminous object, the smaller the umbra. If we place a candle around the tea tube, the umbra disappears completely, and the penumbra is too thin to see. Based on the above principles, scientists have made surgical shadowless lights. It arranges lights with great intensity on the lamp pan into a circle, and combines a large-area light source. In this way, light can be irradiated from different angles onto the operating table, which ensures that the surgical field has sufficient brightness and does not produce a distinct umbra, so it is called a shadowless lamp.
The surgical shadowless lamp is generally composed of single or multiple lamp holders, is fixed on the cantilever, and can be moved vertically or cyclically. The cantilever is usually connected to a fixed coupling device and can rotate around it. The shadowless lamp uses a sterilizable handle or a sterilized hoop (curved track) for flexible positioning, and has automatic braking and stopping functions to manipulate its positioning, maintaining an appropriate space above and around the surgical site. Shadowless fixtures can be placed on ceilings or fixed points on walls or on the ceiling.
Company Name:Vega Medical Equipment(Shanghai)
Contact: Laura duan
Company Add:Room 512, Lvdifangzhou Building, No. 258, North Of Yunhe Road, Fengxian District, Shanghai, China (Mainland)
Factory Add1:No.618,Jianyun Road,Meilin Village,Zhoupu Town,Pudong New Area,Shanghai,China
Factory Add2:No.688,Guangjian Road,Yangwang Industrial Zone,Fengxian District,Shanghai,China