Medical Endoscopy Cold Light Source

Cold light sources are the source of illumination for endoscopy. Modern light sources have abandoned the primitive method of direct illumination in the body cavity and use fiber-optic fibers to conduct light for illumination.

Benefits of using cold light sources:

1, strong brightness, the image obtained is clear, the light source is close to daylight, the image seen is more realistic. As the lighting bulb is not directly mounted on the endoscope, should be used instead of high-power, high-brightness light source lamps, such as halogen lamps, xenon lamps, etc.

2, the external light source using infrared filtering device, so that the illumination light into the body cavity becomes cold light, to avoid burning the mucosa of the digestive tract, while the endoscopy can be done close to the lesion observation, easy to find small lesions.

Why is cold light source called cold light source:

Cold light source has a "cold" word, so as the name implies, it sends out light is cold, in the medical field, this point can make the cold light source to get a clear picture at the same time to protect a variety of organs and tissues, cold light source principle is as follows: Cold light source refers to the inner surface of the aspheric reflector, the use of vacuum coating method, the multi-layer dielectric film (for example: with zinc sulfide, magnesium fluoride alternating multiple times the vacuum coating) plated to a certain thickness, cast to the aspheric reflector, the light in the highest heat of infrared light will be absorbed, and the remaining light is known as cold light.

Cold light source instrument is to realize this function of the instrument. Today's cold light source used in hospitals are mainly halogen cold light source, xenon lamp (referred to as xenon lamp) cold light source and LED cold light source 3 kinds, and xenon lamp cold light source by virtue of its outstanding light intensity, close to the sun's color temperature and the advantages of a longer service life was chosen by the major hospitals.

The working principle of LED cold light source:

The LED cold light source for medical endoscopes is mainly equipped with an electric controller in the housing, which is connected to the heat sink through the LED light source, and the heat sink is connected to the light cone sleeve through the lens assembly through the LED light source connected thereto, and the light cone sleeve extends to the end of the outer shell for the light cone thread interface, which is connected to the endoscope light guide cone interface, and the LED light source emits white cold light of adjustable brightness under the action of the LED driver, providing a cold light source for illuminating the endoscopes. The LED light source, under the action of the LED driver, emits white cold light with adjustable brightness to provide the endoscope with a cold light source for illumination.

It is characterized by small size, low energy consumption, low luminous heat, moisture-proof, shock-proof and easy operation. As it adopts a three-way power supply system of AC power supply, built-in battery power supply and external battery power supply, it can ensure the continuous provision of cold light source for endoscopes to ensure the continuous work of endoscopes.

The advantages of LED (Light Emitting Diode) light sources over traditional light sources are obvious: LEDs not only emit light with high efficiency but also have a long service life. the average service life of LED lamps is 30,000 hours: this means that routine maintenance costs are saved because bulb replacement is no longer required.

LEDs generate low heat, which has many advantages. There is no need to use a fan to cool the bulb and noise is avoided. Because no fan is required, LED cold light sources can have small, compact housings. This saves space on the cart or in the operating room.

LEDs have a color temperature of 6400 K and emit light close to daylight. This ensures lifelike colors for more precise tissue examination and diagnosis.