What kind of light has the longest light wave ?

Classification of visible light

The electromagnetic wave with a wavelength of 380-780nm is visible light. Visible light can show a spectrum composed of seven colors of red, orange, yellow, green, cyan, blue and purple through the prism. The red light wave is the longest, 640-780nm; the purple light wave is the shortest, 380-430nm. Red 640-780nm, orange 640-610, yellow 610-530, green 505-525, blue 505-470, purple 470-380.

What is visible to the naked eye is a very short section of electromagnetic waves, which is called visible light from 0.4-0.76 microns. After the visible light is split by the prism, it becomes a light band composed of seven colors of red, orange, yellow, green, cyan, blue, and purple. This light band is called the spectrum. Among them, red light has the longest wavelength, and purple light has the shortest wavelength, and the wavelengths of other colors are in between.

the longest light wave red light

Red light, a medical term, uses a combination of visible light 600-700nm (more than 90%) and infrared light 700-4000nm (less than 10%) for external irradiation to produce important biological and therapeutic effects. Red light can treat many diseases clinically.

The absorption of red light by mitochondria in cells is the largest. After red light is irradiated, the catalase activity of mitochondria increases, which can increase cell metabolism; increase the glycogen content, increase protein synthesis and increase the decomposition of adenosine triphosphate, thereby strengthening the cell`s Regeneration, promotes the healing of wounds and ulcers; at the same time, it also increases the phagocytosis of white blood cells and improves the body's immune function. Therefore, a variety of diseases can be treated clinically.

The use of red light

The red light therapy instrument is a new type of phototherapy equipment that can be used in hospitals and homes. Its basic principle is to obtain a red visible light band mainly from 600 to 700 nm through a special filter. This band penetrates the human body deeply and has a better curative effect. good. The light spot is large (equivalent to hundreds of times of He-Ne laser), which provides a better treatment method for the treatment of some large-scale diseases. The light output is divided into "strong" and "weak" grades to adapt to patients of different physiques. The red light treatment instrument is manufactured for the characteristics of different selective absorption; it can promote the solidification of diseased tissue proteins in a relatively short time, improve local blood circulation, enhance immune function, promote local tissue metabolism, and produce a series of The benign reaction promotes the formation of new squamous epithelial cells, accelerates the absorption of exudates, and weakens muscle tension, so as to achieve the purpose of reducing swelling, anti-inflammatory, analgesic, eradicating erosive tissue, accelerating wound healing and even removing disease.

The main characteristics of the longest light wave

1. Multi-purpose: The original beam output is standard, and the original beam can be used for body surface treatment. It can be equipped with optical fiber output, which is more suitable for treatment of shallow cavity parts such as gynecology and ENT treatment;

2. Broad spectrum: The output wavelength is mainly from 600nm to 700nm, which is unmatched by the narrow wavelength of LED lasers;

3, high power: the optical output power is not less than 3W (equivalent to more than one hundred times of helium-neon laser);

4. Large spot: 100mm from the window greater than 120mm (equivalent to hundreds of times that of HeNe laser);

5. Microcomputer control circuit, digital time display control system, work automatically after setting the working time