General knowledge about dysprosium lamps

1. What are the differences between tungsten lamps and dysprosium lamps?

Tungsten lamps are incandescent lamps made of tungsten filament.

Tungsten lamps can produce a continuous spectrum and are used in the visible spectrum region of 400~780nm. As a visible light source in spectrophotometers.

Its spectral effective area can extend to 3μm, so it is also used as a light source in the near-infrared region. Edison began experiments to reform the arc lamp in 1877, proposing to divide the current and convert the arc lamp into a white light lamp.

This test needs to be done to a satisfactory level. It is necessary to find a substance that can burn to white heat to make a filament. This filament must withstand burning at a temperature of 2,000 degrees for more than 1,000 hours.

At the same time, it should be simple to use, able to withstand the bumps of daily use, and low in price. It should also ensure that the turning on and off of one lamp does not affect the turning on and off of any other lamp, and maintain the relative independence of each lamp. In order to choose this kind of lamp. The dysprosium lamp is a high-intensity gas discharge lamp. It is a new type of gas discharge light source with high luminous efficiency (above 75lm/w), high color rendering (color index above 80), and long life. It is a type of metal halide lamp. , it uses the filled dysprosium iodide, thallium iodide, mercury and other substances to emit its unique dense spectrum, which is very close to the solar spectrum, thereby greatly improving the luminous efficiency and color rendering of the lamp.

2. What is the difference between tungsten lamps and dysprosium lamps?

The difference between tungsten lamps and dysprosium lamps: 1. The luminous colors are different. Dysprosium lamps are white light, while tungsten lamps are Yellow light.

2. Different applications. Among current lighting fixtures, tungsten lamps are used less and dysprosium lamps are used more. Tungsten lights are often used in costume dramas, and for night scenes, tungsten lights are usually used.

3. The color temperature of dysprosium lamps is different. The temperature is about 5600. Of course, it will fluctuate up and down because of the aging of the bulb and so on! But they are probably around 5600K! The color temperature of tungsten lamp is 3200K! This is the biggest difference between the two! 4. Different models are subject to ARRI lamps. Dysprosium lamps include: 200W, 575W, 1200W, 2500W, 4000W, 6000W, 12000W. There are also new PAR lamps, which also belong to the dysprosium lamp category, 200PAR, 575PAR, 1200PAR, 4000PAR, 6000PAR,12000PAR.

3. The problem of screen flickering is mainly for the use of dysprosium lamps for lighting. So what is a dysprosium lamp?

A dysprosium lamp is a high-intensity gas discharge lamp with A new type of gas discharge light source with high luminous efficiency (above 75lm/w), high color rendering (color index above 80), and long life. It is a type of metal halide lamp. It uses filled dysprosium iodide and submersible iodide. Substances such as mercury and mercury emit their own unique dense spectrum, which is very close to the solar spectrum, thus greatly improving the luminous efficiency and color rendering of the lamp.

Dysprosium lamps come in various shapes such as spherical, tube, and ellipsoid to meet the needs of different uses. Corresponding ballasts and triggers are required for use. In 1886, the Frenchman Bois Baudelaire successfully separated holmium into two elements. One is still called holmium, while the other is named dysprosium (dysprosium) based on the meaning of "difficult to obtain" from holmium.

In the process of film shooting, dysprosium lamps are often used as outdoor lighting, and their color temperature is close to that of daylight, which is 5600°K. Because this type of lamp is a strobe lamp, the flashing frequency is synchronized with the mains power. In China, 50Hz. In other words, the light emitted by this type of lamp changes light and dark 50 times in one second.

Our human eyes are relatively slow and cannot detect flickering. The camera is different. Each frame it captures is a moment.

If the light brightness of each frame is consistent, there will be no flickering; if the brightness is inconsistent, there will naturally be light and dark changes during playback, and "flickering" will occur. .

4. Does placing a dysprosium lamp in the room have any impact on human health?

Yes, dysprosium is a metal separated from holmium. This metal is very small, so Lamps made from it are relatively expensive, but the color rendering of the lamps made from it is indeed very good, and because the spectrum it produces is similar to the spectrum of sunlight, the light efficiency and brightness are higher than other lamps. There are many, and the dysprosium lamps currently on the market can be roughly divided into two categories. One is daylight-colored dysprosium lamps, which are mainly used in factories, gymnasiums, shopping malls, exhibition halls, construction sites and other large public places that require high brightness. Special occasions; Another type of dysprosium lamp is the reflective daylight-colored dysprosium lamp. This type of dysprosium lamp has high radiation intensity, so it is mainly used as an artificial radiation source in greenhouses, greenhouses and other places.

If the dysprosium lamp is used improperly, the ultraviolet rays it releases will cause serious damage to human eyes to a large extent. In order to ensure our health, when we buy a dysprosium lamp, we must choose a qualified dysprosium lamp, hang it at a certain height from people, and regularly check whether the dysprosium lamp can be used normally.

When we buy dysprosium lamps, we must correctly understand its harm to the human body, and we must be particularly careful when using them. Anyway, safety comes first.

I hope it can help you and hope you will adopt it.