The Hazards of Glare Light In the Stadium Sports Field

The Hazards of Glare Light In the Stadium Sports Field

1) The glare light is the biggest hazard factor to sports venue lighting!

In indoor badminton venues, table tennis venues, basketball, volleyball, and tennis venues, as well as in energy-saving lighting projects for sports venues. Stadium lighting design, whether it is a matrix uniform lighting design scheme or a standalone lighting mode. The color quality of stadium-dedicated lighting is the decisive physical factor determining the lighting quality of sports venues. Among them, the glare energy and glare effect of venue lighting are the biggest hazards to venue lighting.

Hazard manifestation 1: Sports lighting lights, dazzling, dazzling, and dazzling. Players only see a dazzling and dazzling light curtain, while they cannot see or see clearly the flying balls of table tennis and badminton in the air. The eyes cannot catch the flying ball in the air, focus on imaging and tracking the ball's flight trajectory, and swing the ball in the air.

Hazard manifestation 2: When the glaring energy of the stadium lighting is high and the degree of glare hazard is severe. The dazzling lighting in the venue can also cause visual pain. The greater the glare energy, the greater the visual tingling sensation.

Hazard manifestation 3: In sports venues use LED and metal halide lighting. High color, mild, and high-energy glare not only causes strong pain to the eyes. Even if the visual field of the eyes leaves the surface of the light, there will still be a brief period of visual blackness. Moreover, the time it takes for vision to return to normal visual perception is also related to the intensity of high color, mild, and high-energy glare. The higher the color temperature and the stronger the glare energy, the longer the visual recovery time.

2) Traditional sports floodlights with the greatest glare energy and glare hazard in the stadium lighting.

400W Metal-halide lamps and LED high-power energy-saving lamps are the two kinds of stadium lighting with the largest glare energy and the most serious glare damage. One reason is that the stadium lighting has glare energy. The greater the glare energy, the more severe the harm of glare. The second reason is the low matching between the radiation characteristics of the stadium lighting and the reflective characteristics of the lampshade. The lower the matching degree, the greater the harm of glare.

400W Metal-halide lamp has large glare energy and great harm. 400W metal halide lamp, from the 1970s and 1980s to the beginning of this century, is the mainstream sports lighting design for various sports venues. In the lighting projects of badminton and table tennis venues, many manufacturers and field lighting engineering companies are also the main promoters of venue lighting fixtures. For a time, in the lighting design of sports stadiums, 400W metal halide lamps were the most prominent venue lighting in the market.

However, the glare energy of 400W metal halide lamps is high, the quality of stadium lighting is low, and the harm of venue lighting glare is significant. It has a significant negative impact on the operational efficiency of sports venues.

1. Metal halide elements are added to the metal halide lamp. The luminescence mechanism is the characteristic spectral lines of metal atoms emitted by arc discharge under the excitation of an electric field. The nominal color temperature of metal halide lamps is not high, usually around 4500K. However, the spectral distribution deviates from the energy structure of the visible solar spectrum. The light color is slightly blue, containing more blue light. Low visible light ratio. The glare energy is high, and the degree of harm caused by glare is high.

2. 400W metal halide lamp is used as a stadium light, but the lighting quality of the venue is low. The glare energy is high, which is the most severe among the six types of sports lights used in venue lighting. The light is dazzling, dazzling, eye-shaking, and dazzling, causing glare hazards.

3. Venue lighting often occurs at multiple angles and positions on the court, where players only see a dazzling light curtain and cannot see flying badminton, table tennis, basketball, and other spheres in the air. The venue lighting is dazzling, dazzling, dazzling, and dazzling, making it impossible to catch the ball, track and locate it, and swing the ball.

4. Due to the high glare energy of the 400W metal halide lamp, players who play soccer may experience a brief visual blackout phenomenon even after their eyes leave the dazzling light curtain. And the visual recovery time is longer.

5. There have been many sports venue lighting contractors who have chosen to use 400W metal halide lamps in the lighting design of the stadium. However, due to the serious harm caused by the glare of stadium lighting, users do not recognize the case and cannot deliver the project.

3)Three types of venue lighting venue lights with varying glare energy and glare hazards.

T5 energy-saving lamp court row lamp, U-shaped spiral high-power energy-saving lamp, high-frequency Induction lamp. These three types of sports lights have the same principle of emission and are all gas-discharge photoluminescence stadium-specific lights. The luminescence mechanism is all three primary color phosphors, which absorb mercury discharge excitation spectra, convert and emit red, green, and blue light, and synthesize white light.

These three types of venue lights have different levels of glare energy and the degree of harm caused by glare. Its glare energy size and harm degree are determined by its own Spectral energy distribution structure. The glare energy is high, and the color of the light is bluish, with varying degrees of blue light and varying degrees of harm.

1. The spectral structure determines the glare energy. If the spectral distribution of these three kinds of stadium lights can be close to the structure of the solar visible spectrum, the light color quality will be excellent. If the visible light energy is high, the glare energy will be low, and the glare hazard will be small, or there will be no glare hazard.

If the spectral structure deviates from the distribution structure of the visible solar spectrum and leans towards the direction of shortwave blue light. The light will definitely have a bluish color, more blue light, and a high color temperature. The proportion of visible light energy will inevitably decrease, the glare energy will inevitably increase, and the venue lighting will produce glare hazards.

2. The quality and ratio of fluorescent powder in energy-saving fluorescent tubes determine the spectral structure. The research results of solid-state luminescence theory prove that the quality and ratio of fluorescent powder technology determine the spectral distribution structure. Mainly reflected in the quality and performance of monochromatic fluorescent powder and the rationality of the ratio structure of three primary color mixed fluorescent powder.

If monochromatic fluorescent powder, it is rare earth tricolor fluorescent powder. If the mix ratio structure of the three primary colors is scientific and reasonable. The spectral distribution structure of energy-saving fluorescent tubes will be reasonable, and the light color will be close to the energy distribution structure of the visible spectrum of sunlight. The glare energy of the stadium lighting is small, and the degree of glare hazard is small or there is no glare hazard.

If the monochromatic fluorescent powder is not a tricolor powder, Or it can be a three-tone fluorescent powder, but the quality is low, Or the ratio of the three primary colors mixed fluorescent powder is unreasonable. The spectral energy of energy-saving fluorescent tubes will inevitably deviate from the distribution structure of the visible spectrum of sunlight. Once the deviation direction is towards shortwave energy, there will definitely be glare energy and glare hazards. The more severe the deviation of spectral structure, the more severe the glare energy will be, and the more severe the harm of glare will be.

3. The output characteristics of electronic ballasts affect the spectral structure. The factors that affect the color quality of energy-saving fluorescent tubes, as well as the output characteristics of electronic ballasts. Essentially, it is an electronic ballast that exhibits the excitation and energy transport characteristics of the fluorescent tube plasma. This is mainly reflected in whether the output characteristics of the electronic ballast match the cathode characteristics of the fluorescent lamp tube.

If the characteristics of the two can match, the dedicated light spectrum for the stadium is conducive to approaching the distribution structure of sunlight and visible light. The better the matching, the higher the proximity.

If it cannot be matched, the spectral structure will deviate and glare energy will be generated. The lower the matching degree, the greater the deviation, and the greater the glare energy.

This means that high frequency Induction lamp has no electrode, and its matching degree is the magnetic coupling degree.

4. How to distinguish the magnitude of glare energy of three types of stadium lights. The research results of spectral theory indicate that the spectral structure of stadium-specific lights determines the magnitude of glare energy and also determines the color of the venue lights. Therefore, the glare energy of the stadium lights will be reflected through the color of the venue lights. At the same time, the color of sports lighting is described using color temperature. Therefore, the glare energy of the stadium lighting is also reflected by the color temperature of the light.

Based on this principle, we can distinguish the glare energy of the stadium lights by the color temperature and color of the stadium lights.

Firstly, the color and visual perception of stadium lighting with low glare energy and no glare hazards. The low glare energy is due to the spectral structure being close to the energy distribution of visible sunlight. Stadium lights with low glare energy have a high proportion of visible light and pure white color. The surface of the lamp body has a visual feeling that the glass is about to melt. The surface of the lamp body is bright and soft, and the light vision has a warm feeling. As bright and unobtrusive as sunlight. Even when looking directly at the surface of the lamp body, there is no tingling sensation of light. When the eyes leave the surface of the lamp body, the visual sensation immediately becomes normal, and there is no visual blackness in the eyes.

This type of stadium-specific light has a color equivalent to the sunlight from 10 am to 3 pm. The surface color temperature of its lighting is around 6000K. Used for sports venue lighting, without glare hazards. Visual brightness, clarity, and comfort. All kinds of spheres flying in the air can be seen, clearly seen, and accurately seen. The ball hits accurately. It can improve the specifications and grades of sports venues, and improve the economic benefits of venues.

Secondly, let's talk about the color and visual perception of stadium lighting with high glare energy and glare hazards. The stadium lighting with high glare energy is intuitively manifested as high color temperature, more blue light, and a light color that leans towards cyan.

When the color temperature of the lamp body is 6500K, the proportion of visible light will decrease, and the glare energy will be higher. The color of the lamp surface is cold white light. Although the light is white and bright, there is a sense of coldness and warmth in the vision. When looking directly at the surface of the lamp body, there is no obvious tingling sensation in the light, but there is a noticeable discomfort. When the eyes leave the surface of the lamp body, although there is no obvious visual black phenomenon, there is an instantaneous "visual flower" phenomenon, and then the visual sense can be normal.

This type of stadium lighting does not have a significant amount of glare energy and poses a risk of glare, which is not serious. However, the degree of harm caused by glare cannot be ignored. Used for venue lighting, players may tolerate the level of glare hazards but may experience visual discomfort. To some extent, it will affect the operational efficiency of sports venues.

When the color temperature of the lamp body is 6800K, some companies will further increase the color temperature to 6700K -6800K in order to pursue the surface brightness of the stadium lights. High-color temperature venue lighting significantly reduces visible light energy and increases the proportion of glare energy, resulting in high glare energy. The light color of the lamp body is not bright white, but rather slightly blue. Looking directly at the surface of the lamp, the light is harsh and the visual pain is obvious. When the eyes leave the surface of the lamp body, there is obvious visual blackness, and the time for visual restoration to normal is also relatively long.

This type of stadium light has high glare energy and poses great harm to glare. If used for venue lighting, the level of glare harm to players is usually unacceptable and intolerable. It will seriously affect the operation of sports venues.

Conclusion on the comparison of glare energy and hazard level of stadium-specific lighting.

Experience in lighting design for sports venues such as high-end indoor badminton and table tennis shows that:

The lighting of the stadium only has the color of sunlight, which is equivalent to sunlight from around 10 am to 3 pm, with a color temperature of around 6000K. Only then can the light color be pure white, bright and clear, and the color be pure. The Spectral energy distribution is close to the structure of solar visible light. A high proportion of visible light energy and low energy without glare is necessary to avoid glare hazards.

The lighting of the sports field is essential to ensure that the lighting is not dazzling, dazzling, dazzling, or dazzling. For flying badminton, table tennis, basketball, volleyball, and tennis balls, can be seen, seen clearly, and accurately. The visual image is clear, and the ball is played accurately and steadily.

Only the lighting of the sports hall can achieve high brightness, clarity, and comfort in terms of lighting quality and effectiveness. Only then can visual comfort, fatigue-free, and physical and mental pleasure be achieved.

In a word, to avoid the hazards of the glaring light in the stadium sports fields, it would be better to take the LED sports lights to replace the traditional old lamps, which help to benefit a lot to the players and spectators. Moreover, you deserve LED stadium lights with a higher energy saving, eco-friendly, longer lifespan, lower maintenance, easier management, etc.