In fact, most of the current LED lighting problems are caused by the mismatch between the control system and the light source electrical appliances, which has become a common problem in the industry, and the diversification of LEDs also poses higher challenges to the control system. Because the light-emitting principle of LED is different from traditional lighting, it relies on PN junction to emit light.… Read More
Hockey is one of the oldest sports in the world. Hockey is an official event of the Olympic Games and the Asian Games, which is highly valued by governments and countries at all levels. Hockey has only been developed in China for more than 30 years. For most Chinese audiences, this sport is still relatively unfamiliar.… Read More
Ice Hockey is a collective competitive sport in which ice skates and hockey sticks are used as tools to play against each other on ice. It is composed of men’s and women’s events. It is an independent winter sports event in the international sports taxonomy.
Ice hockey stadium lighting design—the stadium lighting design relies on the overall arrangement of light to comfortably serve the different perspectives of athletes, referees and spectators.… Read More
At present, the light decay of white LED in the market may be one of the most important problems in the development of civil lighting. There are two main factors for LED light decay:
first, the quality of LED products:
1) The quality of LED chips is not good, and the brightness decay is fast.
2) There are some defects in the production process.… Read More
The parking lot is the place for parking vehicles in the city. At present, the population of Hainan city is increasing rapidly, and the number of motor vehicles is increasing rapidly. Driving shopping has become the fashion of car owners. Therefore, supermarket parking lots are increasingly developing to underground garages. But the lighting energy consumption of parking lot is the main component of the operating cost of the whole underground parking lot.… Read More
The solar street light has many advantages, so it can be widely installed and used, such as no electricity fees, save energy and so on. It’s important that we need to purchase a stable quality solar street light to get a stable return.
Then let’s analyze what factors will affect the life of a solar street light.… Read More
Flicker is a kind of light instability that occurs due to frequency. Light source flicker phenomenon means that the light emitted by the light source changes rapidly and repeatedly over time, making the light source beating and unstable. Studies have shown that light source flickering is closely related to neurological diseases such as migraine, headache, autism, visual fatigue and discomfort.… Read More
The lighting measurement grid of Major League Baseball (MLB) is shown in Figure 1
Figure 1 Major League Baseball (MLB) field lighting measurement grid
The lighting requirement index of Major League Baseball (MLB) field illumination is shown in the table below
Major League Baseball (MLB) field level illumination requirements (Table 1)
| Horizontal illumination | Vertical illuminance | Lamp performance | Glare | ||||||
| / | average illumination | Illumination uniformity | Midfield Camera (Position 1) | Infield Camera (Position 2-6) | / | CCT | CRI | Luminous flux | / |
| area | Ehave(Fc) | U(Max：min) | Evave（Fc） | U（Max：min） | Tk | Ra | Lm | UGR | |
| Infield | 250 | 1.1:1 | 150 | 200 | 1.5:1 | 5000~5700 | >80 | 100,000 lx the max | ≤40 |
| Midfield | 225 | 1.2:1 | 175 | 175 | |||||
| Outfield | 200 | 1.3:1 | 200 | 150 | |||||
| Bullpen | 100 | 1.5:1 | |||||||
| Auditorium | 125 | 2:1 | |||||||
| Note: 1fc≈10.76 lx | |||||||||
Major League Baseball (MLB) field camera location requirements are shown in Table 2 and Figure 2.… Read More
The color rendering ability of a light source to an object is called color rendering, which is compared with the appearance of the object under the same color temperature or reference light source (incandescent lamp or painting light). The spectral content emitted by the light determines the light color of the light source, but the same light color can be composed of many, a few or even only two monochromatic light waves, and the color rendering of each color is also very different.… Read More
LED video light is a camera light supplement device with LED light-emitting diode as the luminous body. It is divided into high-power LED video light and low-power LED video light.
LED lighting has high efficiency, low voltage, small size, long life, fast response, strong shock resistance, energy saving and environmental protection.… Read More