1 Introduction Among the main photoelectric parameters of the LED display , there are brightness, viewing angle, uniformity, contrast, refresh frequency, etc., of course, there are some key parameters such as gray level, brightness level and primary color wavelength error. The luminance of the primary color is divided by the intensity, which is the gray level. The higher the gray level that the display can produce, the more colors and image levels are displayed. In a digitizing system, the ability of gray level control is represented by the number of gray levels, which is the number of gray levels that can be controlled. There have been many discussions on this aspect. The same analysis of brightness level and primary color wavelength error has appeared in many literatures. Due to space limitations, this article will not go into details here. In the following, the paper starts from the main parameters such as brightness, viewing angle, uniformity, contrast and refresh frequency of the above display screen, and briefly explains the relationship between them. It can be seen that when the brightness of a certain direction (such as the normal direction) is increased, the brightness of other directions will be weakened, and the viewing angle index of the entire screen is lowered, and the viewing range is reduced. In addition, the use environment of LED display screens varies widely, and the illumination of the environment is different, which will have a great influence on the viewing effect of the entire screen. According to (2-1), under the conditions of large environmental illumination and constant cost, only strengthen The brightness in a particular direction guarantees the brightness index of the screen, sacrificing the angle of view; but conversely, under the condition of small ambient illumination, it is not necessary to overemphasize the brightness in a specific direction, but affects the actual photoelectric performance of the entire screen. This also results in unrealistic comparisons in bidding, and the users do not understand this, resulting in the “maximum brightness†required in many bids is often much higher than the actual needs. Based on the above reasons, it is recommended that in order to guide users to correctly understand the "maximum brightness" of LED display, it is necessary for the industry to give a guide: in some occasions, under different illumination conditions, the perspective should be guaranteed. Determine the brightness index (that is, what value of the brightness of the LED display can meet the requirements), do not ignore the visual effect, only emphasize the brightness indicator, so that the screen is made, unless the cost is increased, using a very bright LED light (a consequence is that The viewing range is large, but the front side cannot be viewed because it is too bright; otherwise, since the viewing range of the screen is small, it may become a low-grade display. LED Garden Light is used for lawn around the lighting facilities, is also an important landscape facilities. With its unique design, the soft lights add to the safety of the urban green landscape
LED Garden light function: Beautiful, and easy to install, decorative and strong, can be used for parks, garden villas, pedestrian street, parking lot, square and other public places lawn green landscape area. Spacing between 6 to 10 meters is appropriate. There are some led garden light made of chic small animals or plants and other simulation modeling, placed in the lawn, as if the sculpture as beautiful.
led garden light features:
1, high brightness: LED garden light selection of high-power LED, 5050 patch light source to provide adequate energy.
Outdoor LED Garden Light,LED Garden Light,Remote Control Garden Lights Shenzhen Mingxue Optoelectronics CO.,Ltd , https://www.mingxueled.com
2, the relationship between the brightness of the LED display and the viewing angle
The luminous intensity of the LED display screen is determined. Since the display screen is not a Lange illuminator, in general, the distribution of the illuminating light is approximately the same as the pixel illuminating distribution of the LED. (2-1)
2, high quality: LED garden light selection of anti-corrosion, anti-aging aging of the manufacturing.
3, high life: can reach more than 100,000 hours.
4, energy efficient: LED garden lighting, energy saving.
5, high security: LED garden light is a low-voltage products, the use of DC 12V or 24V power supply, safe and harmless, for children, pedestrians and animals for effective protection. Light body with high strength structure design, wind, anti-external strength is high.
6, easy installation: easy installation, independent power supply, without erection or embedded transmission lines, construction is simple, low construction costs.
