The integrating sphere will homogenize the light emitted by the light source so that the light on the inner surface of the sphere is consistent, so that the luminous flux of the light source is obtained by measuring the illuminance value per unit area by the inner surface area. It can be seen that the uniformity of light distribution is an important index to determine the accuracy of measurement results. Relative to the surrounding light uniform incandescent, energy-saving lamps, the LED because of its strong direction, and relatively special. This makes the LED direct light on the surface of the integrated sphere was unevenly distributed, directly lead to different direct reflection of the LED relative to the detector reflection characteristics are different. Because the position of the detector port and the setting of the baffle are fixed, the different reflection distributions are directly expressed as signal fluctuations. According to the verification...
Yunsun led lighting is a quality supplier in Shenzhen China. It not only pay attention to the quality, but also pay attention to Public welfare. Today, let's talk the effects of led lights flashing. 1. The impact on the human body: Will produce strain fatigue, blurred vision, and traditional headaches; Will lead to the onset of photosensitive epilepsy; Increased repetition among autistic children. 2. Impact on production workers Workers who require vision and vision will lead to a decline in performance; Workers who use or touch rotating machinery will have the effect of slowing down, stalling,or even reversing, which can lead to work accidents. 3. the impact on the athletes On the table tennis badminton and other high-speed movement of athletes, because every 1/100 seconds there will be 2ms dark, this light flash often lead to the direction of the ball to determine the mistakes and other issues. 4. The impact of literary photography ...
Chicago intends to replace 250,000 intelligent LED lights in the largest wisdom street program in the United States. Ameresco, a renewable energy company, will work with the World Bank program provider, Silver Spring Networks, in a four-year foundation building modernization program that will convert about 85 percent of Chicago's existing street lights into smart LED lights. According to Smart Cities World, the multi-stage infrastructure modernization program will begin in the summer of 2017. New LED street lamp is expected to save 50 to 75% less than existing street lamps. Silver Spring's IPv6 platform can control the switch lights in real-time depending on the actual requirements, as well as from remote monitoring for active maintenance and road failure. At least half of the installed LED lights will be assembled in the Chicago factory, at least 50 percent of the project will be employed by the Chicago citi...
As a lighting and ceiling fan perfect combination of lighting, fan lights not only has a high practicality, with the development of technology, its decorative is getting better and better, especially as in the hot summer, fan lights is the most Popular welcome. Advantages: 1. The current emphasis on energy-saving concept of environmental protection, compared to high power consumption of air conditioning, fan lamp power is low, low power consumption, the temperature does not exceed 30 degrees when the use of fan lights can achieve the effect of cooling heat, so practical Sex higher than the general lighting. Led fan lights 2. In order to meet the diverse needs of modern consumer demand, the fan lights in the appearance of a lot of improvements, the color from a single to the colorful, style from the ordinary cas to the European classical, French romantic, fresh pastoral, modern simple, etc., from simple The development of lighting tools fo...
Yunsun LED is professional indoor LED light manufacturer since 2004. Most of there LED bulb has international patented lens design. Following smart bluetooth RGB LED bulb: 1, led power: 5W 2, Speaker power: 3W 3, Bluetooth: 4.0 4, CCT: 2700k 5, Light Color: RGB 6, Lumen: 280LM 7, IP: IP20 Connect with bluetooth, controlled by App that has timing, color changing, play music.
LED light generated when the heat can not be derived, will make the LED junction temperature is too high, affecting the product life cycle, luminous efficiency, stability. LED heat dissipation: According to different packaging technology, cooling methods are different, and a variety of LED cooling method can be the next schematic: Cooling Path Description: (1) Heat from the air (2). Heat is exported directly from Systemcircuitboard (3). Derived heat from the gold wire (4). If eutectic and Flipchip process, thermal energy will be through the through-hole to the system circuit board and export LED die (Die) to gold, eutectic or flip chip connected to its substrate (SubstrateofLEDDie) to form a LED chip (chip), and then the LED chip fixed to the system board (Systemcircuitboard). Therefore, the possible cooling path of the LED is to heat directly from the air, or through the LED crystal substrate to the system circuit...
Yunsun LED is professional indoor LED light manufacturer since 2004. Most of there LED bulb has international patented lens design. Mini gold lens Following unique design mini golf bulb: 1, COB from Epistar light source, CRI95 is available. 2, International patented three-finger lens. Unique design 3, NXP from Philips dimming IC, 0-100% dimmable, match with traic dimmers in market. 4, Driver is designed by Yunsun to ensure quality. golf led bulb It can be used in supermaret, hotel and home.
LED filament is also called LED lamp post. In the past LED light source to achieve a certain degree of light intensity and light area,that need to install the lens and the like optical devices and will affecting the lighting effect, reduce the energy saving. LED filament is 360 ° full angle Luminous, large angle light and without lens, achieving three-dimensional light source, bringing unprecedented lighting experience. 1,360 ° light angle. 2, integrated high-voltage drive, the power factor to maximize power, lighting costs to minimize. 3, high-quality light source, color rendering index of 90 or more, light efficiency 110lm / W or more. 4, with a transparent substrate material with a new 360 ° molding packaging process. 5, fluorescent glue molding process, good quality. 6, the new light vision, feel the original ecology of the "incandescent" light environment. LED filament can be used in crystal chandeliers, candle lights, bulb lights, w...
Yunsun LED is a manufaturer of indoor LED lighting. Candle bulb is one of these popular bulb. 4W/5W led candle bulb is available, that equival 35w-50 incandescent. COB light source, the led we used is Epistar. from Taiwan 0-100% dimmable. The dimming IC driver is NXP from Philips, matched with leading and trailing edge traic dimmers. Yunsun LED has international patented lens : three finger lens. Its function is make the beam angle wider. "Quality is culture" that is Yunsun LED brand!
First, the voltage and current 1. Do not recommend the use of LED in parallel, because even the same model, the same batch of LED operating voltage has a certain difference, unless the current circuit. 2. In the installation of ultra-bright white LED, there must be anti-static facilities, because the electrostatic damage to the ultra-bright white LED even if the naked eye can not see, will reduce the service life. 3. If the LED operating voltage changes 0.1V, then the working current may change about 20mA. Under normal circumstances the use of series current limiting resistor, you can also use a simple constant voltage circuit, the purpose is to do automatic pressure limiting current limiting, to prevent damage to the LED. 4. The peak current of ordinary LED is 50 ~ 100mA, the reverse voltage is about 6V. When applying LED, pay attention to the design of the circuit when the peak voltage and current do not exceed this limit. (Ex...