PISEN teach you according to marine Wang Qiang light flashlight irradiation distance selected fixtures

1, close illumination (less than 1 m, with surrounding reflective objects) recommend more LED products, suitable for camp lights, headlights and other writing at close range, repair, meals, etc., but does not advocate better lamp, LED work Voltage at 3V, so a lot of flashlight, headlamp are to promote the use 3AAA batteries, 20-30 lamp will be close to the current load limit, more easy to damage the battery, reducing lighting time, resulting brightness enhancement is not obvious, think five more than enough, extra LED will only increase the chance of failure. 2, the distance (2 meters to 50 meters) high power LED products, especially products for good 3W, 3W chip also recognized the company's products in the lumen of the most sophisticated, to buy a 80 lumens of brightness, low battery consumption , especially for night travel. If you use a good product, concentrating well, it can shine very far. The use of time you can use a simple calculation in junior high school to master knowledge of electronics, such as using a 3.6V 2000ma battery-driven operating current of about 1A is approximately 3W of power to run, so you can have two hours of use, and In fact, the decrease with voltage and current will be significantly decreased, while the decrease in brightness are not so obvious, this is a great advantage of LED, unless the driver circuit remains at full power, or the actual use of time much longer than the calculated value to above 1000ma battery, for example, the actual use of time may be greater than four hours. Xenon lamp products, such products in high-end products that might otherwise be used to provide real army, police use, with the state's money, so it is not too much to consider the cost of consumption, for example, the United States SUREFIRE 6P, Use two CR123A non-rechargeable batteries, light bulbs adjusted heel cup is one, must be completely replaced, providing 60 lumens (manufacturers nominal conservative, and control the country, can be considered 120 lumens), one hour of continuous lighting, light bulbs life of 15 hours, was not the average person can afford. If the pursuit of small size with absolute brightness, choose it now. Dongguan City Sheng Lighting Co., Ltd. is a focus on industrial lighting manufacturers, specializing in portable explosion-proof flashlight, Ocean King jw7622, ??LED moving proof lights, moving lights, railway signal, camera flashlight research and development, production and sale. For more details, please consult Dongguan City Lighting Co., Ltd. wins! http://www.ps0769.cn