Is actually Lumen And What is Lumen LED Flashlight
When we buy led flashlights,we always hear the word'lumen',then what is :lumen? what is Lumen led flashlight?and what is the relationship between lumen and led flashlight?
'Lumen' is a Flux units.Simply put, refers to the brightness which demonstrated by the flashlight in one meter (1 meter = 1 meter)away. For example,an ordinary 40-watt incandescent bulb, the Luminous efficiency concerns 10 lumens per watt, so discover send 400 lumens of light. a 220-volt 40-watt incandescent lamp, the luminous flux is 340 lumens.'Flux'is also called brightness,the unit is lumen.
Now when an individual looks for an lumen LED flashlight device, he has to look for these that have a large number of lumens to get overall brightness in relation to distance and area covered with equal brightness.
The lumen value in LED flash light varies by models. When choosing an lumenLED flashlight, its practical use would decide variety of lumens needed for the customer.Since total brightness is measured in lumens, garden of 10 to 100 lumens is normal. Certainly ,9oo lumen led flashlight furthermore popular.When you choose flashlight,you should in response to the actual conditions of yourself.
Today,there are so many wholesale flashlights your market,but so frequently develops after don't know how to distinguish the traditional flashlight and LED flashlight?Here are some tips for you choose led flashlights.
First,look at the car battery.There are two regarding batteries ,one kind is ordinary batteries and the other kind is lithium, although lithium is rechargeable battery, but life is short,only about 2 years. The life of LED is about 10 years,you can choose according to far more situation.
Second,look at lights.When bulb goes out ,naked eye isn't easy to distinguish between good and bad, it can be distinguished in the lighting of the light fixture.
Third,waterproof. A good LED flashlight additionally a waterproof flashlight,that is to say,it has waterproof function. Seismic performance is good,namely ruggedness.
Article resource: http://www.enwholesale.com