Light Output (光線輸出)
Total lumens of output, measured in an integrating sphere after the light has been on for 30-120 seconds. 30 seconds gives a little time for the LED to get hot and the battery voltage to sag which will usually result in a lower output number.
Runtime (續航力)
The amount of continuous runtime (in minutes) until the light output drops to 10% of its original value (measured 30 seconds after turning the light on).
由開始 (開燈的30秒後開始量度) 至光輸出下降至原本的10%的連續工作時間 (以分鐘計)。
This test is done using the batteries included with the flashlight. If no batteries are included, the test is done using the manufacturer-recommended batteries.
這測試以手電筒附有的電池實行。如沒附有電池，這測試則以廠商建議的電池進行。
The test is done in an integrating sphere just like the lumen test with light output measured every 15 minutes. 10% of brightness probably gives inflated runtime numbers. In the past, some testers used 50% to be a little more practical, but with most batteries, the drop-off is usually pretty quick and the time between 50% and 10% usually is not long.
Impact Resistance (抗摔落)
Height, in meters, from which the light (including batteries) can be dropped onto concrete without cracking or breaking and still function. Lights are dropped while in the Off position and allowed to come to rest before inspecting for damage. For ratings over 1 meter, each sample light is dropped six times with different faces towards the ground.
不會吧..........
