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02Aug 2013

LED lamp life span test: Test objects: LED lamps (lamps with LED Driver, finished products). Test method: 1) Put 5pcs LED lights under environment temperature of 25℃, and test the initial lumen, power consume, color temperature and other parameters in rated input voltage; 2) After the testing, put the samples in a temperature of 25℃, […]

25Jul 2013

LED lamp Vibration testing Test objects: LED lamps (lamps with LED Driver, finished products). Test method: 1) Well packaged 5pcs LED lamps, and put on the vibration test bench; 2) Set the vibration machine speed to 300 rev /min, and vibrating amplitude to 2.54 cm, starts vibrating instrument; 3) According to the above method, vibrate […]

20Jul 2013

The constant temperature and humidity test: Test objects: LED lamps (lamps with LED Driver, finished products). Test method: 1) Put 5pcs LED bulbs in a constant temperature and humidity chamber, set relative humidity to 95%, and temperature to 45℃; 2) Light up the LED bulbs in rated input voltage for 48 hours; 3) Take out […]

12Jul 2013

The temperature cycling test: Test objects: LED lamps (lamps with LED Driver, finished products). Test method: 1) Put 5pcs LED lights in high and low temperature chamber, and this chamber can adjust temperature changing rate. 2) Input the rated voltage to the LED lights; 3) Set temperature range from -10℃ to 50℃, temperature speed rate: […]

08Jul 2013

Normal temperature, pressure and impact test: Test objects: LED lamps (lamps with LED Driver, finished products). Test method: 1) Put 5pcs LED lights under environment temperature of 25℃; 2) Input the rated voltage to the LED lighting; 3) Power on for 72 hours, and observe whether there is damage to the lamp, thermal deformation of […]

05Jul 2013

Low pressure, temperature and impact test Test objects: LED lamps (lamps with LED Driver, finished products). Test method: 1) Put 5pcs LED lights under environment temperature of -15℃; 2) Transfer input voltage to 0.9 times of LED lamp rated voltage by transformer. 3) Power on for 24 hours, and observe whether there is damage to […]

01Jul 2013

Test objects: LED lamps (lamps with LED Driver, finished products). Test method: 1) Put 5pcs LED lamps in a oven with temperature of 60℃; 2) Transfer input voltage to 1.1 times of LED light rated voltage by transformer. 3) Power on for 24 hours, and observe whether there is damage to the lamp, thermal deformation […]

05Jul 2010
wavelength

In physics wavelength is the distance between repeating units of a propagating wave of a given frequency. It is commonly designated by the Greek letter lambda (λ). Examples of wave-like phenomena are light, water waves, and sound waves. The wavelength is related to the frequency by the formula: wavelength = wave speed / frequency. Wavelength […]

28Jun 2010

Luminous intensity is the radiating power of a source of light in a particular direction, weighted with the spectral sensitivity of the eye. Measuring luminous intensity in candela over the entire solid angle in Sterad (SR), one receives the light-current in lumens (lm). In photometry, luminous intensity is a measure of the wavelength-weighted power emitted […]

22Jun 2010

Luminous Flux (Φv) is energy per unit time (dQ/dt) that is radiated from a source over visible wavelengths. More specifically, it is energy radiated over wavelengths sensitive to the human eye, from about 330 nm to 780 nm. Thus, luminous flux is a weighted average of the Radiant Flux in the visible spectrum. It is […]