Why my desk lamp light will keep the cell phone camera shows and white flashing light and shade stripes
This is because, you are the light source is not continuous, it is actually in the rapid flashing, just flicker frequency too quickly, the human eye cannot perceive, so feeling is always in the light. Mobile phones, unlike the human eye, sensors are refresh regularly, when the refresh rate and light stroboscopic rate when there is a mathematical relationship, you will see the stripes, when the refresh rate and blink rate just appear a integer times, stripe can rest on the screen. This and use digital camera CRT screen will appear flashing is the same.
Is PWM pulse width modulation technology, that is, by adjusting the light of a period of time to adjust the brightness, if the PWM frequency is high enough, can people see not to come out. Twinkle is harmful to the eyes, I only know that frequency should be no problem, because the fluorescent lamp is high frequency electronic ballasts.
Mobile phone in the low frequency of light is there will be a ripple, over a period of time.
To the naked eye for frequency fast things cannot be directly observed. Such as mosquito flap wings we cannot directly observe. Mobile phone camera is more than 25 frames per second picture taken, so we can see
For the sake of your eye health, or with a fluorescent lamp. Is your desk lamp LED lights, if it is LED lights advise you don't use.
