Method and device for anti-reversible-light shooting

Method and device for anti-reversible-light shooting

  • CN 101,604,111 B
  • Filed: 06/15/2009
  • Issued: 01/02/2013
  • Est. Priority Date: 06/15/2009
  • Status: Active Grant
First Claim
Patent Images

1. one kind is utilized auxiliary light to prevent the method that backlight is photographed, it is characterized in that:

  • utilize the synchronous stroboscopic of exposure cycle of stroboscopic pulse xenon lamp and the video camera auxiliary light that is used as photographing, realize adequate illumination, simultaneously utilization is covered in outside light valve or the inside shutter of video camera and the flash synchronization unlatching of stroboscopic pulse xenon lamp before the camera lens, and close in other period, the stroboscopic pulse xenon lamp works in the stroboscopic pulse illumination mode, its mean flow rate is equal to common auxiliary light modulation, and the cycle dutycycle of flash pulse and light valve and shutter opening printing opacity is little, the stroboscopic pulse xenon lamp is 50 times to 400 times of mean flow rate in the moment brightness of glistening, light valve and shutter are closed condition in the most of the time, thereby effectively eliminated the backlight effect, reached and under the backlight environment, shoot the purpose of knowing effect.

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