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Four Issues of Infrared Night Vision Car DVR

  • Author:Jennifer
  • Source:www.tigloncn.com
  • Release on :2014-07-18
 

Infrared night vision car DVR is one type of car DVRs, designed for night shooting and shooting in low light conditions. This kind dashboard camera mainly makes sure videos shot at night clear, so it’s very hot. However, sometimes infrared night vision car DVR perhaps has four problems.

The first problem is focus shift. Due to different wavelengths of visible light and infrared light, imaging focus isn’t in a plane, which leads to clear image under visible light in daytime, fuzzy image under condition of infrared light at night, or contrary situation. How to solve this issue? What you can do is to use automatic focusing all-in-one car DVR, adopt special IR lens without offset, or use special tools to adjust the lens.

The second problem is color. For colorized dashboard camera, infrared light actually is veiling glare that affects video resolution and real color; as a result, colorized dashboard camera is usually configured with a filter to prevent infrared light from imaging. Two approaches can be used to solve this issue. One is to switch the filter to let infrared light come in or not, the other is to open a special channel for infrared light.

The third problem is sensitivity. Sensitivity is the central part of car DVR’s infrared night vision monitoring. The higher sensitivity, the stronger infrared induction ability. Hence in spite of high price, users should choose those dashboard cameras with high sensitivity.

The fourth issue is visual range. Some inferior infrared night vision car DVR has small visual range, as a consequence, video effect is not good.

When buying a infrared night vision car DVR, it’s proposed that users choose good-quality ones.