As for video surveillance system, once it is rare for people to use IR lamp. However, nowadays, crime rate is increasing, so infrared ray become more and more important for night surveillance. Infrared ray not only applied in some important places, such as bank vaults, oil depot, armory, library archives, heritage sector, jail, etc, but also applied in normal surveillance system. Even some residential quarter TV surveillance project also install IR water-proof camera (http://www.wision.net/megapixel-ip-cameras-c-1.html), which means people’s requirement for TV surveillance system project is more and more standard and higher and higher. And 24 hours continuous monitoring requirement tend to be a trend.
　　
Sometimes IR water-proof camera lamp will flash. And what is the reason? When illumination intensity is lower than threshold value, IR lamp will on. On the contrary IR lamp will off. The there comes IR lamp flashing, which is not for theory reason, but for products quality.

Then how to solve IR water-proof camera image flashing problem? According to test, flashing is aroused by low illumination. And there are two situations:

Flashing will appear for a while at twilight time. If customers do not want to add cost, then using normal chip will be fine.

If illumination is stable, then flashing must be solved:

(1). Modify threshold value
Among same model products, threshold value is also different. Changing another product may solve this problem.

(2). Adopting high quality low illumination camera chip and specified lense.

(3). Changing environment
Changing illumination intensity and IR water-proof installation angle.
　　
Video surveillance IR water-proof camera image problem is not hard to solve. If IR water-proof camera is well installed, then this problem will disappear.
　
When using IR lamp, users are suggested to read Users’ Manual carefully, especially matters needing attention and important for our life and device safety.