Why are the black and white images partially bright at night?
Solutions for nighttime infrared overexposure issues
If your baby monitor displays partially bright or overexposed areas in black and white mode during nighttime, this is typically caused by infrared ray reflection and concentration.
Understanding the Issue
The camera uses infrared (IR) illumination for night vision, which allows it to capture images in complete darkness. However, when IR rays reflect off nearby surfaces, they can create bright spots or overexposed areas in the image.
Main Cause: Infrared Reflection
Within the 2-meter space range of the camera's perspective, there should be no obstructions or walls, otherwise infrared rays will gather here and cause overexposure.
Why this happens:
- IR rays emitted by the camera bounce off nearby surfaces
- Concentrated IR light reflects back into the camera lens
- The camera sensor becomes overwhelmed by the reflected light
- Results in bright white spots or partially overexposed areas
Solution: Maintain Clear Space
To prevent infrared overexposure, ensure proper camera placement:
Distance requirements:
- Keep at least 2 meters (6.5 feet) of clear space in front of the camera
- Avoid pointing the camera directly at walls or large objects
- Remove any obstructions within the camera's field of view
- Ensure the camera isn't mounted in corners facing nearby walls
Optimal placement tips:
- Mount camera with open space ahead
- Angle camera away from walls and reflective surfaces
- Position to overlook the entire room rather than focusing on corners
- Avoid areas with white or highly reflective surfaces directly in view
Testing the placement:
- Install camera in desired location
- Switch to night vision mode
- Check for bright spots or overexposure
- Adjust camera angle or position if needed
- Verify image quality after repositioning
Additional Considerations
Reflective materials to avoid:
- White walls or ceilings (within 2m)
- Mirrors or glass surfaces
- Glossy furniture or decorations
- Metallic objects or shiny surfaces
Alternative solutions:
- Adjust camera mounting height
- Change camera viewing angle
- Use a different mounting location
- Ensure room has some depth in the camera's view
When to Seek Support
If overexposure issues persist after adjusting camera placement:
- The camera may have IR LED intensity problems
- Hardware calibration may be needed
- Contact customer service for technical assistance
- Consider warranty service if camera is defective
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