LEDs behind a TV, often called bias lighting, work by emitting light that surrounds the TV screen, making the surrounding area appear less dark. This reduces eye strain and improves perceived contrast.
Here's a breakdown of how they function:
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Light Emission: LEDs (Light Emitting Diodes) are semiconductors that emit light when an electric current passes through them. These LEDs are typically mounted on a strip or panel that adheres to the back of the TV.
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Placement: The LED strips are usually placed around the perimeter of the TV's back panel. This ensures even distribution of light onto the wall behind the TV.
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Purpose:
- Reduced Eye Strain: By adding ambient light, the LEDs reduce the stark contrast between the bright TV screen and the dark room. This makes it easier for your eyes to adjust and reduces fatigue.
- Improved Perceived Contrast: The surrounding light tricks your eyes into perceiving deeper blacks and more vibrant colors on the TV screen.
- Enhanced Viewing Experience: Many people find that bias lighting creates a more immersive and comfortable viewing experience.
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Power Source: The LEDs are usually powered via USB, either directly from the TV or from a separate power adapter.
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Color and Brightness Adjustment: Many LED bias lighting kits allow you to adjust the color and brightness of the LEDs to suit your preferences and the ambient lighting conditions in your room. Some even offer dynamic color changing modes that sync with the content displayed on the TV.
In essence, LEDs behind a TV function as bias lighting, strategically placed to illuminate the wall behind the display, diminishing the contrast between the bright screen and the darker surroundings. This creates a more visually comfortable and subjectively improved viewing experience.
