Blåfilter

Blåfilter, also known as blue light filters, are technologies designed to reduce the amount of blue light emitted by digital screens. Blue light is a high-energy visible light spectrum that is present in sunlight and also emitted by electronic devices like smartphones, tablets, and computer monitors. While blue light plays a role in regulating the sleep-wake cycle, excessive exposure, particularly in the evening, has been associated with potential negative effects.

These filters can be implemented in several ways. Software-based filters, often found in operating system settings or third-party applications, can adjust the color temperature of the screen, making it appear warmer by reducing blue hues. Hardware-based filters involve physical screen protectors or coatings applied to the display itself that block or reflect a portion of the blue light. Some manufacturers also integrate blue light filtering technology directly into the display panels of their devices.

The primary purported benefit of using blåfilter is to mitigate potential eye strain and sleep disturbances associated with prolonged screen time. By reducing blue light exposure, especially before bedtime, it is suggested that the body's natural melatonin production can be less disrupted, potentially leading to improved sleep quality. Research into the long-term effects of blue light and the efficacy of filters is ongoing.