We all know that light can be both harmful and beneficial for our vision and our overall health, especially sleeping. Natural sunlight contains both UV and blue light. We all know the dangers of UV or Ultra Violet light and we often wear sunglasses to prevent long term damage. But, what do we know about Blue light? Blue light, which is part of the visible light spectrum, reaches deeper into your eye and its cumulative effect can cause damage to your retina and it is connected to the development of age-related macular degeneration, worst of all, it makes your brain wide awake when you are about to go to bed. This is a must have software for those that works late into the night for a better eye protection, health and productivity.
↓ 01 – Iris | 720 hours for USD10 | Windows | Mac | Linux | Android | iOS | Chrome
Iris changes the color temperature of your display. Natural light is more blue, while most artificial light (including candlelight) is warmer. Incandescent bulbs, which we’re all used to, become more red in tone when you dim them. But newer LEDs and CFLs don’t – this includes the backlight on your monitor. If you’re a photographer, you’ve probably dealt with this, since pictures taken inside at night are always much more brown than photos outside. Iris also changes your display brightness in innovative way without PWM flickering. Iris Lite on the other hand is free.
↓ 02 – SunsetScreen | Free | Microsoft Windows
SunsetScreen is a free Windows app (for personal use) which helps take the glare off your your screen in the evening. Scientific research has shown that melatonin – the chemical the brain makes late in the day – is reduced when exposed to blue light. By tempering this blue light, it becomes easier to wind down properly at night, and thus have a more restful sleep. Whether you’re a morning lark or night owl, SunsetScreen allows you to set the time of the sunset and sunrise, so you can have full control over your sleep cycle.
↓ 03 – f.lux | Free | Windows | Mac | Linux | Android | iOS
f.lux makes your computer screen look like the room you’re in, all the time. When the sun sets, it makes your computer look like your indoor lights. In the morning, it makes things look like sunlight again. Tell f.lux what kind of lighting you have, and where you live. Then forget about it. f.lux will do the rest, automatically.
↓ 04 – Redshift | Free | Windows | Apple Mac | Linux
Redshift adjusts the color temperature according to the position of the sun. A different color temperature is set during night and daytime. During twilight and early morning, the color temperature transitions smoothly from night to daytime temperature to allow your eyes to slowly adapt. At night the color temperature should be set to match the lamps in your room. This is typically a low temperature at around 3000K-4000K (default is 3700K). During the day, the color temperature should match the light from outside, typically around 5500K-6500K (default is 5500K). The light has a higher temperature on an overcast day.
↓ 05 – PC SunScreen | £5.00 | Microsoft Windows
PC SunScreen is a powerful software app for PCs running Windows 7 or later, which automatically adjusts your screen colour to mimic natural daylight, gradually increasing the blue content from dawn to midday and then reducing it in the hours before you intend to go to bed. Research has shown that this can have a significant impact on sleep patterns.
The colour of natural daylight varies significantly throughout the day. At dawn and dusk, much of the blue content of sunlight is scattered resulting in the dramatic red skies in the early morning and at sunset. The blue content of sunlight reaches a peak close to midday.
↓ 06 – G.lux | Free | Google Chrome
G.lux is a free and unofficial variation of F.lux, a desktop app that automatically changes the color temperature of your monitor as the sun goes down. Monitors are typically daylight balanced, which can interfere with your sleep cycle when using them after sunset. G.lux is an alternative for those who are unable to install F.lux due to their operating system or administrator access settings, such as schools and workplaces. In addition, G.lux is currently the only F.lux alternative for millions of ChromeOS users worldwide.