Blue light page
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From this page, you can customize the amount of blue light emitted from your screen. Basically lower values and less blue light means better sleep and less eye strain. The Day and Night Light sliders may seem to have strange…
How to Install Iris on Linux Ubuntu
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Open the Downloads folder or the folder in which you downloaded Iris and locate the Iris archive file Right click on the archive file and click Extract here or Extract to some folder you prefer You will now the Iris AppImage…
How to Download Iris on Linux Ubuntu
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When the Download start click Save File then Ok When the download finish click Open containing folder
How to Install Iris on Linux Ubuntu based distros
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Install instructions You can see the install instructions for your Ubuntu Linux based distribution bellow Linux Mint Open the Downloads folder or the folder in which you downloaded Iris and locate the Iris archive file Right click on the archive file…
How to Install Iris on Linux Mint
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Open the Downloads folder or the folder in which you downloaded Iris and locate the Iris archive file Right click on the archive file and click Extract here or Extract to some folder you prefer You will now the Iris AppImage…
How to Download Iris on Linux Mint
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When the Download start click Save File then Ok When the download finish click Open containing folder
How to Download Iris on Linux Ubuntu based distros
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Download instructions You can see the download instructions for your Ubuntu Linux based distribution bellow Linux Mint When the Download start click Save File then Ok When the download finish click Open containing folder Linux Ubuntu When the Download start…
Night Shift Review (macOS)
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Night Shift is the Apple native integrated blue light reduction feature. Night Shift was first introduced on March 21, 2016 as part of the iOS 9.3. 1 year after Night Shift first arrived for iPhone on Mar 27, 2017 Apple finally added it…
What is the best Color temperature?
and What value reduces the most Blue light
A lot of users asked me what is the best value of Iris for blue light reduction. Well in this article I'm going to look at exactly this with measurements. This will be helpfull for users of other software products…
SunsetScreen Review (Windows)
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SunsetScreen is software for blue light reduction. Made by Daniel White in 2015 SunsetScreen is similar to f.lux, Redshift, Night Shift and to Iris blue light feature. Something which makes SunsetScreen better than f.lux is the ability to set custom…
Dark mode Review (Windows)
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In addition to Night Light you can also enable Dark mode or the Windows 10 Dark theme. The Settings application itself will immediately turn dark, as will many other “Universal Windows Platform” applications. However, it’s up to each developer…
Night light Review (Windows)
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Night light is the Microsoft blue light reduction feature. It comes built-in into Windows 10 Creators update. It was also available in the Windows 10 Insider preview before also. Night light is not available for Windows 7. If you want…
How Iris reduces PWM flicker?
Short explanation
Modern monitors use PWM to control the brightness of the screen. This is not problem at maximum brightness, but at low brightness it causes eye pain. Iris is fixing this by controlling the brightness with the video card and by…
How Iris reduces PWM flicker?
Medium size explanation
How modern monitors work? All monitor have some kind of flicker rate. This is normal, because the way semiconductors work requires them to turn ON and OFF in order to work properly. Every modern display uses some kind of LED,…
XYZ
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Color mapping experiments: what the average human sees In the late 1920s William David Wright and John Guild independently conducted a series of color matching experiments that mapped out all the colors the average human (meaning the average of the…
Color
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On the one hand, light comes from the sun or other radiant sources, and is refracted by mediums (water, the atmosphere, glass) and diffusely or specularly reflected by surfaces. On the other hand, color isn't out there in the world…
Circadian system Phase and Amplitude
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Phase Most people think of the circadian system ONLY in terms of phase - e.g., we would call a night owl "phase delayed" and an early bird "phase advanced". This means that their internal clock is offset from the solar…
F.lux 4 beta Review (Windows)
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The popular software for blue light reduction f.lux alternative to Iris has new major version with lots of new features and improvements. The new version is v4 and it's a major improvement over the several year old version v3. The…
Macular Pigment
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Macular pigment is comprised of Zeaxanthin and Lutein, which are found in the center of the macula (fovea) at a natural 2:1 ratio. MPOD (Macular Pigment Optical Density) is important for three specific reasons: 1. Low macular pigment is…
F.lux 3 Review (Windows)
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I'm still in the process of writing this article :)
Bigger, Brighter, Bluer-Better? Current light-emitting devices – adverse sleep properties and preventative strategies
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1Department of Children’s Sleep Medicine, Evelina London Children’s Sleep Medicine and King’s College London, St Thomas’ Hospital, London, UK 2Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK Objective: In an effort to enhance the efficiency, brightness, and…
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