Many phones have OLED screens that are capable of emitting only red light, if a software filter is applied, so there's no need to develop specialized hardware.
Chances are that the reason blue-light filtering glasses and night-time mode aren't working for you is the same reason that it doesn't work for anyone; studies show that the color temperature of light doesn't affect sleep or circadian rhythm:
A red-only filter for your phone would be great for preserving night vision, though.
If you want help sleeping, getting lots of light in the morning is greatly beneficial, especially full-spectrum light, including infrared. It's also helpful to avoid alcohol and caffeine, especially so later in the day.
I agree, OLED can emit red light only. However, I am questioning whether that means there really is no need for red-only displays. As that mode on conventional displays (even on OLED) wastes pixels and is, more importantly, optional.
Comments
Many phones have OLED screens that are capable of emitting only red light, if a software filter is applied, so there's no need to develop specialized hardware.
Chances are that the reason blue-light filtering glasses and night-time mode aren't working for you is the same reason that it doesn't work for anyone; studies show that the color temperature of light doesn't affect sleep or circadian rhythm:
https://www.bbc.com/future/article/20260407-the-blue-light-f...
https://www.manchester.ac.uk/about/news/researchers-discover...
A red-only filter for your phone would be great for preserving night vision, though.
If you want help sleeping, getting lots of light in the morning is greatly beneficial, especially full-spectrum light, including infrared. It's also helpful to avoid alcohol and caffeine, especially so later in the day.
I agree, OLED can emit red light only. However, I am questioning whether that means there really is no need for red-only displays. As that mode on conventional displays (even on OLED) wastes pixels and is, more importantly, optional.
Me drinking 4 cups of coffee and blaming phone light for my sleep problems.