4 ms·
By red filter, do you mean something that keeps red and blocks the rest, or the other way around?
by ddebernardy 8y ago
By red filter, do you mean something that keeps red and blocks the rest, or the other way around?
- masterleep 8y agoThe former.
- TeMPOraL 8y agoApplications suitable for usage at night will have a mode that draws everything in black and red. It's based on the phenomenon that red light still triggers the cones (color-sensitive receptors in our eyes), while not overwhelming the rods (light-sensitive receptors), letting us use illumination (in this case for information display) without ruining adaptation to low light. (Works best with AMOLED screens, where black = no light.) See: https://en.wikipedia.org/wiki/Purkinje_effect#Use_of_red_lights https://en.wikipedia.org/wiki/Purkinje_effect#Use_of_red_lig....