You can’t easily use a filter to turn red light into blue. Imo if you needed to light a room for a camera or something not the human eye, red seems like it would be effective for that, but given the filter situation and the eye being best at detecting green light it doesn’t make sense to use red as the base color for indoor bulbs.
From what I read, red LEDs were most efficient at 1.8v and blue more near 4v. Maybe its trivial to do second voltage line but the filter situation is probably the limiting factor here.
You can’t easily use a filter to turn red light into blue. Imo if you needed to light a room for a camera or something not the human eye, red seems like it would be effective for that, but given the filter situation and the eye being best at detecting green light it doesn’t make sense to use red as the base color for indoor bulbs.
From what I read, red LEDs were most efficient at 1.8v and blue more near 4v. Maybe its trivial to do second voltage line but the filter situation is probably the limiting factor here.