Quote:
Originally Posted by jr_tech
old_tv_nut nailed it in the above post:
Room light reflected from the CRT phosphor surface gets attenuated twice a much as light produced by the phosphor hence contrast enhancement. I suspect that there is also a trade off with tube life, as beam current might be turned up a bit to compensate for the brightness loss.
Another enhancement can be achieved by depositing an anti-reflection coating on the *front* surface of the CRT to reduce the approximately 4% reflection of room light from that surface... I don't recall seeing a consumer TV with CRT AR coating, but perhaps it was used on some high end models.
jr
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Interesting, I always wondered about this!