I feel like they probably have something to do with light level detection or infrared signal receiving but I genuinely have no idea. They could just as likely be part of the sound system for all I know.

  • ch00f@lemmy.worldEnglish
    2·
    10 months ago

    What kind of projection? DLP? LCD?

    What’s confusing to me is the diode. It almost looks like a freewheeling diode for an inductive load, but I can’t imagine what that would be.

    Could also be ESD protection, but I wouldn’t expect a large IR photodiode to need much ESD protection.

    Also if it’s truly a passive component like a receiver, I’m surprised there isn’t any local components for filtering or amplification.