Projector bulbs - brightness vs life expectancy
I guess I never really noticed before since we've only had ceiling mounted projectors for a few years now, but the bulbs in these things are needing to be replaced a lot sooner than I would have thought. The projectors are Optoma TW675UTi-3D with the bulbs advertising a 2500 hour lifespan. I'm finding that in many classrooms the picture is so dull they can barely be seen with the shades drawn and the lights off at only 1500 hours. Is this normal? If it is I can't believe you could advertise a lifespan like this and have it be so useless at 2/3rds of the way through its time. These things are $300USD a pop!