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mycatisretarded
Joined: 18 Jan 2008
Posts: 124
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| Posted: Sun Dec 21, 2014 9:14 pm Post subject: spacers on 8500 hd-8 lenses |
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I picked up a freebee 8500 today, pulled the lenses off and noticed these 1/4 inch spacer hot melt glued to the back of the lenses. Are they there for a reason?
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mycatisretarded
Joined: 18 Jan 2008
Posts: 124
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| Posted: Sun Dec 21, 2014 10:02 pm Post subject: |
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The tubes look perfect, good emissions and only 470 hours with crts on. didn't expect that.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Mon Dec 22, 2014 1:21 am Post subject: |
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Score! Never seen those spacers before, but my guess it's so the projector could project a larger screen that normal. (I think that's how it works, lenses further away from the tubes gives a larger image)
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Mon Dec 22, 2014 4:05 am Post subject: |
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| Curt Palme wrote: | | Score! Never seen those spacers before, but my guess it's so the projector could project a larger screen that normal. (I think that's how it works, lenses further away from the tubes gives a larger image) |
silly rabbit, size is determined by distance of tubes from screen.
If they were projecting larger than 300 inches diagonally then reason for the spacers is to probably focus at that size
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