Hi guys been reading this fourm for ages now so i decided to give it a go an make a projector. seen some really good work on here like hillbilly and ace3000
I finally got my psone lcd and am now looking for a lens i was gonna use a triplet lens, but dont know if a crt lens would be better.
light source----frenel-----lcd------lens
that is the setup i want.
in this projector the guy never had a fresnel after the lcd, i thought this was nessacery.
http://www.lumenlab.com/forums/index.php?showtopic=1770&hl=psone&st=40
well the questions i have, are
does the focal length of the fresnal matter or does it need to match the lens.
do you need a fresnal after the lcd to direct light into lens.
should a triplet lens do or should i try get a crt lens.
I know you people can help 😀
I finally got my psone lcd and am now looking for a lens i was gonna use a triplet lens, but dont know if a crt lens would be better.
light source----frenel-----lcd------lens
that is the setup i want.
in this projector the guy never had a fresnel after the lcd, i thought this was nessacery.
http://www.lumenlab.com/forums/index.php?showtopic=1770&hl=psone&st=40
well the questions i have, are
does the focal length of the fresnal matter or does it need to match the lens.
do you need a fresnal after the lcd to direct light into lens.
should a triplet lens do or should i try get a crt lens.
I know you people can help 😀
G'day mate welcome to the forum.
The fresnels can be used either split or unsplit, that particular projector you linked too has the fresnels unsplit both in front of the lcd. I think you will find most people split them and have a fresnel either side of the lcd seems to yield better results, never tried them unsplit so personally I have know experience with them in that configuration. The fl of the fresnels should be matched to your lens. Personally i would go for the triplet but again I can't really comment on the quality of a crt lens as I never used one, purhaps one of the other fellas might offer some comparison input on this for ya bud 🙂
Best of luck with the project mate, look forward to seeing the progress on it 🙂
The fresnels can be used either split or unsplit, that particular projector you linked too has the fresnels unsplit both in front of the lcd. I think you will find most people split them and have a fresnel either side of the lcd seems to yield better results, never tried them unsplit so personally I have know experience with them in that configuration. The fl of the fresnels should be matched to your lens. Personally i would go for the triplet but again I can't really comment on the quality of a crt lens as I never used one, purhaps one of the other fellas might offer some comparison input on this for ya bud 🙂
Best of luck with the project mate, look forward to seeing the progress on it 🙂
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