| part2wanksta |
i bought this lens from american science and surplus adn it seems like it is making the lcd loose brightness.
i think it is a triplet.
if i put a singlet i get a brighter picture
so is there a triplet that will give me the brightness of a singlet |
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| Me2! |
| Any chance there is still a plastic film on the lenses for protection in shipping? |
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| ELiTeHaYDeN |
| A tripple element lens is always to gobble more light as it has to pass through 2 more elements than a single element lens, try sliding a single sheet of glass in your projectors light path and you will see a reduction in brightness, not significant, but enough to notice. |
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| part2wanksta |
me2 everything is off of the lens
i guess 3 lenses together= some light lossage
oh well,
its still cool |
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| ancorp |
| Well, are they both the same diameter? the bigger the diameter, the more light coming through... other factors might affect brightness too... |
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| part2wanksta |
the diameter is about 2in. it seems like the midle lens is a bit smaller.
so this is what i am hoping. i am hoping that the 250w bulb i am using is not a universal mount and that it isnt doing good horizontal.
or that my reflector isnt good enough |
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| ace3000_1 |
| quote: | | the diameter is about 2in. it seems like the midle lens is a bit smaller. |
Miles too small, you want a clear lens diameter of 60mm or more.
Trev:) |
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| part2wanksta |
So than the problem could be my lens.
well here is a picture of my lens and another of my setup.
someone tell me if the problem is the lens or the setup |
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| part2wanksta |
| here is my setup. and sorry i didnt know that was a bad word |
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| part2wanksta |
| different angle |
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| ace3000_1 |
What bad word? ;)
From looking at your pics a couple of things look abit out though it could be just the angle from the cam.
1) Make sure the lamp is central to the lcd's center, also the frensels center must be in the center of the lcd. All centers must follow through, this goes for hight aswell.
2) Your focals look abit messed up, the feild frensel looks to be too close the the projection lens.
Take a look at those buddy and see what you get.
Trev:) |
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| part2wanksta |
| well the projection lens has to sit outside of the box, about 8in from the lcd. i will look to center everything today and see what happens |
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| part2wanksta |
personnally i dont think that centering everything will make that much of a differance
i think it is the lens
the lens is 2.5" in diameter |
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| part2wanksta |
well the centering everything helped a little bit but not much at all. it still sucks at dark scenes
so what do you think is the most possible thing it could be.
1. need a better objective lens
2. the bulb cannot do horizontal burning good, so buy a bulb that is universal burn.
3. the bulb is not strong enough, so upgrade to 400w |
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| ace3000_1 |
How manny watts is your bulb? 175w isnt it?
What way is it meant to burn? only burn it in the way its meant to be burned.
Are you using page maggs?
Centering everything up makes the world of difference, if not and if your using page mags, they are poor quality in general. To me its more then likley a few things:
1) No decent reflector
2) Poor quality frensels
3) Small projection lens
4) poor centering of optics
5) Wrong focal distances
Trev:) |
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| part2wanksta |
im using a 250w bulb
i just bought it from this electrical supply store, i dont know which way it is meant to burn.
im using the fresnels from a ohp. i dont know the focals
yeah my reflector does suck.
or my projection lens is small
which do you think is most likely the problem.
the focals, the reflector, the lens, or the bulb.
or maybe the lcd.
and is there some kind of program or something to modify the brightness of the image. if so that will solve everything |
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| part2wanksta |
| im sad, i dont understand why it isnt bright enough |
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| part2wanksta |
i fixed it all and i am really happy.
my video card has tv out on it so i used that. then i found out that i have to put the tv out to primary monitor for it to display video.
than i just tweak the brightness and everything works out
ill try to post pictures tommorrow, if i can get a hold of a camera.
one more thing.
o was trying to move my projector while it was on and i got electricuted badly. it went all the way to my feet. it hurt and it really sucked |
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| Dazzzla |
| quote: | | o was trying to move my projector while it was on and i got electricuted badly. it went all the way to my feet. it hurt and it really sucked |
GO AND GET YOURSELF CHECKED OUT!!!
Electrical shock can have very bad delayed consequences, soft tissue damage to your internal organs.
DJ |
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| part2wanksta |
| really, **** that counds bad |
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| part2wanksta |
but it was only 120v, so i hope i am alright.
it was weiird though. i know that the bottom of my case is metal but i didnt think that would effect anything.
i just started picking it up and then as it was shocking me i just stood there. i couldnt really move. it really sucked.
but my projector does work and i am happy for that. lol |
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| Dazzzla |
IU know what you mean about the strange feeling. I've done some stupid things and gotten a couple of boots. It sort of stops time and leaves you pumped up on adrenalin. If it had of been DC, you would probably still be holding on.
DJ |
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| ukagr |
| hey wanksta sounds like you have bigger problems if the bottom of your projector is hot. you need to look over your wiring agian and wrap everything up. There is a saying, Voltage burns but amps kills. just because it's 120V doesn't mean much. But if you have high amps it can kill you. Please be careful. It would suck to finally get your pj done(which is pretty sweet) and not be able to watch it :dead: |
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| Me2! |
This is crazy. :whazzat:
Everyone better be damn careful when screwing with the ballasts. If you dont know what you are doing get an electrician. If you know you are a klutz get an electrician.
I put on work boots with massive resistance if im doing anything electrical. This is one area there is no second chance.
Your projector wont impress anyone if you are stuck dead beside it. |
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| Stocker |
Not true!
Fireman#1: "wow, that's one fried dead guy there!"
Fireman#2: "did a number on his house, too, but check out the chassis construction on that projector!"
Safety guys, come on. They used to send us to Medical if we told our Navy bosses we even got a tingle. Long term coronary-related stuff, bad ju-ju. |
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| ace3000_1 |
| quote: | | but it was only 120v, so i hope i am alright |
Dont be a fool, 120v kills.
If you dont know what you are doing seek help. By law you are suposed to be a licensed electrition to carry out such work, these laws are there for a reason. Your life is not worth risking. Make sure you get checked out at the doctor for your boot aswell as electricity causes long term damage to nerve endings.
Though i cant see your wiring, to me i think you got your boot from the earth. Never earth anything to somthing that is condictive and you are going to handle. If there is a fault with somthing or if the circut relys on an earth, you will wear it. Thats why in todays modern day world we have double insulation ;) , (though its not always the case with everything).
While your boot was quite high, it still dont beat my 450v kick i got last year :D .
Take Care!!!!
Trev:) |
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| Dazzzla |
| quote: | | While your boot was quite high, it still dont beat my 450v kick i got last year . |
You been playing with 3phase Trev?:hot:
DJ |
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| ace3000_1 |
Na im not that stupid lol i got the boot from a cap, knocked me silly for about 40mins. It went up my right arm through to the neck and back of the head then through my chest. Lucky enough the cap was discharged before it reached my heart or i could of realy been in the poop.
Was on a psu that had a cracked board, because the board was cracked without me knowing it it wasnt discharging through the rest of the circut, silly mistake. The reason on how i know it was 450v is because latter after i got my senses back i turned it on again then off, then measured it. It was 450v alright, was a big cap too.
Trev:) |
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