hi, im noob to this forum, thought ill ask the experts.
the question
say if i buy a projector for example sayno z4. can i strip it and put my on lamp and enclosure, instead of the one they provide. would that work.
thanks in advance
the question
say if i buy a projector for example sayno z4. can i strip it and put my on lamp and enclosure, instead of the one they provide. would that work.
thanks in advance
You can't just put any enclosure. To start off with it won't fit, and the lamp will be out of alignment due to incorrect distance from the focal point.
You may however be able to strip your lamp and replace just the bulb (or burner as it's correct term) however cannot replace it with just any old bulb. Projectors use a special type of arc lamps known as mercury vapour lamps. They are an entirely different technology from the general incandescent bulb that we are used to. The Sanyo PLV-Z4 take a 150W AC Mercury Vapour Burner. By replacing the burner with a mercury vapour burner will require no modifications to the projector itself.
Alternative, you may replace your burner with that found in Xenon Headlamps in Cars. Although they won't give you the same brightness or size. However, this will require either replacing the internal ballast or the usage of an external Ballast designed for the Xenon Burner. This method will also need modifications internally to the optocouplers to fool the projector into thinking the correct lamp is installed and fully working, in order to keep the projector awake. Any other modifications to the light source other than the Mercury Vapour option will require internal modificaion of shorting the lamp lit signals at the optocoupler.
The headache free option is too replace just the bare lamp (meaning reflector and bulb). The next recommended option (unless others want to disagree) would be to DIY replace the burner with a mercury vapour UHP burner. Not only will these options require no modifications, they will give you optimum performance and brightness and a longer lifespan compared to the Halogen option.
BTW, Welcome to the Forum.
You may however be able to strip your lamp and replace just the bulb (or burner as it's correct term) however cannot replace it with just any old bulb. Projectors use a special type of arc lamps known as mercury vapour lamps. They are an entirely different technology from the general incandescent bulb that we are used to. The Sanyo PLV-Z4 take a 150W AC Mercury Vapour Burner. By replacing the burner with a mercury vapour burner will require no modifications to the projector itself.
Alternative, you may replace your burner with that found in Xenon Headlamps in Cars. Although they won't give you the same brightness or size. However, this will require either replacing the internal ballast or the usage of an external Ballast designed for the Xenon Burner. This method will also need modifications internally to the optocouplers to fool the projector into thinking the correct lamp is installed and fully working, in order to keep the projector awake. Any other modifications to the light source other than the Mercury Vapour option will require internal modificaion of shorting the lamp lit signals at the optocoupler.
The headache free option is too replace just the bare lamp (meaning reflector and bulb). The next recommended option (unless others want to disagree) would be to DIY replace the burner with a mercury vapour UHP burner. Not only will these options require no modifications, they will give you optimum performance and brightness and a longer lifespan compared to the Halogen option.
BTW, Welcome to the Forum.
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thank you, but i was thinking to take the LCD panel out and redesign the enclosure to make it fit.
so i would have.
buner --> fresnel--LCD--Fresnel---->projections lens.
thats wot i was thinking. i'm sorry if im wrong. im sure many people must have thought of this. i just wan a know why it wouldn't work.
so i would have.
buner --> fresnel--LCD--Fresnel---->projections lens.
thats wot i was thinking. i'm sorry if im wrong. im sure many people must have thought of this. i just wan a know why it wouldn't work.
By the way, that Sanyo projectors the nuts! For starters, the projector is a 3 LCD so the arrangement you are talking about; it is not as simple as that. If you somehow do manage to disturb any of the LCD, then believe me you will be all day trying to just get it aligned. It has got prisms which diverges the light through the LCD and then converges to the projection lens. The LCD is only about 2cm diagonally. You really do need a lamp which has about 1.5mm arc gap. Any greater will result in a dimmed outpur as you will not be able to collect all the light from the point source (unless of course you can find a metal hide with an arc gap that small).
I guess my answer to you would be, you really never know how bright you will be able to get it unless you try. If you have time and money on the hands, by all means give it a go, it should be fun even if the results are poor. I think most of the people on this forum started off with some sort of trial and error but my only concern is that how will you get adequate light through the LCD?
Ok think about it in theory yeah? Imagine a 15" LCD DIY (OHP style) setup, bit like what you are suggesting, powered with a 250W HQI-TS for arguments sake. Lets say that is projected on a wall and you get 150" projected image. That is 10 times magnification from the initial LCD size. Now (imagine) see the 7.87" in the dead centre (converted to inches from 20cm) is the bit that you in theory will project from a 2cm LCD panel. All the light around it will be wasted as will not be capture by the tiny LCD. If you now calculate it area squared, then you should be able to calculate how efficient it will be in percentage wise. Now blow that 7.87" to 78.7" (10 times) it will only get dimmer as it is like saying blowing the 150" (with the 15" LCD) to 1500". Yeah I know!
I don't know if this makes sense to you but it does to me as I tried a similar experiment years back with a 5" LCD and the results were poorly due to the exact problem of not able to catch all the light with the fresnal as I wanted to make it as compact as possible. I had thought of this with a DLP projector but couldn't think how I will get enough light down the 8mm light tunnel! Thus scrapped the whole idea.
Also by bringing the lamp too close to the LCD will also fry it so really I can'tsee how it will work but don't want to discourage you in anyway as in all honesty, I would really like to see it work! Before you do that, make sure you have bypassed your projector first. Good luck and if you do decide to go ahead and give it a go then make sure you do a write up with pictures.
I guess my answer to you would be, you really never know how bright you will be able to get it unless you try. If you have time and money on the hands, by all means give it a go, it should be fun even if the results are poor. I think most of the people on this forum started off with some sort of trial and error but my only concern is that how will you get adequate light through the LCD?
Ok think about it in theory yeah? Imagine a 15" LCD DIY (OHP style) setup, bit like what you are suggesting, powered with a 250W HQI-TS for arguments sake. Lets say that is projected on a wall and you get 150" projected image. That is 10 times magnification from the initial LCD size. Now (imagine) see the 7.87" in the dead centre (converted to inches from 20cm) is the bit that you in theory will project from a 2cm LCD panel. All the light around it will be wasted as will not be capture by the tiny LCD. If you now calculate it area squared, then you should be able to calculate how efficient it will be in percentage wise. Now blow that 7.87" to 78.7" (10 times) it will only get dimmer as it is like saying blowing the 150" (with the 15" LCD) to 1500". Yeah I know!
I don't know if this makes sense to you but it does to me as I tried a similar experiment years back with a 5" LCD and the results were poorly due to the exact problem of not able to catch all the light with the fresnal as I wanted to make it as compact as possible. I had thought of this with a DLP projector but couldn't think how I will get enough light down the 8mm light tunnel! Thus scrapped the whole idea.
Also by bringing the lamp too close to the LCD will also fry it so really I can'tsee how it will work but don't want to discourage you in anyway as in all honesty, I would really like to see it work! Before you do that, make sure you have bypassed your projector first. Good luck and if you do decide to go ahead and give it a go then make sure you do a write up with pictures.
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