Its HERE
I got my OHP today so I turned it on and DAMN!! that thing is bright so bright I turned on all the lights and it didnt affect it ANY. The bulb is a Osram HMI575WGS i found it for $100 on some bulb site it lasts 750 hours but Im gonna ask my friend if he can order them and get it at cost 😛 If any of you want a bad *** OHP I suggest getting a dukane 28A681 I dont see an OHP gettin much better than this oh yea and its good white light here are some pics of the inside so you can get an idea how the lighting works.
I got my OHP today so I turned it on and DAMN!! that thing is bright so bright I turned on all the lights and it didnt affect it ANY. The bulb is a Osram HMI575WGS i found it for $100 on some bulb site it lasts 750 hours but Im gonna ask my friend if he can order them and get it at cost 😛 If any of you want a bad *** OHP I suggest getting a dukane 28A681 I dont see an OHP gettin much better than this oh yea and its good white light here are some pics of the inside so you can get an idea how the lighting works.
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An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
nice ohp!
Marklar,
Does it say "quantum" on top? Does it have a counter for the hours on the bulb? If so, you did get a hell of a deal. I bid 3X what you GOT yours for and was still outbid. They must've listed it as a Dukane 28A681, rather than a Dukane Quantum for it to slip by all the snakes in the grass (like me) on Ebay.
I had the chance to buy one for $125 and turned it down, that one went for $160. It had half the hours elapsed (>350) too.
"Good luck" getting one of these on Ebay for $50 - everybody else wants 'em too!
Maybe cause the bulb was out, and costs so much, that the seller figured it wasnt worth over $100?
Wait till you see your panel with this and the nice Dukane lens system!
Marklar,
Does it say "quantum" on top? Does it have a counter for the hours on the bulb? If so, you did get a hell of a deal. I bid 3X what you GOT yours for and was still outbid. They must've listed it as a Dukane 28A681, rather than a Dukane Quantum for it to slip by all the snakes in the grass (like me) on Ebay.
I had the chance to buy one for $125 and turned it down, that one went for $160. It had half the hours elapsed (>350) too.
"Good luck" getting one of these on Ebay for $50 - everybody else wants 'em too!
Maybe cause the bulb was out, and costs so much, that the seller figured it wasnt worth over $100?
Wait till you see your panel with this and the nice Dukane lens system!
Sharp qa 1500
man i love this thing(my qa 1500), great resolution, crisp picture, no motion blur. I paid 80 for it on ebay, do you think i got a good deal?
by the way, i am still selling my 3m panel (vga input 640x480 res)for $40 (u.s) email me if you want it jaysnoogans2@attbi.com
regards
Aaron (the teenager of the board)
man i love this thing(my qa 1500), great resolution, crisp picture, no motion blur. I paid 80 for it on ebay, do you think i got a good deal?
by the way, i am still selling my 3m panel (vga input 640x480 res)for $40 (u.s) email me if you want it jaysnoogans2@attbi.com
regards
Aaron (the teenager of the board)
Some info on lighting
Hi guys, For those searching for lighting system, some cool websites on sulphur lights
"The 1,425 watt LightDrive 1000 produces 135,000 lumens of sunlight-quality light and has a design lifetime of 60,000 hours with no light depreciation. Its high output is ideal for light pipe applications, allowing lengths of up to 65 feet with a single lamp. The lamp achieves full light output in only 25 seconds, can be dimmed to 20 percent of output and has a color rendering index of 79."
Fusion Lighting also has 100 watt and 200 watt bulb systems designed for projectors. The 200 watt model, according to that efficiency level, could produce 18,947 lumens of bulb output. Now that would make one hell of a projector and all of their projector bulbs do not need fans because so much of the light produced is visible light, not infrared.
According to some sources this bulbs will be featured in some of the upcoming high end projectors...
Sorry for the long post..😎
http://www.lightresource.com/press27.html http://eande.lbl.gov/CBS/NEWSLETTER/NL6/S-Lamp.html http://www.fusionlighting.com/technology.htm http://www.fusionlighting.com/sulfur.htm http://www.fusionlighting.com/special.htm
Hi guys, For those searching for lighting system, some cool websites on sulphur lights
"The 1,425 watt LightDrive 1000 produces 135,000 lumens of sunlight-quality light and has a design lifetime of 60,000 hours with no light depreciation. Its high output is ideal for light pipe applications, allowing lengths of up to 65 feet with a single lamp. The lamp achieves full light output in only 25 seconds, can be dimmed to 20 percent of output and has a color rendering index of 79."
Fusion Lighting also has 100 watt and 200 watt bulb systems designed for projectors. The 200 watt model, according to that efficiency level, could produce 18,947 lumens of bulb output. Now that would make one hell of a projector and all of their projector bulbs do not need fans because so much of the light produced is visible light, not infrared.
According to some sources this bulbs will be featured in some of the upcoming high end projectors...
Sorry for the long post..😎
http://www.lightresource.com/press27.html http://eande.lbl.gov/CBS/NEWSLETTER/NL6/S-Lamp.html http://www.fusionlighting.com/technology.htm http://www.fusionlighting.com/sulfur.htm http://www.fusionlighting.com/special.htm
yeah and one more thing,
the sulphur lights have 6500K color temperature😎
BTW, came across a website..
Has anyone seen or used the lights?
2X 100W spotlight that puts out 3 million candle power which works out to be 37 million lumens. Does that sound right?
http://www.ccrane.com/3_million_spotlight.asp
the sulphur lights have 6500K color temperature😎
BTW, came across a website..
Has anyone seen or used the lights?
2X 100W spotlight that puts out 3 million candle power which works out to be 37 million lumens. Does that sound right?
http://www.ccrane.com/3_million_spotlight.asp
hm
I think you've got your conversions wrong --
1 Lumen = 4*pi Candlepower
1 Lumen = 12.5664 candlepower
so, 3,000,000 / 12.5664 = 238,730 Lumens. That number is bogus. They must be pulling it out of their butts. 100W halogen is lucky to produce 4,000 lumens.
I think you've got your conversions wrong --
1 Lumen = 4*pi Candlepower
1 Lumen = 12.5664 candlepower
so, 3,000,000 / 12.5664 = 238,730 Lumens. That number is bogus. They must be pulling it out of their butts. 100W halogen is lucky to produce 4,000 lumens.
New member, many questions...
Another lurker coming forward. Hi, I'm dave. I found the forum about a two weeks ago just when My basement Home-theatre renovations are coming to a close. (and I've turned my mind from drywall & subfloor to Audio and video!)
The dream of home theater at a low cost is clearly a possibility, and the experience and knowledge on this forum will prove most beneficial. However, it seems that my component choices don't seem to be typical, and therfore scouring the 96 pages of posts still hasn't dredged up the answers I need. So I'll post them here, and see what kind of responses they generate.
1st: Panel choice. I've obtained a Dell laptop computer (Latitude CP) with a 13" 800x600 display. (I hope to find a 1024x768, so I'm trying to keeping my ideas scalable)
Here's what the panel looks like, once it's freed from the case (see attached pic)
But I havent figured out stuff like:
a) What kind of connector is that that takes the input signal?
b) Where do I find the extension cable which will hook up the vertical and horizontal signals (that is, since the circuit board must be swung out of the way and disconnected from the edge board, how can it be reconnected?
c) Does the panel also require power, as well as signal. (I know that the backlight for the display in the portable computer needed power, but was it ONLY for the backlight?
2) Once all that cabling is sorted out, I haven't seen too many firm ideas on the controller board that would send the svga/XGA signal to this unit. Maybe something like this unit:
http://www.digitalview.com/products/controllers/info2.php?ControllerModel=AVT-1024
So that might get a signal to the panel, but now I need to pump in my preferred video sources: Cable TV, S-Video, DVD/Laser (yeah, really). So there's something like this that seems like a good idea called an "XGA Theatre":
https://secure1.nexternal.com/share...filiateID=&CS=avtoolbox&BusType=BtoC&Keyword=
Maybe there's a circut board that does the job of both of these units, I dunno.
Any thoughts on this mess? I know the majority seem to opt for the all-in-one panels, like the Sharp QA-series, but I can't imagine the path I'm on is all bad.
Down the road (thanks to the great excel spreadsheet worksheet provided by Gunawan W) the rest looks fairly striaght forward. Except for one thing: there's not real reference to the typical or desired lens diameter. Are we talking 4"? or 2" or 7"?
I'm sure there's more I haven't even thougth of, but I hope this won't seem too ignorant.
Thanks,
dave.
(PS: I accidentally cross posted this note in the good panel/bad panel thread. I didn't mean to.)
Another lurker coming forward. Hi, I'm dave. I found the forum about a two weeks ago just when My basement Home-theatre renovations are coming to a close. (and I've turned my mind from drywall & subfloor to Audio and video!)
The dream of home theater at a low cost is clearly a possibility, and the experience and knowledge on this forum will prove most beneficial. However, it seems that my component choices don't seem to be typical, and therfore scouring the 96 pages of posts still hasn't dredged up the answers I need. So I'll post them here, and see what kind of responses they generate.
1st: Panel choice. I've obtained a Dell laptop computer (Latitude CP) with a 13" 800x600 display. (I hope to find a 1024x768, so I'm trying to keeping my ideas scalable)
Here's what the panel looks like, once it's freed from the case (see attached pic)
But I havent figured out stuff like:
a) What kind of connector is that that takes the input signal?
b) Where do I find the extension cable which will hook up the vertical and horizontal signals (that is, since the circuit board must be swung out of the way and disconnected from the edge board, how can it be reconnected?
c) Does the panel also require power, as well as signal. (I know that the backlight for the display in the portable computer needed power, but was it ONLY for the backlight?
2) Once all that cabling is sorted out, I haven't seen too many firm ideas on the controller board that would send the svga/XGA signal to this unit. Maybe something like this unit:
http://www.digitalview.com/products/controllers/info2.php?ControllerModel=AVT-1024
So that might get a signal to the panel, but now I need to pump in my preferred video sources: Cable TV, S-Video, DVD/Laser (yeah, really). So there's something like this that seems like a good idea called an "XGA Theatre":
https://secure1.nexternal.com/share...filiateID=&CS=avtoolbox&BusType=BtoC&Keyword=
Maybe there's a circut board that does the job of both of these units, I dunno.
Any thoughts on this mess? I know the majority seem to opt for the all-in-one panels, like the Sharp QA-series, but I can't imagine the path I'm on is all bad.
Down the road (thanks to the great excel spreadsheet worksheet provided by Gunawan W) the rest looks fairly striaght forward. Except for one thing: there's not real reference to the typical or desired lens diameter. Are we talking 4"? or 2" or 7"?
I'm sure there's more I haven't even thougth of, but I hope this won't seem too ignorant.
Thanks,
dave.
(PS: I accidentally cross posted this note in the good panel/bad panel thread. I didn't mean to.)
Attachments
Laptop display
Dave:
Sorry to be the bearer of bad news but it's not practical to use old laptop displays for this purpose. You can't just feed a analog signal to the panel. You have to convert the analog signal to digital via a controller card. The controller cards for the laptop lcd are rather expensive (if you can find one). I've seen some on eBay for approx $150. Earthlcd also carries controller card that, if I remember correctly, sell for that much or more. Additionally most of the controller cards are setup for a particular panel and you odds of finding one that will work for you are not good.
There are two type of cards that I've seen, PC based cards and standalone cards. The PC based card will (I would guess) have a limitation on the distance between the PC and the display. You would also have to find a way to feed the video to the PC.
The standalone card accept various non VGA video signals (S-video, NSTC, etc.) These cards are generally more expensive than the PC based cards. This is the type of card (Digitaview) that you provided the link to. I've emailed Digitalview regarding pricing and they indicated that they don't sell single cards.
The power for the lcd would be supplied by the controller card.
I looked into this route when I started researching for my project and quickly gave up on the idea. Do an eBay search for "lcd controller" maybe you will get lucky. Welcome aboard!!!
Dave:
Sorry to be the bearer of bad news but it's not practical to use old laptop displays for this purpose. You can't just feed a analog signal to the panel. You have to convert the analog signal to digital via a controller card. The controller cards for the laptop lcd are rather expensive (if you can find one). I've seen some on eBay for approx $150. Earthlcd also carries controller card that, if I remember correctly, sell for that much or more. Additionally most of the controller cards are setup for a particular panel and you odds of finding one that will work for you are not good.
There are two type of cards that I've seen, PC based cards and standalone cards. The PC based card will (I would guess) have a limitation on the distance between the PC and the display. You would also have to find a way to feed the video to the PC.
The standalone card accept various non VGA video signals (S-video, NSTC, etc.) These cards are generally more expensive than the PC based cards. This is the type of card (Digitaview) that you provided the link to. I've emailed Digitalview regarding pricing and they indicated that they don't sell single cards.
The power for the lcd would be supplied by the controller card.
I looked into this route when I started researching for my project and quickly gave up on the idea. Do an eBay search for "lcd controller" maybe you will get lucky. Welcome aboard!!!
Here's a dumb question, in response to DaveB's post, and Bixis reply. If you had a running note book, could you not possibly make that into an HTPC, and extend the wiring for the LCD to provide for projection? Since the needed controller is built into the computer for the lcd, all you would need is a way to bring in NTSC video. I know there is a version of WinTV that connects to the USB port, whether or not this is compatible with DSCALER is the question. And some notebooks have optional full docking stations that provide PCI slots. So theoretically, if you had a reasonbly fast, running notebook, you could kill 2 birds with one stone. I have no idea what the minimum requirements for DSCALER are, but it is an idea.
sure..
Sure, that could probably be done. But, in order to get a laptop that is half-worth it, has enough speed, and nice TFT display, you're going to drop $800+.
I don't see the feasibility of that. I've got a P3-700 laptop /w 15.0" XGA display, but, theres no way in hell I'm going to rip apart a laptop that cost me $1850 -- that I use every day -- just to make it a dedicated home theater system - after I've put another $100+ into a TV input card, and who knows what else to get it working.
And, if you have that kind of money, you should just go buy an LCD projector. If you have that kind of equipment and are actually considering this, forget it, E-bay it, buy a kick *** XGA LCD projection Panel, buy an XGA theater, and go out for steaks with the rest of the money. you would be set.
Sure, that could probably be done. But, in order to get a laptop that is half-worth it, has enough speed, and nice TFT display, you're going to drop $800+.
I don't see the feasibility of that. I've got a P3-700 laptop /w 15.0" XGA display, but, theres no way in hell I'm going to rip apart a laptop that cost me $1850 -- that I use every day -- just to make it a dedicated home theater system - after I've put another $100+ into a TV input card, and who knows what else to get it working.
And, if you have that kind of money, you should just go buy an LCD projector. If you have that kind of equipment and are actually considering this, forget it, E-bay it, buy a kick *** XGA LCD projection Panel, buy an XGA theater, and go out for steaks with the rest of the money. you would be set.
Undream: It's not as outlandish as it sounds. Say you are going to use an htpc setup, most people would want a seperate computer for that, so either they have one, or will buy a cheap one that can handle DSCALER. DSCALER (the newest version) needs a pentium II at 400 mhz and agp video. From ebay you could pick up said desktop for 150-200. You could pick up said notebook for 400-550. The tv card is $35-50. For the desktop you would need an XGA projection panel, going for about 250-270 on ebay right now, for a good one(sharp 2500). For the notebook, you would need a docking station with pci slot, about $30 on ebay.
So our totals are:
Desktop: computer (150) + lcd (270) + tv card (35) = 455
Notebook: computer (500) + dock (30) + tv card (35) = 565
For a 100 more dollars than a desktop HTPC you could have a notebook built in to the projector case and possibly a resolution greater than 1024*768.
So our totals are:
Desktop: computer (150) + lcd (270) + tv card (35) = 455
Notebook: computer (500) + dock (30) + tv card (35) = 565
For a 100 more dollars than a desktop HTPC you could have a notebook built in to the projector case and possibly a resolution greater than 1024*768.
Hi Undream,
Is your conversion factor correct...
the conversion from candle power to lumens is stated as,
1 candle power= 12.57 lumens
http://www.hydroponics.net/learn/high_intensity_discharge_bulb_sp.asp
makes for some good read as well...lighting theories...🙂
Is your conversion factor correct...
the conversion from candle power to lumens is stated as,
1 candle power= 12.57 lumens
http://www.hydroponics.net/learn/high_intensity_discharge_bulb_sp.asp
makes for some good read as well...lighting theories...🙂
fresnel panel
Joe Jasniewski,
fresnel panel focal length is not critical, if it's out of focus you just loose some light intensity, common fresnel panel from OHP just doing fine.
But, if you want perfect panel, find panel with focal length = distance of LCD panel to the lens, at least close.
BTW, speaking of DIY,
I'm too, build LCD projector from scratch.
"DIY how to turn the radio on? find on-off switch, click that switch on ....." 😀
is that really DIY?
Because when you buy OHP with big lumen output and LCD panel ready for OHP (Ovation 810 for example), you just put the panel on top of the OHP, turn on and done. Where is the spirit of DIY? There is no room for discussion, because it's just a standard procedure for that setup, unless when you start thinking to change the lamp, lens etc, then
this forum what are for.
Gunawan W
Joe Jasniewski,
fresnel panel focal length is not critical, if it's out of focus you just loose some light intensity, common fresnel panel from OHP just doing fine.
But, if you want perfect panel, find panel with focal length = distance of LCD panel to the lens, at least close.
BTW, speaking of DIY,
I'm too, build LCD projector from scratch.
"DIY how to turn the radio on? find on-off switch, click that switch on ....." 😀
is that really DIY?
Because when you buy OHP with big lumen output and LCD panel ready for OHP (Ovation 810 for example), you just put the panel on top of the OHP, turn on and done. Where is the spirit of DIY? There is no room for discussion, because it's just a standard procedure for that setup, unless when you start thinking to change the lamp, lens etc, then
this forum what are for.
Gunawan W
sheeeeyaatt!!!!
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1724709558
not bad screenshots from a 640x480 panel i thought....i know it has 14 million colours as opposed to my 820's 2 mill, but i would be more than happy with a pic like that! 🙂
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1724709558
not bad screenshots from a 640x480 panel i thought....i know it has 14 million colours as opposed to my 820's 2 mill, but i would be more than happy with a pic like that! 🙂
DIY lenses
Hello, I was wondering if anyone has a lens that they have bought that works with an LCD projection panel setup? I know someone said they tried a 5 7/8" plano-convex lens from surplus shed, and got a 7ft image at 15 feet I was wondering how the image was. I tried a Delta lens with my panel and LOA with frensel in between and the projector just had to be too close to the screen due to the small throw of the lens. And the image was cropped due to the 4" dia of the lens. If anyone has found a solution to this problem that would be great to share with the rest cause I have noticed others with the problem of finding a suitable lens. Thanks 🙂 Jason
Hello, I was wondering if anyone has a lens that they have bought that works with an LCD projection panel setup? I know someone said they tried a 5 7/8" plano-convex lens from surplus shed, and got a 7ft image at 15 feet I was wondering how the image was. I tried a Delta lens with my panel and LOA with frensel in between and the projector just had to be too close to the screen due to the small throw of the lens. And the image was cropped due to the 4" dia of the lens. If anyone has found a solution to this problem that would be great to share with the rest cause I have noticed others with the problem of finding a suitable lens. Thanks 🙂 Jason
hey
That was me that bought the 5 7/8" Plano-Convex lens from Surplusshed.
I could project a 9.4" diagonal light source (basically, missing the LCD, since I don't have one yet) with this lens in full, at about 14 feet away from the wall, it produced a 6-7 foot wide image, with near equivalent brightness throughout the entire projected image.
Basically to sum it up, it worked good 🙂 Better than the OHP lens, because the OHP lens that I have is only 3" or so diameter. The 5 7/8" size collects much more light, and takes care of the whole "LCD size is larger than projection lens diameter" problem.
Also, about candlepower, lumens, etc -- This is an interesting PDF about how candlepower basically means nothing. Its entirely relevant to the intensity of the beam produced (a spotlight versus, a floodlight). However, if a light is placed in the center of a sphere, with X lumens, it will produce X/4pi candlepower -- so, yes, your right, 3million candlepower would be 37 million lumens. I was wrong, sorry! But, that 3 million candlepower number is not the Mean Spherical Candle Power of the light. That is an entirely different number, than they don't put on the box for that thing.
He give an example of how a 10 lumen light, if reflected in a 4 degree spot, produces 2,500 candlepower.
http://www.caves.org.uk/led/foot1.pdf
That was me that bought the 5 7/8" Plano-Convex lens from Surplusshed.
I could project a 9.4" diagonal light source (basically, missing the LCD, since I don't have one yet) with this lens in full, at about 14 feet away from the wall, it produced a 6-7 foot wide image, with near equivalent brightness throughout the entire projected image.
Basically to sum it up, it worked good 🙂 Better than the OHP lens, because the OHP lens that I have is only 3" or so diameter. The 5 7/8" size collects much more light, and takes care of the whole "LCD size is larger than projection lens diameter" problem.
Also, about candlepower, lumens, etc -- This is an interesting PDF about how candlepower basically means nothing. Its entirely relevant to the intensity of the beam produced (a spotlight versus, a floodlight). However, if a light is placed in the center of a sphere, with X lumens, it will produce X/4pi candlepower -- so, yes, your right, 3million candlepower would be 37 million lumens. I was wrong, sorry! But, that 3 million candlepower number is not the Mean Spherical Candle Power of the light. That is an entirely different number, than they don't put on the box for that thing.
He give an example of how a 10 lumen light, if reflected in a 4 degree spot, produces 2,500 candlepower.
http://www.caves.org.uk/led/foot1.pdf
Kmart
I was just at Kmart today, and I saw that 2,000,000 Candlepower spotlight. it was $34.99. I dont know if it would be bright enough, but, the reflector inside that thing must be awesome.
I was just at Kmart today, and I saw that 2,000,000 Candlepower spotlight. it was $34.99. I dont know if it would be bright enough, but, the reflector inside that thing must be awesome.
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