i hope this pic comes out sorry im a new user
This is my idea that im building right noe as a light for my 6inch lcd screen, i dont belive in building a coffin for a box lol so i decided to make my projector not only compact but also servicable but with a profesional look to it too, it is currently getting built and the way im building it is in sections like the light source and the lcd electronics as separate units, testing it for brightness and getting focal lengnths. This light is very servicable and it is sealed in a way so the heat can only go through the vents u make for the fans that way it is self contained, this unit could be used for what ever sized bulb u want with a little bit of imagination it could go along way i guess in helping you guys out for making things compact yet safe for the good old lcd with the brightness. Anyway any ideas or coments im listening lol have a good one guys and thanks for your ideas from the past that helped me i hope this helps u
This is my idea that im building right noe as a light for my 6inch lcd screen, i dont belive in building a coffin for a box lol so i decided to make my projector not only compact but also servicable but with a profesional look to it too, it is currently getting built and the way im building it is in sections like the light source and the lcd electronics as separate units, testing it for brightness and getting focal lengnths. This light is very servicable and it is sealed in a way so the heat can only go through the vents u make for the fans that way it is self contained, this unit could be used for what ever sized bulb u want with a little bit of imagination it could go along way i guess in helping you guys out for making things compact yet safe for the good old lcd with the brightness. Anyway any ideas or coments im listening lol have a good one guys and thanks for your ideas from the past that helped me i hope this helps u
ACE 3000
I like your bulb idea alot. I have been playing around on paper with a similar idea.
Using your design and a piece of reasonably stiff highly reflective (chrome or polished aluminum) foil or sheet metal, you obtain a very nice near parabola. If you also can make the bulb position movable, you can optimize your light ray pattern leaving the unit. The ends where the bulb mount are not that important lightwise if you are using a elongated lamp and can accomodate the fan(s) as you have drawn.
Have you given any thought to mounting a reflector on the back of the glass to reflect diverging light back to the main reflector and maximize the development of parallel light rays?
Also, it seems to make sense to have the diameter of the reflector curve slightly larger than the height of your lcd for efficiency sake.
What are your other component details - lcd, lamp, fresnels, lens, etc? Are you going to employ polarizing film?
Regards,
David
I like your bulb idea alot. I have been playing around on paper with a similar idea.
Using your design and a piece of reasonably stiff highly reflective (chrome or polished aluminum) foil or sheet metal, you obtain a very nice near parabola. If you also can make the bulb position movable, you can optimize your light ray pattern leaving the unit. The ends where the bulb mount are not that important lightwise if you are using a elongated lamp and can accomodate the fan(s) as you have drawn.
Have you given any thought to mounting a reflector on the back of the glass to reflect diverging light back to the main reflector and maximize the development of parallel light rays?
Also, it seems to make sense to have the diameter of the reflector curve slightly larger than the height of your lcd for efficiency sake.
What are your other component details - lcd, lamp, fresnels, lens, etc? Are you going to employ polarizing film?
Regards,
David
RE😀avid Diy Light
Hi David thanks for your nice coments and ideas. The light i am using is the probally the hottest type of them all lol it is a 150w halogen that is coverd in a pearl coating so its whiter than the normal clear type, its says it puts out 2500 lumens wich is bright enough for my needs as its just for a 6ft by 4ft screen projection for movies in a small bedroom. The lcd im using is just a 6inch 960/240 pixels wich has about the same resolution as a projection tv. I have currently built my light well the main part but not mounted the brackets or angleline wich also u can use at this stage. At the moment i need to find out what the type of glass is that stops heat or insulates the heat from the lcd or the uv type glass, and also at the moment i have been building the lcd mount and contoler and tuner boards for the unit. The frensel im using is just a page reader i got from a stamp collecting shop for 2euro's and it fits perfectly behind the lcd, i have also found that mounting the frensel right behind the lcd and focusing the lcd with the frensel on the back to the light u seem to gain more light that the other way of focusing the frensel to the light then the lcd if u know what i mean lol, hey i like your ideas in what u have with the light and the light is just an idea to help u guys out, ofcourse u can do what u want with it but not resell the plans as i drew them and it can take any size fans , bulbs, reflector combination u want it to its upto u
Hi David thanks for your nice coments and ideas. The light i am using is the probally the hottest type of them all lol it is a 150w halogen that is coverd in a pearl coating so its whiter than the normal clear type, its says it puts out 2500 lumens wich is bright enough for my needs as its just for a 6ft by 4ft screen projection for movies in a small bedroom. The lcd im using is just a 6inch 960/240 pixels wich has about the same resolution as a projection tv. I have currently built my light well the main part but not mounted the brackets or angleline wich also u can use at this stage. At the moment i need to find out what the type of glass is that stops heat or insulates the heat from the lcd or the uv type glass, and also at the moment i have been building the lcd mount and contoler and tuner boards for the unit. The frensel im using is just a page reader i got from a stamp collecting shop for 2euro's and it fits perfectly behind the lcd, i have also found that mounting the frensel right behind the lcd and focusing the lcd with the frensel on the back to the light u seem to gain more light that the other way of focusing the frensel to the light then the lcd if u know what i mean lol, hey i like your ideas in what u have with the light and the light is just an idea to help u guys out, ofcourse u can do what u want with it but not resell the plans as i drew them and it can take any size fans , bulbs, reflector combination u want it to its upto u
Light Update
An update to this light:
The update is the heat glass.
The heat glass u will need is clear type uv filter glass and ir clear filter type glass if u are not going to use a cold mirror. Ir carries the heat more than the uv, ir carries the radiant heat and if u use a clear ir filter glass u will not need a cold mirror wich uses light, or u could just use the uv glass and use a cold mirror to filter heat. But by using the cold mirror u will gain heat in your enclosure, so using the ir filter glass wich gets hot too, will be cooled by the fans so it is more controled if u use the uv and ir filters on the main unit and not a cold mirror keeping the enclosure somewhat cooler in the end.
Regards Trev
An update to this light:
The update is the heat glass.
The heat glass u will need is clear type uv filter glass and ir clear filter type glass if u are not going to use a cold mirror. Ir carries the heat more than the uv, ir carries the radiant heat and if u use a clear ir filter glass u will not need a cold mirror wich uses light, or u could just use the uv glass and use a cold mirror to filter heat. But by using the cold mirror u will gain heat in your enclosure, so using the ir filter glass wich gets hot too, will be cooled by the fans so it is more controled if u use the uv and ir filters on the main unit and not a cold mirror keeping the enclosure somewhat cooler in the end.
Regards Trev
I like the idea! The only thing I would change is to reverse the air flow. Make it left to right by your diagram...no point in blowing extra heat past your lamp base and wiring than you need to.
zardoz
zardoz
zardoz said:
Yeah, the heat goes up by itself. So if you reverse it it will accelarate the "natural" heat air flow.
Airflow
Howdy guys the main reason i did the airflow in the order i did is because the glass producess the heat not the socket so as the fast flowing air is cooling the lamp glass the socket just gets to warm, but also by putting the fans in the reverse order that would work too using the socket as more of a heatsink at the same time.
Good thinking guys i recomend build one and try it, it works great for me and ive just tested mine with a 150w halogen bulb that normally melts plastic and now just gets warm.
A massive heat decrease using this idea, also this idea enables u to have smaller refectors and a smaller space for a mh bulb that would normally cook itself under these conditions therefore making the overal system some what smaller.
Trev
Howdy guys the main reason i did the airflow in the order i did is because the glass producess the heat not the socket so as the fast flowing air is cooling the lamp glass the socket just gets to warm, but also by putting the fans in the reverse order that would work too using the socket as more of a heatsink at the same time.
Good thinking guys i recomend build one and try it, it works great for me and ive just tested mine with a 150w halogen bulb that normally melts plastic and now just gets warm.
A massive heat decrease using this idea, also this idea enables u to have smaller refectors and a smaller space for a mh bulb that would normally cook itself under these conditions therefore making the overal system some what smaller.
Trev
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