So you ok admit that is your way to build something that others have already made years ago (fundamental)?
I agree to it absolutely. The same is always made. If one wants to improve something, one is laughed at.
The same is also your kitchens bowl. The attempt to use a large reflector would be new.
The form does not have astronomically to be exact, however, should have the right visual form
I agree to it absolutely. The same is always made. If one wants to improve something, one is laughed at.
The same is also your kitchens bowl. The attempt to use a large reflector would be new.
The form does not have astronomically to be exact, however, should have the right visual form
The thread contains nine pages which have lot of information on different types of reflectors and optics considerations. My intention of making such reference was that such material would be useful. The DIY community needs knowledge of fundamentals and easy solutions which can be implemented.Tobias Claren said:
ramkishan said:
All
are discussed. The time for new has come.
Why the rejection?
Is it bad to have a good reflector? Developed once everybody can get him?
Of course the plans are common property and everybody can have reflectors produced or produced himself.
Even if everybody does not produce him himself (effort), some really could produce and sell several. Everyone profits from it.
There is no rejection at all. Good reflectors are essentially needed. The metal halide lamp MH 400W is most commonly used. Which are the best designs of reflectors for different mountings of such bulbs? Let these be designed, produced and tested. The DIY community would be glad to have such reflectors as it would improve tremendously brightness and its uniformity corner to corner.Tobias Claren said:
I imagine this sooner so:
We (the community) find a design (members with this knowledge and/or software), and then I (or others interested) try a possibility of producing this themselves or letting produce.
See here: http://www.cut-the-knot.org/Curriculum/Geometry/ParabolaMirror.shtml
Again a parallel radiant paraboloide with focus inside. Perfect. If there is this really.
I find such a reflector nowhere. What I find has one everything end sera focus.
With www.Karl-Dose.de (maritime searchlights) one said there would be no paraboloid mirrors with the focus inside.
The searchlights of Karl Dose have the focus on the outside (after information on the telephone). Why? Light is lost there?
We (the community) find a design (members with this knowledge and/or software), and then I (or others interested) try a possibility of producing this themselves or letting produce.
See here: http://www.cut-the-knot.org/Curriculum/Geometry/ParabolaMirror.shtml
Again a parallel radiant paraboloide with focus inside. Perfect. If there is this really.
I find such a reflector nowhere. What I find has one everything end sera focus.
With www.Karl-Dose.de (maritime searchlights) one said there would be no paraboloid mirrors with the focus inside.
The searchlights of Karl Dose have the focus on the outside (after information on the telephone). Why? Light is lost there?
Or this...
http://www.mellesgriot.com/pdf/009.22-9.23.pdf
This is the Holy Grail.
Almost because they are unfortunately a little too small.
These have the focus in the inner one!
Find her greater, report it! Thanks!
http://www.mellesgriot.com/pdf/009.22-9.23.pdf
This is the Holy Grail.
Almost because they are unfortunately a little too small.
These have the focus in the inner one!
Find her greater, report it! Thanks!
Guys, you can order anything and the factory will manufacture it for you, it's just a matter of price. But I bet it will be order of magnitude cheaper if you just go to the store and buy top of the line home cinema projector, and a box of spare bulbs for the rest of your life. Or even a box of whole spare projectors.
Expensive suggestion.....
A "top of the line home cinema projector" (Sony Qualia 004) costs approx. $ 27.000 dollars! With 2000 hours life time approx. $ 3.500 costs a single 700 watts lamp (expensive energy, it is $ 0.1334 per hour at 700 watts)!.
Since the projector should run (instead of TV) the whole day, this would be very expensive.
I could not enjoy any film at these costs
.
I know that I cannot compare the Qualia 004 with the do-it-yourself in the image quality.
But it depends for me on the high resolution. If a better screen is available, the previous one simply is exchanged.
This does not go at the purchase beamer.
Native 1080-HDTV is indispensable. We have two main programs (ProSieben-HD and Sat.1-HD) which send in 1080i. In addition, it needs the high resolution for the PC. Your suggestion for certain is not cheap.
Your suggestion is not cheap. It is very expensive.
A "top of the line home cinema projector" (Sony Qualia 004) costs approx. $ 27.000 dollars! With 2000 hours life time approx. $ 3.500 costs a single 700 watts lamp (expensive energy, it is $ 0.1334 per hour at 700 watts)!.
Since the projector should run (instead of TV) the whole day, this would be very expensive.
I could not enjoy any film at these costs
.I know that I cannot compare the Qualia 004 with the do-it-yourself in the image quality.
But it depends for me on the high resolution. If a better screen is available, the previous one simply is exchanged.
This does not go at the purchase beamer.
Native 1080-HDTV is indispensable. We have two main programs (ProSieben-HD and Sat.1-HD) which send in 1080i. In addition, it needs the high resolution for the PC. Your suggestion for certain is not cheap.
Your suggestion is not cheap. It is very expensive.
I meant "top of the line" of popular brands for "regular" people. Something like Panasonic PT-AE900, or Hitachi PJ-200 or Sanyo Z4, either of them terribly beats anything we can build at home, no matter how much we spend on parts.
Do you have any idea how much it would cost you if you order a custom made parabolic mirror of optical quality and size suitable to a 15" LCD? It would cost a fortune. Once I called a company that makes custom optical parts, and asked about 20x18cm front surface mirror. When their calculation reached about 200$ I asked them to stop calculating, but that was only base glass ("special" one as I was told) and aluminium coat, then there would be extra costs of further processing this mirror, I don't remember, something to make the coating more durable, etc., I just didn't want to hang on the phone, as the price was already ridiculous for my application. Your reflector would cost thousands and thousands $.
Regards
Do you have any idea how much it would cost you if you order a custom made parabolic mirror of optical quality and size suitable to a 15" LCD? It would cost a fortune. Once I called a company that makes custom optical parts, and asked about 20x18cm front surface mirror. When their calculation reached about 200$ I asked them to stop calculating, but that was only base glass ("special" one as I was told) and aluminium coat, then there would be extra costs of further processing this mirror, I don't remember, something to make the coating more durable, etc., I just didn't want to hang on the phone, as the price was already ridiculous for my application. Your reflector would cost thousands and thousands $.
Regards
These purchase projectors are useless. The use is far too expensive also there. I would have none joy in films at these costs.
In addition, 1080-HDTV is indispensable.
I never mentioned a "a custom made parabolic mirror of optical quality"! The reflectors shown by me are all catalog product.
$ 200 dollars (168 euros) would be absolutely all right! Of course this was only the beginning. I know the high prices which indicate these manufacturers.
A pressed aluminum reflector suffices. We do not need a picture giving optics like in astronomy.
If somebody can design a reflector here (knowledge and/or software), everybody can try to produce this or to let produce.
If a form and a stamp is produced, one can try to press reflectors with a 12 or 20 tons press ($ 100 or $ 20) from sheet aluminum himself. If the sheet aluminum is very heated up before, it will deform more easily.
A company could produce a reflector (or form and stamp) if on a CNC machine a reflector file exists.
This is cheaper certainly as if an optics company designs and produces effortfully a very complicated reflector.
In addition, 1080-HDTV is indispensable.
I never mentioned a "a custom made parabolic mirror of optical quality"! The reflectors shown by me are all catalog product.
$ 200 dollars (168 euros) would be absolutely all right! Of course this was only the beginning. I know the high prices which indicate these manufacturers.
A pressed aluminum reflector suffices. We do not need a picture giving optics like in astronomy.
If somebody can design a reflector here (knowledge and/or software), everybody can try to produce this or to let produce.
If a form and a stamp is produced, one can try to press reflectors with a 12 or 20 tons press ($ 100 or $ 20) from sheet aluminum himself. If the sheet aluminum is very heated up before, it will deform more easily.
A company could produce a reflector (or form and stamp) if on a CNC machine a reflector file exists.
This is cheaper certainly as if an optics company designs and produces effortfully a very complicated reflector.
I think your on the right track..sorry I cant help..all I can do is search for manufactured reflectors that might fit a 15inch LCD....
This covers a 15 inch LCD Panel
http://www.daybrite.com/day-britehid/hidfixture.cfm?ID=388
This covers a 15 inch LCD Panel
http://www.daybrite.com/day-britehid/hidfixture.cfm?ID=388
This is a transmissive "Reflektor" ???
This "Reflector" is transmissive.
Not realy reflective.
I saw these lamps. There is “hall lights” (translated from "Hallenleuchte", i don't know a englisch word).
The parts are not exact Spots, but possibly I can shift through the source of light the Spot to improve.
Unfortunately I must along-buy the technology. The reflector alone would rather be me. Except I can use the 400W (or 2250W) there USHIO.
This "Reflector" is transmissive.
Not realy reflective.
I saw these lamps. There is “hall lights” (translated from "Hallenleuchte", i don't know a englisch word).
The parts are not exact Spots, but possibly I can shift through the source of light the Spot to improve.
Unfortunately I must along-buy the technology. The reflector alone would rather be me. Except I can use the 400W (or 2250W) there USHIO.
- Status
- Not open for further replies.