[GRA_PELAYO]

Hello - I am new to the forum but "old" to video projection, I will soon include pictures and results of my experience with the use of 5-inch pannels.

[GRA_PELAYO]

Look my proyect in this pictures, working proyector in a light room and finished proyector:

[GRA_PELAYO]

Image

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•  0008_IMG_2.JPG (35.77K)
  Number of downloads: 163

[GRA_PELAYO]

Finished proyector

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•  0002_IMG.JPG (60.08K)
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[sidneyalliance]

great result for a 5" lcd.
I'm new in the forums but old with projector too.
My english wasn't good enogh to write before. I think still not good, but I'm writing anyways
I started in 2002 a 5" lcd but not get impressive results.

Can you share more info about you components and box?

[GRA_PELAYO]

I´m using a 5 inch pannel with 640 x 480 resolution and a 300 watts lamp.

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•  0014_IMG.JPG (78.75K)
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[dave123]

very bright but if you want it clearer you might consider doing the vga mod.

http://www.bit-tech.net/article/136/

esta muy iluminoso pero si lo quieres mas claro haz el mod para connectar lo con el cable (vga) para monitor.

[DR_BEV]

very nice work.

i believe thats the original sony psone LCD panel?

[GRA_PELAYO]

I'm using 5.25 EF Triplet lens, 3 fresnel lens of 11 EF, 300 watts ELH HALOGEN lamp, Sony PSone lCD panel.

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•  0012_IMG_2.JPG (65.62K)
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[KingOfSwords]

Wow...I was just considering using masonite to enclose my next project...thin, light, inexpensive, easy to work with. I guess it stands up to the heat of the 300watt lamp without too much difficulty?

You mentioned 3 fresnels...how are they placed exactly?

I like how you used quarter round for the framework.

[krackato]

That looks really good for a 5" lcd, but aren't you losing a ton of light through that front placed fan? Not to mention that's gotta be messing with the quality of the image.

I'm new to projectors so maybe I'm wrong.

[junkmanDave]

Can you post another screen pic with the lights off so we can see the contrast better? The PJ looks to be about 30" long based on those floor tiles; can you tell us the actual dimensions?

[GRA_PELAYO]

Previous to this system I have constructed 3 more, therefore, this it is the product of adjustments to predesigns.

the measures of proyector are: 11.7” x 16.0” x 7.4”

Fresnel is clouse-knit to the LCD, they are not seen in the photo which there I am including, but I will include another one.

To position the fan to the front, nonaffection at all the performance of the 300 watts lamp.

I have proven the projector working more than 5 hours of continuous, and the cooling system works perfectly.

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•  0017_IMG_2.JPG (48.55K)
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[GRA_PELAYO]

I consider east efficient super projector and of low cost of construction, then all their components are very cheap and of easy acquisition in Mexico, This way monitors LCD are even very expensive, I have not found electronic balastras, in return is very easy to find ELH Halojen lamps of 300 watts, although its limitation is that single 35 running hours last continuous, but he is very easy to change

The projector is extreme light and transportable, but I am working in replacing the Halogen lamp by a lamp of the type Metal Halide, this then last one is of 400 watts and superlong duration, although the weight will be increased enormously, then since I have said in Mexico I have not found electronic balastra


Also I will construct the projector of Lumenlab, then I consider that although but expensive that the one that I constructed, he is perfect in definition and with some adjustments to the reflector it will be of super luxury. Soon I will buy 15"monitor LCD to initiate its construction.

I have designed a system of Triplet lens of 6,0 EF that soon I will produce in series. Also I think to construct a Triplet lens of 12,0 EF to use it with
15" LCD (in Mexico it is almost impossible find it)

For a long time it has been designing and I was selling through Popular Mechanics, a system of lens DUPLET (2 lenses) of 12,0 EF to project with 14" TV

[GRA_PELAYO]

Pictures with the lights off

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•  0003_IMG_2.JPG (34.35K)
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[GRA_PELAYO]

Other pic light off

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•  0005_IMG.JPG (35.38K)
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[GRA_PELAYO]

My idea is to sell in Mexico the planes and instructions and the lenses to arm these projectors, and soon I will do it through MercadoLibre.

Advantages of 5” projector:

Extreme light,very economic Components, Use the LCD Panel 5"of Sony
with definition VGA, 640 xs 480 pixels do not have any problem to project TV images, videocasetera, DVD and VCD because they are compatible with his resolution.



Disadvantages:
It is not of high resolution as PC monitors LCD, do not project PC
images

[Spat]

What's you max image... diagonal...

[GRA_PELAYO]

Spat, on Aug 10 2004, 07:04 PM, said:

What's you max image... diagonal...

The screen that I am using is of approximately 80", by lampara it is possible to amplify in dark ROOM until 150"" and it is even seen very well

[sbockh01]

What changes to the lumenlab reflector design are you suggesting?

[GRA_PELAYO]

sbockh01, on Aug 10 2004, 08:33 PM, said:

What changes to the lumenlab reflector design are you suggesting?

THIS BEING USED The LAMP Outside the REFLECTOR And HAS LOST OF
LIGHT. THE PROPOSED DESIGN IS THE LAMP TOTALLY WITHIN THE REFLECTOR TO AVOID LOST OF LIGHT

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•  LOSS_LIGHT.JPG (41.11K)
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[GRA_PELAYO]

I WILL TRY TO SPECIALLY CONSTRUCT A REFLECTOR FOR LAMPARA EYE
MULTI-METAL, THAT IT TAKES ADVANTAGE OF THE GREATER AMOUNT LIGHT PRODUCED BY THE LAMPARA. THE SERIOUS DESIGN AS I SHOW IN THE FOLLOWING PICTURE

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•  OTHER_REFLECTOR.JPG (28.29K)
  Number of downloads: 35

[GRA_PELAYO]

dm148300, on Aug 11 2004, 01:40 AM, said:

The problem with that kind of design, I would think (correct me if you think I'm wrong) would be that you can't keep a reflector that close to the bulb without keeping an awful lot of heat from being circulated out.

The enclosure would keep more heat inside your box. It would hinder the airflow from the fan.

just a thought,
-Dave

In lampS of projection that has the integrated reflector, the reflector is of the type that I propose, it is to say this fact in such a way that they almost reflect towards
screen LCD the 100% of the light. the piece that emits the light this totally stuck to the reflector.
On the other hand, the cooling system (fan and tuneles of wind) must be designed
in such a way that a great amount makes sure that fresh air between a
the projector and circulates around LCD panel and beats front to
lamp and its reflector, and to assure that the hot air leaves the projector.

These aspects consider them in my design of 5", which allows that my projector can be working per almost limitless time (single limited by the duration of lamp, that it is of 35 hours)