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OK, WHAT'S DLP?!

digital light projection.

Instead of using a CRT to scan left to right making a moving image there are 800 thousand or so tiny mirrors the reflect or don't reflect light to form a pixel. A bright white light is shined upon those mirrors that are on a single chip.

To make colors a "color wheel" spins to produce red, green, blue. DLP is based on throwing light so it is a projection technology and can be rear-projection with a mirror, rear projection or front projection.
 
www.dlp.com

It's basically a chip composed of small mirrors. You shine a bright line on the chip, and it reflects back an image based on the position (and speed that the mirror "switches") of each of the hundreds of thousands of mirrors.

A DLP system can either be front or rear projection.

View the technology demo here.
 
Originally posted by: KnightBreed
www.dlp.com

It's basically a chip composed of small mirrors. You shine a bright line on the chip, and it reflects back an image based on the position (and speed that the mirror "switches") of each of the hundreds of thousands of mirrors.

A DLP system can either be front or rear projector.
Click to expand...

hhhmmmmmm. You mean Beamer-style and rear projector style? If it's a rear projector, the TV is biiiiiiiig and heavy right?
 
DLP works by processing light in coordination with a color wheel, a wheel with different panes of coloredand transparent material.

The DLP Dhip by Texas Instrumensts, which houses all the "tiny mirrors" that Spidey mentioned, processes white light so that it can pass through the color wheel at the appropriate time, and then hit the screen.


 
dlp rear projection sets are very light because it is simply some electronics and the "light box" which houses the lamp, color wheel and DLP chip.

Big and heavy would be a CRT based RPTV.
 
Originally posted by: spidey07
dlp rear projection sets are very light because it is simply some electronics and the "light box" which houses the lamp, color wheel and DLP chip.

Big and heavy would be a CRT based RPTV.
Click to expand...

but how come that Ameesh's DLP TV looks like a rear projection TV?
 
Originally posted by: ndee
Originally posted by: KnightBreed
www.dlp.com

It's basically a chip composed of small mirrors. You shine a bright line on the chip, and it reflects back an image based on the position (and speed that the mirror "switches") of each of the hundreds of thousands of mirrors.

A DLP system can either be front or rear projector.
Click to expand...

hhhmmmmmm. You mean Beamer-style and rear projector style? If it's a rear projector, the TV is biiiiiiiig and heavy right?
Click to expand...
Yes, it can be both. The rear projector televisions with DLP are actually much lighter and thinner than regular CRT-based rear projectors.
 
Originally posted by: ndee
Originally posted by: spidey07
dlp rear projection sets are very light because it is simply some electronics and the "light box" which houses the lamp, color wheel and DLP chip.

Big and heavy would be a CRT based RPTV.
Click to expand...

but how come that Ameesh's DLP TV looks like a rear projection TV?
Click to expand...

it is a rear projection TV. Light is reflected by a mirror onto the screen, exactly like a CRT based RPTV.

But with DLP it uses said lamp, color wheel and chip instead of separate red/green/blue cathode ray tubes.

 
Originally posted by: spidey07
dlp rear projection sets are very light because it is simply some electronics and the "light box" which houses the lamp, color wheel and DLP chip.

Big and heavy would be a CRT based RPTV.
Click to expand...

Yeah..especially because

The phosphorus/cathode ray tube setup needs to have a vacum(pressurized compartment), so for flat screens, the glass needs to be as thick as hell to keep its shape.....not to mention the weight of the electron gun assembly.
 
Originally posted by: ndee
Originally posted by: KnightBreed
www.dlp.com

It's basically a chip composed of small mirrors. You shine a bright line on the chip, and it reflects back an image based on the position (and speed that the mirror "switches") of each of the hundreds of thousands of mirrors.

A DLP system can either be front or rear projector.
Click to expand...

hhhmmmmmm. You mean Beamer-style and rear projector style? If it's a rear projector, the TV is biiiiiiiig and heavy right?
Click to expand...

no mine is extremely light, i can lift it myself.
 
Can you imagine the technology behind 800,000 tiny mirrors switching positions, and syncing up with a color wheel spinning to make a beautiful HD picture??
I have a NEC LT150, shooting on a 8 foot wide screen. It is DLP and I love it, hardly any screen door unless you are 3 feet away from it, I don't notice the rainbow effect hardly ever anymore...
 
Originally posted by: Murphyrulez
Can you imagine the technology behind 800,000 tiny mirrors switching positions, and syncing up with a color wheel spinning to make a beautiful HD picture??
I have a NEC LT150, shooting on a 8 foot wide screen. It is DLP and I love it, hardly any screen door unless you are 3 feet away from it, I don't notice the rainbow effect hardly ever anymore...
Click to expand...

let's not confuse ndee anymore by using words like "screen door" and "rainbows".

🙂
 
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