[rob47v]

The question is simple could an LED bulb of same power consumption and operation rating be fabricated to replace present bulbs on present run projectors? And if not why not? It seams simple to me the life and brightness would be out of this world, but there again sales would go to the floor!

 

[Jason Turk]

Maybe if they could make an LED with the same light signature as a UHP lamp. Problem is they usually are not, so the color gammut would be way off. My guess though is that the time and development it would take to do that probably wouldn't justify the end as eventually they'll just make them all with LED's. My guess of course.

 

[Cine4Home]

LED projectors work with three seperate LEDs for each primary color. This allows a huge color gamut (way larger than the one of Sonys Xenon for example) and in conjunction with a good CMS, you can get accurate colors according to older videostandards too.


Also, the red defecit of UHP-Lamps is non existant with an LED-projector, so no brightness and contrast decrease because of calibration occurs.


All above is already proven by the actual Vivitek LED projector. We expect it to get even better with future models once the new technology catches on.



But it is unlikely that it will be possible to upgrade older projectors. It will not work with the dichroic mirrors, cooling paths, light emitting size, etc. etc. Also, you would have to modify the whole power unit of the projector, as these LEDs need low voltage (4V) but up to 30 Ampere! In addition, they are pulsed... and so on and so on...


Sorry, you have to wait and buy a new projector when you want LED

Regards,

Ekkehart

 

[trailergod]

this is getting exciting !!!!.. cant wait for LED projectors to finally be mass produced...

 

[Jason Turk]

Soon my friend....soon.

 

[xb1032]

In most cases once a company has release a product you won't see any upgrades to a product unless a company can benefit from it financially. So I wouldn't expect this to happen.

 

[Jason Turk]



Quote:
Originally Posted by xb1032 /forum/post/16835536


In most cases once a company has release a product you won't see any upgrades to a product unless a company can benefit from it financially. So I wouldn't expect this to happen.

Considering the lamps are 3rd party, I agree.

 

[surap]

In the future, I hope it will lead to a fanless machine.

 

[Bing]

So is LED the most likely next breakthrough in HT PJs? Are there any "game changers" on the horizon? I'm with a 720p (BenQ 8720) now but I'm hesistant to dump 5K on a 1080p, just for higher resolution. I like to make big upgrades, but not videophile enough to get into CH setups. If they could make a lamp with constant output thruout its life, last for 20000+ hours, and nearly silent, I'd be onboard.

 

[SteveMo]



Quote:
Originally Posted by Bing /forum/post/16837964


So is LED the most likely next breakthrough in HT PJs? Are there any "game changers" on the horizon? I'm with a 720p (BenQ 8720) now but I'm hesistant to dump 5K on a 1080p, just for higher resolution. I like to make big upgrades, but not videophile enough to get into CH setups. If they could make a lamp with constant output thruout its life, last for 20000+ hours, and nearly silent, I'd be onboard.

See this thread about the BenQ W30000. Also soon is the new JVC projector so I expect some will be upgrading soon, and refurb/used 1080P projectors will be available at less cost. Some other projector making companies may follow and competition could start occurring. This would be the good news IMO.

 

[Cine4Home]



Quote:
Originally Posted by surap /forum/post/16837211


In the future, I hope it will lead to a fanless machine.

This will be possible with liquid cooling, just like in PCs...


Not so cheap though..


Regards,

Ekkehart

 

[No_U-Turn]



Quote:
Originally Posted by SteveMo /forum/post/16839565


See this thread about the BenQ W30000. Also soon is the new JVC projector so I expect some will be upgrading soon, and refurb/used 1080P projectors will be available at less cost. Some other projector making companies may follow and competition could start occurring. This would be the good news IMO.

I'm hoping the hype about LED might do for 1080p "bulb pj's" prices, what 1080p did to 720p pj's prices... LOL

 

[Jason Turk]

I think the next big thing that most of us will care about is new lamp technology (LED, Laser, whathaveyou...). There will be more and more 4k units, but for HT use that isn't yet needed so not something we'll really care about for a while (plus those are buckoo bucks).

 

[Brandon B]



Quote:
Originally Posted by Cine4Home /forum/post/16839734


This will be possible with liquid cooling, just like in PCs...


Not so cheap though..


Regards,

Ekkehart

Great, so our PJs will gurgle instead of whining.

 

[Cine4Home]

One thing is for sure: These light power LEDs definately need a good cooling system. But you can cool them like processors...


Regards,

Ekkehart

 

[PerryD]



Quote:
Originally Posted by Cine4Home /forum/post/16841993


One thing is for sure: These light power LEDs definately need a good cooling system. But you can cool them like processors...

I don't quite understand this statement, aren't the main benefits of LED lighting, not only extremely long life, but also low power and less heat generated.

 

[Cine4Home]



Quote:
Originally Posted by PerryD /forum/post/16847212


I don't quite understand this statement, aren't the main benefits of LED lighting, not only extremely long life, but also low power and less heat generated.

Less heat, but still so much, that they need an effecient cooling system. Although they have a better light effeciency / W, they get very hot.


It is a common missunderstanding that LEDs dont get hot.


Regards,

Ekkehart

 

[euryd]

I just bought some LED light bulbs for use in my home. The bulb is rated at 40W light output but only uses 1.5W of power. They are amazingly efficient. After being ON for several hours, the bulb was only slightly warm. Actually, I would not even call it warm, I would call it slightly elevated from cool.


Even the CFL light bulbs were too hot to touch, these LED lights are amazing.

 

[Kevin McCarthy]

"Soon my friend....soon."


Methinks Jason is privy to some exciting news... and I suspect that it isn't just Vivatek.


Kevin

 

[mkoss]

LED's are not infrared emitters(heat) like the standard bulbs which generate most of their heat in the infrared region and therefore is radiated and removed with fan cooling. The LED heat is conducted and must be removed via heatsinking of some form. For example if an LED to produce X lumens requires a current of say 6 amperes and it's foward voltage at this current is 4 volts. That's 24 watts of heat that must be removed in order to keep the junction temperature low enough to achieve the targeted reliability otherwise the LED will fail in short order. LED's are efficient Lumens producers but still generate considerable heat in the process that needs to be removed.