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OPTOMA ML500 LED 1280x800 - Page 3

post #61 of 680
Not only do you have to buy a new bulb for a bulb based projector after 2000-3000 hours, but the color wheel bearings can go bad or the color wheel it's self can shatter.
Besides ? you get better and more vibrant colors with a LED projector.
post #62 of 680
MCaugusto ? at some point in time these companies have to realize the fact in that what is actually practical in going smaller in size with these projectors.
Yes, we under stand that the market is towards the conference room traveling business person who can put these projectors in their briefcase and won't be so loaded down with weight and room where it's a griefcase.
However, how much small do we really need these Pico projectors ?
They have to so small now that it can fit in a cell phone ?
These new 500 Lumens projector seem that they are going in the other direction in that they are getting bigger again accounting for the internal power supply and other things.
Do you remember years ago when companies boasted about how their speakers are cooled with some kind of liquid in their speakers ?
Would there be a way they can isolate the power supply and cool it with a heat sink as they do with the CPUs and some kind of coolant that is sealed ?
Do they put some kind of metal separator between the power supply and the other components in these new projectors ?
What size and weight would a projector be satisfactory with most people ?
post #63 of 680
DLPProjectorfan >>> If i may ask, in which ways did you find your LG HX300G lacking ? Overall contrast ? Onscreen brightness on what screen size ? Colors ? Video processing ?
Just wondering, because i still find myself so satisfied with mine...
post #64 of 680
Over all brightness, no matter how I adjust it it just seem dull.
Movies are ok, but, it does not have the clarity for video games.
MCaugusto ? I was reading on Luminus Devices web sight and I saw that for the Pico projectors you have the SBT-16 PT-39 PT-54 and for the professional projectors you have the PT-54 PT-120 PT-121 .
The PT-54 is based on the micro displays from 0.4" to 0.55" and the Asian guy on that video that someone posted that was at the Electronics show back in January said that right now the Pico market is sitting on top of the .45 micro displays but, TI introduced the new HD 720 and 1080 P chipsets.
So ? we would guess that these new projectors that are coming out next month and in October will be based on the 0.65" to 1" format ?
The PT-120 will be based on the micro display 0.65 " to 1 " .
So ? we can take a educated guess that these new projectors have the PT-120 and not the PT-54.
If we can find out what the micro display size is then we will know for sure that Luminus Devices light engine they are using.
post #65 of 680
If these new projectors are coming out with the 0.65 " micro displays and with the PT-120 ? then ? these will be moving up from the Pico to the intermediate market to professional projectors.
Are we there yet ? can we say ? these new projectors with the 720 P 0.65 " micro displays with the PT-120 is the game changer ?
Will we be satisfied with the HD 720 P and sit and wait and enjoy the 720 P projectors and the heck with the companies dragging their feet getting the 1080 P Projectors with their high cost ?
what do you think ?
post #66 of 680
I was looking on some Russian web site of the Optoma ML-500 and the specs, Display DLP 1x" ??
I went to Projector Central and they have a PDF file you can open for the pre-launch data sheet.
It says it will be able to produce a clear image up to 120 "
Still have not found out the specs on the size of the micro display yet.
post #67 of 680
Quote:
Originally Posted by DLPProjectorfan View Post

If these new projectors are coming out with the 0.65 " micro displays and with the PT-120 ? then ? these will be moving up from the Pico to the intermediate market to professional projectors.
Are we there yet ? can we say ? these new projectors with the 720 P 0.65 " micro displays with the PT-120 is the game changer ?
Will we be satisfied with the HD 720 P and sit and wait and enjoy the 720 P projectors and the heck with the companies dragging their feet getting the 1080 P Projectors with their high cost ?
what do you think ?

no all wrong, the .65 is not a pico dlp and they arnt putting pt 120,s in pocket pj,s.
post #68 of 680
The ML500 will be using the same pico chip that is in the Qumi. I have not heard any solid evidence that points to it using the PT120 LEDs, everything is just conjecture. Not sure why they would be using the PT120 since they are made for the larger DLP chips.
post #69 of 680
pt 54
post #70 of 680
The PT120 is almost twice the size of the PT54, it pulls more than twice the amps, and has 6 times the thermal resistance. The PT120 will need a much more robust cooling system in comparison with the PT54. Not sure how they can fit all that into a pico projector only 1.7" tall.
post #71 of 680
Quote:
Originally Posted by eat meat View Post

no all wrong, the .65 is not a pico dlp and they arnt putting pt 120,s in pocket pj,s.

no all wrong, the .65 is not a pico dlp and they arnt putting pt 120,s in pocket pj,s


That's what I said, with TI releasing their new HD 720 P and 1080 P chip set they will be moving up from the Pico to a intermediate projector and professional projectors.
post #72 of 680
That's why I am trying to search for more information on the Optoma ML-500 to see what the actual micro display size is.
post #73 of 680
Quote:
Originally Posted by DLPProjectorfan View Post

no all wrong, the .65 is not a pico dlp and they arnt putting pt 120,s in pocket pj,s


That's what I said, with TI releasing their new HD 720 P and 1080 P chip set they will be moving up from the Pico to a intermediate projector and professional projectors.

TI has had HD 720p and 1080p chips for a while now in entry level and pro level projectors. The pico 720p and the upcoming pico 1080p chips are what's new.

Are you under the impression that these 500 lumen projectors are using a different 1280x800 DLP chip than the Qumi?
post #74 of 680
Here is a comparison between the new pico HD chips and the ones used in home theater projectors.

post #75 of 680
Quote:
Originally Posted by action_jackson View Post

The PT120 is almost twice the size of the PT54, it pulls more than twice the amps, and has 6 times the thermal resistance. The PT120 will need a much more robust cooling system in comparison with the PT54. Not sure how they can fit all that into a pico projector only 1.7" tall.

See this is what I don't understand. I thought LEDs were much more efficient than conventional.
post #76 of 680
Are these all going to have the diamond shaped pixels? I do not like the look of them at all!
post #77 of 680
That's what I am trying to find out the size of the micro display for these new 500 Lumens projectors.
If you go to Luminus Devices website the specs for the LED chips show that the PT-54
0.4" to 0.55" are the micro displays where the PT-120 0.65" to 1" are for the micro displays.
That's what we need and want to find out the actual size of the micro displays of these new HD 500 Lumens projectors.
post #78 of 680
I emailed Luminus Devices yesterday asking for clarification with this matter of which LED chipsets are being used in these four upcoming 500 lumens projectors as well as in the Vivitek Qumi and i mentioned AVS Forum more than once in the email; However, based on previous experience, i would be surprised if the company replies to my inquiries.
I don't even expect the USA online tech support of these various pj manufacturers to know the answer to such obvious question and it wouldn't surprise me if the only unequivocal source for this answer being located at home headquarters in the "Far East"...
post #79 of 680
This is great and all, I just hope that the dam thing doesn't have rainbows as bad as the LG300 (which I had for a brief moment). These new LED projectors have so much going for them, but I'm SO sick and tired of people saying no color wheel = no rainbows. That is complete and utter bullsh*t.

They theoretically have the ability to cycle fast enough to greatly reduce the RBE to a nonexistent level. WHY HASN'T THIS HAPPENED YET????
post #80 of 680
Hi all,

I'm new to projectors and the forums, but I am thinking of getting the LG HX300G as my first projector with plans to have it last me indefinitely, as it is a big investment for me financially.

From all the research I have done, it sounds like a great projector, so I am concerned when I see comments like DLPProjectorfan's about it not being bright, and cbaseuser's disappointment with rainbows...

From owners/users of the HX300G, is this unit a good choice? I plan to use it for movies and displaying photos, as I am a photographer. I have read that this projector has quite good color, so it sounds like a good bet.

It is tempting to wait for all these 500 lumens ones, but with projected dates of October etc, add on time for late release and then time for them to be tested and reviewed to hear if they live up to the hype and quality, I don't want to wait that long to get a projector, lol!

I also just saw on the forums mention of the Casio XJ-A240, but was reading some unfavorable things about decreased brightness the more use it got...
post #81 of 680
Quote:
I also just saw on the forums mention of the Casio XJ-A240, but was reading some unfavorable things about decreased brightness the more use it got...
lol, its been out a year,and the lowest lumin one 2000 lumens and the brightest is 3500 lumens and no one that I know of in these forms had reported decreased brightness.
can you post a link?I own a 240 and they use a led in there that is luminus,same brand as all these led pj,s.
post #82 of 680
Sorry my mistake, it wasn't a post in the forums, it was a comment on the Projector Central review page: http://www.projectorcentral.com/casi...tor_review.htm

So would you recommend this projector over the LG HX300G? I saw some other related posts in the forums about the two, so I will read those as well...

Hopefully I will find the info in one of the other threads, but just in case, how is one supposed to compare brightness with 270 lumens for the LG to Casios 2000?
post #83 of 680
Quote:


It is important to note that this extended test was done running the units 24/7 until they accumulated 200 hours.

.....who does this
go to
http://www.cine4home.com/tests/3-tes...ad-of-uhp.html
or see what art thinks(hes a legend when it comes to PJ,s)
http://www.projectorreviews.com/casi...250v/index.php

pj central often gets things just plain wrong-I have noticed this on some of the pjs I own-If its not a ht pj they seem rushed-I own/have more than a handful of pjs(have3 that use led and owned 2 others)
post #84 of 680
Quote:
Originally Posted by eat meat View Post

.....who does this

Actually that is a fairly benign way of reaching 200 hrs since most wear and tear in electronics occurs due to changes in temperature, and this type of aging maintains the electronics at fairly stable temperatures. Even in the context of a lamp, it would age far faster if it had to be turned on and off 100 times before reaching 200 hrs rather than being left on for 200 hrs straight.
post #85 of 680
Quote:
Originally Posted by Raul GS View Post

Actually that is a fairly benign way of reaching 200 hrs since most wear and tear in electronics occurs due to changes in temperature, and this type of aging maintains the electronics at fairly stable temperatures. Even in the context of a lamp, it would age far faster if it had to be turned on and off 100 times before reaching 200 hrs rather than being left on for 200 hrs straight.

no, pj manufactures state not to run pjs 24-7.
post #86 of 680
Quote:


"Do not operate the projector continuously without rest. Continuous use may result in shortening the lamp life. Turn off the projector for about an hour in every 24 hours."

pretty common in instructions.I would love to see some concrete lamp strike theory-if someone could post some.
post #87 of 680
Quote:
Originally Posted by MCaugusto View Post

I emailed Luminus Devices yesterday asking for clarification with this matter of which LED chipsets are being used in these four upcoming 500 lumens projectors as well as in the Vivitek Qumi and i mentioned AVS Forum more than once in the email; However, based on previous experience, i would be surprised if the company replies to my inquiries.
I don't even expect the USA online tech support of these various pj manufacturers to know the answer to such obvious question and it wouldn't surprise me if the only unequivocal source for this answer being located at home headquarters in the "Far East"...

It took a week but I finally received an answer from Luminus regarding the "color cycling speed" of their LEDs. After being bounced to Asia the final email was from Massachusetts.

The response from Luminus:

To answer your question: LEDs used in projection systems are driven at a frequency set by the system. The LEDs themselves can be driven at higher frequencies.



So, kind of ambiguous but my interpretation of this is that "yes, the pulse rate is variable and set by the manufacturer."
post #88 of 680
Quote:
Originally Posted by Sisyphus View Post

It took a week but I finally received an answer from Luminus regarding the "color cycling speed" of their LEDs. After being bounced to Asia the final email was from Massachusetts.

The response from Luminus:

To answer your question: LEDs used in projection systems are driven at a frequency set by the system. The LEDs themselves can be driven at higher frequencies.



So, kind of ambiguous but my interpretation of this is that "yes, the pulse rate is variable and set by the manufacturer."

hz=per second,leds can cycle faster than ever needed. 60 or 120 times a second per color is what a led pj does.
post #89 of 680
Quote:
Originally Posted by Sisyphus View Post

It took a week but I finally received an answer from Luminus regarding the "color cycling speed" of their LEDs. After being bounced to Asia the final email was from Massachusetts.

The response from Luminus:

To answer your question: LEDs used in projection systems are driven at a frequency set by the system. The LEDs themselves can be driven at higher frequencies.



So, kind of ambiguous but my interpretation of this is that "yes, the pulse rate is variable and set by the manufacturer."

So the promise of LEDs eliminating color fringing turns out to be a fallacy. Long live LCDs or I guess LCOS.
post #90 of 680
Quote:
Originally Posted by Bsims2719 View Post

So the promise of LEDs eliminating color fringing turns out to be a fallacy. Long live LCDs or I guess LCOS.

no you can drive them faster than any lcd or lcos.
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