LG ProBeam: 1080p laser projector at 2000 lumen

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LG ProBeam: 1080p laser projector at 2000 lumen

Postby Chief Blur Buster » 20 Dec 2016, 12:54

What a beautiful work of art.

I wonder if this is a scanning-based laser projector capable of low persistence.

(Not all laser projectors are direct scanning.... Some reflect off a DLP chip).

If so, 1080p, zero lag, AND low persistance.
In theory, at least. Not confirmed... but if so -- competition gamer's dream? Fingers crossed.

This definitely needs a test!

http://arstechnica.com/gadgets/2016/12/ ... -footprint

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Re: LG ProBeam: 1080p laser projector at 2000 lumen

Postby thatoneguy » 20 Dec 2016, 19:11

Sorry to burst your bubble but there's no chance that's a laser scanning projector
It's most likely DLP or LED with Laser as Light Source like all other high-end Laser Projectors out there
Microvision(and some of it's partners like Celluon, Sony, STM) are the only ones who are working on them

I recommend you follow this subreddit https://www.reddit.com/r/MVIS/ to get news on the tech(bear in mind though that developments on this tech are extremely slow)
The latest product from Microvision does 55 lumen at their "claimed" resolution of 1920x720

According to Karl Guttag who tested it...it's more like 360p and it even is sharper on the centre while not as sharp at the sides(it's a compromise)
http://www.kguttag.com/2015/06/02/cellu ... echnology/
http://www.kguttag.com/2015/06/06/cellu ... y-revisit/

Now mathematically if they used 6 times as many Laser Diodes they could get to true 1080p@60hz at the same lumen rate but they're not in the market for traditional projectors

If their persistence really is at 15 nanoseconds as they claimed then that explains the troubles with scaling this technology

If you think about it
A PicoBit is close to a typical consumer CRT(in paper not in overall quality) that works similarly to a CRT(i.e it's a scanning display) that fits in your pocket and that in itself is impressive but that's about it
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Re: LG ProBeam: 1080p laser projector at 2000 lumen

Postby nuninho1980 » 21 Dec 2016, 06:09

I'm interested. :D New 1080p laser is for excellent multimedia at 50Hz (due to the source 50i interlaced video in Portugal) and for gaming at minimum 60Hz - this projector is similar to CRT monitor. :)
My PC specs:
CPU: Core i7-4790K
RAM: 2x8GB DDR3@2400MHz
MB: ASUS Z97-Pro Gamer
GPU: EVGA GTX 980 Ti SC+ NEW!! :D
Opt. disc: LG BD-RE writer BH16NS40
HDDs: WD 1TB + 2TB ext-USB
PSU: NOX 1 kW
Monitor: CRT 19" Samsung SM 957MB :D
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Re: LG ProBeam: 1080p laser projector at 2000 lumen

Postby thatoneguy » 21 Dec 2016, 13:35

nuninho1980 wrote:this projector is similar to CRT monitor. :)

It is NOT
This is not a Scanning Laser Projector

This is a Laser DLP(that uses Laser as light-source) most likely
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Re: LG ProBeam: 1080p laser projector at 2000 lumen

Postby RLBURNSIDE » 31 Dec 2016, 15:42

It's blue laser + yellow phosphor (to generate red and green) therefore they can't be doing direct RGB laser scanning, since they lost the ability to modulate the colours independently due to only having blue lasers.

That also guarantees it's using a physical colour wheel to modulate the RGB sub-pictures independently on the DLP's DMD, which is unfortunate for those who see rainbows.

The high lumens and long-lifespan make this somewhat interesting, but it won't be low persistence, however DLPs have the best motion handling characteristics of any projector tech (aside from RGB laser scanning).

Given that it's from LG that also probably means it doesn't have 120hz support at 1080p (I tried finding it in the manual but they don't list the input refresh rates by resolution, weird omission).

It also probably doesn't do 3D given how LG has dropped the ball on that too. In short, this is a "do not buy" for me, no matter how "exciting" lasers are. TBH I'd rather a refresh of my old w1070 with a lamp with a better HDMI input port to accept 1080p at 120hz in 10-bit (DLPs have been able to do 10-bit natively for many years, even the old w1070). The main limitation is HDMI bandwidth not allowing 10-bit at 1080p60. You can get around that using the VGA or component inputs, since they are analog and therefore greater bit depth is effectively "free" (modulo signal-to-noise ratio losses for analog connections vs digital.)
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Re: LG ProBeam: 1080p laser projector at 2000 lumen

Postby nuninho1980 » 04 Jan 2017, 05:02

thatoneguy wrote:
nuninho1980 wrote:this projector is similar to CRT monitor. :)

It is NOT
This is not a Scanning Laser Projector

This is a Laser DLP(that uses Laser as light-source) most likely
Thank you but :? :(
My PC specs:
CPU: Core i7-4790K
RAM: 2x8GB DDR3@2400MHz
MB: ASUS Z97-Pro Gamer
GPU: EVGA GTX 980 Ti SC+ NEW!! :D
Opt. disc: LG BD-RE writer BH16NS40
HDDs: WD 1TB + 2TB ext-USB
PSU: NOX 1 kW
Monitor: CRT 19" Samsung SM 957MB :D
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