AVS Addicted Member
Join Date: Dec 2000
Location: brookeville, maryland, usa
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 63 Post(s)
I don't anybody claimed it was new and improved. The new forum owners had to change platforms and they went back to a platform used by earlier owners. It has pluses and minuses.
I think the term lit by laser is a stretch here BUT the prime objective of using a laser in the first place (eliminating the bulb(s) and the need to change it or them, has been eliminated. A small blue laser provides the blue light and provides the ignition for spinning phosphior wheel (it needs to spin so that the re is more phosphore for the beam to hit and to prevent overheating of the wheel (and its all about employing a wide variety of tricks etc to eek out 20,000 hours from the wheel)). The spinning wheel becomes the equivalent of a large bulb issueing white light. Better than a bulb because it lasts way longer and doesn't deteriorate very much in light output. From there the machine is the same as bulb machine. Polarizers and diachromatic filters to provide the LIGHT (red and green, the laser does provide the blue directly but blue is insignificant compared to green and even red. Other advantages of laser illumination are not obtained. Mainly the ability to use a much cheaper lens and the ability to send the light to the projector from remotely located sources and better blacks due to in a pure laser machine the ability to shut the laser off and instantly back on. A cheap and rather elegant solution to increasing light source longetivity and lumens. No speckle issues either.
But in essence its a big white bulb and the brighter it is the worse contrast from our chip technology will be. Reduce the lumens out and the contrast improves. the availability of this engine is essentially available to all projector manufacturers. What is needed, as is always needed, are better performing chips and here lies the true promise, whoops maybe wrong word based on the past performance of Epson in bringing its own Lcos type chip to market. Sony has had phosphor wheel projectors for several years now and is on its second model generation. It has 4000 lumens will last for a long long time without service but it has fecal for contrast and blacks. The curse of make it bright vs making great blacks.
call me at: 240 876 2536
Last edited by mark haflich; Yesterday at 03:19 PM.