data/text/DLP4/900216

Lost of 3D sync using DLP-Link on a laser projector

I'm having problems locking to a 3D movie image with active 3D glasses (XPAND & Ultra-clear DLP glasses) and a blue laser projector using RGBY wheel. I tried to find help info on DLP-Link, but find that this mode is proprietary with TI. Projector produces correct double image (left & right eye mixed) on screen, but glasses drift in sync about every 4-5 minutes. I'm wondering about the DLP white flash might be from the "Y" part of the wheel and there may need to be a color filter over the sensor in the glasses. illumination from the projector is between 3500 to 4000 lumens onto a 8 foot wide screen in 1920x1080 resolution. Previous projector before the upgrade to a laser model worked fine in 3D with a RGBCMY wheel, but was only 1200 to 1800 lumens. Any ideas to solve this problem? Please advise.

I am not aware of any particular color sensitivity in any DLP® Link(TM) glasses. There isn't any reason that they should have a sensitivity to yellow. DLP Link is not color dependent. DLP Link pulses are typically red or blue, although they can be any color. I would not expect yellow to be a problem. If you want to know more about how it works, please see this post; there is a reference there to details on DLP link. <secret URL>/support/dlp/f/94/t/663116 . Hopefully that is helpful. - Gary