Flcos, DMD, and more for HMD
Posted: Sat Jun 25, 2011 4:12 pm
Hi all,
I recently stumbled onto this board and have been back and forth the last week. I'm a kind of person with numerous projects and not enough time so who know's if I'll ever build anything.
I was on digikey the other day and it looks like you can order SVGA FLCOS imagers for <100 dollars canadian. qHD (960x540) is on the way. They are non-stock but do not have any miniumum, I've yet to contact digikey. They also have 852x480 and a few others. I need to sign up to get the datasheet on these and was patiently waiting yesterday on approval from Micron. They are quite small, so for HMD use but may need some decent optics which from the sounds of it is a problem. They work like DLP micro projectors with sequenced LED's. Could have potential, simiple digital RGB interface.
I own a DLP projector and I wanted to answer a question I haven't been able to find online. If you have a light and an eye at the right angle, can you look at a DMD and see an image directly, or do you need a lense assembly and it to be projected onto something because they are mirrors (theoritically a very tiny range for the human eye to see the light). DLP projectors are dirt cheap, especially used ones with dead bulbs on ebay. I've ordered one to see, an infocus LP130 which is XGA. Postal strike means it might be a while before I get it, and figure out how to start it without a lamp. Thought I've seen videos on ebay of a russian fellow using the ballast on an approximate wattage sodium lamp I think. If anyone has already answered this I haven't found it. The size of the supporting electronics seem to be an issue as well.
I also own a 13.3" laptop and had to replace the screen. It's tiny thin and super light. I'm looking for something more immersive on driving games. what I want is head tracking with a moving screen with a decent FOV (but don't have to be totally immersive). At about 6-7 inchs the 13.3 screen seems to fit the bill and I can focus on it without too much eyestrain without needing extra optics. I would like to mount it to a motorcycle helmet and have a IMU (accelerometer / gyro) to do head tracking (a friend does this for his masters in engineering). Any thoughts? Anyone know of an 13.3" pc screen or similar sized screens that wouldn't require something like a TI TFP401A DVI interface chip to get out the digital RGB?
I appoligize in advance if I asked something that's already been answered, I searched the forums and didn't find anything but it wasn't a comprehensive search by any means.
Cheers
I recently stumbled onto this board and have been back and forth the last week. I'm a kind of person with numerous projects and not enough time so who know's if I'll ever build anything.
I was on digikey the other day and it looks like you can order SVGA FLCOS imagers for <100 dollars canadian. qHD (960x540) is on the way. They are non-stock but do not have any miniumum, I've yet to contact digikey. They also have 852x480 and a few others. I need to sign up to get the datasheet on these and was patiently waiting yesterday on approval from Micron. They are quite small, so for HMD use but may need some decent optics which from the sounds of it is a problem. They work like DLP micro projectors with sequenced LED's. Could have potential, simiple digital RGB interface.
I own a DLP projector and I wanted to answer a question I haven't been able to find online. If you have a light and an eye at the right angle, can you look at a DMD and see an image directly, or do you need a lense assembly and it to be projected onto something because they are mirrors (theoritically a very tiny range for the human eye to see the light). DLP projectors are dirt cheap, especially used ones with dead bulbs on ebay. I've ordered one to see, an infocus LP130 which is XGA. Postal strike means it might be a while before I get it, and figure out how to start it without a lamp. Thought I've seen videos on ebay of a russian fellow using the ballast on an approximate wattage sodium lamp I think. If anyone has already answered this I haven't found it. The size of the supporting electronics seem to be an issue as well.
I also own a 13.3" laptop and had to replace the screen. It's tiny thin and super light. I'm looking for something more immersive on driving games. what I want is head tracking with a moving screen with a decent FOV (but don't have to be totally immersive). At about 6-7 inchs the 13.3 screen seems to fit the bill and I can focus on it without too much eyestrain without needing extra optics. I would like to mount it to a motorcycle helmet and have a IMU (accelerometer / gyro) to do head tracking (a friend does this for his masters in engineering). Any thoughts? Anyone know of an 13.3" pc screen or similar sized screens that wouldn't require something like a TI TFP401A DVI interface chip to get out the digital RGB?
I appoligize in advance if I asked something that's already been answered, I searched the forums and didn't find anything but it wasn't a comprehensive search by any means.
Cheers