Earlier quoted context omitted.
Black LEDs :)
LADs, rather.
see also: "How we lost the moon"
Transparent OLEDs
51–60 of 168 posts
Re: Transparent OLEDs
#52how do they do the black?
A basic transparent OLED screen doesn't, but is often slightly tinted, and (indoors) its pixels are bright enough that the transparent pixels are dark enough to appear black by comparison. The same way you can run a projector on a white wall during the day, and its "black" is just the normal wall color. But while I've never seen it, I don't see why you couldn't put a transparent OLED over an LCD screen like the one i…
What does putting it over an LCD achieve?
Re: Transparent OLEDs
#53I can’t wait for this to be used in vehicles
Re: Transparent OLEDs
#54Would this be useful for augmented-reality headsets?
Assuming the transparency (article says 70-80%) can be improved for clarity and the pixels small enough then it could be great.
However you'd have to keep in mind that others looking at your face could see the same image. So don't go running that "X-RAY:make them appear naked!" app...
Re: Transparent OLEDs
#55Well, this would be another method for achieving heads up displays. Here's an application that I think would be really cool: HUD retrofits for cars. Take a transparent plastic film, stick it to the inside of your windshield in a similar manner like you would apply a tint film to the side and rear windows. Then, take the connector dangling from the corner of the film and connect it to the supplied box which connects t…
While I fully expect automakers to play that game however they can, there's not a huge benefit to moving the display up into your field of view from just below it (like a Prius), and there are a number of downsides.
And a real HUD, beyond deciding what information to present and how to present it (as you rightly pointed out), is also technically far more complex than slapping a display on glass:
"I commented on the original post, but this is a great example of reason #1 why HUDs are still green after 50+ years. Colors are additive with the outside world. There are conditions (sunset/sunrise) where you could get misleading information. Ambers and reds mean specific things. (https://images.app.goo.gl/G5Udbponiu1M1Fnc6)
"The optics in projecting an image reliably at optical infinity (makes it look like a billboard 500 yards in front of you rather than a TV screen 6 feet from you) are actually quite complicated and tuned to the specific wavelength. Having multiple colors drastically increases the complexity, or reduces the clarity because you have to compromise on the optimal wavelength.
"Generally the goal is to be as consistent with the head-down display as possible to limit the head cycles spent context switching, but in the case of colors we have other means of calling attention to important info: boxing and flashing both do a pretty effective job."
https://www.reddit.com/r/hudporn/comments/i8fp9m/the_hudset_...
Anything less than that just risks becoming obscured, with less contrast and similar focal-distance issues than a good instrument cluster.
That said, I wouldn't mind something I could stick on the glass of a vintage vehicle up in the corner so I can add instrumentation without modifying the dash.
But you're still going to get a much better approach with a windshield-mounted glass combiner, Picture Generating Unit and a projector.
Re: Transparent OLEDs
#56Earlier quoted context omitted.
> put the webcam behind the display The first time I saw an optical finger print sensor under a glass display, that was my immediate hope that it would kick off an under-glass optics explosion. > everyone gets to make direct eye contact again! As someone who doesn't always have "good" days with eye-contact, being forced to do that feels a bit terrifying.
As someone who doesn't always have "good" days with eye-contact Same here. In addition, I find when I'm forced to make eye contact for a prolonged time (> 2 min), my eyes get exhausted.
Could you have got the wrong idea about eye contact?
People don't generally make sustained eye contact for multi minute periods. Even 10 seconds is generally viewed as a long time: https://royalsocietypublishing.org/doi/10.1098/rsos.160086
Re: Transparent OLEDs
#57This sounds like it'll be good for sharper versions of the "magic mirror", a staple for maker projects.
Re: Transparent OLEDs
#58Would this be useful for augmented-reality headsets?
Assuming the transparency (article says 70-80%) can be improved for clarity and the pixels small enough then it could be great. However you'd have to keep in mind that others looking at your face could see the same image. So don't go running that "X-RAY:make them appear naked!" app...
Sunglasses block much more than 30% though. And can have a mirrored surface so others can't see your eyes, or your creepy app notifications :)
Re: Transparent OLEDs
#59Earlier quoted context omitted.
I think that’s a poor approach. While you end up with gaze more in the center of the display, you don’t always have a face directly centered. This alleviates some of the problem, but doesn’t remove it. A better approach that I’ve always wanted is to have four cameras on the corners of the display that generate a real time photogrametric projection of your face. This would mean not only would your camera view be dead…
Or you can just look at the camera instead of the screen
This is surprisingly difficult with a device like an iPad or smartphone in landscape where the camera is off to one side. Even knowing where the camera is, the image of the person on your screen that you're talking to tends to pull your gaze back. You can do it; it's just an effort.
Re: Transparent OLEDs
#60Earlier quoted context omitted.
> put the webcam behind the display The first time I saw an optical finger print sensor under a glass display, that was my immediate hope that it would kick off an under-glass optics explosion. > everyone gets to make direct eye contact again! As someone who doesn't always have "good" days with eye-contact, being forced to do that feels a bit terrifying.
Nobody's forcing you to make eye contact. :) You can still be totally free to not look directly at the person while talking to them. I mean, in normal conversation it's not like you're making constant eye contact anyways. If you did, you'd come across as a total psychopath. It's just so that when you want to make eye contact, you have that choice!
now i figured why i creep people out