I can't tell if it's a feature of the screen or just the very dark nature of subway tunnels, but I really like the fact that the screen goes completely opaque on the bright blue screens.
Transparent screens could be useful in all sorts of scenarios, but I think tech demos too often ignore the fact that, most of the time, you want the image to be as clear as possible, which means opaque.
It isn't transparent. It shows a digital rendering of you on the OLED screen facing outwards. And to me, it reeks of "Glasshole" yet again. It would be like someone having sunglasses inside, "can you please remove them when we're talking?".
probably more readable though. With the displays at the time you could see through even the blacks it was like 50% transparent when displaying a totally black screen. Means you could see through it but the images you put on the display needed to be fairly simple and .. id dunno 'blocky' because depending on what was behind the glass it could get very visually confused.
In the researchers’ prototype, however, display pixels do have to be masked from the parts of the pupil for which they’re not intended. That requires that a transparency patterned with an array of pinholes be laid over the screen, blocking more than half the light it emits.
My first thought was "well of course they don't," but their concept renders do indeed have opaque black.
I'm guessing these are just technically uninformed renders with no basis in actually-proposed applications, but it seems at least plausible that one could combine transparent OLED with a transparent LCD backing (sort of the inversion of a backlight) to create a variable-transparency screen.
I wonder who came up with the idea that removing black and replacing it with transparency would be a good idea, and would be a reasonable replacement for a normal screen. Forget about all that nice contrast and read a white font in front of a sunny beach...
If you are in a room with no light sources, shuttered windows, what colour do you see? I would call that black.
Sure, it's rare to be in such a setting nowadays (at least your cellphone indicating it's charging will be there, or there'd be stars or moon outside), but I think caves are perfectly natural, and you get pure absence of light there. Or 10km below the sea level.
As others have pointed out, you rarely even get pure black, especially with text: on top of reasons others have mentioned, displays use subpixel rendering to make an illusion of higher dpi (similar techniques are employed in the print industry).
Drawing an opaque, dark line. Almost all these screens are adding light to an existing scene. The only way they can make black is to just not project light, which means you need to have a dark background to actually show dark.
Ever view a projector outside in a bright sunny day?
There are pictures in the tweet of completely black screens, presumably malfunctioning or otherwise “off” screens so pretty clearly (heh) not transparent.
I'll go a step further: most screens even black has some brightness and blueness. You can see the difference if you wear blue-blocking glasses. A pair of those is worthwhile. They're more widespread and inexpensive these days.
But yeah, like the other reply, I use Redshift slightly less blue in daytime and much less blue at night.
One thing to note is that light perception in human vision is not purely additive - especially when focal planes are taken into consideration. With proper light-field technology (i.e. actual projections within a focal plane) the effect of non-opacity could be greatly reduced. In any case, your example images showing additive light do not mimic reality very well. For example, in the far right images, the view of mars that would be perceived by a human eye would look nearly perfectly opaque (except where the 'dark bands' are less bright than the background). You certainly would not perceive the black screen bezel at all.
I didn't interpret that for dishonesty; he's just trying to illustrate how it works, in my opinion, by showing a scenario where the screen is too dark for the content on it, and another scenario where the screen is too bright for the content on it.
That doesn’t make sense at all for most types of screens. If anything, I wonder if a darker design might make visitors increase their screen brightness to compensate.
Transparent screens could be useful in all sorts of scenarios, but I think tech demos too often ignore the fact that, most of the time, you want the image to be as clear as possible, which means opaque.
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