5 ms·

It also can't produce white or anything else in the interior of this diagram (as well as, as you mention, shades of magenta and purple that lie on the flat lowe

It also can't produce white or anything else in the interior of this diagram (as well as, as you mention, shades of magenta and purple that lie on the flat lower edge): https://upload.wikimedia.org/wikipedia/commons/b/ba/PlanckianLocus.png https://upload.wikimedia.org/wikipedia/commons/b/ba/Planckia...

mensetmanusman 2y ago
The human eye will see white when a pixel flashes through all of the colors quickly in time.
- ajuc 2y ago
  But that means it has reduced refresh rate.
  - wmertens 2y ago
    The two are not related at all. Refresh rate is how fast it can accept input, whereas this is how fast it can do TDM of colors and intensities
    - deleted 2y ago
      [deleted]
- Etherlord87 2y ago
  How quickly? Surely well above 1 kHz (1000 FPS). Otherwise you will see flickering.
  - jessriedel 2y ago
    According to this, humans can't see flicker above 100 Hz for most smooth images, but if the image has high frequency spatial edges then they can see flicker up to 500-1000 Hz. It has to do with saccades. https://www.nature.com/articles/srep07861 https://www.nature.com/articles/srep07861
  - mastax 2y ago
    Single chip DLP projectors strobe red, green, blue, white sequentially. Modern DLPs use separate light sources (LED/Laser) and pulse them at a high frequency - kilohertz I assume. Before we had high-power LEDs DLP projectors used a xenon lamp and a color wheel (https://www.projectorjunkies.com/color-wheel-dlp/ https://www.projectorjunkies.com/color-wheel-dlp/) spinning at as little as 60 revolutions per second. This caused a "rainbow effect" which was very annoying to some people, but apparently enough people didn't notice it that those products got sold anyway. So somewhere around 180Hz is the bare minimum.
- mark-r 2y ago
  You don't need all the colors. As every household white LED bulb proves, you can get it with just a combination of blue and yellow.
  - rini17 2y ago
    You'll get atrocious CRI/sick skin tones that way. There's much more fleshed out spectrum in nowadays LEDs, especially warm white variants.

mensetmanusman 2y ago

The human eye will see white when a pixel flashes through all of the colors quickly in time.

ajuc 2y ago
But that means it has reduced refresh rate.
- wmertens 2y ago
  The two are not related at all. Refresh rate is how fast it can accept input, whereas this is how fast it can do TDM of colors and intensities
  - deleted 2y ago
    [deleted]
Etherlord87 2y ago
How quickly? Surely well above 1 kHz (1000 FPS). Otherwise you will see flickering.
- jessriedel 2y ago
  According to this, humans can't see flicker above 100 Hz for most smooth images, but if the image has high frequency spatial edges then they can see flicker up to 500-1000 Hz. It has to do with saccades. https://www.nature.com/articles/srep07861 https://www.nature.com/articles/srep07861
- mastax 2y ago
  Single chip DLP projectors strobe red, green, blue, white sequentially. Modern DLPs use separate light sources (LED/Laser) and pulse them at a high frequency - kilohertz I assume. Before we had high-power LEDs DLP projectors used a xenon lamp and a color wheel (https://www.projectorjunkies.com/color-wheel-dlp/ https://www.projectorjunkies.com/color-wheel-dlp/) spinning at as little as 60 revolutions per second. This caused a "rainbow effect" which was very annoying to some people, but apparently enough people didn't notice it that those products got sold anyway. So somewhere around 180Hz is the bare minimum.
mark-r 2y ago
You don't need all the colors. As every household white LED bulb proves, you can get it with just a combination of blue and yellow.
- rini17 2y ago
  You'll get atrocious CRI/sick skin tones that way. There's much more fleshed out spectrum in nowadays LEDs, especially warm white variants.