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Machina Dynamica New Dark Matter CD and Blu Ray tray treatment?

This is a set of adhesive-backed thin plastic pieces that one attaches to one’s transport or player disc tray. The disk rests on them during non-spin mode, but presumably don’t touch the applied thin pieces during playback mode. The company says the new Dark Matter pieces reduces background scattered light from reaching the photodetector, thereby improving performance. 

Anyone tried this product? Please specify transport or player if you have and your impressions. 
celander
celander's avatar
celander OP
1,504 posts
 
04-04-2019 9:02pmGeoff wrote:

"When the laser beam is over a “land” the full reflected signal is registered by the photodetector for that short period of time."

Are you certain about that claim, professor? What if it is only 1/3 of the reflected signal? What happens to the remainder 2/3 of the reflected signal?
geoffkait's avatar
geoffkait
23,365 posts
 
There is a threshold for detection. Light signals less than 75% full reflected power will not be detected. This is very good news because it means we don’t have to completely eliminate the background scattered light, just reduce it sufficiently in intensity. Think if the inside of the transport compartment like a light bulb lit up by scattered light. You just want to turn the brightness down a bit.
thecarpathian's avatar
thecarpathian
5,144 posts
 
To repeat an earlier post of mine, does it rely on surface plasmon resonances for light absorption through the utilization of specific nanoparticles tuned to absorb specific wavelengths or frequency ranges?
Post removed 
thecarpathian's avatar
thecarpathian
5,144 posts
 
And since it’s the nanoparticles doing the work, the color of the nanoparticle impregnated material does not need to be black. Did I win?? Did I win??
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