lorenzo82 ha detto:
Gli edge led local dimming controllano in maniera indipendente meno di una ventina di zone.
Prima di ipotizzare attenderei qualche test e qualche specifica tecnica
di maggior dettaglio, segnalo cmq che il C9000
dovrebbe
adottare una variante diversa di EDGE LED local dimming già in fase
di sviluppo e parecchio promettente !!!!!!!!!
Per chi vuole approfondire e mastica un pochino la materia
lascio un esposto tecnico di un certo livello, sono descritti alcuni
sviluppi e alcune dinamiche poco conosciute di varianti EDGE LED......
Samsung Advanced Institute of Technology !!!!
http://www.opticsinfobase.org/viewmedia.cfm?uri=oe-15-6-2888&seq=0
Optics InfoBase - Grating micro-dot patterned light guide plates for LED backlights
Questo invece è lo sviluppo portato avanti da 2 ingegneri cinesi !!!
http://www.breault.com/resources/kbasePDF/wp_spie_037_edge_backlight.pdf
alcuni passaggi salienti:
The geometry construction is simplified through
the use of an
optical model in which
the diffuser dots are separated from the base of the light guide !!!!!
This paper has proposed a method for optimizing the dot
pattern distribution of
edge-lit backlights using a
regional
partition approach. The approach commences by dividing
the light guide into a number of partitions and assigning an
equal radius to every dot.
However, integrating the dot pattern and optical
design phases is very difficult when the former phase is
based on a random dot distribution algorithm.
By contrast:
regular dot arrangement algorithms are more easily integrated
with the optical design phase, and make it relatively
straightforward to implement a two-step dot pattern optimization
process.
This study commences by partitioning the light
guide into an array of grids of equal size. In the proposed
optimization procedure, each dot within one partition has
the same radius. In other words, the number of variables to
be optimized
is equal to the total number of partitions
in the light guide rather than the total number of dots. As a result,
the scale of the optimization task becomes far more manageable.