Dandanes povsod cvetijo LCD reklamni stroji. Mala in srednja{0}}podjetja prav tako hitijo po kos pogače. Trg ima vedno višje zahteve za LCD zaslone. Nato vam bodo tehniki Rongda Caijing pokazali pravo barvo slike LCD oglaševalskih strojev. zdaj.
Gradbeni oglasni stroj
With the development of science and technology, the performance of today's semiconductor light-emitting diodes has reached a new level, and its photoelectric conversion efficiency has reached more than 10cd/w. Especially the emergence of blue ultra-bright LED devices makes the spectrum of LED devices cover the range of natural light. .
The visual principle of the full-color LCD advertising machine display is the same as that of a color TV. It realizes the restoration and reproduction of the image color through the different light intensities of the three colors of red, green and blue. The purity of red, green and blue directly affects the visual effect of image color reproduction. However, the three-color ratio of white light is not a simple superposition of three colors.
Prvič, ob predpostavki zagotavljanja čistosti optične frekvence mora biti razmerje intenzivnosti rdeče, zelene in modre svetlobe blizu 3:6:1;
Second, due to the sensitivity of people's vision to red, the red light source is required to be dispersed in space;
Third, due to the different nonlinear curve responses of people's vision to the light intensities of the three colors of red, green and blue, it is required that white light with different light intensities should be corrected for red, green and blue similar to the gamma correction in TV sets;
Četrtič, človeški vid ima omejeno sposobnost razlikovanja kromatske aberacije. Zato je treba najti objektivne kazalnike pristnosti barvne reprodukcije slike.
Za reprodukcijo prave barve slike mora porazdelitev svetlobe na zaslonu LCD oglasnega stroja izpolnjevati naslednje zahteve:
① The wavelengths of red, green and blue should be about 660nm, 525nm and 470nm respectively;
② It is better to use 4-tube unit with white light (multi-tube unit is also possible, depending on the light intensity);
③ The gray level of red, green and blue is 256 levels;
④ Non-linear correction for LED pixel tube must be adopted.
Porazdelitev rdeče, zelene in modre svetlobe ter nelinearna korekcija se lahko izvede s strojno opremo sistema za nadzor zaslona ali s programsko opremo sistema za predvajanje.
