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$value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in C:\inetpub\wwwroot\km-sensing\wp-content\plugins\admin-menu-editor-pro\extras\modules\tweaks\configurables.php on line 192 Deprecated: Return type of YahnisElsts\AdminMenuEditor\Configurable\ActorFeature::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in C:\inetpub\wwwroot\km-sensing\wp-content\plugins\admin-menu-editor-pro\extras\modules\tweaks\configurables.php on line 196 Importancia de la medición del contraste de la pantalla en la instrumentación de la cabina - Konica Minolta Sensing
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Importancia de la medición del contraste de la pantalla en la instrumentación de la cabina


La instrumentación de cabina en la industria aeroespacial ha evolucionado durante las últimas décadas. En el pasado, los paneles de control tenían indicadores, interruptores y perillas retroiluminados, mientras que ahora es más probable que vea una variedad de pantallas planas. Estos paneles deben emitir una luz y un color consistentes para reducir la fatiga visual, facilitar la interpretación de los datos y disminuir las distracciones. Además, son cómodos de ver tanto de día como de noche. Dos medidas clave son la luminancia (una medida de brillo) y el contraste de la pantalla (la relación entre la luz y la oscuridad).

La luminancia (Luminosidad) es una medida fotométrica de la intensidad luminosa por unidad de área de luz que viaja en una dirección determinada. La luminosidad se define como la luminancia del componente más brillante (color blanco) y se mide en candelas por metro cuadrado (cd / m2 = nit) o pie-lambert (1fL = 3.426 nits). Por lo general, la luminancia de la pantalla varía desde 100 nits, que se encuentra en la mayoría de los monitores de oficina, hasta 1000 nits en los sistemas de proyección frontal.

Hay una variedad de unidades que se utilizan para la luminancia. En la mayoría de los países, la unidad más común de luminancia es la candela / metro cuadrado (cd / m2). Sin embargo, en los EE. UU., La unidad más común es el foot-lambert (fL); 1 foot-lambert (fL) equivale a 1 / π candela / pie cuadrado, o 3.426 cd / m2. Los profesionales de la industria suelen utilizar el término nit (nt). 1 unidad de nit equivale a 1 cd / m2.

Para medir la luminancia, puede utilizar un medidor de luminancia como el LS-150 o LS-160.

El contraste de pantalla es la relación entre los colores más brillantes (en la mayoría de los casos, el blanco) y el color más oscuro (en la mayoría de los casos, el negro) que el monitor es capaz de producir. Donde no existe un estándar de la industria para medir el contraste, el proceso generalmente aceptado es medir partes de una pantalla y tomar el blanco promedio o más alto y el negro promedio o más bajo y expresarlo en forma de proporción luminoso:oscuro. Por ejemplo, si una pantalla tiene una luminancia brillante de 150 nits y una luminancia oscura de 1 nit, la relación de contraste se mostraría como 150:1.

Con rendimiento más alto recientemente, los OLED con negros más oscuros ahora están produciendo rangos mucho más amplios. Por lo tanto, si un monitor puede generar 7500 nits con una pantalla blanca y 0,010 nits con una pantalla negra, tendría una relación de contraste de 750,000:1. Un mayor contraste produce imágenes más profundas con mejor calidad de pantalla, lo que proporciona colores más ricos que facilitan la interpretación de imágenes y datos. Una pantalla LCD decente puede tener una relación de contraste de 1000:1. El contraste en una pantalla OLED es mucho mayor, alrededor de 4000:1, con unidades de ultra-alto-nivel que comienzan a acercarse a 1,000,000:1. Cuando una pantalla OLED muestra negro, sus píxeles casi no producen luz alguna.

La relación de contraste de una pantalla es una de las medidas de rendimiento más importantes. Además, será la diferencia más notable entre dos pantallas cuando se camparan lado a lado.

Para medir el contraste, es mejor utilizar un espectrorradiómetro como el CS-2000 y CS-2000A. Con espectrorradiómetros de gama alta, se puede medir los negros más oscuros hasta una luminancia muy baja de 0,003 cd / m2, lo que permite mediciones de hasta 1.000.000: 1.

 

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