Tag: black levels

29
Jul

The Importance of Optical Blending

Video projectors have limited sequential contrast. This means that, in dark scenes, background leakage light is always visible.

When multiple projectors are overlapped and electronically blended to form a larger image, there will be unwanted double-intensity background leakage. This becomes most apparent when dark-scenes are projected.

The image is an exaggerated example, showing how ‘leakage’ black levels cause unwanted bright-ups in the overlap zones, and the importance of optical blending.

GBvi Optical Blend Illustration