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Mitsubishi Electric Develops Car Display System with Free-form Screen
Projects images on curve-, oval- or triangle-shaped screens to match interior layouts
(Left: convex screen; Right: dual convex-concave screen)
1) In-vehicle display flexibly matches car interiors
Mitsubishi Electric's original curve-variable optical system projects images on screens of various shapes to minimize blur in screen areas with deep curves. The prototype system's single optical engine adapts to a wide range of surfaces, unlike conventional displays that require a designated optical engine designed for a screen's specific curves or shape.
Natural, distortion-free images are projected on curved, oval or triangular surfaces through a screen distortion adjustment process that predicts the distortion of images caused by complex curves, and adjusts visual signal input. (See image below)
Configuration of car display system with free-form screen
2) Excellent resistance to high temperature, vibration and shock
To ensure steady performance and extended product life, Mitsubishi Electric developed a hybrid cooler that combines systems for highly efficient radiation and natural and forced-air cooling. In addition, the overall structure minimizes distortion of the optical engine and chassis due to vibration or shock while driving, ensuring that images remain crisp and clear. The display also incorporates a plastic screen that absorbs light to maintain excellent visibility in bright environments.
3) Rich colors in high-temperature conditions
The display system incorporates red, green and blue LEDs for its light source to achieve a color gamut 1.5-times wider than conventional displays that use white LED backlights. The three different LEDs produce brighter colors and increased visibility. In addition, a light sensor separately controls light emissions from the different LEDs, each having its own temperature characteristics, and maintains color balance to stabilize color reproduction in a wide range of temperatures.
Color gamut on u'v'
(1976 UCS chromaticity diagram, International Commission on Illumination)
The technologies announced in this news release encompass 11 Japanese and three international patents pending.
Mitsubishi Electric Corporation