Optical display device comprising a window having a controllable variable transmittance
The equipment has a translucent optical plate (11) i.e. visor of a helmet, completely or partially covering a visual field (3) of a user, and an image projection device (21) for projecting images on the translucent optical plate that comprises a set of zones (12, 13, 15) covered by a layer made of m...
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| Format: | Patent |
| Sprache: | eng ; fre ; ger |
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| Zusammenfassung: | The equipment has a translucent optical plate (11) i.e. visor of a helmet, completely or partially covering a visual field (3) of a user, and an image projection device (21) for projecting images on the translucent optical plate that comprises a set of zones (12, 13, 15) covered by a layer made of material e.g. electro chromic type liquid crystal material, having controlled light transmission coefficient. A control unit (22) receives state information (25) e.g. luminosity level, of the set of zones, and controls the light transmission coefficient of each zone based on the state information. |
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