US 12,332,458 B2
Vehicle system having variable opacity
Benjamin Chu, Royal Oak, MI (US); and Victor Wong, Lake Orion, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Sep. 8, 2022, as Appl. No. 17/940,534.
Prior Publication US 2024/0085716 A1, Mar. 14, 2024
Int. Cl. G02B 27/28 (2006.01); B60J 3/06 (2006.01)
CPC G02B 27/281 (2013.01) [B60J 3/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for providing variable opacity, comprising:
a light sensor configured to detect a level of illumination;
a polarization assembly disposed at a vehicle, the polarization assembly including:
a first panel having a plurality of first polarizing elements; and
a second panel having a plurality of second polarizing elements, the first panel and the second panel overlapping in a path of light incident on the vehicle; and
an actuation device configured to linearly translate the first panel relative to the second panel between a first position in which the polarization assembly is transparent to the light and a second position in which the polarization assembly at least partially blocks the light; and
a processing device configured to control the actuation device to move at least one of the first panel and the second panel based on the detected level of illumination.