US 12,345,899 B2
System and method for passive 3D display
Jasper Irené Lambert, Waregem (BE); and Katrien Nicole Marie Noyelle, Gullegem (BE)
Assigned to BARCO N.V., Kortrijk (BE)
Appl. No. 17/427,183
Filed by BARCO N.V., Kortrijk (BE)
PCT Filed Feb. 5, 2019, PCT No. PCT/EP2019/052801
§ 371(c)(1), (2) Date Jul. 30, 2021,
PCT Pub. No. WO2020/160759, PCT Pub. Date Aug. 13, 2020.
Prior Publication US 2022/0128835 A1, Apr. 28, 2022
Int. Cl. G02B 30/25 (2020.01)
CPC G02B 30/25 (2020.01) 16 Claims
OG exemplary drawing
 
1. A system for displaying images prepared for 3D viewing, comprising:
a display having display pixels, each pixel comprising sub-pixels of at least the colors red, green and blue, where one or two colors are represented by two or more sub-pixels,
a polarization filter comprising areas of a first polarization type and areas of a second polarization type, wherein the areas of the polarization filter are arranged in a pattern, and wherein each area is selected from one of the first polarization type and the second polarization type,
wherein the pattern is configured so that,
when the polarization filter is positioned on top of the pixels,
each area aligns with a sub-pixel,
wherein more than half of a first set of the red, green, and blue sub-pixels are under areas of the first polarization type, and the other at least one of the first set of the red, green, and blue sub-pixels is under an area of the second polarization type,
all the green sub-pixels under areas of the first polarization type are uniformly distributed in the display so that a polarization filtered horizontal green subpixel pitch is the same as a polarization filtered vertical green subpixel pitch,
wherein more than half of a second set of the red, green and blue sub-pixels are under areas of the second polarization type, and the other at least one of the first set of the red, green, and blue sub-pixels is under an area of the first polarization type, and
all green sub-pixels under areas of the second polarization type are uniformly distributed in the display so that a polarization filtered horizontal green subpixel pitch is the same as a polarization filtered vertical green subpixel pitch.