US 12,474,576 B2
Local dimming of mixed reality glasses in medical environment
Laura Kern, Munich (DE); Daniel Wilmes, Munich (DE); and Julia Doerner, Munich (DE)
Assigned to BRAINLAB AG, Munich (DE)
Filed by Brainlab AG, Munich (DE)
Filed on Jun. 26, 2023, as Appl. No. 18/341,414.
Prior Publication US 2024/0427144 A1, Dec. 26, 2024
Int. Cl. G02B 27/01 (2006.01)
CPC G02B 27/0101 (2013.01) [G02B 27/017 (2013.01); G02B 2027/0118 (2013.01); G02B 2027/014 (2013.01); G02B 2027/0178 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of controlling local dimming of mixed reality glasses, comprising:
performing of local dimming of a dimmed area, which is a part of a display area of the mixed reality glasses which is occupied by a virtual object, and
reducing, based on determining that at least a part of the dimmed area, which is the part of the display area of the mixed reality glasses which is occupied by the virtual object, reduces visibility of a real-world object, a dimming intensity of the local dimming in at least the part of the dimmed area, wherein reducing the dimming intensity involves cutting out a part of the dimmed area which covers an object of interest, and wherein cutting out a part of the dimmed area includes:
placing an imaginary object around the object of interest wherein the imaginary object is larger than the object of interest,
calculating a projection of the imaginary object into the dimmed area, and
reducing the dimming intensity of segments of the dimmed area which overlap with the projection.