US 11,693,252 B2
Attenuation of light transmission artifacts in wearable displays
David Manly, Miami, FL (US); Kevin Messer, Fort Lauderdale, FL (US); Vaibhav Mathur, Weston, FL (US); and Clinton Carlisle, Parkland, FL (US)
Assigned to Magic Leap, Inc., Plantation, FL (US)
Filed by Magic Leap, Inc., Plantation, FL (US)
Filed on Oct. 16, 2020, as Appl. No. 17/72,510.
Claims priority of provisional application 62/916,350, filed on Oct. 17, 2019.
Prior Publication US 2021/0116712 A1, Apr. 22, 2021
Int. Cl. G02B 27/28 (2006.01); G02B 27/01 (2006.01); G02F 1/137 (2006.01); G02F 1/1335 (2006.01); G02B 5/30 (2006.01)
CPC G02B 27/281 (2013.01) [G02B 5/3025 (2013.01); G02B 27/0172 (2013.01); G02F 1/137 (2013.01); G02F 1/133528 (2013.01); G02B 2027/014 (2013.01); G02B 2027/0178 (2013.01)] 19 Claims
OG exemplary drawing
 
2. A wearable display system, comprising:
an eyepiece stack having a world side and a user side opposite the world side, wherein during use a user positioned on the user side views displayed images delivered by the wearable display system via the eyepiece stack which augment the user's field of view of the user's environment; and
an angularly selective film arranged on the world side of the eyepiece stack, the angularly selective film comprising a passive polarization adjusting film arranged between a pair of linear polarizers,
wherein the linear polarizers and polarization adjusting film significantly reduces transmission of visible light incident on the angularly selective film at large angles of incidence without significantly reducing transmission of light incident on the angularly selective film at small angles of incidence, wherein for a D65 source, the angularly selective film shifts a (0.33, 0.33) CIE 1931 white point less than (+/−0.02, +/−0.02) for unpolarized light with an angle of incidence between −32° and +32°.