US 12,189,136 B2
Attenuation of light transmission artifacts in wearable displays
David Manly, Fort Lauderdale, FL (US); Kevin Messer, Mountain View, CA (US); Vaibhav Mathur, Playa Vista, CA (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 May 12, 2023, as Appl. No. 18/316,824.
Application 18/316,824 is a continuation of application No. 17/072,510, filed on Oct. 16, 2020, granted, now 11,693,252.
Claims priority of provisional application 62/916,350, filed on Oct. 17, 2019.
Prior Publication US 2023/0314825 A1, Oct. 5, 2023
Int. Cl. G02B 27/28 (2006.01); G02B 5/30 (2006.01); G02B 27/01 (2006.01); G02F 1/1335 (2006.01); G02F 1/137 (2006.01)
CPC G02B 27/281 (2013.01) [G02B 5/3025 (2013.01); G02B 27/0172 (2013.01); G02F 1/133528 (2013.01); G02F 1/137 (2013.01); G02B 2027/014 (2013.01); G02B 2027/0178 (2013.01)] 19 Claims
OG exemplary drawing
 
1. 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 of the eyepiece stack, the angularly selective film comprising a polarization adjusting film arranged between a pair of linear polarizers,
wherein, for unpolarized light in a wavelength range from 420 nm to 680 nm, the angularly selective film has a transmission efficiency of 40% or more at angles of incidence less than 350 and has a transmission efficiency of 1% or less for at least one angle of incidence greater than 35°, wherein for a D65 source, the angularly selective film shifts a (0.33, 0.33) CIE 1931 white point less than (+/−0.2, +/−0.2) for unpolarized light with an angle of incidence between −32° and +32°.