US 12,270,997 B2
Systems and methods to minimize double-bounce in waveguides
Daniel Adema, Kitchener (CA)
Assigned to GOOGLE LLC, Mountain View, CA (US)
Filed by GOOGLE LLC, Mountain View, CA (US)
Filed on Sep. 1, 2021, as Appl. No. 17/464,240.
Prior Publication US 2023/0066767 A1, Mar. 2, 2023
Int. Cl. G02B 27/01 (2006.01); F21V 8/00 (2006.01)
CPC G02B 27/0172 (2013.01) [G02B 6/0023 (2013.01); G02B 2027/0178 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A laser projection system comprising:
an optical engine comprising a plurality of laser diodes configured to emit a plurality of light beams; and
a beam combiner having a plurality of reflective surfaces each configured to receive a light beam of the plurality of light beams from one of the plurality of laser diodes and to reflect the received light beam such that an edge of the reflected light beam lies on a tangent common to the plurality of light beams reflected from other of the plurality of reflective surfaces, wherein at least one light beam of the plurality of light beams has a different perimeter relative to at least one other light beam of the plurality of light beams upon exiting the beam combiner.