US 9,810,891 B2
Dual light source enhanced integration system
Daniel Robert Adema, Kitchener (CA); Joseph Ma, Waterloo (CA); and Graham Hill, Waterloo (CA)
Assigned to CHRISTIE DIGITAL SYSTEMS USA, INC., Cypress, CA (US)
Filed by CHRISTIE DIGITAL SYSTEMS USA, INC., Cypress, CA (US)
Filed on Apr. 15, 2015, as Appl. No. 14/687,133.
Prior Publication US 2016/0306150 A1, Oct. 20, 2016
Int. Cl. G02B 19/00 (2006.01); G02B 27/09 (2006.01); G03B 21/20 (2006.01); F21V 8/00 (2006.01)
CPC G02B 19/0028 (2013.01) [G02B 6/0096 (2013.01); G02B 19/0047 (2013.01); G02B 27/0994 (2013.01); G03B 21/208 (2013.01); G03B 21/2013 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A system comprising:
a first light source configured to emit a first given colour of light;
a second light source configured to emit a second given colour of light, the second given colour different from the first given colour, respective spectra for each of the first colour and the second colour overlapping with each other;
a light integrator comprising: at least one body configured to integrate light, the at least one body comprising a respective length and a light egress end; a first light entrance device comprising a first light entrance face, the first light entrance device located distal the light egress end; and a second light entrance device comprising a second light entrance face parallel the first light entrance face; each of the first light entrance device and the second light entrance device configured to receive light and deflect the light into the at least one body and towards the light egress end; and,
a beamsplitter system configured to equally distribute light from each of the first light source and the second light source to each of the first light entrance face and the second light entrance face,
the beamsplitter system comprising a beamsplitter, a first mirror at the first light entrance face, and a second mirror at the second light entrance face,
the beamsplitter configured to: transmit half of the first given colour of light from the first light source to the second mirror; reflect a remaining half of the first given colour of light from the first light source to the first mirror; transmit half of the second given colour of light from the second light source to the first mirror; and, reflect a remaining half of the second given colour of light from the second light source to the second mirror,
the first mirror configured to: reflect the remaining half of the first given colour of light from the first light source into the first light entrance face; and reflect the half of the second given colour of light from the second light source into the first light entrance face,
the second mirror configured to: reflect the half of the first given colour of light from the first light source into the second light entrance face; and reflect the remaining half of the second given colour of light from the second light source into the second light entrance face,
such that the light from each of the first light source and the second light source is equally combined at each of the first light entrance face and the second light entrance face, the light entering both of the first light entrance face and the second light entrance face has the same characteristics with regards to at least colour and intensity.