G - Physics – 02 – B
Patent
G - Physics
02
B
88/98
G02B 6/28 (2006.01) G02B 6/34 (2006.01)
Patent
CA 1250170
TITLE AN OPTICAL MIXING/DEMIXING DEVICE INVENTORS J. A. Dobrowolski E. H. Hara ABSTRACT An optical mixing/demixing device is provided comprising a series of solid, light transmitting blocks, each having opposed, front and rear parallel, planar faces, coated with optical interference multilayer coatings, and first and second light transmitting faces arranged one on each side of the front planar face. The blocks are packed side by side with a precision, light expanding and collimating lens on the first light transmitting face and further, similar precision lenses on each of the second light transmitting faces. The blocks are packed so that when the device is used in the demixing mode a light beam passing through the first lens is expanded and collimated and directed through the first light transmitting face, to traverse the foremost body at which point only a particular spectral region of the beam will be reflected internally within the first body by the optical interference multilayer coating on the rear planar surface to then reflectably rebound in zigzag fashion between the optical interference multilayer coatings on that block to finally exit from that block through the second light transmitting face and be converged by the second lens, while the remainder of the spectral region of the beam will pass through the optical interference coating on the rear surface of the foremost body to enter the first light transmitting face of the next body where a different spectral region of the beam is reflectively rebounded between the optical interference multilayer coatings in a similar manner, and so on with different spectral regions being reflectively rebounded through each succeeding body, and, when the device is used in the mixing mode light beams of different spectral regions are fed by the second lenses into the second light transmitting faces to exit mixed from the first light transmitting face through the first lens. The first and second light transmitting faces may also be coated with optical interference multilayer coatings that are pass band filters.
486902
Dobrowolski Jerzy A.
Hara Elmer H.
As Represented By The Ministe R. Of Communications Her Majesty The Queen In Right Of Canada
Toyooka Yoshiharu
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