Optical devices

An optical manifold for distributing light, comprising:

• a transparent body defining an outer surface, at least one entry port, and at least one exit port, said transparent body comprising a material suitable for propagating light, said material having an index of refraction suitable for providing total internal reflection at the surface of said body;
• said outer surface comprising optically active surfaces angled for total internal reflection of light issuing into and out of said entry and exit ports;
• said entry and exit ports operable for light-transmittance at substantially all incidence angles up to the critical angle of said material;
• said entry and exit ports having generally rectangular shapes of substantially the same area but different proportions;
• said optically active surfaces operable as connecting surfaces for conveying light between said entry and exit ports by total internal reflection at all incidence angles past the critical angle of said transparent material;
• and
• said connecting surfaces comprising two opposite planar surfaces and two opposite surfaces with linearly swept nonimaging profiles that spatially mix said light.

An optical beam rotator, comprising:

• a transparent body defining an outer surface with opposite first and second sides, and non-parallel entry and exit ports extending between the first and second sides;
• the first side comprising a first optically active surface extending from said first port to a first point and a second point, wherein the first point is between the first port and the second point;
• the second side comprising a second optically active surface;
• the first and second points positioned so that light entering through the first port and passing without reflection the first point does not pass between the first and second points;
• the second optically active surface shaped so that light entering the first port and reflecting off the second optically active surface does not pass between the first and second points;
• and
• the first and second optically active surfaces comprising elliptical and parabolic arcs with foci at the first and second points such that light entering the first port and reflecting off the first optically active surface and then off the second optically active surface does not pass between the first and second points;
• and
• an optically inactive part of the body, the inactive part positioned between the first and second points projecting away from the second optically active surface.