Abstract: An optical device is disclosed including: a non-imaging secondary concentrator having an entry aperture and an exit aperture, and configured to receive light focused by a primary focusing element from a source onto the entry aperture. The non-imaging secondary concentrator includes: a first portion proximal the entry aperture which is rotationally symmetric about an optic axis; and a second portion proximal the exit aperture which is not rotationally symmetric about the optic axis.

Abstract: An optical concentrator is disclosed which includes an imaging, aplanatic optical element having a front surface with a one-way light admitting portion, a back surface with a reflective portion, and an interior region of refractive material disposed between the front and backs surfaces.

Abstract: An optical device is disclosed including: a non-imaging secondary concentrator having an entry aperture and an exit aperture, and configured to receive light focused by a primary focusing element from a source onto the entry aperture. The non-imaging secondary concentrator includes: a first portion proximal the entry aperture; and a second portion proximal the exit aperture which is not rotationally symmetric about an optic axis. The optical device further comprises a means for homogenizing the light focused onto the entry aperture of the secondary concentrator.

Abstract: One embodiment of the invention relates to a light concentrator apparatus including a reflector with an open substantially hemispherical reflecting surface characterized by a radius R, and an aperture for admitting light onto the hemispherical reflecting surface. The light concentrator apparatus further includes a movable elongated light collector having a first end located proximal to the reflecting surface; and extending along a longitudinal axis in a direction substantially normal to the reflecting surface to a second end. The light concentrator further includes a tracker configured to move the first end of the collector to points proximal to the reflecting surface.

Abstract: An optical collector is disclosed which includes an imaging, aplanatic optical element having a front surface with a one-way light admitting portion, a back surface with a reflective portion, and an interior region of refractive material disposed between the front and backs surfaces.

Abstract: An apparatus is disclosed including: an entrance aperture for admitting light from a source; an optical collector configured to receive light admitted through the entrance aperture and concentrate the light onto a receiver element; and an optical homogenizer element configured and arranged to image the entrance aperture onto the receiver element.

Abstract: An optical concentrator is disclosed which includes an imaging, aplanatic optical element having a front surface with a one-way light admitting portion, a back surface with a reflective portion, and an interior region of refractive material disposed between the front and backs surfaces.

Abstract: An optical collector is disclosed which includes an imaging, aplanatic optical element having a front surface with a one-way light admitting portion, a back surface with a reflective portion, and an interior region of refractive material disposed between the front and backs surfaces.

Abstract: An optical device is disclosed including: a non-imaging secondary concentrator having an entry aperture and an exit aperture, and configured to receive light focused by a primary focusing element from a source onto the entry aperture. The non-imaging secondary concentrator includes: a first portion proximal the entry aperture which is rotationally symmetric about an optic axis; and a second portion proximal the exit aperture which is not rotationally symmetric about the optic axis.