| 摘要 |
The disclosure generally relates to illumination converters that are capable of converting light from one geometrical format to another. In particular, the described illumination converters are capable of converting a circular source such as an LED to a linear source useful in an edgelit waveguide, which can be used in a backlight for a display. The converter consists of a waveguide plate (210) with two edges (220, 218) oriented towards each other at 45° such that a the waveguide plate consists of a rectangular part (204) attached to a triangular part (202). The triangular part is rolled into a coil around a central axis (250) and one side of the coil is used for coupling in of the light from a source. |
