OPTICAL DEVICE FOR REDIRECTING INCIDENT ELECTROMAGNETIC WAVE

摘要

An optical device for redirecting an incident electromagnetic wave includes an interference region having a first side and a second side opposite to the first side; a grating structure arranged on a third side of the interference region; a mirror arranged at the first side. An incident electromagnetic wave is impinged into the interference region through the second side or through the grating structure or through a side opposite to the grating structure, and then a substantial portion of the incident electromagnetic wave leaves the interference region at a predetermined angle with respect to the incident direction.

主权项

1. An optical device for redirecting an incident electromagnetic wave, comprising
an interference region having a first side and a second side; a mirror arranged at the first side; and a grating structure arranged on the second side of the interference region, wherein the incident electromagnetic wave is impinged into the interference region at an incident direction through a side opposite to the first side, or through the second side, or through a side opposite to the second side, and then a substantial portion of the incident electromagnetic wave leaves the interference region along a direction at a predetermined angle with respect to the incident direction.