Patent ID: 7099539
Filing Date: 2006-08-29
Classification: G02B

Abstract:
1. An optical system, comprising: a first branch aligned in a first direction and having a first end, a second end, and a first side edge extending between the first and second ends such that the first side edge is parallel to the first direction, the first branch being capable of allowing light to pass therethrough in a forward direction from the first end to the second end and a reverse direction from the second end to the first end, the first branch including a first medium with a first refractive index (n a second branch aligned in a second direction and having a first end, a second end, and a second side edge extending between the first and second ends such that the second side edge is parallel to the second direction, the second branch being capable of allowing light to pass therethrough in a forward direction from the first end to the second end, the second branch including a second medium with a second refractive index (n wherein n