| 摘要 |
<p>An optical device includes a substrate (60) and three prisms (10), (20) and (30). The first prism (10) is disposed adjacent to an upper surface of the substrate (60). An incoming beam aperture (65) is positioned adjacent a first surface (12) of the first prism (10), the first surface (12) extending away from the upper surface of the substrate (60). The second prism (30) is disposed adjacent to the upper surface of the substrate (60) and is spaced from the first prism (10) by a first distance. The third prism (20) is also disposed adjacent to the upper surface of the substrate (60). The third prism (20) may be spaced from the second prism (30) by the same first distance. An outgoing beam aperture (66) is positioned adjacent a first surface (22) of the third prism (20). The substrate (60) has phase changing reflective surfaces (40) and (50) along the upper surface between the first prism (10) and the second prism (30) and between the second prism (30) and the third prism (20).</p> |
