| 摘要 |
<p>An optical device (10) comprising two layers (12, 18), with each layer having a plurality of adjacent and substantially coplanar polarizing layer portions (14, 16), with any two adjacent ones of these polarizing layer portions having orthogonal polarization directions. These two layers are movable relative to one another such that each of the polarizing layer portions from one layer can substantially overlap at least two of the polarizing layer portions from the other layer, with one of these other polarizing layer portions having a substantially identical polarization direction (fig.2a) and the other having an orthogonal polarization direction (fig.26). In this way, radiation wavelengths passing through the two layers can be selectively blocked and transmitted therethrough by moving the two layers relative to one another.</p> |
