| 摘要 |
<p>The filter (1) has a collimating and converging element (10) e.g. lens, aligned between an optical source (2) and an optical receiver (3). A dispersive element (20) e.g. diffraction network, separates the wavelengths, and a reflector element (30) e.g. mirror, reflects wavelength of light beam based on orientation of reflector around a rotation axis (AA). The elements are arranged, so that the beam forms a passage via the dispersive element before reaching the receiver. The reflector element has faces (31, 32) defining planes (P, Q) intersecting along a straight line (D) parallel to the axis.</p> |
