|
Beam steering - Wikipedia, the free encyclopedia (100 words) |
 | Beam steering: Changing the direction of the main lobe of a radiation pattern. |
| In radio systems, beam steering may be accomplished by switching antenna elements or by changing the relative phases of the rf signals driving the elements. |
| In optical systems, beam steering may be accomplished by changing the refractive index of the medium through which the beam is transmitted or by the use of mirrors or lenses. |
| Agile optical beam steering system - Patent 4823402 (8139 words) |
| The expanded beams 34a and 34b impinge on separate gimbaled steering mirrors 36a and 36b, which are capable of directing the beams over the large field of regard of the system, as indicated by the beams 38a and 38b. |
| The beam is focused onto a focal plane 47 by the eyepiece array 48, each eyepiece in the array cooperating with a telescope mirror 50 to produce expanded multiple beams 52, each of which impinges on one of an array of gimbaled plane mirrors 36'. |
| A transmitted beam from the transmitter 80 passes through the beam splitter 96 and is reflected from the first scanning mirror 86, and then reflected from the reflective diffraction grating 90, and from the reflective diffraction grating 94 onto one of the elements of the eyepiece array 98. |
Feeds |
Contact