초록 ▼

At the reception site of a laser transmission system the received laser light beam is converted into a focusing cone of light. The cone of light is directed to partially illuminate the inner area of the quad photo detector array which is used to provide a highly accurate positional measurement of th

At the reception site of a laser transmission system the received laser light beam is converted into a focusing cone of light. The cone of light is directed to partially illuminate the inner area of the quad photo detector array which is used to provide a highly accurate positional measurement of the laser beam. A quad photo detector is utilized to measure deviation of the laser beam from its ideal line-of-sight and provide sensing signals defining the deviation to enable its corrective adjustment. A high speed photo detector located centrally to and behind a central aperture of the quadrant photo detector permits the detection of the laser light beam voice and data.

대표청구항 ▼

[ The invention claimed is:] [1.] A columnar light beam reception system comprising:means for collimating the light beam;a position sensing detector for determining accuracy of the light beam alignment accuracy;a voice and data receptor located behind the position sensing detector for receiving the

[ The invention claimed is:] [1.] A columnar light beam reception system comprising:means for collimating the light beam;a position sensing detector for determining accuracy of the light beam alignment accuracy;a voice and data receptor located behind the position sensing detector for receiving the light beam and recovering voice and data information therefrom; andmeans responsive to the position sensing detector for actuating changes in position of the voice and data receptor to enhance the received light beam.