08-11-2012 дата публикации
Номер: US20120280115A1
Принадлежит:
The present invention relates generally to optical rotary joints () for enabling optical communication between a rotor and a stator, and to improved optical reflector assemblies for use in such optical rotary joints. 137-. (canceled)3850. An optical reflector assembly () for enabling optical communication between a rotor and a stator , said rotor having a longitudinal axis , comprising:{'b': 51', '52, 'sub': 1', '2', '1, 'a first member () having a concave first reflective surface (), a line (L) in a plane taken through said first reflective surface being configured as a portion of an ellipse having first and second focal points (F, F), said first focal point (F) being positioned substantially coincident with said rotor axis;'}{'b': 53', '51, 'a second member () mounted on one side of said first member ();'}{'b': 56', '51, 'a third member () mounted on the opposite side of said first member ();'}{'b': 54', '53', '55, 'a fourth member () mounted on said second member () and having a second reflective surface () having a longitudinal axis;'}{'b': 58', '56', '52', '55, 'sub': '1', 'receiving optics () mounted on said third member () such that an optical signal seen as originating from said first focal point (F), falling incident on said first reflective surface (), and being further reflected toward said second reflective surface () will be further reflected toward said receiving optics; and receiver'}{'b': '59', 'an optical fiber () having an entrance end and an exit end, said entrance end being arranged adjacent to said receiving optics; and'}{'b': 52', '55', '52', '52', '55', '55', '52, 'sub': 2', '2', '2, 'wherein said first reflective surface () is configured as a portion of an ellipsoid and said second reflective surface () is configured as a portion of a cone positioned at the second focal point (F) of said first reflective surface () such that an optical signal reflected by said first reflective surface () toward said second focal point (F) converges to a spot ...
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