Coupler for transmitting signals across a rotating interface

H - Electricity – 04 – N

Patent

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Details

H04N 5/225 (2006.01) G02B 6/36 (2006.01) G02B 6/38 (2006.01) H01R 11/30 (2006.01) H01R 13/66 (2006.01) H01R 39/00 (2006.01) H01R 39/64 (2006.01) H04N 1/40 (2006.01)

Patent

CA 2290438

A coupler (20) for transmitting signals across a rotating interface (22). The coupler (20) comprises a first part (24) and a second part (26) mounted for rotation about an axis with respect to the first part (24). The first part (24) comprises a first magnetic coil (30) and a first optical signal transmission device (32). The second part comprises a second magnetic coil (34) inductively coupled to the first magnetic coil (30) and a second optical signal transmission device (36). The first and second magnetic coils (30 and 34) are inductively coupled for transmitting electrical power across the rotating interface (22). The first and second optical signal transmission devices (32 and 36) are optically coupled for transmission of an optical signal therebetween. One of the first and second optical signal transmission devices (32 and 36) includes an electrical to optical signal conversion device (46), and the other of the first and second optical signal transmission devices includes an optical to electrical signal conversion device (48). The first and second optical signal transmission devices (32 and 36) preferably also include optical fibers. The coupler can be used to mount a video camera on a pan and tilt mechanism so that power, video, and control signals can be transmitted across the rotating interface (22).

Coupleur (20) destiné à transmettre des signaux via une interface rotative (22), qui comporte une première partie (24) et une seconde partie (26) montée de manière à tourner autour d'un axe par rapport à la première partie (24). La première partie (24) comprend un premier enroulement magnétique (30) et un premier dispositif (32) de transmission optique de signaux. La seconde partie comprend un second enroulement magnétique (34) couplé de manière inductive au premier enroulement magnétique (30) et un second dispositif (36) de transmission optique de signaux. Les premier et second enroulements magnétiques (30, 34) sont inductivement couplés afin de transmettre une puissance électrique via l'interface rotative (22). Les premier et second dispositifs (32, 36) de transmission optique de signaux sont optiquement couplés en vue de la transmission d'un signal optique entre eux. Le premier ou le second dispositif (32, 36) de transmission optique de signaux comporte un dispositif de conversion de signal électrique-optique (46) et l'autre dispositif comporte un dispositif de conversion de signal optique-électrique (48). Les premier et second dispositifs (32, 36) de transmission optique de signaux comportent également de préférence des fibres optiques. Ledit coupleur peut être utilisé pour monter une caméra vidéo sur un mécanisme panoramique et d'inclinaison si bien que les signaux de puissance, vidéo et de commande peuvent être transmis via l'interface rotative (22).

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