Patent ID: 9291777
Filing Date: 2016-03-22
CPC Classification: G02B

Claim Text:
1. An optical rotary transmitter having two parts spaced a distance apart from one another that are rotatable about a shared central axis in relation to one another, the first one of which has a first circular light coupler ( 10 ) and the second one of which comprises a second circular light coupler ( 20 ), their light entrance/exit surfaces facing one another and each of the light couplers ( 10 , 20 ) consisting of collimators combined into a collimator arrangement ( 16 , 26 ) to which optical coupling elements are connected and send and receive parallel beam bundles, characterized in that at least one additional optical coupling element (e.g., 41 , 43 ) is coupled to each collimator ( 40 ) so that the collimator ( 40 ) generates an additional parallel beam bundle assigned to this second coupling element, said beam bundle forming an angle with a parallel beam bundle ( 44 , 45 , 46 ) corresponding to the first optical coupling element (e.g., 42 ), the optical rotary transmitter characterized in that the circles on which the collimators ( 11 , 21 ) of the first collimator arrangement ( 16 ) and the second collimator arrangement ( 26 ) are situated have different diameters, and the optical axes of opposite collimators of the first collimator arrangement ( 16 ) and of the second collimator arrangement ( 26 ) are aligned with one another and form an angle with the shared central axis of the two collimator arrangements ( 16 , 26 ).