Assisted 2x2 Fiber-optic & Electric Rotary Joint - 24 contacts
The 2x2 Assisted Fiber-optic & Electric Rotary Joint allows friction-less rotation of 2 independent optical channels and 24 electrical contacts thanks to motorized assistance. The rotary joint detects torsion in fiber-optic patch cords connecting it to a moving animal, turning the rotor and allowing the animal to move freely without discomfort.
The two optical inputs use a standard FC connector, while the optical output uses two M3 receptacle. Each optical channel is independent and features near zero crosstalk. The 24 electrical contacts are accessible using either a combo of an HDMI connector plus 4 auxiliary contacts or dual Omnetics PZN-12 connectors.
This configuration uses achromatic doublet lenses to ensure consistent performance on the entire visible range from 450 to 650 nm, fiber-optic numerical aperture is limited to NA 0.22. This rotary joint is optimal for use in optogenetics, allowing two regions of the brain to be activated independently.
Optical Fiber 200 µm core - NA0.22
* contact us for different optical fiber
Transmission > 50 % (60% typical) Variation < 3 % peak-to-peak Optical Connectors
stator : 2 x FC receptacle
rotor : 2 x M3 receptacle
Wavelength Range 450-600 nm Electrical Connectors see options Number of contacts 24 Electrical contacts Contact Material Gold Contact Resistance < 800 mΩ Maximum Current rating 2 A per contact Power Supply (torque assistance) 5 VDC - mini USB (included) Start up Torque < 20 µN·m
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