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.
Electrical Connector HDMI + 4 (Molex Micro-fit 3.0 Dual Row 4 Contacts Connector)
2x PZN-12 (Omnetics Polarized Nano 12 Contacts)
2x HARWIN (Datamate L-Tek 12 pos 2 row)
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 Simple Resistance < 0.5 Ω Maximum Current rating 2 A per contact Rotation Speed up to 40 rpm Power Supply (torque assistance) 10W mini USB (included) Start up Torque < 200 µN·m
Tests that have been performed showed the compatibility of the following third party systems with the Assisted Electrical Rotary Joints – 24 channels:
Compatibility of the rotary joint with other devices Company Product Connectors Adaptor (if necessary) Blackrock Microsystem CerePlex M HDMI+4 - CerePlex µ HDMI+4 - Intan Technologies RHD 16/32/64/128ch 2xPZN12 - 2xHARWIN Harwin 12 to Omnetics 12 Adapter Neuropixels Neuropixels 1.0 HDMI+4 Adapter HDMI Neuropixel Neuropixels 2.0
HDMI+4 Adapter HDMI Neuropixel Pinnacle Technology Inc EEG/EMG 3CH HDMI+4 Adapter HDMI PINNACLE 3 channels EEG/EMG 4CH HDMI+4 Adapter HDMI PINNACLE 4 channels White Matter LLC eCube HDMI+4 Provided by White Matter LLC
Assisted 2x2 Fiber-optic & Electric Rotary Joint
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