Interface facility

An apparatus, comprising:

• an output optical device to magnetically couple to an input device assembly, the output optical device including an eyecup assembly including a surface magnetically attracted to the input device assembly;
• wherein the surface is configured to rotationally align the input device assembly with the output optical device, maintaining an alignment of an optical axis associated with the input device assembly with an optical axis of a lens of the output optical device for capturing an image through the lens of the output optical device;
• wherein:
• one of the assemblies is latchable to the other of the assemblies, when the assemblies are magnetically connected, to constrain rotation of an eyecup of the eyecup assembly relative to the input device assembly, or
• the assemblies include a mechanical securing feature to constrain rotation of the eyecup relative to the input device assembly, when the assemblies are magnetically connected.

An interface facility for connecting an output optical device and an input device assembly, the output optical device including an eyecup assembly, the interface facility comprising:

• a first facility element for the output optical device;
• a second facility element for the input device assembly, the second facility element to magnetically attach to the first facility element;
• the first and second facility elements being configured to connect to each other in a connected condition and to detach from each other;
• the first facility element being registered with a first optical axis associated with the output optical device;
• the second facility element being registered with a second optical axis associated with the input device assembly;
• and
• the first and second optical axes being registered with each other when the first and second facility elements are in the connected condition, for capturing an image with a camera through a lens of the output optical device;
• wherein the interface facility includes a plurality of sections, including:
• a first section to magnetically connect the second facility element to the first facility element;
• and
• a second section comprising a latch facility to constrain rotation of the second facility element relative to the first facility element when the first and second facility elements are magnetically connected.

An interface facility for connecting an output optical device and an input device assembly, the output optical device including an eyecup assembly, the interface facility comprising:

• a first facility element for the output optical device;
• a second facility element for the input device assembly, the second facility element to magnetically attach to the first facility element;
• the first and second facility elements being configured to connect to each other in a connected condition and to detach from each other;
• the first facility element being registered with a first optical axis associated with the output optical device;
• the second facility element being registered with a second optical axis associated with the input device assembly;
• and
• the first and second optical axes being registered with each other when the first and second facility elements are in the connected condition, for capturing an image with a camera through a lens of the output optical device;
• wherein one of the eyecup assembly and the input device assembly includes recesses, and the other of the eyecup assembly and the input device assembly includes features to mate with the recesses to constrain rotation of one of the eyecup and the input assembly relative to the other of the eyecup and the input assembly.