v4l2 Identifying /dev/video* via lsusb

I'm writing a script that must use a particular camera plugged in to my system.

$ lsusb|grep C930e
Bus 001 Device 011: ID 046d:0843 Logitech, Inc. Webcam C930e

How can one programatically discover the /dev/video* device corresponding to a given device ID from lsusb output?

It seems like this should be easy, but apparently I am missing a keyword. :-D