Patent ID: 8269159

Claim:
A night vision goggle system, comprising a bridge, a first inner optical module, a second inner optical module, and an outer module, wherein: each of the first inner optical module, the second inner optical module, and outer module comprises: a housing having a first end and a second end; and an image intensifier situated in the housing that receives energy through the first end and passes an intensified image out through the second end for presentation to an eye of an observer; the housing of each of the first and second inner optical modules also includes an attachment mechanism configured for removably attaching the outer optical module to that inner optical module in a position that adds to the horizontal field of view of an eye at the second end of that inner optical module; and the outer optical module, the first inner optical module, and the second inner optical module are configured so that the outer optical module is removably attachable to the attachment mechanism of either the first inner optical module or the second inner optical module at any given time.