a lens and shutter assembly fixedly supported in {HEAD ~ said second housing}, said lens having {TAIL ~ an optical axis} substantially parallel with said first axis; and 
a lens and shutter assembly fixedly supported in { HEAD ~ said second housing } , said lens having { TAIL ~ an optical axis } substantially parallel with said first axis ; and
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH