6g 



BELL SYSTEM TECHNICAL JOURNAL 



Fig. 10 — Lenses constructed by spraying conducting paint on cellophane sheets. 



WOOD SPACERS 



CELLOPHANE 

 SHEETS 



OUTLINE OF SPRAYED 

 PORTION or SHEETS 



Fig. 11— Construction details of the lenses of Fig. 10. 



was made by affixing copper foil strips to cellophane sheets and stacking the 

 sheets with no spacing other than the sheets themselves between them. 



