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Revenue Recognition and Contracts with Customers - Company's total revenue by major product lines (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Revenue $ 1,158,882 $ 1,923,400 $ 4,718,115 $ 6,114,877
Smart Glasses and iWear Video Headphone Sales [Member]        
Revenue 1,049,207 1,839,250 3,163,425 4,959,496
OEM Product Sales [Member]        
Revenue     951,570 766,065
Waveguide and Display Engine Sales [Member]        
Revenue 10,000 3,250 152,499 127,900
Engineering Services [Member]        
Revenue $ 99,675 $ 80,900 $ 450,621 $ 261,416