Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition and Contracts with Customers - Company's total revenue by major product lines (Details)

v3.21.2
Revenue Recognition and Contracts with Customers - Company's total revenue by major product lines (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Revenue $ 3,018,774 $ 2,778,721 $ 9,850,702 $ 7,347,280
Smart Glasses Sales        
Revenue $ 3,018,774 2,686,166 9,657,589 6,392,865
Engineering Services        
Revenue   $ 92,555 $ 193,113 $ 954,415