Revenue Recognition and Contracts with Customers - Company's total revenue by major product lines (Details)	3 Months Ended												12 Months Ended
	Dec. 31, 2021 USD ($) product	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2021 USD ($) product	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Revenue	$ 3,314,000	$ 3,018,774	$ 2,916,538	$ 3,915,389	$ 4,233,000	$ 2,779,000	$ 3,037,000	$ 1,532,000	$ 1,953,000	$ 1,159,000	$ 2,186,000	$ 1,373,000	$ 13,164,933	$ 11,581,496	$ 6,670,604
Number of major product lines | product	4												4
Smart Glasses Sales
Revenue													$ 12,784,600	10,081,209	4,893,384
OEM Product Sales
Revenue															951,570
Waveguide and Display Engine Sales
Revenue															152,499
Engineering Services
Revenue													$ 380,333	$ 1,500,287	$ 673,151