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Condensed Consolidated Statements of Operations (Unaudited) - USD ($)
 3 Months Ended
Mar. 27, 2021
Mar. 28, 2020
Revenues:    
Total revenues $ 11,676,369 $ 7,878,605
Expenses:    
Cost of product revenues 6,396,671 5,647,847
Research and development 3,563,300 2,339,748
Selling, general and administration 5,905,706 3,432,092
Total expenses 15,865,677 11,419,687
Loss from operations (4,189,308) (3,541,082)
Other income (expense):    
Interest income 8,744 73,406
Other (expense) income, net (1,150) 12,678
Foreign currency transaction gains (losses) 28,991 (172,993)
Total other income (expense) 36,585 (86,909)
Loss before provision for income taxes and net loss attributable to noncontrolling interest (4,152,723) (3,627,991)
Tax provision (33,000) (29,000)
Net loss (4,185,723) (3,656,991)
Net loss attributable to the noncontrolling interest 39,485 61,472
Net loss attributable to Kopin Corporation $ (4,146,238) $ (3,595,519)
Net loss per share    
Basic and diluted $ (0.05) $ (0.04)
Weighted average number of common shares outstanding    
Basic and diluted 87,378,288 82,536,416
Net Product Revenues [Member]    
Revenues:    
Total revenues $ 7,568,845 $ 5,919,206
Research And Development Revenues [Member]    
Revenues:    
Total revenues 3,560,743 $ 1,959,399
Other Revenues [Member]    
Revenues:    
Total revenues $ 546,781