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Cover Page - USD ($)
 12 Months Ended
Dec. 29, 2018
Mar. 08, 2019
Jun. 30, 2018
Cover page.      
Document Type 10-K/A    
Document Annual Report true    
Document Period End Date Dec. 29, 2018    
Document Transition Report false    
Entity File Number 0-19882    
Entity Registrant Name KOPIN CORPORATION    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 04-2833935    
Entity Address, Address Line One 125 North Drive,    
Entity Address, City or Town Westborough    
Entity Address, State or Province MA    
Entity Address, Postal Zip Code 01581-3335    
City Area Code 508    
Local Phone Number 870-5959    
Title of 12(b) Security Common Stock, par value $0.01    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 164,583,000
Entity Common Stock, Shares Outstanding   76,282,062  
Amendment Flag true    
Document Fiscal Year Focus 2018    
Document Fiscal Period Focus FY    
Trading Symbol KOPN    
Amendment Description Kopin Corporation (the "Company" or "Kopin") is filing this Amendment No. 1 on Form 10-K/A (this "Form 10-K/A") to its Annual Report on Form 10-K for the fiscal year ended December 29, 2018, originally filed with the U.S. Securities and Exchange Commission (the "SEC") on March 14, 2019 (the "Original Form 10-K") to update the Report of Independent Registered Public Accounting Firm to indicate that the consolidated balance sheet as of December 30, 2017 was audited. In addition, the Company is correcting immaterial misstatements it has identified in its previously-issued consolidated financial statements and related financial information for the fiscal years ended December 29, 2018, December 30, 2017 and December 31, 2016.    
Entity Central Index Key 0000771266    
Current Fiscal Year End Date --12-29