Document and Entity Information - shares	6 Months Ended
	Jun. 29, 2019	Aug. 05, 2019
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 29, 2019
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
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
Title of 12(b) Security	Common Stock, par value $0.01
Trading Symbol	KOPN
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		84,086,324
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Entity Central Index Key	0000771266
Current Fiscal Year End Date	--12-28