Document and Entity Information - USD ($)	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2021	Sep. 21, 2021
Document And Entity Information
Entity Registrant Name	PRECISION OPTICS CORPORATION, INC.
Entity Central Index Key	0000867840
Document Type	10-K
Document Period End Date	Jun. 30, 2021
Amendment Flag	false
Current Fiscal Year End Date	--06-30
Is Entity a Well-known Seasoned Issuer?	No
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Non-accelerated Filer
Entity Public Float		$ 15,147,628
Entity Common Stock, Shares Outstanding			13,282,476
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2021
Emerging Growth Company	false
Entity Small Business	true
Entity Shell Company	false
Interactive Data Current	Yes
Incorporation state country code	MA
Entity file number	001-10647
ICFR Auditor Attestation Flag	false