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Cover - shares
 9 Months Ended
Mar. 31, 2022
May 10, 2022
Cover [Abstract]    
Entity Registrant Name LIGHTPATH TECHNOLOGIES, INC.  
Entity Central Index Key 0000889971  
Document Type 10-Q  
Amendment Flag false  
Current Fiscal Year End Date --06-30  
Entity Small Business true  
Entity Shell Company false  
Entity Emerging Growth Company false  
Entity Current Reporting Status Yes  
Document Period End Date Mar. 31, 2022  
Entity Filer Category Non-accelerated Filer  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2022  
Entity Common Stock Shares Outstanding   27,046,790
Document Quarterly Report true  
Document Transition Report false  
Entity File Number 000-27548  
Entity Incorporation State Country Code DE  
Entity Tax Identification Number 86-0708398  
Entity Interactive Data Current No  
Entity Address Address Line 1 2603 Challenger Tech Ct  
Entity Address Address Line 2 Suite 100  
Entity Address City Or Town Orlando  
Entity Address State Or Province FL  
Entity Address Postal Zip Code 32826  
City Area Code 407  
Local Phone Number 382-4003  
Trading Symbol LPTH  
Security Exchange Name NASDAQ  
Security 12b Title Class A Common Stock, par value $0.01