REVENUE RECOGNITION (Details -Revenues) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Revenues	$ 5,242,579	$ 5,048,065	$ 14,388,123	$ 16,020,327
Engineering Design Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	2,274,679	1,400,780	6,440,895	4,745,358
Optical Components [Member]
Disaggregation of Revenue [Line Items]
Revenues	2,402,622	2,609,983	6,285,808	7,842,804
Medical Device Products And Assemblies [Member]
Disaggregation of Revenue [Line Items]
Revenues	565,278	1,037,302	1,661,420	2,832,165
Technology Rights [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 0	$ 0	$ 0	$ 600,000