REVENUE RECOGNITION (Tables)

6 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Schedule of disaggregation of revenues

	Three Months Ended December 31,				Six Months Ended December 31,
	2021		2020		2021		2020
Engineering Design Services	$	1,636,482	$	847,988	$	2,127,253	$	1,437,220
Optical Components		1,486,006		1,398,213		2,945,332		2,874,298
Medical Device Products and Assemblies		774,553		539,249		1,160,800		1,231,833
Total Revenues	$	3,897,041	$	2,785,450	$	6,233,385	$	5,543,351

Schedule of contract liabilities

	Three Months Ended December 31,						Six Months Ended December 31,
	2021			2020			2021			2020
Contract liabilities, beginning of period	$	336,572		$	206,665		$	450,084		$	417,059
Assumed in business acquisition		826,679			–			826,679			–
Unearned revenue received from customers		537,137			127,571			742,526			171,703
Revenue recognized		(562,918	)		(182,359	)		(881,819	)		(436,885	)
Contract liabilities, end of period	$	1,137,470		$	151,877		$	1,137,470		$	151,877