Supplier and Customer Concentrations	12 Months Ended
Jun. 30, 2022
Supplier and Customer Concentrations
Supplier and Customer Concentrations	16. Supplier and Customer Concentrations The Company utilizes a number of glass compositions in manufacturing its molded glass aspheres and lens array products. These glasses or equivalents are available from a large number of suppliers, including CDGM Glass Company Ltd., Ohara Corporation, and Sumita Optical Glass, Inc. Base optical materials, used in certain of the Company’s specialty products, are manufactured and supplied by a number of optical and glass manufacturers. The Company also utilizes major infrared material suppliers located around the globe for a broad spectrum of infrared crystal and glass. The Company believes that a satisfactory supply of such production materials will continue to be available, however, at higher, inflationary prices largely due to the war in the Ukraine, although there can be no assurance in this regard. In fiscal year 2022, the Company had sales to three customers that comprised an aggregate of approximately 35% of its annual revenue, and 13% of its June 30, 2022 accounts receivable. Sales to these customers as a percentage of our fiscal year 2022 revenue include one customer at 19%, another customer at 9%, and the third customer at 7%. One of these customers comprised 7% of accounts receivable, a second customer comprised 6% of accounts receivable and the other customer had no accounts receivable balance as of June 30, 2022. In fiscal year 2021, the Company had sales to three customers that comprised an aggregate of approximately 38% of its annual revenue, and 31% of its June 30, 2021 accounts receivable. Sales to these customers as a percentage of our fiscal year 2021 revenue include one customer at 18%, another customer at 10%, and the third customer at 10%. One of these customers comprised 21% of accounts receivable, a second customer comprised 10% of accounts receivable and the other customer had no accounts receivable balance as of June 30, 2021. The loss of any of these customers, or a significant reduction in sales to any such customer, would adversely affect the Company’s revenues. In fiscal year 2022, 61% of the Company’s net revenue was derived from sales outside of the U.S., with 95% of foreign sales derived from customers in Europe and Asia. In fiscal year 2021, 68% of the Company’s net revenue was derived from sales outside of the U.S., with 95% of foreign sales derived from customers in Europe and Asia.

Supplier and Customer Concentrations

12 Months Ended

Jun. 30, 2022

Supplier and Customer Concentrations

16. Supplier and Customer Concentrations

The Company utilizes a number of glass compositions in manufacturing its molded glass aspheres and lens array products. These glasses or equivalents are available from a large number of suppliers, including CDGM Glass Company Ltd., Ohara Corporation, and Sumita Optical Glass, Inc. Base optical materials, used in certain of the Company’s specialty products, are manufactured and supplied by a number of optical and glass manufacturers. The Company also utilizes major infrared material suppliers located around the globe for a broad spectrum of infrared crystal and glass. The Company believes that a satisfactory supply of such production materials will continue to be available, however, at higher, inflationary prices largely due to the war in the Ukraine, although there can be no assurance in this regard.

In fiscal year 2022, the Company had sales to three customers that comprised an aggregate of approximately 35% of its annual revenue, and 13% of its June 30, 2022 accounts receivable. Sales to these customers as a percentage of our fiscal year 2022 revenue include one customer at 19%, another customer at 9%, and the third customer at 7%. One of these customers comprised 7% of accounts receivable, a second customer comprised 6% of accounts receivable and the other customer had no accounts receivable balance as of June 30, 2022. In fiscal year 2021, the Company had sales to three customers that comprised an aggregate of approximately 38% of its annual revenue, and 31% of its June 30, 2021 accounts receivable. Sales to these customers as a percentage of our fiscal year 2021 revenue include one customer at 18%, another customer at 10%, and the third customer at 10%. One of these customers comprised 21% of accounts receivable, a second customer comprised 10% of accounts receivable and the other customer had no accounts receivable balance as of June 30, 2021. The loss of any of these customers, or a significant reduction in sales to any such customer, would adversely affect the Company’s revenues.

In fiscal year 2022, 61% of the Company’s net revenue was derived from sales outside of the U.S., with 95% of foreign sales derived from customers in Europe and Asia. In fiscal year 2021, 68% of the Company’s net revenue was derived from sales outside of the U.S., with 95% of foreign sales derived from customers in Europe and Asia.