Supplier and Customer Concentrations	12 Months Ended
Jun. 30, 2024
Supplier and Customer Concentrations
Supplier and Customer Concentrations	17. 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 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. Historically, the Company has sourced Germanium from suppliers located in Russia and China. At the start of the war in Ukraine, all purchases of Germanium from vendors in Russia ceased and the Company has been purchasing Germanium only from vendors in China. On July 4, 2023, China announced its intentions to impose some export restrictions on Germanium, requiring all international customers to provide an end user statement for approval before receiving an export license. Since that announcement, supply of Germanium has been disrupted, though not completely stopped. To date, the Company has mostly been able to purchase the Germanium that has been needed, however the availability, lead time and ability to receive export licenses varies between vendors. The Company has strategically reduced the level of Germanium-based orders that it accepts, and continues to work with its customers to design in alternative materials such as its BlackDiamond glasses. The Company believes that a satisfactory supply of such production materials will continue to be available, however, with longer lead times and higher prices for Germanium in particular, although there can be no assurance in this regard. In fiscal year 2024, the Company had sales to three customers that comprised an aggregate of approximately 25% of its annual revenue, and 16% of its June 30, 2024 accounts receivable. Sales to these customers as a percentage of our fiscal year 2024 revenue include one customer at 12%, another customer at 7%, and the third customer at 6%. One of these customers comprised 11% of accounts receivable, a second customer comprised 3% of accounts receivable and a third customer comprised 1% of the accounts receivable balance as of June 30, 2024. In fiscal year 2023, the Company had sales to three customers that comprised an aggregate of approximately 24% of its annual revenue, and 25% of its June 30, 2023 accounts receivable. Sales to these customers as a percentage of our fiscal year 2023 revenue include one customer at 11%, another customer at 7%, and the third customer at 6%. One of these customers comprised 12% of accounts receivable, a second customer comprised 9% of accounts receivable and a third customer comprised 5% of the accounts receivable balance as of June 30, 2023. 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 2024, 39% of the Company’s net revenue was derived from sales outside of the U.S., with 94% of foreign sales derived from customers in Europe and Asia. In fiscal year 2023, 50% of the Company’s net revenue was derived from sales outside of the U.S., with 93% of foreign sales derived from customers in Europe and Asia.

Supplier and Customer Concentrations

12 Months Ended

Jun. 30, 2024

Supplier and Customer Concentrations

17. 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 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. Historically, the Company has sourced Germanium from suppliers located in Russia and China. At the start of the war in Ukraine, all purchases of Germanium from vendors in Russia ceased and the Company has been purchasing Germanium only from vendors in China. On July 4, 2023, China announced its intentions to impose some export restrictions on Germanium, requiring all international customers to provide an end user statement for approval before receiving an export license. Since that announcement, supply of Germanium has been disrupted, though not completely stopped. To date, the Company has mostly been able to purchase the Germanium that has been needed, however the availability, lead time and ability to receive export licenses varies between vendors. The Company has strategically reduced the level of Germanium-based orders that it accepts, and continues to work with its customers to design in alternative materials such as its BlackDiamond glasses. The Company believes that a satisfactory supply of such production materials will continue to be available, however, with longer lead times and higher prices for Germanium in particular, although there can be no assurance in this regard.

In fiscal year 2024, the Company had sales to three customers that comprised an aggregate of approximately 25% of its annual revenue, and 16% of its June 30, 2024 accounts receivable. Sales to these customers as a percentage of our fiscal year 2024 revenue include one customer at 12%, another customer at 7%, and the third customer at 6%. One of these customers comprised 11% of accounts receivable, a second customer comprised 3% of accounts receivable and a third customer comprised 1% of the accounts receivable balance as of June 30, 2024. In fiscal year 2023, the Company had sales to three customers that comprised an aggregate of approximately 24% of its annual revenue, and 25% of its June 30, 2023 accounts receivable. Sales to these customers as a percentage of our fiscal year 2023 revenue include one customer at 11%, another customer at 7%, and the third customer at 6%. One of these customers comprised 12% of accounts receivable, a second customer comprised 9% of accounts receivable and a third customer comprised 5% of the accounts receivable balance as of June 30, 2023. 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 2024, 39% of the Company’s net revenue was derived from sales outside of the U.S., with 94% of foreign sales derived from customers in Europe and Asia. In fiscal year 2023, 50% of the Company’s net revenue was derived from sales outside of the U.S., with 93% of foreign sales derived from customers in Europe and Asia.