WILMINGTON, Mass., Sept. 5 -- QC Optics Inc. has agreed to be acquired by KLA-Tencor Corp. Under the terms of the agreement, which was unanimously approved by QC Optics' board of directors, KLA-Tencor will pay $1 per share, or approximately $3 million for the outstanding shares of QC Optics. This represents an 88 percent premium over the company's most recent closing price. The transaction is expected to close in October and is subject to the approval of the stockholders of QC Optics and other customary closing conditions. QC Optics intends to file a preliminary proxy statement with the US Securities and Exchange Commission shortly.