INSPECTION WINDOW

摘要

An apparatus comprises an optical pane transparent to infrared radiation. The pane includes first and second sides, a periphery, and first and second retention regions. A frame defines an opening that can accept the pane and includes a pane retention region. The pane retention region includes a first pane support surface and a second pane support surface, each configured to support the optical pane at the retention region. Additionally, a retainer is configured to secure the optical pane in the opening and includes a first retaining surface mated to the first pane support surface of the frame and configured to support the optical pane at the second side of the first retention region, and a second retaining surface mated to the second pane support surface of the frame and configured to support the optical pane at the second side of the second retention region.