Humidity tolerant scan lens

a, bA lens has a lens body, reinforcing extensions and a clear aperture surrounded on top and bottom by lens body. The lens is suitable for spot scanning. The lens is made of a water absorbing material, such as most polymers, particularly acrylate polymers. Aluminum sheets as vapor barriers are atta...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Cannon, Roger Steven, Dodds, Dana Allen, Heink, Philip Jerome, Paterson, Robert LeRoy, Pawley, Daniel Eugene, Routt, Jr, Wilson Morgan
Format: Patent
Sprache:eng
Online-Zugang:Volltext bestellen
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Beschreibung
Zusammenfassung:a, bA lens has a lens body, reinforcing extensions and a clear aperture surrounded on top and bottom by lens body. The lens is suitable for spot scanning. The lens is made of a water absorbing material, such as most polymers, particularly acrylate polymers. Aluminum sheets as vapor barriers are attached on each side of the lens body. This results in excellent resistance to change or distortion in high humidity environments.