Lambda 20/Lambda 40 Installation and Maintenance Guide - VTP UP
Lambda 20/Lambda 40 Installation and Maintenance Guide - VTP UP
Lambda 20/Lambda 40 Installation and Maintenance Guide - VTP UP
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System DescriptionSystem DescriptionFeaturesKeyboard <strong>and</strong>Display CoverLamp compartmentPower switchSample compartmentConnector panelFigure 16 <strong>Lambda</strong> <strong>20</strong>, <strong>40</strong> Spectrometer FeaturesOptical System <strong>Lambda</strong> <strong>20</strong>The <strong>Lambda</strong> <strong>20</strong> UV/Vis Spectrometer features an all-reflecting optical system. Theoptical components are coated with silica for durability. A holographic grating isused in the monochromator.The optical system is depicted schematically in Figure 17.The monochromator is a holographic concave grating with 1053 lines/mm inthe center.Two radiation sources, a deuterium lamp <strong>and</strong> a halogen lamp, cover the workingwavelength range of the spectrometer.75
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