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Using Tube Lenses with Infinity Corrected Objectives

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Using Tube Lenses with Infinity Corrected Objectives

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In order to create an image with an infinity-corrected objective, a tube lens must be used to focus the image. One advantage to using an infinity-corrected objective with a tube lens is that there can be a space between the objective and tube lens. The space allows additional optical components to be inserted into the system, such as optical filters or beamsplitters. The distance between an infinity-corrected objective and the tube lens (L) can be varied from the recommended or optimal, but this will affect the image field diameter.

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