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This is done by turning the knurled knob on the condensers illustrated in Figures 2-6. There is a small yellow arrow or index mark located on this knob that indicates the relative size of the aperture when compared to the linear gradation on the condenser housing.
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20 Δεκ 2023 · A condenser is an optical lens system that focuses and controls the illumination that passes through the specimen. Positioned beneath the microscope stage, the condenser is crucial in directing light onto the specimen. It contributes to the overall brightness and clarity of the image.
Different brands and different models of microscopes position the key parts differently. When you first sit in front of a microscope, you should always take a second to find the key parts, especially the focus knobs, the condenser adjustment knob (if present), and the stage control knobs.
On upright microscopes, the condenser is located beneath the stage and serves to gather wavefronts from the microscope light source and concentrate them into a cone of light that illuminates the specimen with uniform intensity over the entire viewfield.
1 Ιουλ 2022 · The condenser knob on a microscope controls the amount of light that enters the lens system. By turning the knob, you can increase or decrease the amount of light passing through the condenser, which will, in turn, affect the brightness of your specimen.
Locate beneath the stage the lever with knurled knob that controls the substage condenser focus (Figure 7-1). Notice that rotating this lever throughout its inclined groove makes the substage condenser move up and down.
23 Μαΐ 2024 · Learn how to properly adjust the condenser aperture stop for optimized contrast modulation in transmitted light brightfield microscopy. Key Learnings: The condenser is an optical system used to illuminate the specimen plane homogeneously, with good contrast and low stray light.
