Glossy convex surfaces can cause reflections when observed with the ring light, which is standard equipment on our microscopes, making observation difficult.
■ Light
| When using a standard ring light, the impact of reflections becomes more significant. | Attaching a polarizing filter to the lens tip and the light side when using ring light can improve the reflections to some extent. |
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Using twin-arm light can further reduce reflections, as shown in the photo below. (Angle adjustments and other settings are necessary) |
Simply adding a polarizing filter to the lens alone can further improve the results, as shown in the photo below. |
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Observation of a convex lens (object) using the same method (ring light → low-angle twin-arm light). |
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| (Note) For lenses, since the lens itself is transparent, the background color becomes important. In the above example, the background is white, and the lens is not placed directly on the surface but is slightly elevated for observation. | |
