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Cut-away diagrams of the objectives reveal internal lens elements, which are corrected for chromatic and spherical aberration. The objective on the left is a low-power 4x objective designed to view birefringent specimens at lower magnifications.
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THE SCIENCE OF POLARIZED LENSES. Technical Education. HOW POLARIZED LENSES ARE MADE. High quality polarized lenses, like SunRx® polycarbonate polarized lenses, ofer the best protection from harmful UV light and blinding glare.
A computer-interfaced polarized optical microscope with a laser source at 543.5 nm (Figure 9) was constructed on the optical bench and used to inspect the lenses on a microscopic scale and to...
A phase contrast microscope, a reflected-light (metallurgical) micro-scope, and a biomedical, clinical-type microscope fit-ted with polarizing filters, as are commonly provided, are inadequate. The microscope must be a true polar-izing microscope, as will be described later in detail. Figure 2-14.
Polarized light microscopy is capable of providing information on absorption color and optical path boundaries between minerals of differing refractive indices, in a manner similar to brightfield illumination, but the technique can also distinguish between isotropic and anisotropic substances.
High quality polycarbonate polarized lenses offer the best protection from harmful UV light and blinding glare. It’s important for anyone who sells or dispenses polarized lenses to understand how they work and to be able to explain to patients how they differ from conventional sun lenses.
A polarizing plate (polarizing filter) or polarizing prism is often used as the device to change nat-ural light to linearly polarized light (see 1.7). Configuring the primary and secondary polarizing devices in the orthogonal directions of each transmitting linearly polarized ray will cut the light. Such state in which the primary light polarizing