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Polarized lenses need to be fit with the film at the correct axis in order to block horizontal glare. The axis of the polarizing filter is placed 90° to the plane of the polarized light. The 180° or horizontal axis of the lens is oriented 90° and 180° angles 90° from the polarized axis.
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...
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.
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.
Polarized lenses selectively absorb glare to allow good optical acuity and comfort, even in bright sunlight. But not all polarized lenses are equal in quality and performance.
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
fication is a true polarized light microscope (PLM), or, simply, polarizing microscope. 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-
