Optical glasstypes

Numerical aperture (NA) and opening angle (2θ) of an optical fiber are calculated by refractive indices of core and clad material. The equation is as follows (where n1= the index of refraction of the core glass, and n2= the index of refraction of the cladding glass):

Total internal reflections (TIR) is the phenomenon that reflection of the total amount of incident light at the boundary between two media (see Figure 2). The phenomenon occurs at the boundary between two mediums having different refractive indices, such that if the incident angle in the first medium is greater than the critical angle, then all the light is reflected back to that medium.

What is optical glassmade of

An optical fiber used in light guides consists of a core surrounded by a clad layer (see Figure 1). - Core is made of optical glass which has an excellent transmission property. - Clad is made of weather-resistant glass, and works as a covering material. This structure of fiber allows light to travel along the fiber through repeated total internal reflections* inside the core from one end to the other.

Properties ofoptical glass

Applying the principle of TIR and taking advantage of accumulated optical glass technology, Sumita offers a wide variety of optical fibers with different N.A.s.

An optical glass fiber is a flexible, transparent thread made by glass. The thinnest glass optical fiber Sumita draws has a diameter of 30 micrometers (μm), a mere half the width of an average human hair. Its thin profile makes the glass flexible.

Munday Scientific offers a wide range of Olympus microscopes new, used and refurbished with competitive pricing.  We focus on used and refurbished Pathology and Mohs microscopes, but stock microscopes for all applications.  If not new, the microscopes are fully serviced, tested and warrantied.  By purchasing a used microscope you will have a faster lead time and a fully serviced, great working microscope at almost 50 percent of the price of a new system.

Olympus microscopes are over a century old and have been the top pick of microscopes for doctors, professors, researchers and students.  The Olympus BX series microscope is the industry standard for Pathologists and Mohs surgery centers across the US.  The most popular microscope we sell is the Olympus BX41.  This microscope is absolutely excellent and our top pick for clinical applications.

What is optical glassused for

Olympus upright microscopes provide excellent ergonomics for comfortable operation and high quality optics for high color reproducibility.  Modular options allow different observation styles like polarization, brightfield, darkfield, fluorescence and phase contrast.  The Olympus stereo microscopes offer the same quality of design with a clear stereoscopic view.  It also offers a wide zoom ratio for smooth macro-to-micro viewing.

Optical Glassprice

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Like a hose carries water from one place to another, an optical fiber confine and guide light along its length. What keeps light in the hose is the structure of the optical fiber, which is made up of two separate parts. At the center of an optical fiber is a thin glass tube called a "Core" that transports light. Wrapped around the outside of the core is another layer of glass called the "Cladding", reflecting light back into the core causing light waves to travel the length of the fiber. If the core is the part that allows water to pass through, the cladding is the hose. A light guide is made up of such optical fibers; one light guide can have dozens to hundreds of thousands of such optical fibers bundled together.