From Edmund Optics Inc.
Compound microscopes differ from simple magnifiers in that there are two separate magnification steps that occur instead of one. The objective lens is nearest the subject under observation and provides a magnified real image. The eyepiece magnifies the real image provided by the objective and yields a virtual image appropriate for the human eye. Remember that the eye has its own lens, which relays virtual images onto the retina.
Microscopes have been standardized over time to simplify design and manufacture. Most microscopes employ the Deutsche Industrie Norm, or DIN standard configuration, while the Japanese Standard (JIS) is less commonly used. DIN microscopes begin with an object-to-image distance of 195mm, and then fix the object distance (with respect to the rear shoulder of the objective) at 45mm. The remaining 150mm distance to the eyepiece field lens sets the internal real image position, defined as 10mm from the end of the mechanical tube. Objective lens thread is the same for DIN and JIS, that is 0.7965" (20.1mm) diameter, 36 TPI, 55° Whitworth.
Products & Services
Measuring Microscopes
Measuring microscopes are used by toolmakers for measuring the properties of tools. These microscopes are often used for dimensional measurement with lower magnifying powers to allow for brighter, sharper images combined with a wide field of view.
Microscope Lenses and Objectives
Microscope lenses and microscope objectives include eyepieces or oculars, optical filters, objectives, adapters or mounts, condensers and other optical components for microscopy.
Digital and Video Microscopes
Digital and video microscopes are instruments that use digital technology to magnify images of objects. They include built-in cameras and a series of high-powered lenses that provide superior image quality and resolution.
Optical and Light Microscopes
Optical and light microscopes use the visible or near-visible portion of the electromagnetic spectrum to magnify images of objects.
Specialty Microscopes
Specialty microscopes are designed for specific applications such as metallurgy or gemology. They use specialized techniques or technologies such as acoustics to produce magnification.
Topics of Interest
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