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About Optical and Light Microscopes
Optical and light microscopes use the visible or near-visible portion of the electromagnetic spectrum to magnify images of objects. There are two basic types of devices. Stereomicroscopes use two light paths for three-dimensional (3D) viewing. They provide high depth perception, low resolution, and low magnification. Some devices include a built-in light source and zoom capabilities. Compound microscopes are optical and light microscopes that use a single light path. Both monocular and binocular versions are available. Typically, compound microscopes are used for viewing very small specimens such as cells, pond life samples, and other microscopic life forms. They have low depth perception, but high resolution and magnification.
There are three grades of optical and light microscopes: student, benchtop, and research. Student microscopes are the smallest and least expensive type of device. They are capable of advanced techniques and are designed for bright field, dark field, and phase contrast examinations. Benchtop microscopes provide a range of examination techniques, but can perform only a few methods at one time. Research microscopes are large devices that weigh between 30 kg and 50 kg and contain complex optical, mechanical, and electronics systems. These devices include multiple cameras and can perform the widest range of simultaneous examinations. Many research microscopes contain built-in computers that control the cameras and functions such as focus management and image processing.
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Engineering Web: Optical and Light Microscopes
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Microscopy - Wikipedia, the free encyclopedia Optical or light microscopy involves passing visible light transmitted through or reflected from the sample through a single or multiple lenses to |
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Diffraction - Wikipedia, the free encyclopedia A glory is an optical phenomenon produced by light backscattered (a combination of diffraction, reflection and refraction) towards its source by a |
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Howstuffworks "How Light Microscopes Work" How Light Microscopes Work by Craig Freudenrich, Ph.D. Browse the article How Light Microscopes Work |
