Optical instrument

An illustration of some of the optical devices available for laboratory work in England in 1858.

An optical instrument is a device that processes light waves (or photons), either to enhance an image for viewing or to analyze and determine their characteristic properties. Common examples include periscopes, microscopes, telescopes, and cameras.[1][2]

Image enhancement

Further information: Viewing instrument

The first optical instruments were telescopes used for magnification of distant images, and microscopes used for magnifying very tiny images. Since the days of Galileo and Van Leeuwenhoek, these instruments have been greatly improved and extended into other portions of the electromagnetic spectrum. The binocular device is a generally compact instrument for both eyes designed for mobile use. A camera could be considered a type of optical instrument, with the pinhole camera and camera obscura being very simple examples of such devices.

Analysis

Another class of optical instrument is used to analyze the properties of light or optical materials. They include:

DNA sequencers can be considered optical instruments, as they analyse the color and intensity of the light emitted by a fluorochrome attached to a specific nucleotide of a DNA strand.

Surface plasmon resonance-based instruments use refractometry to measure and analyze biomolecular interactions.

Other types

See also

References

  1. ^ Hernández, Daniel Malacara (2017-11-22). Fundamentals and Basic Optical Instruments. CRC Press. ISBN 978-1-4987-2077-9.
  2. ^ Kenyon, I. R. (2008). The Light Fantastic: A Modern Introduction to Classical and Quantum Optics. Oxford University Press. ISBN 978-0-19-856645-8.

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