| MORD | magnetic optical rotatory dispersion |
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| OCR | oculocardiac reflex; oculocerebrorenal [syndrome]; optical character recognition |
| OD | Doctor of Optometry; obtained absorbance; occipital dysplasia; occupational dermatitis; occupational... |
| ODU | optical density unit |
| OES | oral esophageal stethoscope; optical emission spectroscopy |
| optical microscope | <instrument, microscopy> A very ambiguous term since all microscopes involve optics, better to specify light, acoustic, X-ray or electron microscope, etc. (05 Aug 1998) |
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| optical noise | <microscopy> Image defects that become especially conspicuous when the image is enhanced. In video microscopy, includes hot spots, mottle, uneven illumination, etc. (05 Aug 1998) |
| optical pachymeter | A lens and/or mirror used to measure corneal thickness. (05 Mar 2000) |
| optical righting reflexes | Visual stimuli that enable an animal to maintain the correct position of the head in space, by bringing about movements of the muscles of the neck and limbs. (05 Mar 2000) |
| optical rotatory dispersion | The method of measuring the dispersion of an optically active molecule to determine the relative magnitude of right- or left-handed components and sometimes structural features of the molecule. (12 Dec 1998) |
| optical scrambler | <microscopy> An optical device for scrambling the image of a non-uniform light source so that it now fills the condenser aperture uniformly without appreciable loss of total luminous flux through the microscope. The scrambler can be a simple loop of a single optical fibre with its ends appropriately polished (05 Aug 1998) |
| optical sectioning | <microscopy> The use of high numerical aperture objective and condenser lenses on a microscope to achieve a shallow depth of field. With a very shallow depth of field, objects above and below focus contribute little to the in-focus image, so that a clean optical section is obtained. See: depth of field. (05 Aug 1998) |
| optical staining | <microscopy> Producing colour in the microscopical image so as to differentiate one part of the object from another. One way is by use of Rheinberg filters. Another is to use polarized light on an anisotropic specimen. Another important method is by dispersion staining. (05 Aug 1998) |
| optical storage devices | A computer disk read by a laser beam, containing data prerecorded by a vendor. The buyer cannot enter or modify data in any way but the advantages lie in the speed of accessibility, relative immunity to damage, and relatively low cost of purchase. (12 Dec 1998) |
| optical transfer function | <microscopy> The relationship between the image produced by an optical instrument and the amplitude and phase of a periodic specimen, measured at various spatial frequencies. The optical transfer function curve, which shows how well contrast is maintained for finer specimen details, is a complex function, of which the real term gives the ratio of amplitudes, and the imaginary term the phase relationships. When the brightness of the periodic specimen varies as a sine wave, the modulus or absolute value of the optical transfer function becomes the modulation transfer function, when the brightness varies as a square wave, the modulation transfer function is known as a contrast transfer function. Acronym: OTF (26 Mar 1998) |
| optical tubelength | <microscopy> The distance from the second principal focal plane of the objective to the front focal plane of the ocular. This distance is about 180 mm for high-power objectives, less for those of low power. (05 Aug 1998) |
| optically | By optics or sight; with reference to optics. <chemistry> Optically active, Optically inactive, terms used of certain metameric substances which, while identical with each other in other respects, differ in this, viz, that they do or do not produce right-handed or left-handed circular polarization of light. Optically positive, Optically negative. See Refraction. Source: Websters Dictionary (01 Mar 1998) |
| optically active | <chemistry> A material which can rotate plane-polarized light. (09 Jan 1998) |
| optical aberration |
Aberration in optical systems (lenses, prisms, mirrors or series of them intended to produce a sharp image) generally leads to blurring of the image. It occurs when light from one point of an object after transmission through the system arrives in different points. Instrument-makers need to correct optical systems to compensate for aberration. The articles reflection, refraction and caustic discuss the general features of reflected and refracted rays. ...
출처: en.wikipedia.org/wiki/Optical_aberration
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| optical coherence tomography |
Optical coherence tomography (OCT) is an interferometric non-invasive imaging technique offering up to multiple millimeter penetration with multiple to sub micrometer axial and lateral resolution. The technique was first demonstrated in 1991 with ~30
출처: en.wikipedia.org/wiki/Optical_coherence_tomography
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| optically active |
capable of rotating the plane of polarization of a light wave.
출처: www.merckmedicus.com/pp/us/hcp/thcp_dorlands_conte...
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| optical coherence tomography |
An in vivo imaging technique that sends out femtosecond infrared pulses and uses optical interference to sense reflections from tissue inhomogeneities.
출처: www.nature.com/focus/cellbioimaging/glossary/
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| optical tweezers |
A laser-based technique that utilizes minute forces exerted by light waves to measure and to manipulate biomolecules.
출처: www.genpromag.com/Glossary~LETTER~O.html
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| optical | clear homogeneous glass of known refractive index |
|---|---|
| optical | an optical phenomenon that results in a false or deceptive visual impression |
| optical | an instrument designed to aid vision |
| optical | a lens that focuses the image in a camera |
| optical | (Light Amplification by Stimulated Emission of Radiation) optical device that produces an intense monochromatic beam of coherent light |
| optical | opacity to light |
| optical | a physical phenomenon related to or involving light |
| optical | optical device having a triangular shape and made of glass or quartz |
| optical | a pyrometer that uses the color of the light emitted by a hot object |
| optical | an astronomical telescope designed to collect and record light from cosmic sources |
| optical | in an optical manner |