| ECLE | Extra-Capsular Lens Extraction |
|---|---|
| CL | capillary lumen; cardiolipin; cell line; centralis lateralis; chemiluminescence; chest and left arm ... |
| cyl | cylinder; cylindrical lens |
| GEMSS | glaucoma-lens ecopia-microspherophakia-stiffness-shortness syndrome |
| ICL | idiopathic CD4 T-cell lymphocytopenia; iris-clip lens; isocitrate lyase |
| BLEC | bovine lens epithelial cell |
|---|---|
| CL | Contact Lens |
| HLE | Human lens epithelial |
| IOL | Intra Ocular Lens |
| LCA | Lens Culinaris |
| achromatic lens | A compound lens made of two or more lens's having different indices of refraction, so correlated as to minimise chromatic aberration. (05 Mar 2000) |
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| achromatic | <microscopy> Literally, colour-free. A lens or prism is said to be achromatic when corrected for two colours. The remaining colour seen in an image formed by such a lens is said to be secondary chromatic aberration. A truly achromatic lens would transmit light without decomposing it spectrally and there would be no colour fringing in the image. A doublet, composed of a positive and negative lens element, can be made achromatic for two colours which much improves the performance for most of the others. (05 Aug 1998) |
|---|---|
| achromatic aplanatic condenser | <microscopy> A well-corrected microscope condenser lens, corrected for chromatic and spherical aberrations and satisfying the sine condition. (05 Aug 1998) |
| achromatic apparatus | The nonstaining asters and spindle fibres in a dividing cell. (05 Mar 2000) |
| achromatic objective | <microscopy> An objective that is corrected chromatic for two colours, and spherically for one, usually in the yellow-green part of the spectrum. (05 Aug 1998) |
| achromatic threshold | Threshold of visual sensation, the minimal light intensity evoking a visual sensation. Synonym: achromatic threshold, minimum light threshold. (05 Mar 2000) |
| achromatic vision | A severe congenital deficiency in colour perception, often associated with nystagmus and reduced visual acuity. Synonym: achromatic vision, monochromasia, monochromasy, monochromatism. Origin: G. A-priv. + chroma, colour, + opsis, vision (05 Mar 2000) |
| acoustic lens | In ultrasonography, a lens used to focus or diverge a sound beam; may be simulated by electronic manipulation of signals. (05 Mar 2000) |
| anterior pole of lens | The central point on the anterior surface of the lens of the eye. Synonym: polus anterior lentis. (05 Mar 2000) |
| anterior surface of lens | The anterior surface of the lens of the eye. Synonym: facies anterior lentis. (05 Mar 2000) |
| aplanatic lens | A lens designed to correct spherical aberration and coma (q.v.). Synonym: periscopic meniscus. (05 Mar 2000) |
| apochromatic lens | A compound lens designed to correct both spherical and chromatic aberrations. (05 Mar 2000) |
| asphenc lens | <physics> A lens made aplanatic by grinding the outer zones to a greater radius than the inner zones. Aplanatic condensers can be made in this way. A simple aspheric lens is widely used as a lamp condenser because of its efficiency in converging light rays to one focal plane. (05 Aug 1998) |
| aspheric lens | A lens with a paraboloidal surface that eliminates spherical aberration. (05 Mar 2000) |
| astigmatic lens | A lens in which one of the surfaces is curved in one meridian and less curved in the opposite meridian; e.g., a teaspoon or a football. Synonym: astigmatic lens. (05 Mar 2000) |
| axis of lens | A line connecting the anterior and posterior poles of the lens of the eye. Synonym: axis lentis. (05 Mar 2000) |
| achromatic lens |
a compound lens system that forms an image free from chromatic aberration
Ãâó: wordnet.princeton.edu/perl/webwn
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|---|---|
| achromatic lens |
(w/o color) A lens consisting of two or more elements, usually made of crown glass and flint glass. This lens has been corrected for chromatic aberration in that it has the same focal length with respect to two selected colors (red and blue) or wavelengths of light. The resultant image is (nearly) free of extraneous colors. It is also corrected for spherical aberration with respect to one color.
Ãâó: www.bi-optic.com/vocab.html
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| achromatic lens |
A refractor lens, made of two or sometimes three separate lenses, which has the effect of bringing most of the viewed colours to a sharp focus, thus reducing chromatic aberration.
Ãâó: www.opticalvision.co.uk/content.asp
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| achromatic lens |
An optical lens designed and coated to correct for the tendency of light to separate into colors when passing through glass, called chromatic aberration.
Ãâó: www.themicroscopesite.com/microscope-glossary.htm
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| achromatic lens |
A lens which removes most of the false color (that is, chromatic aberration) from an image.
Ãâó: www.singularsci.com/Glossary1.htm
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| achromatic lens | a compound lens system that forms an image free from chromatic aberration |
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