| filar eyepiece |
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| filar | <optics> Of or pertaining to a thread or line; characterised by threads stretched across the field of view; as, a filar microscope; a filar micrometer. Origin: L. Filum a thread. Source: Websters Dictionary (01 Mar 1998) |
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| filar mass | A filamentous plasmatic material, beaded with granules, demonstrable by means of vital staining in the immature red blood cells. Synonym: alpha substance, filar mass, filar substance, substantia reticularis, substantia reticulofilamentosa. Synonym: reticular formation. (05 Mar 2000) |
| filar micrometer | An ocular micrometer with a line moved by a ruled drum such that a movement of the line of 5 um or less may be made in relation to fixed parallel lines. (05 Mar 2000) |
| filar micrometre | <microscopy> An eyepiece equipped with a fiducial line in its focal plane that is movable by means of a calibrated micrometre screw in order to make accurate measurements of length. Synonym: filar eyepiece. (05 Aug 1998) |
| filar micrometre ocular | <microscopy> A micrometre ocular with crossed lines which can be simultaneously focused in and moved across the field by means of a micrometre screw. The amount of displacement can be read in 0.01 steps on the micrometre drum head. This makes a very delicate measuring device, since calibration of the micrometre scale by means of a stage micrometre gives values for each interval on the drum head which are much less than the resolving power of the highest-aperture objectives. (05 Aug 1998) |
| filar substance | A filamentous plasmatic material, beaded with granules, demonstrable by means of vital staining in the immature red blood cells. Synonym: alpha substance, filar mass, filar substance, substantia reticularis, substantia reticulofilamentosa. Synonym: reticular formation. (05 Mar 2000) |
| Ramsden eyepiece | <microscopy> An ocular consisting of two plano-convex lenses with the plane side of the lower lens nearer the objective. The focal plane is outside the system, hence it is of the positive type with the diaphragm below the lenses. While this eyepiece gives a somewhat flatter field than the Huygenian and for this reason has been used in the past for micrometre oculars, the colour correction is poor with the formation of colour fringes around the object. The modern Ramsden eyepiece has an achromatic doublet for the eye lens to correct for colour. (05 Aug 1998) |
| reticle eyepiece | <microscopy> A microscope ocular having at its focal plane a reticle. (05 Aug 1998) |
| periplan eyepiece | <microscopy> A compensating type of eyepiece made by Leitz with a doublet for the eyelens. The field is larger and flatter than the regular compensating ocular, but there is apt to be spherical aberration or distortion present near the periphery of the field. (05 Aug 1998) |
| planoscopic eyepiece | <microscopy> An American Optical Company (Reichert) eyepiece designed to flatten the field of achromatic objectives. (05 Aug 1998) |
| widefield eyepiece | <microscopy> An ocular with an achromatic doublet for the eyelens and with the plane side of the lower lens nearest the objective. Such a corrected system does not have to be stopped down with a diaphragm, hence a large flat field is achieved. A positive achromatic eyepiece, having a large eye lens and a high eye point, intended primarily for use with widefield binocular microscopes. (05 Aug 1998) |
| holoscopic eyepiece | <microscopy> An eyepiece suitable for achromatic, fluorite and apochromatic objectives. The eyelens can be adjusted closer to or further away from the field lens to spherically correct for the various types of objectives. (This adjustment also changes the magnification of the eyepiece.) (05 Aug 1998) |
| Huygenian eyepiece | <microscopy> An under corrected (blue rim at periphery of field) ocular designed by Huygens for the telescope and later adopted for achromatic objectives. This ocular consists of two plano-convex lenses separated by a diaphragm, hence it is of the negative type with the focal plane inside the system. Both plane surfaces face the eye, as distinguished from the Ramsden eyepiece. (05 Aug 1998) |
| hyperplane eyepiece | <microscopy> A special eyepiece made by Bausch & Lomb for flattening the visual field. (05 Aug 1998) |
| negative eyepiece | <microscopy> An eyepiece in which the real image of the object is formed between the lens elements of the eyepiece. (05 Aug 1998) |
제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
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제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
|---|