décentrement vers le bas
English translation: 1 mm below the centre (of the pupil)
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| 17:23 Mar 12, 2007 |
| French to English translations [PRO] Medical - Medical (general) / Optical | |||||||
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|  Selected response from: Drmanu49 France Local time: 10:10 | ||||||
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| 4 +1 | 1 mm below the centre of the pupil per 2 degrees of frame inclination |
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| 3 +1 | decentering downwards/decentration downwards |
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| 3 | downwards offset ?? |
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| 3 | not for points |
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| Discussion entries: 1 | |
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Answers
39 mins confidence: 
downwards offset ?? Explanation: Not that I understand the physics of it all. |
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40 mins confidence: peer agreement (net): +1
peer agreement (net): +1decentering downwards/decentration downwards Explanation: Well, it took a while to work this one out, so please excuse all the refs, but I think they are relevant: Le tableau ci-dessous indique le décentrement d nécessaire pour que l'aberration chromatique latérale ait une influence manifeste sur le confort visuel. Exemples (DL = - 5.00 D) Minéral Nombre d'Abbe Décentrement maximum Organique Nombre d'Abbe Décentrement maximum 1.523 Stigmal 15 Essilor 59 11.8 mm 1.498 Clarlet 15 Zeiss 58 11.6 mm 1.6 Stigmal 16 Essilor 42 8.4 mm 1.6 Eyas Hoya 42 8.4 mm 1.7 Fit 40 Essilor 40 8.0 mm 1.59 Airwear Essilor 32 6.4 mm 1.8 Rodalent 18 Rodenstock 34.4 6.9 mm 1.67 Clarlet 1.67 AS Zeiss 32 6.4 mm Nous noterons, dans les exemples ci-dessus, que ce décentrement d est pratiquement deux fois moindre pour le polycarbonate par rapport au CR39. Si nous effectuons ce même calcul pour une vergence de -1 .00 D, nous obtenons 59 mm de décentrement pour le crown d'indice 1.523. Solid-state image pickup device having microlenses each with ... The optical axis of the microlens is displaced toward the optical axis of the image taking lens system in relation to the center axis of the pixel opening ... www.freepatentsonline.com/5610390.html - 31k - Cached - Similar pages Locating the center of the entrance pupil of an eye after pupil ... Related Patents:, View patents that cite this patent ... 264, optical axis 18 is coincident with the center of the entrance pupil of the eye which is the ... www.freepatentsonline.com/5740803.html - 36k - Cached - Similar pages [PDF] Simultaneous stereoscopic fundus camera incorporating a single ... File Format: PDF/Adobe Acrobat this has resulted because the optical axis of each image is not the same as that of ... 4 mm PUPIL. 6 0 mm. CENTROID TO CENTROID. 4.76 mm. CENTER TO CENTER ... www.iovs.org/cgi/reprint/19/3/289.pdf - Similar pages Age-Related Changes in Monochromatic Wave Aberrations of the Human Eye The center of the subject's pupil was aligned to the optical axis of the ... Figure 2 a shows the relation between age and overall RMS wavefront error, ... www.iovs.org/cgi/content/full/42/6/1390 - Similar pages Optometry and Vision Science - Fulltext: Volume 79(5) May 2002 p ... In the literature, it is assumed that the pupil is decentered to the nasal side by 0.25 mm from the optical axis. 1 In this case, to center the Purkinje ... www.optvissci.com/pt/re/ovs/fulltext.00006324-200205000-000... [PDF] Simultaneous linear estimation of multiple view geometry and lens ... File Format: PDF/Adobe Acrobat - View as HTML Decentering distortion of lenses. Photogram-. metric Engineering, 32(3):444–462, 1966. [3] F. Devernay and O. D. Faugeras. Automatic calibration ... www.robots.ox.ac.uk/~vgg/publications/papers/fitzgibbon01b.... - Similar pages ATC: Envy - 3 Piece Set - Tifosi - Eyewear - Accessories The lenses flex versus shattering upon impact. Optics are further enhanced by the "decentering" which eliminates any false optical alteration (magnification ... www.allterraincycles.co.uk/product.php?pid=8143 - 31k - Cached - Similar pages [PDF] Contact lens correction for presbyopia File Format: PDF/Adobe Acrobat - View as HTML decentering a hyperbolic surface on the. induced cylinder and sphere. ... Poor centration. (lens optical centre. >1mm from pupil. centre) and high ... www.optometry.co.uk/files/a8d6846f8463d081f3a96fd1a86904e4_... - Similar pages [PDF] Clinical results with three different kinds of small optic PMMA-IOLs File Format: PDF/Adobe Acrobat Decentration (0.5-1 mm). 9 (20%). 4 (16%) 3 (30%). Decentration (1-1.5 mm) ... Horizontal decentration. 2 (4.4%) 0. 1 (10%). Decentration downwards ... www.springerlink.com/index/R043T720KXJ712U7.pdf - Similar pages When a spectacle lens is tilted about a horizontal axis in front of the eye, by the value of the pantoscopic angle, the optical centre of the lens needs to be decentred downwards, in order to compensate for the tilt, allowing the optical axis of the lens to pass through the eye’s centre of rotation. It goes without saying, that if we decentre a lens horizontally, for example, to ensure that there is no horizontal prismatic effect |
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51 mins confidence:
not for points Explanation: these websites might provide a few clues http://www.bristow-optical.com/Products/Designs/Varilux Lens... http://www.essilor.com.sg/Professional/Workshop/fitting/vari... |
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Notes to answerer
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4 hrs confidence: peer agreement (net): +1
peer agreement (net): +11 mm below the centre of the pupil per 2 degrees of frame inclination Explanation: You are right, keep it simple. |
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