Optica actaPub Date : 1970-09-01DOI: 10.1080/713818355
G Westheimer
{"title":"Image quality in the human eye.","authors":"G Westheimer","doi":"10.1080/713818355","DOIUrl":"https://doi.org/10.1080/713818355","url":null,"abstract":"A description is given of the components of the human eye as an image-forming system, and of a model eye based on Gaussian optics. The actual performance of the eye's optics is discussed with respect to chromatic aberration, absorption losses, scatter and the in vivomeasurement of the modulation transfer function. Physiological aspects of the eye's visual performance are described, including pupil size, and the influence of various factors on visual acuity.","PeriodicalId":78927,"journal":{"name":"Optica acta","volume":"17 9","pages":"641-58"},"PeriodicalIF":0.0,"publicationDate":"1970-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/713818355","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"16564835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optica actaPub Date : 1970-05-01DOI: 10.1080/713818315
R Barakat
{"title":"Partially coherent imagery in the presence of aberrations.","authors":"R Barakat","doi":"10.1080/713818315","DOIUrl":"https://doi.org/10.1080/713818315","url":null,"abstract":"","PeriodicalId":78927,"journal":{"name":"Optica acta","volume":"17 5","pages":"337-47"},"PeriodicalIF":0.0,"publicationDate":"1970-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/713818315","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"16528817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optica actaPub Date : 1969-07-01DOI: 10.1080/713818191
A Van der Lugt, R H Mitchel
{"title":"Signature recognition for nuclear detonations.","authors":"A Van der Lugt, R H Mitchel","doi":"10.1080/713818191","DOIUrl":"https://doi.org/10.1080/713818191","url":null,"abstract":"Experiments have been performed on the recognition of nuclear detections by using coherent optical data-processing systems. The data, E-field signals recorded with a 10 khz bandwidth, were available from only ten events, all airdrops. Since the signals were of an unknown form, they were classified into sub-groups by using a cross-correlation technique. Spatial carrier-frequency filters, constructed for these signals, were then tested to determine their ability to recognize all ten signals while rejecting noise from atmospheric sources. The experiments, although of a preliminary nature, show that all the test signals can be recognized with a two-channel filter and that the nearest noise peak (from six samples) is 6–8 db less than the minimum correlation peak from any of the ten signals.","PeriodicalId":78927,"journal":{"name":"Optica acta","volume":"16 4","pages":"453-61"},"PeriodicalIF":0.0,"publicationDate":"1969-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/713818191","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"16884036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optica actaPub Date : 1969-05-01DOI: 10.1080/713818188
K H Ruddock
{"title":"Cone vision under small field conditions.","authors":"K H Ruddock","doi":"10.1080/713818188","DOIUrl":"https://doi.org/10.1080/713818188","url":null,"abstract":"The paper is concerned with the effect of field size upon the appearance of a monochromatic visual stimulus. Data were obtained by establishing equality of apparent brightness and wavelength between a 40′ × 80′ field covered with a 2¾′ grating, and a similar field without a grating.","PeriodicalId":78927,"journal":{"name":"Optica acta","volume":"16 3","pages":"391-8"},"PeriodicalIF":0.0,"publicationDate":"1969-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/713818188","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"16880109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optica actaPub Date : 1969-03-01DOI: 10.1080/713818162
J D Rattle
{"title":"Effect of target size on monocular fixation.","authors":"J D Rattle","doi":"10.1080/713818162","DOIUrl":"https://doi.org/10.1080/713818162","url":null,"abstract":"The method used by Boyce [1] has been used to examine the accuracy of fixation of the centre of a disc target as a function of the angle subtended by the disc at the eye. Angular diameters from 19′–240′ were used. The R.M.S. deviation of the direction of the visual axis from its mean direction increases by less than a factor of two between the extreme sizes of the target. There is an unexplained reduction in accuracy of fixation when the diameter of the target is about equal to the diameter of the fovea. Experiments have also been carried out on the accuracy of fixation of the centre of two small dots separated either vertically or horizontally at function of distance between the dots. The accuracy of fixation for these targets is unexpectedly good.","PeriodicalId":78927,"journal":{"name":"Optica acta","volume":"16 2","pages":"183-90"},"PeriodicalIF":0.0,"publicationDate":"1969-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/713818162","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"16870685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optica actaPub Date : 1969-03-01DOI: 10.1080/713818173
D S Gilbert, D H Fender
{"title":"Contrast thresholds measured with stabilized and nonstabilized sine-wave graftings.","authors":"D S Gilbert, D H Fender","doi":"10.1080/713818173","DOIUrl":"https://doi.org/10.1080/713818173","url":null,"abstract":"","PeriodicalId":78927,"journal":{"name":"Optica acta","volume":"16 2","pages":"191-204"},"PeriodicalIF":0.0,"publicationDate":"1969-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/713818173","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"16870684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optica actaPub Date : 1969-01-01DOI: 10.1080/713818143
J M Findlay
{"title":"The magnitude of translational head movements.","authors":"J M Findlay","doi":"10.1080/713818143","DOIUrl":"https://doi.org/10.1080/713818143","url":null,"abstract":"Results are presented from an experiment to measure the magnitude of translational head movements during steady fixation when the head was supported in various ways. The significance of the results for eye movement recording is discussed.","PeriodicalId":78927,"journal":{"name":"Optica acta","volume":"16 1","pages":"65-8"},"PeriodicalIF":0.0,"publicationDate":"1969-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/713818143","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"16851696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optica actaPub Date : 1968-11-01DOI: 10.1080/713818126
J D Rattle, J A Foley-Fisher
{"title":"A relationship between vernier acuity and intersaccadic interval.","authors":"J D Rattle, J A Foley-Fisher","doi":"10.1080/713818126","DOIUrl":"https://doi.org/10.1080/713818126","url":null,"abstract":"Measurements of vernier acuity V and intersaccadic interval (T is) on a number of subjects are consistent with the relation V 2= A(T is + B), where A and B are constants. This suggests that an integration period determined by the length of the intersaccadic interval is significant in vernier acuity performance.","PeriodicalId":78927,"journal":{"name":"Optica acta","volume":"15 6","pages":"617-20"},"PeriodicalIF":0.0,"publicationDate":"1968-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/713818126","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"16783415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Optica actaPub Date : 1968-11-01DOI: 10.1080/713818130
D H Foster
{"title":"The perception of moving, spatially periodic, intensity distributions.","authors":"D H Foster","doi":"10.1080/713818130","DOIUrl":"https://doi.org/10.1080/713818130","url":null,"abstract":"This article may be used for research, teaching and private study purposes. Any substantial or systematic reproduction, redistribution , reselling , loan, sub-licensing, systematic supply or distribution in any form to anyone is expressly forbidden. The publisher does not give any warranty express or implied or make any representation that the contents will be complete or accurate or up to date. The accuracy of any instructions, formulae and drug doses should be independently verified with primary sources. The publisher shall not be liable for any loss, actions, claims, proceedings, demand or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with or arising out of the use of this material.","PeriodicalId":78927,"journal":{"name":"Optica acta","volume":"15 6","pages":"625-6"},"PeriodicalIF":0.0,"publicationDate":"1968-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/713818130","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"16783414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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