Academic Journal
Spatial and spectral characterisation of the first and second Stiles–Crawford effects using tuneable liquid-crystal filters.
| Τίτλος: | Spatial and spectral characterisation of the first and second Stiles–Crawford effects using tuneable liquid-crystal filters. |
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| Συγγραφείς: | Lochocki, Benjamin1, Rativa, Diego1, Vohnsen, Brian1 brian.vohnsen@ucd.ie |
| Πηγή: | Journal of Modern Optics. Nov2011, Vol. 58 Issue 19/20, p1817-1825. 9p. 1 Diagram, 8 Graphs. |
| Θεματικοί όροι: | *Lighting, Spatial analysis (Statistics), Spectral sequences (Mathematics), Photoreceptors, Crystal filters, Eye diseases, Biological pigments |
| Περίληψη: | A semi-automated bipartite Maxwellian illumination system was used to examine the Stiles–Crawford effects of the first and second kind for the fovea of the authors’ eyes. The illumination was realised with a tungsten–halogen source in combination with tuneable liquid-crystal spectral filters. Visibility and hueshift dependencies were examined spatially and spectrally. They have been found to be in fair agreement with former studies in terms of overall appearance but with a notable reduction in directionality for the blue spectral range. The observations are discussed in relation to recent theory that relates the Stiles–Crawford effect of the second kind to the Stiles–Crawford effect of the first kind via a pigment-specific colour visibility function. The results confirm a direct relationship between the two effects and a reduction in hueshift for narrowband illumination. Differences in the green spectral range remain, however, that may be a consequence of a different directionality of S-cones as compared to the M- and L-cones. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Items | – Name: Title Label: Title Group: Ti Data: Spatial and spectral characterisation of the first and second Stiles–Crawford effects using tuneable liquid-crystal filters. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Lochocki%2C+Benjamin%22">Lochocki, Benjamin</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Rativa%2C+Diego%22">Rativa, Diego</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Vohnsen%2C+Brian%22">Vohnsen, Brian</searchLink><relatesTo>1</relatesTo><i> brian.vohnsen@ucd.ie</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Modern+Optics%22">Journal of Modern Optics</searchLink>. Nov2011, Vol. 58 Issue 19/20, p1817-1825. 9p. 1 Diagram, 8 Graphs. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Lighting%22">Lighting</searchLink><br /><searchLink fieldCode="DE" term="%22Spatial+analysis+%28Statistics%29%22">Spatial analysis (Statistics)</searchLink><br /><searchLink fieldCode="DE" term="%22Spectral+sequences+%28Mathematics%29%22">Spectral sequences (Mathematics)</searchLink><br /><searchLink fieldCode="DE" term="%22Photoreceptors%22">Photoreceptors</searchLink><br /><searchLink fieldCode="DE" term="%22Crystal+filters%22">Crystal filters</searchLink><br /><searchLink fieldCode="DE" term="%22Eye+diseases%22">Eye diseases</searchLink><br /><searchLink fieldCode="DE" term="%22Biological+pigments%22">Biological pigments</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: A semi-automated bipartite Maxwellian illumination system was used to examine the Stiles–Crawford effects of the first and second kind for the fovea of the authors’ eyes. The illumination was realised with a tungsten–halogen source in combination with tuneable liquid-crystal spectral filters. Visibility and hueshift dependencies were examined spatially and spectrally. They have been found to be in fair agreement with former studies in terms of overall appearance but with a notable reduction in directionality for the blue spectral range. The observations are discussed in relation to recent theory that relates the Stiles–Crawford effect of the second kind to the Stiles–Crawford effect of the first kind via a pigment-specific colour visibility function. The results confirm a direct relationship between the two effects and a reduction in hueshift for narrowband illumination. Differences in the green spectral range remain, however, that may be a consequence of a different directionality of S-cones as compared to the M- and L-cones. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Modern Optics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1080/09500340.2011.566638 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 1817 Subjects: – SubjectFull: Lighting Type: general – SubjectFull: Spatial analysis (Statistics) Type: general – SubjectFull: Spectral sequences (Mathematics) Type: general – SubjectFull: Photoreceptors Type: general – SubjectFull: Crystal filters Type: general – SubjectFull: Eye diseases Type: general – SubjectFull: Biological pigments Type: general Titles: – TitleFull: Spatial and spectral characterisation of the first and second Stiles–Crawford effects using tuneable liquid-crystal filters. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Lochocki, Benjamin – PersonEntity: Name: NameFull: Rativa, Diego – PersonEntity: Name: NameFull: Vohnsen, Brian IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 11 Text: Nov2011 Type: published Y: 2011 Identifiers: – Type: issn-print Value: 09500340 Numbering: – Type: volume Value: 58 – Type: issue Value: 19/20 Titles: – TitleFull: Journal of Modern Optics Type: main |
| ResultId | 1 |