Visualization of chromatic correction of fish lenses by multiple focal lengths
Author
Summary, in English
Many fish and some terrestrial animals have multifocal lenses that compensate for chromatic aberration by a mechanism unique to biological optical systems. We describe four optical methods for the study of such lenses. Significantly improved methods (focal-area imaging, schlieren photography, and laser scanning) are explained in full detail. One method (photorefractometry) was only slightly modified over earlier versions and is illustrated in brief. Portable equipment is available for photorefractometry, schlieren photography, and laser scanning. With our methods we could for the first time directly illustrate chromatic correction by multifocal lenses and detect a number of previously unknown optical features of fish lenses.
Publishing year
2005
Language
English
Pages
691-700
Publication/Series
Journal of Optics. A, Pure and Applied Optics
Volume
7
Issue
11
Document type
Journal article
Publisher
IOP Publishing
Topic
- Zoology
Keywords
- crystalline lens
- physiological optics
- fish
- schlieren photography
- photorefractometry
- laser scanning
Status
Published
Research group
- Lund Vision Group
ISBN/ISSN/Other
- ISSN: 1741-3567