Du är här

Visualization of chromatic correction of fish lenses by multiple focal lengths

Författare:
Publiceringsår: 2005
Språk: Engelska
Sidor: 691-700
Publikation/Tidskrift/Serie: Journal of Optics A-Pure and Applied Optics
Volym: 7
Nummer: 11
Dokumenttyp: Artikel
Förlag: IOP Publishing

Sammanfattning

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.

Disputation

Nyckelord

  • Biology and Life Sciences
  • crystalline lens
  • physiological optics
  • fish
  • schlieren photography
  • photorefractometry
  • laser scanning

Övrigt

  • VR
Published
Yes
  • Lund Vision Group
  • ISSN: 1464-4258

Box 117, 221 00 LUND
Telefon 046-222 00 00 (växel)
Telefax 046-222 47 20
lu [at] lu [dot] se

Fakturaadress: Box 188, 221 00 LUND
Organisationsnummer: 202100-3211
Om webbplatsen

LERU logo U21 logo