Lau fringes and subjective refraction
Avudainayagam, Chitralekha S., Avudainayagam, Kodikullam V., & Atchison, David A. (2002) Lau fringes and subjective refraction. Optics Letters, 27(7), pp. 476-478.
Abstract
Lau fringes formed in the far field of a pair of gratings illuminated by spatially incoherent light are known to disappear when one grating is rotated slightly 63± with respect to the other. We observed that a cylindrical lens that was appropriately rotated could restore the high-contrast Lau fringes by bringing together the rays that are coherent with respect to each other. We have developed a new refractometer based on this phenomenon, the details of which are presented. Measurement of the cylinder power and axis of the human eye is possible with good accuracy and repeatability with this instrument.
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| ID Code: | 5469 |
|---|---|
| Item Type: | Journal Article |
| Additional Information: | For more information, please refer to the journal's website (see link) or contact the author. Author contact details: d.atchison@qut.edu.au |
| Additional URLs: | |
| ISSN: | 1539-4794 |
| Subjects: | Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300) |
| Divisions: | Current > QUT Faculties and Divisions > Faculty of Health Current > Institutes > Institute of Health and Biomedical Innovation |
| Copyright Owner: | Copyright 2002 Optical Society of America |
| Deposited On: | 20 Nov 2006 |
| Last Modified: | 15 Jan 2009 17:15 |
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