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Simple and Accurate Propagation-Angle Observation of a Collimated Laser Beam within a Short Optical Path Range by Use of a Dual-Focus Fresnel Lens.
- Source :
-
Optical Review . May/Jun2005, Vol. 12 Issue 3, p260-263. 4p. 2 Black and White Photographs, 3 Diagrams, 1 Chart, 2 Graphs. - Publication Year :
- 2005
-
Abstract
- We propose a method for observing the propagation-angle displacement of a collimated beam with respect to the travel direction of a moving part by use of a dual-focus Fresnel lens. The fabricated binary-type dual focus Fresnel lens consisting of two portions having a different focal length from each other. 0.5 mrad angular accuracy within a travel range of 16 mm was experimentally confirmed and then it was successfully applied to split-type optical head manufacturing. [ABSTRACT FROM AUTHOR]
- Subjects :
- *COLLIMATORS
*OPTICAL instruments
*FRESNEL lenses
*LENSES
*OPTICS
Subjects
Details
- Language :
- English
- ISSN :
- 13406000
- Volume :
- 12
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Optical Review
- Publication Type :
- Academic Journal
- Accession number :
- 18033362
- Full Text :
- https://doi.org/10.1007/s10043-005-0260-2