AffiliationUniv Arizona, Coll Opt Sci
MetadataShow full item record
PublisherSPIE-INT SOC OPTICAL ENGINEERING
CitationMilster, T. D., & Kuhn, W. P. (2020, August). Practical measurement of cell-phone camera lens focal length. In Optical System Alignment, Tolerancing, and Verification XIII (Vol. 11488, p. 1148807). International Society for Optics and Photonics.
Rights© 2020 SPIE
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at firstname.lastname@example.org.
AbstractA practical instrumentation configuration for measuring focal length of cell-phone camera lenses is presented that uses a custom autocollimator, a grating, an autostigmatic microscope, and a precision stage. Uncertainty in LED wavelength is reduced by using a white LED and a set of narrow-band filters. The autocollimator is designed to allow for rapid focus adjustment at each test wavelength. Examples of the measurement technique and an error analysis are provided.
VersionFinal published version