USE OF INTERFERENCE PASSBAND FILTERS WITH WIDE-ANGLE LENSES FOR MULTISPECTRAL PHOTOGRAPH
| dc.contributor.author | McKenney, D. B. | |
| dc.contributor.author | Slater, P. N. | |
| dc.date.accessioned | 2016-12-14T18:04:50Z | |
| dc.date.available | 2016-12-14T18:04:50Z | |
| dc.date.issued | 1969-06-10 | |
| dc.identifier.uri | http://hdl.handle.net/10150/621634 | |
| dc.description | QC 351 A7 no. 40 | en |
| dc.description.abstract | The aim of this study was to determine to what extent a constant spectral response can be obtained for wide-passband interference filters used with wide -angle lenses. We investigated the possibility of using the curvature of the lens surfaces to reduce the shift in the filter passband for large field angles and found that locating the filter on the proper surface will considerably reduce the shift of the passband. Specifically, we determined the distribution of angles of incidence for full aperture pencils incident at several field angles on the second and fourth surfaces of the 90° Geocon IV, the 90° Paxar, and the 125° Pleogon. We then calculated the spectral transmittance of each lens when a wide passband interference filter was located on its second or fourth surface. We also calculated the degree of polarization introduced. From the cases considered, we found that the tracing of an upper and lower marginal (rim) ray at maximum field angle is sufficient to determine the suitability of a surface, the criterion being that, the smaller the angle of incidence at the surface, the better. In addition, we found that, with the filter on the second surface of the Paxar, spectral transmittance changes with field angle were negligible and the modulation due to polarization was about 1 %. | |
| dc.language.iso | en_US | en |
| dc.publisher | Optical Sciences Center, University of Arizona (Tucson, Arizona) | en |
| dc.relation.ispartofseries | Optical Sciences Technical Report 40 | en |
| dc.rights | Copyright © Arizona Board of Regents | |
| dc.subject | Optics. | en |
| dc.subject | Interference filters | en |
| dc.subject | Multispectral photography | en |
| dc.subject | Polarization | en |
| dc.subject | Ray tracing | en |
| dc.subject | Wide-angle lenses | en |
| dc.title | USE OF INTERFERENCE PASSBAND FILTERS WITH WIDE-ANGLE LENSES FOR MULTISPECTRAL PHOTOGRAPH | en_US |
| dc.type | Technical Report | en |
| dc.description.collectioninformation | This title from the Optical Sciences Technical Reports collection is made available by the College of Optical Sciences and the University Libraries, The University of Arizona. If you have questions about titles in this collection, please contact repository@u.library.arizona.edu. | |
| refterms.dateFOA | 2018-06-14T10:39:47Z | |
| html.description.abstract | The aim of this study was to determine to what extent a constant spectral response can be obtained for wide-passband interference filters used with wide -angle lenses. We investigated the possibility of using the curvature of the lens surfaces to reduce the shift in the filter passband for large field angles and found that locating the filter on the proper surface will considerably reduce the shift of the passband. Specifically, we determined the distribution of angles of incidence for full aperture pencils incident at several field angles on the second and fourth surfaces of the 90° Geocon IV, the 90° Paxar, and the 125° Pleogon. We then calculated the spectral transmittance of each lens when a wide passband interference filter was located on its second or fourth surface. We also calculated the degree of polarization introduced. From the cases considered, we found that the tracing of an upper and lower marginal (rim) ray at maximum field angle is sufficient to determine the suitability of a surface, the criterion being that, the smaller the angle of incidence at the surface, the better. In addition, we found that, with the filter on the second surface of the Paxar, spectral transmittance changes with field angle were negligible and the modulation due to polarization was about 1 %. |
