Measuring photometric and spectral radiometric bi-directional transmission and reflection in a video-goniospectrometer
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2008.
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | eng |
| Published: |
Massachusetts Institute of Technology
2009
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/1721.1/44859 |
| _version_ | 1826195437267189760 |
|---|---|
| author | Stokes, Eleanor (Eleanor Catherine) |
| author2 | Marilyne Andersen. |
| author_facet | Marilyne Andersen. Stokes, Eleanor (Eleanor Catherine) |
| author_sort | Stokes, Eleanor (Eleanor Catherine) |
| collection | MIT |
| description | Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2008. |
| first_indexed | 2024-09-23T10:12:36Z |
| format | Thesis |
| id | mit-1721.1/44859 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T10:12:36Z |
| publishDate | 2009 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/448592019-04-11T01:14:59Z Measuring photometric and spectral radiometric bi-directional transmission and reflection in a video-goniospectrometer Stokes, Eleanor (Eleanor Catherine) Marilyne Andersen. Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Mechanical Engineering. Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2008. Includes bibliographical references (p. 175-185). The effective use of complex fenestration systems (CFS) in buildings requires a detailed knowledge of their optical spectral and directional properties. Bidirectional scattering functions (BSDFs), either in transmission (BTDFs) or reflection (BRDFs), are used to assess these properties and gather information vital to CFS design and analysis. To enable this analysis in a time and budget conscious manner, an innovative video goniospectrometer, called the Heliodome, has been developed. The Heliodome relies on filtered digital imaging, mathematical methods, and the use of a unique semi-transparent hemispheroidal light collection system to investigate the spectral and angular selectivity of CFS across the visible and near infrared portions of the solar spectrum. This thesis seeks to describe the most recent advancements in the development of the Heliodome-the completion and characterization of the spheroidal mirror component, the integration of a spectral estimation method, the photometric calibration of the camera, and the final automation and validation-- enabling the measurement of both spectral radiometric BSDFs and photometric BSDFs. The completion of this research should support the advancement of CFS that improve the use of daylighting in a space, reducing energy consumption and managing solar gains while improving visual comfort in buildings. by Eleanor Stokes. S.M. 2009-03-16T19:52:19Z 2009-03-16T19:52:19Z 2008 2008 Thesis http://hdl.handle.net/1721.1/44859 301745480 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 185 p. application/pdf Massachusetts Institute of Technology |
| spellingShingle | Mechanical Engineering. Stokes, Eleanor (Eleanor Catherine) Measuring photometric and spectral radiometric bi-directional transmission and reflection in a video-goniospectrometer |
| title | Measuring photometric and spectral radiometric bi-directional transmission and reflection in a video-goniospectrometer |
| title_full | Measuring photometric and spectral radiometric bi-directional transmission and reflection in a video-goniospectrometer |
| title_fullStr | Measuring photometric and spectral radiometric bi-directional transmission and reflection in a video-goniospectrometer |
| title_full_unstemmed | Measuring photometric and spectral radiometric bi-directional transmission and reflection in a video-goniospectrometer |
| title_short | Measuring photometric and spectral radiometric bi-directional transmission and reflection in a video-goniospectrometer |
| title_sort | measuring photometric and spectral radiometric bi directional transmission and reflection in a video goniospectrometer |
| topic | Mechanical Engineering. |
| url | http://hdl.handle.net/1721.1/44859 |
| work_keys_str_mv | AT stokeseleanoreleanorcatherine measuringphotometricandspectralradiometricbidirectionaltransmissionandreflectioninavideogoniospectrometer |