OPTI 40006/07 OPTI 400 - Radiometry, Sources and Detectors - Fall, 2007. Radiometric concepts, symbols, units and nomenclature such as projected area and solid angle, generation and propagation of blackbody and other radiation, absorption, reflection, transmission and scattering, and radiometric laws such as geometrical radiation transfer, blackbody radiation, inverse square and cosine laws. Application of these concepts to radiation from optical radiation sources in the laboratory and nature, measurement of this radiation using imaging and non-imaging systems, and detector concepts such as detectors themselves, noise, and figures of merit. Radiometric instruments, measurements, and calibration.
Prerequisites - Opti 201R, 201L, 360 or equivalent, 380B.
Instructor: Kurt Thome Email: kthome@email.arizona.edu Office: On campus - Meinel Room 414 Phone: 621-4535 Fax: 621-8292 Office Hours: Tuesday 2:00 - 4:00 pm Wed. 9:30-11:30 am Other times available by appointment
Grading Policies: Homework accounts for 20% of the final grade. Two midterm exams worth 25% are given. A comprehensive final exam weighted towards the latter third of the class is given on the assigned date and time for the class and is worth 30%. Homework is due at the start of class on the due date for that assignment. Email copies of the homework are not accepted. Late homework receives a 20% deduction if turned in prior to solutions being given out in class (typically the next class period), and a 40% deduction if turned in after solutions are given.
Text and references - There is no assigned text for the class Texts on reserve - Optical Radiation Measurements - Radiometry, Grum and Becherer Radiometry and the Optical Detection of Radiation – Boyd
Class web site: The class web site will be used for posting homework assignments and for access to the course notes. The web site is located at http://www.optics.arizona.edu/kurt/opti-400/opti-400.php The site is password protected and the password can be obtained in class.
Course Outline (75 min. lectures) This listing is approximate and the order and topics may change slightly. Each numbered topic is approximately a single lecture.
Propagation of Radiation 1. Class introduction, overview of energy collection, basic and simple radiometer, system speed and FOV 2. Radiometric & photometric terminology, units, symbols, definitions 3. Inverse square and cosine laws, example calculations 4. E, I, M, reflectance, transmittance, absorptance, emissivity 5. Areas and solid angles 6. Projected solid angles, projected areas 7. Radiance, etendue and throughput 8. Invariance of throughput and radiance; Lagrange invariant, radiative transfer, radiant flux 9. Lambert’s law; isotropic vs. lambertian; M vs. L, 10. Basic and simple radiometer examples 11. Test 1 Detectors and Sources 12. Planck’s Law 13. Blackbody sources, incandescent sources, natural and luminescent sources of radiation 14. Directional reflectance, simplifications, assumptions 15. The atmosphere and its effect on radiation 16. Radiometric systems, demonstration of radiometric systems, camera equation 17. Basic detection mechanisms and detector types, thermal and photoemissive detector 18. Noise, figures of merit 19. Detector electronics, detector interfacing. Basic electronics; photodiodes and op-amps 20. Spectral selection terms; spectral selection methods 21. Examples of detector calculations, view & form factors 22. Test 2 Radiometric systems 23. Imaging detectors - general characteristics 24. Eye and vision, photographic film, Imaging sensor examples 25. Analog-to-digital conversion, radiometric resolution 26. Radiometric calibration, relative radiometric calibration 27. Absolute radiometric calibration 28. Radiometric measurements, photometry, temperature 29. Color, measurement of material properties 30. Final exam
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