1. Radiometry
ECE532 Biomedical Optics
©
1998
Steven L. Jacques, Scott A. Prahl
Oregon Graduate Institute
LECTURE:
Radiant Power
Experiment:
light bulb immersed in black water
Experiment:
laser aimed into black water
Radiant Intensity
Example:
radiant intensity of a flashlight
Irradiance
Example:
irradiance of a flashlight beam on a wall
Fluence rate
Radiant Exittance
Radiance
Example:
radiance of a flashlight
Collection of light
Apertures
Simple aperture to collect collimated laser beam
Simple aperture to collect restricted solid angle of light
Aperture of an integrating sphere
Optical fiber
Isotropic collector
Detection of light
Eye safety
LAB:
Calibrating a light source by heating a black object
Simulated eye
Goniometry (measuring angular patterns of intensity)
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