Abstract
An optical measurement method for nonimaging radiation concentrators is proposed. A Lambertian light source is placed in the exit aperture of the concentrator. Looking into the concentrator’s entrance aperture from a remote position, one can photograph the transmission patterns. The patterns show the transmission of radiation through the concentrator with the full resolution of the four-dimensional phase space of geometric optics. By matching ray-tracing simulations to the measurement, one can achieve detailed and accurate information about the geometry of the concentrator. This is a remote, noncontact measurement and can be performed in situ for installed concentrators. Additional information regarding small-scale reflector waviness and surface reflectivity can also be obtained from the same measurement with additional analysis.
| Original language | English |
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| Pages (from-to) | 5679-5684 |
| Number of pages | 6 |
| Journal | Applied Optics |
| Volume | 39 |
| Issue number | 31 |
| DOIs | |
| State | Published - 1 Nov 2000 |
| Externally published | Yes |