Color Rendering Index, CRI, is a widely used metric to provide a means of determining light quality using measured
color shift from a reference source. CRI has several known deficiencies however and there is active research in new
metrics. As part of this research, a new tool has been developed to create a wide variety of spectral power distributions,
SPD. The tool is called a Spectrally Tunable Light Source, STLS. We detail objectives and the detailed design of an
STLS system involving thousands of high-power LEDs across the visible spectrum.
A mobile system for space shuttle servicing, the Tessellator, has been configured, designed and is currently being built and integrated. Robot tasks include chemical injection and inspection of the shuttle's thermal protection system. This paper outlines tasks, rationale, and facility requirements for the development of this system. A detailed look at the mobile system and manipulator follow with a look at mechanics, electronics, and software. Salient features of the mobile robot include omnidirectionality, high reach, high stiffness and accuracy with safety and self-reliance integral to all aspects of the design. The robot system is shown to meet task, facility, and NASA requirements in its design resulting in unprecedented specifications for a mobile-manipulation system.
Conference Committee Involvement (7)
Eighth International Conference on Solid State Lighting
11 August 2008 | San Diego, California, United States
Seventh International Conference on Solid State Lighting
27 August 2007 | San Diego, California, United States
Sixth International Conference on Solid State Lighting
14 August 2006 | San Diego, California, United States
Fifth International Conference on Solid State Lighting
1 August 2005 | San Diego, California, United States
Fourth International Conference on Solid State Lighting
3 August 2004 | Denver, Colorado, United States
Third International Conference on Solid State Lighting
5 August 2003 | San Diego, California, United States
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