Evaluation of a mechanical beam-switching system
Abstract
An evaluation was conducted of a mechanical beam switching system that may be appropriate for use with high-intensity discharge (HID) lamps. Subjects rated the adequacy of the beam change time at several rates, compared with an electrical beam changing system. The results indicate that subjects rated the mechanical and electrical systems the same, at the shortest change time for the former. Longer change times elicited poorer ratings for the mechanical system. The change from low to high beam was rated better than the change from high to low beam in the mechanical system. This difference was statistically significant at the two slower rates investigated.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- December 1991
- Bibcode:
- 1991STIN...9223140O
- Keywords:
-
- Beam Switching;
- Evaluation;
- Luminaires;
- Mechanical Devices;
- Motor Vehicles;
- Automobiles;
- Electric Switches;
- Performance Tests;
- Shutters;
- Electronics and Electrical Engineering