This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Mechanically Dimmable Mirrors
Technical Paper
2006-01-0946
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Over the years, there have been different ways to reduce glare from mirrors for drivers - dimmable electrochromic mirrors being the latest option. These mirrors often have a limited lifespan when exposed to the environment, and are often costly to replace.
It is now feasible to have a rear-view mirror assembly whose reflectance is mechanically adjustable. This is accomplished by using polarized light and a pair of specially constructed polarizers. These polarizers attenuate light by sliding past one another in a linear fashion, as opposed to rotating with respect to one another to cross their transmission axes. This is ideal for rear-view mirrors whose shapes are often oblong and rotation of a polarizer is awkward.
In the event of a power failure, these polarizing mirrors are still capable of dimming. They can be made to function well in both hot and cold environments, have a long lifespan, and are inexpensive when compared to electrochromic mirrors.
Recommended Content
Technical Paper | Integrated Rear-view Mirror for Driver Monitoring System |
Technical Paper | Electronic Intelligent Turn Signal System |
Technical Paper | Strategies for Optimizing Headlamp Illumination and Visibility Along Curves |
Authors
- Joshua B. Gross - Center for Industrial Research Applications, West Virginia University
- Pete Donatelli - Center for Industrial Research Applications, West Virginia University
- Franz A. Pertl - Center for Industrial Research Applications, West Virginia University
- James E. Smith - Center for Industrial Research Applications, West Virginia University
Topic
Citation
Gross, J., Donatelli, P., Pertl, F., and Smith, J., "Mechanically Dimmable Mirrors," SAE Technical Paper 2006-01-0946, 2006, https://doi.org/10.4271/2006-01-0946.Also In
Automotive Lighting Technology & Human Factors in Driver Vision & Lighting; Rear Vision & Indirect Vision
Number: SP-1993; Published: 2006-04-03
Number: SP-1993; Published: 2006-04-03
References
- Lewis, Alan L. “Rearview Mirrors and Visual Performance: the Role of Afterimages.” SAE International 1996
- Gentex Corporation Why NVS Mirrors [Automotive Section of Website] Zeeland, Michigan Gentex Corporation c2004 [cited 2004 Aug. 6], [about 2 pages]. Available from: < http://www.gentex.com/auto_why_nvs.html >
- Land, Edwin H. “Some Aspects of the Development of Sheet Polarizers.” 1951 957 963
- Donatelli, Peter L. “Methods for creating a Multi Axis Polarizer for Visible Light…” Thesis West Virginia University 2005
- National Highway Traffic Safety Administration (US) [NHTSA] Department of Transportation 2003 Oct. 1 10 United States Printing Office
- Gentex Corporation Robust Technology, Value Added Features and Execution 2004 Presentation Zeeland, MI Gentex Corp 2004