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A Rear-View Side Mirror with Exterior Lens to Improve Field of View and Aerodynamics of Automobiles
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 28, 2017 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
This paper presents a novel rear-view side mirror constructed with an external lens and a planar mirror to improve aerodynamics and minimize the blind spot of drivers. To resolve the drawback of the conventional side mirror, some vehicle manufacturers have lately attempted to develop a camera-based solution to replace traditional protruding side mirrors. However, driving vehicles on public roads without such side mirrors is illegal in most countries including the USA. The United States Federal Motor Vehicle Safety Standards (FMVSS) specifies that the mirror installed on the driver side should be flat and should have unit magnification.
The proposed system avoids the large, protruding, external side-mirror that is currently used in present-day vehicles. Instead, it integrates this external element into the interior of the vehicle to improve aerodynamic resistance, safety, and styling. The proposed side mirror effectively solves the problems caused by traditional automobile rear-view mirrors. Design of the exterior lens was executed using a freeform optical technique to obtain an undistorted image on the interior flat panel mirror.
Two prototypes were manufactured to demonstrate the performance of the proposed side-mirror. One had a protrusion length of 7.0 cm from the vehicle body and a field of view (FOV) angle of 40° for the passenger and driver sides, while the other mirror had an FOV of 25° with unit magnification ratio and a protrusion length of 10.0 cm on the driver side. This proposed side mirror can be an alternative to conventional side mirrors while complying with FMVSS regulations.
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CitationPark, H., "A Rear-View Side Mirror with Exterior Lens to Improve Field of View and Aerodynamics of Automobiles," SAE Technical Paper 2017-01-1358, 2017, https://doi.org/10.4271/2017-01-1358.
Data Sets - Support Documents
|Unnamed Dataset 1|
- Yemenici , O. Pressure Measurements of the Flow over a Rearview Side Mirror International Journal of Sciences 2 66 69 2013 2305-3925
- Murukesavan , P. , Mu’tasim , M. and Sahat , I. Computational Analysis of an Effect of Aerodynamic Pressure on the side view mirror geometry presented at 2nd International Conference on Mechanical Engineering Research (ICMER 2013) Malaysia Dec 1-3, 2013 10.1088/1757-899X/50/1/012039
- Lee , H. , Kim , D. and Yi , S. Horizontally Progressive Mirror for Blind Spot Detection in Automobiles Optics Letter 38 3 317 319 2013 10.1364/ol.38.000317
- Thomas , C. and Thomas , G. Vehicle Driver’s-side, Rear-view Mirror, Eliminating Blind Spot U.S. Patent 2003/0039039 A1 August 21 2001
- Morgan , J. and Blanco , M. Synthesis Study of Light Vehicle Non-planar Mirror Research NHTSA DOT HS 811-328 47 May 2010
- Vachss , F. , Southwell , W. , Malus , J. and Khoshnevisan , M. Automotive Rear View Mirror System U.S. Patent 5,559,640 September 24 1996
- Couery , A. and Payen , C. Indirect Vision System Enabling Blind Spots to be Minimized without Distorting the Formed Image U.S. Patent 8,488,256 July 16 2013
- Hicks , R. A. Controlling a ray bundle with a free-form reflector Optics letters 33 15 1672 1674 2008 10.1364/OL.33.001672
- Fang , F. Z. , Zhang , X. D. , Weckenmann , A. , Zhang , G. X. , and Evans , C Manufacturing and measurement of freeform optics CIRP Annals-Manufacturing Technology 62 2 823 846 2013 10.1016/j.cirp.2013.05.003
- Reed , M. , Lehto , M. and Flannagan , M. Field of View in Passenger Car Mirrors UMTRI-2000-23
- Meldrum , J. Automobile Driver Eye Position SAE Technical Paper 650464 1965 10.4271/650464
- Test drive by seamless transportation Lab, Yonsei University https://www.youtube.com/watch?v=kto2D40QKMY&feature=youtu.be