Specialized optical systems for measurement of retroreflective materials

Justin J. Rennilson

doi:10.1117/12.279233

26 September 1997 Specialized optical systems for measurement of retroreflective materials

Justin J. Rennilson

Proceedings Volume 3140, Photometric Engineering of Sources and Systems; (1997) https://doi.org/10.1117/12.279233
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

The unique characteristics of the different types of retroreflective materials and devices used in the transportation field, require specialized designs of optical systems to accurately measure their properties. Various instruments are available to measure the retroreflective characteristics both in the laboratory and in the field. Certain parameters, such as aperture angles and the tolerances on observation angle and entrance angles must be considered when designing such systems or large inaccuracies will occur. Specific differences in the properties of the retroreflectors require instruments that resolve those differences. Geometry of measurement is an important factor in the instrument design. Examples of the light distribution returned from these retroreflectors and the corresponding measurement instrumentation are shown.

Citation Download Citation

Justin J. Rennilson "Specialized optical systems for measurement of retroreflective materials", Proc. SPIE 3140, Photometric Engineering of Sources and Systems, (26 September 1997); https://doi.org/10.1117/12.279233

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available