Stray light elimination in making projection display measurements

Paul A. Boynton; Edward F. Kelley

doi:10.1117/12.344651

12 April 1999 Stray light elimination in making projection display measurements

Paul A. Boynton, Edward F. Kelley

Proceedings Volume 3636, Flat Panel Display Technology and Display Metrology; (1999) https://doi.org/10.1117/12.344651
Event: Electronic Imaging '99, 1999, San Jose, CA, United States

Abstract

Electronic front-projection display specifications are often based on measurements made in ideal darkroom conditions. However, not everyone has access to such a facility. In many environments, ambient light from other sources in the room illuminates the screen. This includes room lights directly illuminating the screen and the reflection of these light sources off of walls, floors, furniture, and other objects. Additionally, back-reflections from the projection screen must be considered. These stray light components contribute to the measured value, giving an inaccurate measurement of the projector light output. Thus, these conditions may make the task of adequately comparing and evaluating different projection systems difficult. We can better verify whether the projector is operating according to its specifications or compare its performance with other projectors by compensating for stray light. A simple projection mask constructed from black plastic and a stray-light elimination tube are presented as solutions that can provide an accurate measurement of projector light output in many ambient light conditions.

Citation Download Citation

Paul A. Boynton and Edward F. Kelley "Stray light elimination in making projection display measurements", Proc. SPIE 3636, Flat Panel Display Technology and Display Metrology, (12 April 1999); https://doi.org/10.1117/12.344651

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