Abstract

We investigate the effect of new point spread functions (PSFs) on the uniformity and contrast of high dynamic range displays that use local dimming of LEDs to yield a large dynamic range. A PSF shaped like a quadratic B-spline was hypothesized to create a uniform brightness backlight, as well as producing linear and quadratic gradients, while maintaining a very high contrast. We have found a practical optical structure to produce such a PSF, yielding a nonuniformity of only ±0.8%, while enabling a contrast ratio of 51 and 331 over distances of one and two unit cell spacings, respectively.

© 2013 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Design of a brightness-enhancement-film-adaptive freeform lens to enhance overall performance in direct-lit light-emitting diode backlighting

Bin Xie, Run Hu, Qi Chen, Xingjian Yu, Dan Wu, Kai Wang, and Xiaobing Luo
Appl. Opt. 54(17) 5542-5548 (2015)

Design, fabrication and characterization of transparent retro-reflective screen

Shoaib R Soomro and Hakan Urey
Opt. Express 24(21) 24232-24241 (2016)

Compressive multi-mode superresolution display

Felix Heide, James Gregson, Gordon Wetzstein, Ramesh Raskar, and Wolfgang Heidrich
Opt. Express 22(12) 14981-14992 (2014)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (11)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription