Paper
25 April 2000 Contrast ratio of vertically aligned nematic cell
David Armitage
Author Affiliations +
Proceedings Volume 3954, Projection Displays 2000: Sixth in a Series; (2000) https://doi.org/10.1117/12.383377
Event: Electronic Imaging, 2000, San Jose, CA, United States
Abstract
The vertical aligned nematic cell is favored in reflective projector systems because of its inherent high contrast ratio, which is essentially independent of cell gap variation and wavelength. Off-axis projectors are of commercial interest due to lower manufacturing cost. A computational study of projector contrast ratio as a function of projection f/number and offset angle is presented. The off-axis system maintains a contrast ratio greater than 100 up to offset angles of 15-degrees. Modest compensation with a negative uniaxial retarder allows the off-axis projector to reach contrast ratios comparable with on-axis systems.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
David Armitage "Contrast ratio of vertically aligned nematic cell", Proc. SPIE 3954, Projection Displays 2000: Sixth in a Series, (25 April 2000); https://doi.org/10.1117/12.383377
Lens.org Logo
CITATIONS
Cited by 1 scholarly publication.
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Chromium

Wave plates

Projection systems

Liquid crystals

Refractive index

Birefringence

Reflectivity

RELATED CONTENT

Thin crystalline film retarders for LCD
Proceedings of SPIE (May 22 2007)
Design And E 0 Performance Of A Low Voltage Highly...
Proceedings of SPIE (January 16 1989)
Liquid crystal response time
Proceedings of SPIE (April 17 1998)
Viewing-angle improvement with compensation films for LCDs
Proceedings of SPIE (August 18 1998)

Back to Top