1 June 2004 Pixel image analysis of light valve projector considering apodization caused by illumination
Author Affiliations +
Abstract
We discuss the effect of apodization on an entrance pupil of projection optics in a light valve (LV) projector. During a design process of projection optics, uniform illumination on its entrance pupil is generally assumed. However, actual illuminance distribution on the entrance pupil is not uniform due to an influence of a lamp and reflector construction. The numerically calculated angular intensity distribution from a light source is converted to an illuminance distribution on the entrance pupil. By considering the illuminance distribution as an apodization function, an image of projected pixels as well as the modulation transfer function (MTF) and encircled energy function (EEF) are calculated. By the pixel image simulation, apodization is found to improve the separation between pixels and the edge blur of a pixel. Considering the apodization, the MTF at the second harmonic of the fundamental frequency increases by 1.39 times and the radius of the EEF at 50% energy decreases by 0.66 times. As the pixel density of LV increases, this simulation method becomes more useful for improving the evaluation accuracy of design and manufacturing tolerance of high-resolution projection displays with stringent optical specifications.
© (2004) Society of Photo-Optical Instrumentation Engineers (SPIE)
Shinsuke Shikama, Shinsuke Shikama, Hiroshi Suzuki, Hiroshi Suzuki, Takao Endo, Takao Endo, Akira Sekiguchi, Akira Sekiguchi, } "Pixel image analysis of light valve projector considering apodization caused by illumination," Optical Engineering 43(6), (1 June 2004). https://doi.org/10.1117/1.1737786 . Submission:
JOURNAL ARTICLE
6 PAGES


SHARE
RELATED CONTENT

High-dynamic range DMD-based IR scene projector
Proceedings of SPIE (March 07 2013)
High-dynamic range DMD-based infrared scene projector
Proceedings of SPIE (July 24 2013)
Optical system design with wide field of view and high...
Proceedings of SPIE (March 04 2018)
Catadioptric relay for dual DMD projectors
Proceedings of SPIE (September 20 1998)
Advanced multiscopic display via temporal multiplexing
Proceedings of SPIE (March 08 2007)

Back to Top