| Summary: | 碩士 === 國立交通大學 === 光電工程研究所 === 86 === The chromatic uniformity and electro-optic propertiesof LC
projector was analyzed based upon liquid crystaltheorem,
extended jones matrix method and chromatics. Here, a convenient
and flexible simulation tool for LCprojector was developed ,
which can greatly reduce thecomplicated process in design work
and the determinationof specification in LC projector. Using
this tool, theeffect of different dichroic coating design,
uniformityof illumination and electro-optic properties of
LCpanels were investigated. In order to achieve higher
chromatic uniformity of LCprojector, gradation coating on
dichroic mirrors issuggested to compensate the shift of dichroic
spectrumdue to the change of light incident angles, and
moresaturated color performance can be achieved. Moreover,the
illuminating uniformity strongly affects chromaticuniformity of
the display imagery. Thus chromaticuniformity can be improved by
increasing illuminatinguniformity of LC projectors. Finally, the
non-uniformtransmittance effect caused by LC panels was
calculatednumerically by simulating LC molecular deformation
andoptical transmittance. This result can be used to
adjustchromatic uniformity of LC projector by proper
drivingmethods or optical designing. The presented analyses
arevery useful to improve the chromatic uniformity of
LCprojectors.
|
|---|
