Projection image display apparatus

Details Projection image display apparatus Projection image display apparatus

1997-12-24

2000-09-05

Harvey, David E.

Television

Video display

Projection device

348756, H04N 931

Patent

active

061150819

ABSTRACT:
The projection image display apparatus includes a plurality of image generating sources for generating three primary colors, including red, green, blue image light, respectively, and a projection lens containing a plurality of lens elements provided in correspondence with each of said image generating sources for enlarging/projecting images displayed by the image generating sources onto a screen. The projection lens corresponding to the red image generating source includes a light transmitter that satisfies the condition: TRS<TRL/3, wherein TRS is the transmittance with respect to a wavelength .lambda. RSmax of sub-peak energy of a spurious component existing in a short-wavelength-sided region rather than a peak energy waveform .lambda. Rmax of a spectral distribution of the red image light, and TRL is the transmittance with respect to a wavelength .lambda. RLmax of sub-peak energy of a spurious component existing in a long-wavelength-sided region rather than the peak energy wavelength .lambda. Rmax of the spectral distribution of the red image light.

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