An image display device including a light emission section which emits light to an intensity adjusting section and a wavelength conversion section which change the intensity and wavelength of the emitted light. Phosphors and phosphor like materials are employed in wavelength conversion and a liquid crystal is employed for the light adjustment. The light emission device may include plural semiconductor light emitting elements having a different wavelength ranges such as diodes stacked in a compact and predetermined order such that wavelengths of light from each diode are emitted from the light emitting elements.

 
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< Anti-reflection film and process for the preparation of the same

< Gray-scale image display device that can reduce power consumption when writing data

> Apparatus and method for in-situ measurement of polymer quantities output from an extractor

> Optical filter having filter layer containing infrared absorbing dye and ultraviolet absorbing agent

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