Patent ID: 7320534

Claim:
A display device for projecting an image, comprising: an LED for emitting light; an optical member which selectively outputs light components having wavelengths not shorter than a predetermined minimum-limit wavelength, the minimum-limit wavelength being shorter than a peak wavelength of the light from the LED and lying within a FWHM of the light from the LED; and a mirror which selectively reflects light components having wavelengths not longer than a predetermined maximum-limit wavelength, the maximum-limit wavelength being longer than the peak wavelength of the light from the LED and lying within the FWHM of the light from the LED, wherein one of the optical member and the mirror is positioned to receive the light from the LED and to output or reflect the light components having the wavelengths not shorter than the minimum-limit wavelength or the light components having the wavelengths not longer than the maximum-limit wavelength to the other one of the optical member and the mirror.