Patent ID: 8023195

Claim:
An apparatus for use with a head-mounted device having an image projection device for displaying an image in the visual field of a user, the user having a head and eyes, the image projection device being adapted to emit light having a peak wavelength range and a Full Width Half Maximum (FWHM) wavelength range, the apparatus comprising: a first visor including an inner surface and a display surface located on the inner surface, the first visor having a transmittance of less than 1% for light in a first wavelength range, the first wavelength range overlapping with the FWHM wavelength range, the first visor having a deployed position in which the display surface is positioned at least partially within the visual field of the user and is positioned to reflect light emitted from the image projection device, the inner surface facing the eyes of the user when the first visor is in the deployed position; and a second visor having a deployed position in which the second visor is positioned at least partially within the visual field of the user and the second visor is positioned between the first visor and the eyes of the user, the second visor having a transmittance of less than 1% for each of a first group of at least one light radiation threat and having an integrated luminous transmittance of at least 20% for light emitted by the image projection device.