초록 ▼

A display device and method are provided whereby light rays from a glareproducing light source are concentrated on the signal portion of the display device to enhance its luminosity. Display devices are provided that use reflecting and refracting light concentrators and signal portions that might in

A display device and method are provided whereby light rays from a glareproducing light source are concentrated on the signal portion of the display device to enhance its luminosity. Display devices are provided that use reflecting and refracting light concentrators and signal portions that might include translucent light directing means or collimators. The invented display devices can find application in various fields where glare occurs.

대표청구항 ▼

In a display device having a bright signal portion disposed on a darker background surface, said display device subject to being viewed at least part of the time from a selected locus and together in the same field of vision with light rays coming from the direction of an intense and moving light so

In a display device having a bright signal portion disposed on a darker background surface, said display device subject to being viewed at least part of the time from a selected locus and together in the same field of vision with light rays coming from the direction of an intense and moving light source, said locus defined by those of said light rays that are anticipated to by-pass the proximity of said display device, the improvement comprising brightness enhancing means adapted to automatically enhance or increase the luminosity of said signal portion when said locus, said display device and said light rays are substantially aligned or when said display device and said light rays are in the same field of vision when viewed from said locus, said brightness enhancing means comprising: (a) at least one light concentrator having selected focal length disposed on said display device in such a manner so as to be facing into the direction of said light rays when said locus, said display device and said light rays are substantially aligned, said light concentrator adapted and positioned to converge some of said light rays toward said signal portion and (b) light directing means disposed on said signal portion, said light directing means adapted to direct some of said light rays coming through said light concentrator toward said locus.