초록 ▼

Apparatus for front lighting a display includes a light distributing wedge, spaced from the front of the display to be lighted, through which the display can be viewed. A light source is provided aside the wedge to direct light to an inter space between the wedge and the display. A reflective surfac

Apparatus for front lighting a display includes a light distributing wedge, spaced from the front of the display to be lighted, through which the display can be viewed. A light source is provided aside the wedge to direct light to an inter space between the wedge and the display. A reflective surface is provided at the wide end of the wedge to reflect light incident upon it. Thus, light from the light source is directed onto the display through various reflecting and refracting paths, including directly onto the display from the light source, reflected from the interior surface of the wedge onto the display, and refracted and reflected within the wedge to be emitted in the direction of the display.

대표청구항 ▼

A front-lighted display system comprising: a display having a front surface from which visual indications can be viewed; a transparent light-distributing wedge having a narrow end and a wide end containing a reflective surface thereon, said wedge being spaced from the front surface of the display to

A front-lighted display system comprising: a display having a front surface from which visual indications can be viewed; a transparent light-distributing wedge having a narrow end and a wide end containing a reflective surface thereon, said wedge being spaced from the front surface of the display to form a space between the wedge and display and positioned such that the display can be viewed through said wedge; and means positioned adjacent the narrow end of said wedge and display and coupled for introducing light into the space between said wedge and display such that a portion of said light in said space is directed upon said wedge and is reflected onto said display, a portion of said light in said space is directed upon said wedge and is internally reflected within the wedge until it exits the wedge and illuminates said display, and a portion of said light in said space directly illuminates said display, whereby the display is illuminated bi-directionally resulting in a more uniformly lighted display.