초록 ▼

A pressure-sensitive light-extracting drawing surface including a light guide operable to receive a light source, wherein light is extracted from a light guide when pressure is applied to the drawing surface by a marking instrument. A resultant light-emitting drawing can be erased or can be made per

A pressure-sensitive light-extracting drawing surface including a light guide operable to receive a light source, wherein light is extracted from a light guide when pressure is applied to the drawing surface by a marking instrument. A resultant light-emitting drawing can be erased or can be made permanent. An optional multi-layered film disposed on the light guide allows drawings to be created in fluorescent, luminescent, phosphorescent, or photochromic colors. A background sheet containing designs may be inserted behind the light guide. The drawing surface can be embodied as a pressure-sensitive light-extracting “paper.” The invention may be embodied as a drawing tablet, a drawing tablet add-on to a modular graphic display device, or a toy drawing tablet for tracing alphabets, numerals, and characters from comic books, cartoons, and movies.

대표청구항 ▼

The invention claimed is: 1. A device for making illuminated markings, the device comprising:a light guide plate comprising an optical material having a first surface and an opposing second surface sufficient to establish total internal reflection within the light guide plate;a light source opticall

The invention claimed is: 1. A device for making illuminated markings, the device comprising:a light guide plate comprising an optical material having a first surface and an opposing second surface sufficient to establish total internal reflection within the light guide plate;a light source optically coupled with the light guide plate such that light from the light source travels within the light guide plate due to the principle of total internal reflection; anda film mounted to the first surface of the light guide plate, wherein the film and the light guide plate are separated by a layer of air, such that an application of pressure to the film causes the film to displace air and bond with the first surface of the light guide plate at a bonded area, wherein the bonded area of the film to the light guide plate disrupts total internal reflection within the light guide plate, enabling light from the light guide plate to pass into the film, resulting in illumination of the bonded area of the film.