Photo-chromic light drawing sets

Abstract

In one embodiment of the invention, photo-chromic light drawing sets are disclosed including a photo-chromic page and a light pen. The photo-chromic page includes a flat transparent substrate having a page-like shape and one or more layers of photo-chromic ink applied onto the substrate. The flat transparent substrate to display an object underneath, and the one of more layers of photo-chromic ink are substantially transparent in an inactive state. The light pen selectively generates an activating light to shine onto the photo-chromic page and activate a portion of the one of more layers of photo-chromic ink. The activated portion of the one or more layers of photo-chromic ink is temporarily transformed from the inactive state to an active state in response to the activating light.

1 . A photo-chromic light drawing set comprising: 
 a photo-chromic page including 
 a flat transparent substrate having a page-like shape, the flat transparent substrate to display an object underneath, and  
 one or more layers of photo-chromic ink applied onto the substrate, the one of more layers of photo-chromic ink being substantially transparent in an inactive state;  
   a light pen to selectively generate an activating light to shine onto the photo-chromic page and activate a portion of the one of more layers of photo-chromic ink; and    wherein the portion of the one or more layers of photo-chromic ink is temporarily transformed from the inactive state to an active state in response to the activating light.    
   
   
       2 . The photo-chromic light drawing set of  claim 1 , wherein: 
 the transparent substrate is formed out of clear acrylic, plastic, vinyl, or other solid transparent material.    
   
   
       3 . The photo-chromic light drawing set of  claim 1 , wherein: 
 the one or more layers of photo-chromic ink temporarily transforms to display a color in the active state for a period of time before gradually decaying back to be substantially transparent in the inactive state.    
   
   
       4 . The photo-chromic light drawing set of  claim 1 , wherein 
 the object is artwork, and    the transparent substrate is placed on top of the artwork to allow a user to doodle or sketch onto the one or more layers of photo-chromic ink using the light pen.    
   
   
       5 . The photo-chromic light drawing set of  claim 1 , further comprising 
 a layer of standard visible ink applied onto the transparent substrate to form one or more visible printed lines.    
   
   
       6 . The photo-chromic light drawing set of  claim 1 , wherein 
 the one of more layers of photo-chromic ink are applied onto the transparent substrate to form printed photo-chromic lines.    
   
   
       7 . The photo-chromic light drawing set of  claim 1 , wherein 
 the one or more layers of photo-chromic ink are applied onto the transparent substrate in a pattern to form a design that is activated in response to the activating light.    
   
   
       8 . A photo-chromic light drawing playset comprising: 
 a substrate;    one or more layers of different colored photo-chromic ink applied to a surface of the substrate in a pattern of parallel arcs;    a light pen to selectively activate a portion of the one or more layers of different colored photo-chromic ink to display a portion of the pattern of parallel arcs as a colored rainbow; and    wherein the activated portion of the one or more layers of photo-chromic ink is temporarily transformed to display the one or more layers of different colored photo-chromic for a period of time before gradually decaying back to an inactive state.    
   
   
       9 . The photo-chromic light drawing playset of  claim 8 , wherein 
 the plurality of photo-chromic ink colors are arranged in a parallel linear pattern over a substrate.    
   
   
       10 . The photo-chromic light drawing playset of  claim 8 , wherein 
 in an inactive state, the plurality of photo-chromic ink is clear and reveals the color of the surface of the substrate.    
   
   
       11 . The photo-chromic light drawing playset of  claim 8 , wherein 
 the one or more layers of photo-chromic ink, wherein a first layer is applied onto the substrate, a second layer is applied onto the first layer.    
   
   
       12 . A photo-chromic light drawing set comprising: 
 a drawing board including 
 a substrate, and  
 a photo-chromic layer of ink applied onto a surface of the substrate;  
   a light marker including a plurality of ultraviolet light sources, the light marker to activate a large area of the photo-chromic layer of ink for each stroke of the light marker over the drawing board; and    wherein the activated area of the photo-chromic layer of ink is temporarily transformed from a first color to a second color differing from the first color for a period of time before gradually decaying back to the first color.    
   
   
       13 . The photo-chromic drawing board set of  claim 12 , wherein 
 the substrate of the drawing board is rigid.    
   
   
       14 . The photo-chromic drawing board set of  claim 12 , wherein 
 the drawing board further includes a mount coupled to the substrate to mount the drawing board to a wall.    
   
   
       15 . The photo-chromic drawing board set of  claim 12 , wherein 
 the substrate of the drawing board is flexible and can be rolled into a tube.