Ex parte YOO et al. - Page 2




          Appeal No. 1998-2009                                                        
          Application No. 08/508,250                                                  


          arranged such that the distance between the pair of lenses is               
          shorter than the sum of the focal lengths of the pair of                    
          lenses.  Representative independent claim 1 is reproduced as                
          follows:                                                                    
               1.   An optical modulating device comprising:                          
                    a light source;                                                   
                    an optical modulator; and                                         
                    a pair of lenses arranged along a light path between              
          said light source and optical modulator, including a                        
          collimating lens and a focal lens for focusing light generated              
          from said light source into a spot on the center of said                    
          optical modulator,                                                          
                    wherein said pair of lenses are so arrayed that the               
          distance between said pair of lenses is shorter than the sum                
          of the focal lengths of said pair of lenses.                                
               The Examiner relies on the following references:                       
          Tatsuno et al. (Tatsuno)           5,377,212                Dec.            
          27, 1994                                                                    
          Kobayashi et al. (Kobayashi)       5,475,537                Dec.            
          12, 1995                                               (filed               
          Feb. 28, 1994)                                                              
               Claims 1 through 8, 11 and 12 stand rejected under 35                  
          U.S.C.  103(a) as being unpatentable over Tatsuno in view of               
          Kobayashi.     Rather than reiterate the arguments of                       




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