Ex Parte Piontkowski - Page 5


                 Appeal No.  2007-0467                                                         Page 5                  
                 Application No.  10/646,929                                                                           
                 The combination of Takizawa, Yaamoto and Harooni:                                                     
                        Claims 12 and 15 stand rejected under 35 U.S.C. § 103 as being                                 
                 unpatentable over the combination of Takizawa, Yamamoto and Harooni.                                  
                 For clarity we reproduce Takizawa’s Figures 3 and 4 below:                                            











                        Takizawa discloses a slit lamp having a slit illumination system, a                            
                 binocular microscopic system and a photographing system, for observation of the                       
                 endothelial cells of the cornea.  Takizawa, abstract.  The microscopic system                         
                 includes an objective lens 11 and variable power lenses 12a and 12b.  Takizawa,                       
                 column 2, lines 66-68.  According to Takizawa, the variable power lenses 12a                          
                 and 12b                                                                                               
                        are placed at the back of the objective lens 11 and form a pair of                             
                        parallel optical paths.  The rays of light passing through the variable                        
                        power lenses 12a, 12b then pass through lenses 13a, 13b and                                    
                        erecting Porro prisms 14a, 14b and form images on imaging faces                                
                        15a, 15b, which are observed through oculars 16a, 16b,                                         
                        respectively.                                                                                  
                 Takizawa, column 2, line 68 – column 3, line 6, emphasis removed.  Takizawa                           
                 teaches that the                                                                                      
                        variable power lenses 12a and 12b are fitted onto a rotary member                              
                        21 which is turnably fitted onto a lens-barrel 20 around an axis                               
                        which is at right angles to the optical axis.  When this rotary                                





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