Ex parte ANDERSON et al. - Page 2

              Appeal No. 1998-0160                                                                                      
              Application No. 08/529,330                                                                                

                     The invention is directed to a combined day and night sighting apparatus, which                    
              may be further combined with a laser rangefinder apparatus.  Claim 1 is reproduced                        
                     1.     An integrated day and night sighting system comprising:                                     
                            a daylight optical system having daylight optics for collecting and focusing                
                     visible light from an objective lens onto an eyepiece lens assembly in a daylight                  
                     path between said objective lens and said eyepiece lens assembly;                                  
                            a night light corrector lens mounted adjacent said daylight objective lens,                 
                     said night correction lens including a pair of tilted lens elements to compensate for              
                            an image converter for night light use and being movably supported for                      
                     movement into and out of the daylight light path between a daylight position out of                
                     the light path and a night light position in the light path, said image converter being            
                     positioned for said eyepiece lens assembly to focus thereon when said image                        
                     converter is in said light path;                                                                   
                            a night reticle display positioned between said image converter and said                    
                     eyepiece lens assembly;                                                                            
                            a night light primary mirror positioned to reflect light from said night light              
                     corrector lens; and                                                                                
                            a night light secondary mirror positioned to receive light from said night                  
                     primary objective mirror and to focus the light onto said image converter when said                
                     image converter is in a night light position, whereby an integrated night and day light            
                     optical system is provided in a compact packaging.                                                 

                     The examiner relies on the following references:                                                   

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