Light-weight high resolution viewer

Abstract

A magnification loupe carried by spectacles has a Galilean lens system comprising a single-element eyepiece lens and a two-element objective lens. The loupes may be mounted to eyeglass frames by a flip-up mounting member, or they may be mounted through the eyeglass lenses of the spectacles. The loupes provide high magnification while minimizing weight to thereby reduce strain and discomfort to users. In an exemplary embodiment, the objective lens has a non-circular shape that provides a wide field of view while further minimizing the weight of the loupe. A correction lens may be interchangeably coupled to the loupe housing to permit selective replacement with another correction lens to vary the working distance of the loupe.

1 . A magnification loupe carried by a user wearable device, comprising: 
 a housing having a first end with a first aperture for supporting an eyepiece lens, and a second end with a second aperture for supporting an objective lens;    an eyepiece lens disposed in said first end of said housing; and    an objective lens disposed in said second end of said housing;    said objective lens having a non-circular shape, wherein at least two oppositely disposed first peripheral edges are defined by a first radius extending from a first center, and wherein at least two oppositely disposed second peripheral edges are defined by at least one second radius extending from at least a second center not coincident with said first center, said second radius having a length different from said first radius.    
   
   
       2 . The magnification loupe of  claim 1 , wherein said second peripheral edges are semi-elliptical in shape.  
   
   
       3 . The magnification viewer of  claim 1 , wherein said eyepiece lens comprises a single lens element, and wherein said objective lens comprises two lens elements.  
   
   
       4 . The magnification loupe of  claim 1 , further comprising a correction lens couplable to said housing proximate said first end.  
   
   
       5 . The magnification loupe of  claim 4 , wherein said correction lens is interchangeably coupled to said housing, whereby said correction lens is selectively removed from said housing and replaced with a different correction lens to thereby vary a working distance of the loupe.  
   
   
       6 . The magnification loupe of  claim 1 , wherein said housing is configured for mounting through a lens of the user wearable device.  
   
   
       7 . The magnification loupe of  claim 1 , wherein said housing is configured to be mounted to the user wearable device by a mounting member secured to a frame of the user wearable device.  
   
   
       8 . A magnification viewer, comprising: 
 a user wearable device having a frame and at least one eyeglass lens supported on said frame; and    at least one magnification loupe operatively coupled to said user wearable device, said magnification loupe comprising: 
 a housing having a first end with a first aperture for supporting an eyepiece lens, and a second end with a second aperture for supporting an objective lens,  
 an eyepiece lens disposed in said first end of said housing, and  
 an objective lens disposed in said second end of said housing,  
 said objective lens having a non-circular shape, wherein at least two oppositely disposed first peripheral edges are defined by a first radius extending from a first center, and wherein at least two oppositely disposed second peripheral edges are defined by at least one second radius extending from at least a second center not coincident with said first center, said second radius having a length different from said first radius.  
   
   
   
       9 . The magnification viewer of  claim 8  further comprising a correction lens interchangeably coupled to said housing proximate said first end, whereby said correction lens may be selectively removed from said housing and replaced with a different correction lens to thereby vary a working distance of the loupe.