Abstract: The light-weight high-magnification clinical viewer includes a three-element objective lens and a two-element eyepiece lens. Use of multiple lenses allows for a more compact package. The doublet eyepiece lens serves to reduce chromatic aberration at high magnification. The triplet objective serves to avoid vignetting while providing a wide field of view and reduced chromatic aberration. Image quality is further enhanced, while keeping the weight of the viewer down, through the use in the objective of light-weight high index glass.

Abstract: A light-weight clinical viewer includes a two-element objective lens and a single-element eyepiece lens. Use of multiple lenses allows for a more compact package. The doublet objective serves to reduce vignetting while providing a wide field of view and reduced chromatic aberration. Image quality is further enhanced, while keeping the weight of the viewer down, through the use in the objective of light-weight high index glass. Moreover, the invention permits the use of a single mounting barrel assembly for different eyepieces to reduce manufacturing costs.