Vision Biomed's patented 'Expanded-Pupil' technology allows users more efficient and easier use of quality microscope instruments in every application. The purely optical technology affords users greater freedom of head movement, significant reductions in eye fatigue and additionally increases the distance between the user's eyes and the eyepieces themselves - but how does it work?

Benefits for you... Superb optical performance Superior ergonomics, for sustained comfort Offers eye-relief and freedom of head movement Enables users to wear glasses Wide field of view

Expanded-Pupil technology expands the optical image exiting the eyepieces of a microscope.

Standard exit image

Expanded exit image

   The expanded optical image affords users a greater freedom of head movement, reducing fatigue and additionally increases the distance between the user's eyes and the eyepiece by a factor of four. For high magnification users in particular, the Expanded-Pupil image makes for more comfortable viewing of the outer parts of the optical field.

Standard eyepieces

Expanded-Pupil eyepieces

     Additionally, Expanded-Pupil technology also eliminates the effect of Mouches Volantes or 'floaters' in the eye. These common human imperfections result from tiny tissue fragments floating in the eyeball fluid and can significantly hinder microscope operations. The narrow, intense beam from standard eyepieces throws these fragments into sharp relief, appearing as floating objects.

Expanded-Pupil technology is employed in Vision Biomed's patented ISIS eyepieces, and are integral components of the DX41 and DX61 compound microscopes, as well as the Alpha stereo microscope. Similar technologies are used in the Lynx 'eyepieceless' stereo microscope and the Mantis stereo viewer.

To find out more or organise a demostration at your workplace contact Hawker Richardson by  or phone 1300 360 031.