OPTICAL MAGNIFYING APPARATUS WITH A SLIDE LIGHTING SYSTEM

摘要

An optical apparatus with a slide lighting system for detecting a fertile period during a woman's menstruation cycle from her saliva has inner and outer telescopic tubular bodies. The inner tubular body has an optical system of three, fixed lenses for 100 fold magnification of the saliva on a slide. The outer tubular body has, at one free end, a window for receiving the slide and threading for the axial attachment of another light-device tubular body for lighting the slide.