The JCM
The new JCM soft contact lens inspection instrument has been designed principally to assist laboratories manufacturing moulded lenses. High rates of production require the sampling of lenses to be both rapid and accurate. This means minimum handling and settling time in the wet cell. We have achieved these aims with the JCM. A soft contact lens is placed in the cell and by switching between the two lamps an image of the contact lens is projected onto the screen to view, either, side elevation with overall lens height measurement and edge inspection (Fig. 9) or diameter measurement and surface inspection (Fig.8). Both these measurements are made without moving the lens in the wet cell. The overall height scale (Fig. 9) is 3.5mm – 4.5mm however this scale can be extended to any range most suited to individual requirements. For temperature control within the cell we recommend either the TC20 or the TCU.