NOTE: The size of the arrow indicates the force per node
which is based on the width of the adjacent element faces on which the pressure is applied
and the magnitude of the applied pressure or force. A pressure force of 10000 psi has been applied along the longitudinal outside edge of of the lens and on the top and bottom surfaces up to the centerline of the O rings. In addition, O ring forces of 50 #/radian and 30 #/radian have also been applied in the area of the O ring grooves at the top and bottom edges respectively. This finite element lens model is made up of 4 generated blocks with each block, 21 elements by 21 elements for a total of 1870 nodes and 1764 elements. The element size in the lowest and most critical section is .2mm by .3mm.
