Smith's spherical lenses are offered exclusively in carbonic-x material for optimum impact and scratch resistance, increased visual acuity and enhanced contrast, along with TLT optics and a base 6x4 toric shape. This pioneering shape provides the highest level of optical clarity, improved fit ...
the sagittal direction, the cylindrical back surface 46B of toric lens 46 focusses the sheetlike beam to a wedge-shaped configuration 24A forming a focussed line image on plane 12A of modulator 12. Lenses 40 and 46 are relatively simple and inexpensive components and may be formed of plastic....