LightPath Technologies Inc. has unveiled RoHS-compliant molded glass aspheric lenses with a high index of refraction for use in telecommunications systems. The company has developed a set of lenses that replaces its current lead glass-based products. Some of them are molded into holders for easy assembly. The demand for these lenses is being driven by the infrastructure upgrade for 3G wireless networks and new networks in developing countries, such as China, which has more than 700 million subscribers and continues to grow. Five models are available, with numerical apertures of 0.20, 0.60 (two models), 0.17 and 0.10. Focal lengths are 2.51, 0.60. 0.70, 4.0 and 2.51 mm. Outer diameters are 1.805, 2.0 x 2.2 (T-shape) and 3.00 (three models). Clear apertures are 1.01, 0.72, 0.84, 1.37 and 0.51 mm, and working distances are 1.84, 0.22, 0.29, 3.36 and 1.755 mm. One model has no holder, another has a T-holder, and three have cylindrical ones.