Yutai optics can also make aspheric lenses.Because of the shorter focal lengths and a lower f/# than other lenses, condenser lenses can be used in close proximity to one another or other optical elements, which makes them ideal for focusing light onto a detector or other light collection element. 

The lens surface is precision molded on the aspheric side while the plano or spherical convex side is ground and polished. For best performance, the flatter side of the lens should face the source. Please note that although the B270 substrate transmits from 380 - 2100 nm, these lenses are designed for use at visible wavelengths; focal shift plots are provided in the tables below for each lens for performance at other wavelengths. 

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