Aspherical lens element

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Our uncoated aspheric condenser lenses are fabricated out of Schott B 270® Ultra-White or equivalent glass. These condenser lenses provide excellent transmission in the visible to near-infrared regions. The aspheric condenser lens surface is molded, while the plano or spherical surface is ground and polished. Ideal for light collection, projection, illumination, detection, and condensing applications. •Schott B 270® Ultra-White Glass or equivalent substrates •Molded aspheric condenser lens surface •Ground and polished spherical and plano surfaces •Aspheric lens surface reduces spherical aberration Schott B270® Ultra-White Glass Substrates Our aspheric lenses are made from Schott B 270® Ultra-White Glass which has numerous advantages for condenser lenses. For example, it is highly transparent across a wide range of wavelengths, and is highly resistant to intense UV exposure, making it ideal for use with light sources such as high intensity arc lamps. Advantages of Aspheric Lenses In applications that require large acceptance angles, such as light gathering for illumination, spherical lenses are unsuitable due to spherical aberration, or the effect of refractive power of a spherical surface becoming greater with increasing aperture. Aspheric lenses maintain constant focal length or very high NA, avoiding the need for multiple elements to correct spherical aberration. This simplifies system design by reducing weight and component count. It also results in less transmission loss, and less ghosting due to having fewer surfaces. The primary drawback of an aspheric lens is off-axis performance is poor.