Refractive Aspherical Diffractive Elements And Hybrids

Aspheric, diffractive, and hybrid refractive diffractive optical elements can be realized affordably with Lexitek’s Near-Index-Match™ (NIM™) optics. These optics can have aspheric or diffractive surfaces at the interface of two materials. The Near-Index-Match™ greatly reduces the cost to master or directly machine the boundary surface and has much looser tolerances compared with aspheric or diffractive surfaces interfaced with air. Near-Index-Match™ optics add a powerful new dimension to optical designers, adding aspheric surfaces and/or diffractive surfaces for aberration correction, achromatization and athermalization. NIM™ optics can be made with glass or plastic substrates and typically have an optical polymer on one or both exterior surfaces. Lexitek uses proprietary fabrication techniques to produce inexpensive, high-quality optics with rapid turn around.