Optimised Glass Rod Drawing Process for Gradient-Index Microlenses
نویسندگان
چکیده
Gradient-index (GRIN) microlenses (Fig. 1 inset) are important components for example in highresolution optical sensors, optical communication and in technical as well as in medical endoscopy [1, 2]. The ability of GRIN lenses to have plane optical surfaces offers great qualitative advantages in the mounting and miniaturisation of microoptical systems. Instead of the conventional spherical lens surfaces, a radially decreasing refractive index gradient is used which can be achieved by a rotationally symmetrical variation of the glass composition [3].
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