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河北师范大学:《电动力学》课程教学资源(PPT课件讲稿)Graded Index(GRIN)Lenses

What is GRIN lenses GRIN lenses are short cylindrical lengths of glass with a graded refractive index: the index decreases with the square of the distance from the axis of the lens. GRIN lenses are very similar to graded index fibre and are sometimes called SELFOC lenses.
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