Objective lens system utilizing axial gradient index (grin) lens

Details Objective lens system utilizing axial gradient index (grin) lens Objective lens system utilizing axial gradient index (grin) lens

1995-03-29

1997-04-15

Sugarman, Scott J.

Optical: systems and elements

Lens

With graded refractive index

359768, 359776, G02B 300, G02B 936, G02B 960

Patent

active

056215746

ABSTRACT:
Axial gradient index of refraction lens elements are used in a lens system, for instance for a photographic objective lens, to correct monochromatic and chromatic lens aberrations, thereby reducing the number of lens elements required to achieve good optical performance in the overall lens design compared to for instance a lens system using aspheric lenses. The gradient index (GRIN) lens elements are bi-convex and/or meniscus type lens elements. The large refractive index gradients as well as large dispersion value gradients provide aberration correction in the overall lens system. A high aperture ratio lens system uses six lens elements where the first and last lens elements are positive power lens elements having refractive index and/or dispersion gradients along the optical axis.

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Richard N. Pfisterer, "Design of a 35-mm Photographic Objective Using Axial GRIN Materials," 10 pages.
P.J. Sands, "Inhomogeneous Lenses, IV. Aberrations of Lenses with Axial Index Distributions," Journal of The Optical Society of America, vol. 61, No. 8, Aug., 1971, pp. 1086-1091.
"Optical Design with Linear Axial Gradient Index Materials," 8 pages.
Paul K. Manhard, "Advantages of Non Linear Axial Gradients in Optical Design," 6 pages.

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