Optical imaging system with rod lens array

Details Optical imaging system with rod lens array Optical imaging system with rod lens array

2006-03-14

2006-03-14

Poon, King Y. (Department: 2624)

Facsimile and static presentation processing

Facsimile

Picture signal generator

C358S003050, C358S501000, C358S401000, C358S505000, C359S652000, C359S654000

Reexamination Certificate

active

07012721

ABSTRACT:
An optical imaging system is provided that includes a rod lens array and has the optimum refractive index distribution for achieving a high resolving power. The refractive index distribution of rod lenses can be expressed byin-line-formulae description="In-line Formulae" end="lead"?n(r)2=n02·{1−(g·r)2+h4·(g·r)4+h619 (g·r)6+h8·(g·r)8}Eq. 45in-line-formulae description="In-line Formulae" end="tail"?where r is a radial distance from the optical axis of the rod lenses, n0is a refractive index on the optical axis of the rod lenses, and g, h4, h6and h8are refractive index distribution coefficients. The refractive index distribution coefficients h4, h6and h8are set on a spheroid in a Cartesian coordinate system with h4being x-axis, h6being y-axis and h8being z-axis. The spheroid is defined by a vector X* that is expressed byin-line-formulae description="In-line Formulae" end="lead"?X*=(x, y, z)=O*+kAA*+kBB*+kCC*Eq. 46in-line-formulae description="In-line Formulae" end="tail"?where O* is a vector from the origin of the Cartesian coordinate system to the center of the spheroid, A*, B* and C* are vectors in the directions of the major axis, the mean axis and the minor axis of the spheroid, respectively, and kA, kBand kCsatisfy kA2+kB2+kC2≦1.

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