The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 1999
Filed:
Jun. 26, 1998
Applicant:
Inventor:
Michael E Harrigan, Webster, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359642 ; 359708 ;
Abstract
A lens system comprises a plurality of lens elements including at least one positive power lens element and at least one negative power lens element, the plurality of lens elements having radii of curvature, thicknesses, indices of refraction, Abbe V numbers and partial dispersion coefficients so as to provide in combination (i) magnification M so that 5<M<20; (ii) magnification variation .DELTA.M<5% for 0.46 to 0.7 micron wavelength range; and (iii) beam waist images located along an optical axis with axial positions being less than 0.3 Rayleigh distances from an image plane.