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. 30, 2005
Filed:
Aug. 26, 2003
Eun-hyoung Cho, Kyungki-do, KR;
Jin-seung Sohn, Seoul, KR;
Myung-bok Lee, Kyungki-do, KR;
Young-pil Park, Seoul, KR;
Eun-hyoung Cho, Kyungki-do, KR;
Jin-seung Sohn, Seoul, KR;
Myung-bok Lee, Kyungki-do, KR;
Young-pil Park, Seoul, KR;
Sumsung Electronics Co., Ltd., Suwon, KR;
Abstract
A hybrid lens with a high numerical aperture is described. The hybrid lens comprises a refractive surface that refracts incident light and a diffractive surface that diffracts light exiting the lens, the diffracting surface designed by a sag satisfying the following Equation:wherein fis a distance from a center peak to a focal point of the hybrid lens, r is a height from a center axis to each peak of the hybrid lens, n is the refractive index of the hybrid lens, λ is the wavelength of incident light and m is an integer. The hybrid lens is small and lightweight and capable of removing chromatic aberration.