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:
Sep. 12, 1995
Filed:
Sep. 02, 1994
Toshihiko Yoshida, Nara, JP;
Osamu Yamamoto, Nara, JP;
Saburo Yamamoto, Nara, JP;
Shohichi Kato, Yamatokoriyama, JP;
Masumi Nakamichi, Tenri, JP;
Toshimasa Hamada, Kashihara, JP;
Sadayoshi Matsui, Tenri, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A hyper-resolution optical device which can focus a beam of light to a diameter less than the diffraction limit. The optical device has an optical system disposed on a transmissive substrate. One component in the optical system is a hyper-resolution optical component which passes or reflects light and which has a central portion which does not pass or reflect light, respectively. The hyper-resolution optical component can be integrated with the transmissive substrate. Such optical devices are particularly suitable for optical pick-up devices, laser printers, sensors.