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:
Jan. 18, 2005
Filed:
Jul. 15, 2003
Yuan-chin Lee, Hsinchu Hsien, TW;
Jau-jiu Ju, Hsinchu Hsien, TW;
Tzuan-ren Jeng, Hsinchu Hsien, TW;
Wen-yih Liao, Hsinchu Hsien, TW;
Chi-lone Chang, Hsinchu Hsien, TW;
Jyh-shong Ju, Hsinchu Hsien, TW;
Kuo-chi Chiu, Hsinchu Hsien, TW;
Chih-yuan Wu, Hsinchu Hsien, TW;
Yuan-Chin Lee, Hsinchu Hsien, TW;
Jau-Jiu Ju, Hsinchu Hsien, TW;
Tzuan-Ren Jeng, Hsinchu Hsien, TW;
Wen-Yih Liao, Hsinchu Hsien, TW;
Chi-Lone Chang, Hsinchu Hsien, TW;
Jyh-Shong Ju, Hsinchu Hsien, TW;
Kuo-Chi Chiu, Hsinchu Hsien, TW;
Chih-Yuan Wu, Hsinchu Hsien, TW;
Abstract
A near-field optical head objective lens that can read and write high-density data on an optical disc is disclosed. On a surface where an incident beam converges by the near-field optical head objective lens, a film that can produce surface plasmon effect is coated. As the incident beam hits the material and produces the surface plasmon, a micro aperture is generated to minimize the diameter of the light spot, thereby increasing the data capacity stored in the optical disc.