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:
Dec. 16, 2008
Filed:
Jun. 03, 2005
Wen-hsin Sun, Tucheng, TW;
Wen-Hsin Sun, Tucheng, TW;
Hon Hai Precision Industry Co., Ltd., Tu-Cheng, Taipei Hsien, TW;
Abstract
An optical pickup system includes a first light source emitting first light beams with a first wavelength, a second light source emits second light beams with a second wavelength greater than the first wavelength, a third light source emits third light beams with a third wavelength greater than the second wavelength, a composite prism comprising a first prism facing the first and second light sources, a second prism facing the third light source, and a third prism for receiving the first, second and third light beams from the first and second prisms, the first prism has a surface facing the first and second light sources, the surface defines first and second regions, the second region has an aspherical surface to compensate aberration of the second light beams, a collimating lens and objective lens disposed in a common optical path for transmitting the three light beams from the composite prism.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile