Patent Number: 7,821,887

Title: Method and system for adjusting tilt of an optical pickup head

Abstract: A method is used for adjusting a tilt of an optical pickup head. The method includes: identifying initial coordinates of the first static spot, the second static spot, and the dynamic spot in an image generated from three reflected light beams from the optical pickup head; turning one of the adjustable screws a predetermined calibrated rotation angle; recording current coordinates of the first static spot, the second static spot, and the dynamic spot in another image generated from three reflected light beams from the optical pickup head; calculating a total needed rotation angle of the one adjustable screw according to the initial coordinates, the predetermined calibrated rotation angle, and the current coordinates; and turning the one adjustable screw a remaining rotation angle computed by subtracting the predetermined calibrated rotation angle from the total needed rotation angle. An adjusting system is also disclosed.

Inventors: Wang; Chun-Chieh (Taipei Hsien, TW)

Assignee: Hon Hai Precision Industry Co., Ltd.

International Classification: G11B 7/00 (20060101)

Expiration Date: 2018-10-26 0:00:00