Toshiba Samsung Storage Technology Korea Corporation

Ju-hee Im

Ki-bok Kim

Ji-sun Ahn

Jin-ho Jeong

Seung-man Han

Chan-ik Lee

Provided are an optical pickup and an optical information storage system including the same. The optical pickup includes a diffracting element that splits incident light into main light and a plurality of sub light. The diffracting element has at least three regions including first through third regions. A second region is disposed between a first region and a third region and has a phase difference from the first and third regions. The optical pickup detects a tracking error signal by using light diffracted by the diffracting element.

Optical pickup and optical information storage system including the same

Provided is an optical pickup device that compensates for an aberration caused by a beam splitter. When a beam of light is reflected from a disc and proceeds towards a beam splitter, the beam splitter is designed to allow the reflected beam to pass therethrough. However, the beam splitter can cause an astigmatism in the reflected beam due to diffraction. According to various aspects herein, an optical pickup device may include a compensation device that generates an inverse astigmatism to compensate for the astigmatism generated by the beam splitter.

Growing community of inventors

Suwon-si, South Korea

Ju-hee Im