C
Chong-Sam Chung
Researcher at Samsung
Publications - 174
Citations - 1091
Chong-Sam Chung is an academic researcher from Samsung. The author has contributed to research in topics: Lens (optics) & Signal. The author has an hindex of 15, co-authored 174 publications receiving 1091 citations.
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Patent
Compatible optical pickup
TL;DR: In this paper, an optical pickup which is compatible with at least one high density recording medium that uses a blue-violet beam and at least 1 lower-density recording medium was proposed.
Patent
Lens device comprising light blocking means and an optical pickup apparatus using the lens device
Chul-woo Lee,Dong-ho Shin,Kyung-hwa Rim,Chong-Sam Chung,Kun-ho Cho,Pyong-yong Seong,Jang-Hoon Yoo,Yong-hoon Lee +7 more
TL;DR: In this article, an objective lens is provided along a light path facing a disc and having a predetermined effective diameter, and light controlling means along the light path for controlling the light in an intermediate region between near and far axes of an incident light beam, thus providing a simplified and inexpensive device for using discs of differing thickness in a single disc drive.
Patent
Compatible optical pick-up apparatus for recording and reproducing information from recording media having different formats
TL;DR: An optical pick-up apparatus for recording and reproducing information from recording media using a first, second, and third light source to emit light beams having various wavelengths corresponding to a first and second recording media, respectively, is described in this article.
Patent
Optical pickup having an objective lens compatible with a plurality of optical disk formats
TL;DR: In this article, an optical pickup compatible with a plurality of optical recording media each using light of a different wavelength is proposed, which includes at least one light source, an objective lens having a function of focusing light emitted from the light source into the optimal light spot on an information recording surface on an optical recording surface of one of the plurality of the optical recording medium, and a light detector to detect light transmitted through the objective lens after being reflected from the information recording surfaces on which the light spot is formed.
Patent
Phase compensator and compatible optical pickup using the phase compensator
TL;DR: In this paper, the authors propose a compatible optical pickup for recording and/or reproducing information on/from multiple kinds of optical discs having different thicknesses by selectively using source lights of respective different wavelengths corresponding to a kind of disc and using a common objective lens.