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:
Feb. 13, 2007
Filed:
May. 10, 2002
Dae-sik Kim, Gyeonggi-do, KR;
Kun-ho Cho, Gyeonggi-do, KR;
Soon-kyo Hong, Seoul, KR;
Young-il Kim, Gyeonggi-do, KR;
Kwang-sup Im, Seoul, KR;
Ho-cheol Lee, Gyeonggi-do, KR;
Dae-hwan Kim, Seoul, KR;
Dae-sik Kim, Gyeonggi-do, KR;
Kun-ho Cho, Gyeonggi-do, KR;
Soon-kyo Hong, Seoul, KR;
Young-il Kim, Gyeonggi-do, KR;
Kwang-sup Im, Seoul, KR;
Ho-cheol Lee, Gyeonggi-do, KR;
Dae-hwan Kim, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
An optical pickup including a many-sided reflection prism formed as a single body with a plurality of reflection faces to guide a light beam incident through a transmission face in a horizontal direction perpendicular to a height direction by reducing a size of the light beam in the height direction, by using a difference in angles between the reflection faces, and to reflect the guided light beam in the height direction by one reflection face of an angle less than 45° with respect to the horizontal direction. By using the many-sided reflection prism, the height of an optical system can be reduced regardless of the wavelength used without reducing light beam size. Thereby, slim-sized optical pickups can be implemented.