Optical system having a convex surface for accessing a...

Details Optical system having a convex surface for accessing a... Optical system having a convex surface for accessing a...

2006-05-23

2006-05-23

Miller, Brian E. (Department: 2652)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

Reexamination Certificate

active

07050381

ABSTRACT:
An optical system for accessing a storage medium. The system combines two kinds of laser diode, abandons some unnecessary optical elements used in the prior art, and further uses a Penta prism to fold the optical path. Moreover, the optical system uses a CZBO prism to locate the two laser diodes abreast of each other. Thus, the space of the optical system is reduced, and the optical system is more compact.

REFERENCES:
patent: 4734905 (1988-03-01), Kuwayama et al.
patent: 5311496 (1994-05-01), Whitehead
patent: 5327417 (1994-07-01), Tanaka et al.
patent: 5526338 (1996-06-01), Hasman et al.
patent: 5541908 (1996-07-01), Hsu et al.
patent: 5677899 (1997-10-01), Getreuer
patent: 5708633 (1998-01-01), Hollen et al.

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