Light emitting device and information processing apparatus

Details Light emitting device and information processing apparatus Light emitting device and information processing apparatus

2007-06-12

2007-06-12

Wellington, Andrea (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044230, C369S044370, C369S122000

Reexamination Certificate

active

11112243

ABSTRACT:
A light emitting device according to the present invention includes: a first light source for emitting light having a first wavelength; and a second light source for emitting light having a second wavelength which is different from the first wavelength, wherein the first light source and the second light source are arranged in the same housing, and a relationship of θh1>θh2is satisfied, where θh1denotes an angle (full-width-half-maximum) of radiation of the light emitted from the first light source in the horizontal direction, and θh2denotes an angle (full-width-half-maximum) of radiation of the light emitted from the second light source in the horizontal direction.

REFERENCES:
patent: 5986998 (1999-11-01), Park
patent: 6347103 (2002-02-01), Song et al.
patent: 6480456 (2002-11-01), Kawamura et al.
patent: 6618420 (2003-09-01), Gen-Ei et al.
patent: 6728193 (2004-04-01), Uchizaki et al.
patent: 7079474 (2006-07-01), Takahashi
patent: 7116627 (2006-10-01), Yoo et al.

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