Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – In combination with or also constituting light responsive...
Patent
1995-04-27
1997-03-04
Mintel, William
Active solid-state devices (e.g., transistors, solid-state diode
Incoherent light emitter structure
In combination with or also constituting light responsive...
257 84, 257 85, 257 98, 257432, 372 50, 372 99, 372101, 372102, 369109, 369110, 369122, H01L 2715, H01L 3112, H01L 31153, H01L 3300
Patent
active
056082339
ABSTRACT:
An optical device for detecting a magneto-optical signal can be simplified and miniaturized in arrangement. An optical device for detecting a magneto-optical signal includes an optical element (101) in which a light-emitting portion (4) and a light-receiving portion (5) are closely disposed on a common substrate and in which reflected-back light obtained from a magneto-optical medium (34) after light emitted from the light-emitting portion (4) was reflected on the magneto-optical medium (34) is detected at a position near confocal position by the light-receiving portion (5). The light-receiving portion (5) on the optical element (1) has a light-receiving surface inclined relative to the optical axis of the reflected-back light formed thereon so that the light-receiving portion has a polarization selective transmittance function on its surface. Thus, the reflected-back light from the magneto-optical medium (34) can be received and detected by the light-receiving portion (5) on the optical element (101).
REFERENCES:
patent: 5233595 (1993-08-01), Kawakubo
patent: 5349210 (1994-09-01), Ackley et al.
patent: 5352919 (1994-10-01), Takano
patent: 5406543 (1995-04-01), Kobayashi et al.
No Author, "Vertically Emitting Diode Laser with Integrated Front-Beam Monitor Photodiode," IBM Technical Disclosure Bulletin, vol. 32, No. 8A, Jan. 1990, pp. 149-150.
Doi Masato
Matsuda Osamu
Narui Hironobu
Sahara Kenji
Mintel William
Sony Corporation
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