Optical head with adjustable output power detector

Details Optical head with adjustable output power detector Optical head with adjustable output power detector

1993-01-07

1996-05-07

Epps, Georgia Y.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369116, G11B 700

Patent

active

055153500

ABSTRACT:
An optical head having a semiconductor laser that emits a laser beam, an optical system that leads the laser beam emitted by the semiconductor laser onto a recording medium, an optical power detector that detects the power of the laser beam emitted by the semiconductor laser, and a variable resistor that adjusts the detection output released by the optical power detector. The adjustment performed by the variable resistor enables to suppress readily the fluctuation of the detection output occurring with every optical head manufactured.

REFERENCES:
patent: 4675749 (1987-06-01), Banno et al.
patent: 4685097 (1987-08-01), van der Put
patent: 4698797 (1987-10-01), Komatsu
patent: 4706236 (1987-11-01), Yoda
patent: 4785443 (1988-11-01), Minami et al.

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