Optical signal recorder employing a transducer having an adjusta

Details Optical signal recorder employing a transducer having an adjusta Optical signal recorder employing a transducer having an adjusta

1984-06-28

1986-01-07

Arnold, Bruce Y.

Supports

Pipe or cable

Extending through plate

248487, 250201, 350633, 350642, 369 45, 369110, G02B 514, G01D 1514

Patent

active

045630585

ABSTRACT:
A transducer or optical head arrangement for an optical disk recorder includes an adjustably mounted dichroic beam combiner. The adjustments are in two degrees of freedom about a pivot point located near a light beam entry point. The write light source has its emitted beam reflected to the optical disk through a minimum of optical elements. The readback or sensing elements are optically coupled to the optical disk via a light path extending through the beam combiner entering at about the pivot point. The sensing elements include a second light source, an optical detector and a beam splitter. The two light sources are shown as semiconductive laser-emitting different frequency light beams. A four-screw, adjustably-mounted aperture plate retains a partial spherical dichroic beam combiner in a cavity of an optical support.

REFERENCES:
patent: 3357268 (1967-12-01), Richter
patent: 3642353 (1972-02-01), Field
patent: 3813170 (1972-06-01), Sears
patent: 4059841 (1977-11-01), Bricot et al.
patent: 4085423 (1978-04-01), Tsunoda
patent: 4165921 (1979-08-01), Kirsch
patent: 4186991 (1980-02-01), Koide et al.
patent: 4225873 (1980-09-01), Winslow
patent: 4298248 (1981-11-01), Lapp
patent: 4339170 (1982-07-01), Winzer

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