Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
76 words
A magneto-optical head assembly for a reflection type magneto-optical memory apparatus which uses a laser beam for recording, retrieving, and erasing data on a recording medium comprised of a vertical, magnetic, and anisotropic thin film, wherein the light beam emitted from said head assembly is guided to a fixed position on said recording medium by a light detection apparatus for receiving a control signal, and by a separate light detection apparatus for receiving a data signal.
Claim 2
Dependent Claim
76 words
A magneto-optical head assembly for a reflection type magneto-optical memory apparatus which uses a laser beam for recording, retrieving, and erasing data on a recording medium comprised of a vertical, magnetic, and anisotropic thin film, wherein the light beam emitted from said head assembly is guided to a fixed position on said recording medium by a light detection apparatus for receiving a control signal, and by a separate light detection apparatus for receiving a data signal.
Claim 3
Dependent Claim
62 words
A magneto-optical head assembly according to claim 1 wherein the data beam reflected from the abovementioned recording medium is divided into a beam-for control use and a beam for data use, while at the same time a beam splitter, possessing deflection characteristics by which it can increase the magneto-optical rotation angle, is positioned in the light path of the said light beam.
Claim 4
Dependent Claim
49 words
A magneto-optical head assembly according to claim 1 wherein an analyzer which detects the data beam reflected from the recording medium emite a beam which is guided in one direction to the light detection apparatus used for data, and in another direction to the light detection apparatus used for.control.
Claim 5
Dependent Claim
52 words
A magneto-optical head assembly according to claim 1 wherein a beam splitter, to which has been applied a multicoated thin film dielectric body capable of increasing the Kerr rotation angle of the laser beam reflected from the recording medium, is positioned in the optical system through which the abovementioned laser beam passes.
Claim 6
Dependent Claim
77 words
A magneto-optical head assembly according to claim 4 wherein the multicoated thin film dielectric body applied to the inclined surface of the prism of the said beam splitter provides said surface with optical characteristics so that the energy transmission factor T(sub)p of the P polarized light has a value such that 1 > T(sub)p > 0.5, and the energy reflection factor R(sub)s of the S polarized light has a value such that 1 > R(sub)s > 0.5.