Device for processing optical data

Claim 3

A device as defined in claim 1 wherein said lens means causes the projected light to emerge obliquely upward from the other surface of the substrate.

Claim 4

A device as defined in claim 1 wherein said lens means causes the projected light to emerge perpendicularly to the other surface of the substrate and upwardly from the surface.

Claim 5

A device as defined in claim 1 wherein said lens means and said light receiving means are provided on the same substrate.

Claim 6

A device as defined in claim 1 comprising a first substrate provided with the lens means and a second substrate provided with the light receiving means.

Claim 7

A device as defined in claim 1 wherein said light source is a semiconductor laser fixed to the other surface of the substrate at the position where the semiconductor laser faces to said lens means.

Claim 8

A device as defined in claim 1 wherein said light receiving means comprises a semiconductor chip formed with a plural photoconductive elements and affixed to the substrate.

Claim 9

A device as defined in claim 1 wherein said lens means is formed integrally with the substrate.

Claim 10

A device as defined in claim 1 wherein said lens means causes the projected light to emerge upward as separated into three light beams and focuses the separated light beams two-dimensionally at three different positions.

Claim 13

A device as defined in claim 10 wherein said light receiving means detects the light reflected obliquely from above.

Claim 14

A device as defined in claim 10 wherein said light receiving means detects the light reflected perpendicularly to the surface of the substrate from above.

Claim 15

A device as defined in claim 10 further comprising: a focusing drive mechanism for adjusting the position of the substrate upward or downward, and a tracking drive mechanism for adjusting the position of the substrate laterally.

Claim 16

A device as defined in claim 10 wherein said lens means causes the projected light to emerge substantially vertically upward as separated into three light beams and focuses the separated light beams two-dimensionally at three different positions.

Claim 17

A device as defined in claim 10 wherein said substrate is provided with two optical systems each comprising a light source; lens means and light receiving means.

Claim 18

A device as defined in claim 10 further comprising an optical fiber one end of which is fixed to the substrate, wherein the light emitted from the light source disposed separately from the substrate is led to the lens means through the optical fiber.

Claim 19

A device as defined in claim 10 further comprising lens means provided on said substrate for focusing the reflected light wherein said light receiving means detects the focused light.

Claim 20

A device as defined in claim 10 wherein said lens means comprises first lens means for converting the diverging light emitted from said light source into a beam of a parallel rays and second lens means for causing the collimated light to emerge from the substrate and focusing the emergent light.

Claim 21

A device as defined in claim 10 comprising a first substrate provided with the lens means and a second substrate provided with the light receiving means.

Claim 24

An optical data processing device for writing data in a photomagnetic disc memory and/or reading data therefrom comprising; a first optical system for projecting a light spot focused on,- the photomagnetic disc memory and for receiving the light reflected therefrom, for writing and/or reading data, and a second optical system for detecting errors to cause the projected light spot to follow the track of the photomagnetic disc memory.

Claim 25

An optical data processing device for writing data in a photomagnetic disc memory and/or reading data therefrom comprising; a first optical system for projecting a light spot focused on,- the photomagnetic disc memory and for receiving the light reflected therefrom, for writing and/or reading data, and a second optical system for detecting errors to cause the projected light spot to follow the track of the photomagnetic disc memory.

Claim 26

A device as defined in claim 21 further comprising a substrate (11) provided with the first and second optical systems, the substrate being transparent for the light applied to the optical systems, wherein the first optical system comprises; a light source (75) for projecting the light onto one surface of the substrate substantially perpendicularly to the surface, lens means (76) provided on the substrate for causing the projected light to emerge obliquely upward from the other surface of the substrate and focusing the emergent light two-dimensionally, light receiving means (60) provided with at least two photoconductive elements (6la, 62a) for detecting the light reflected obliquely from above, and analyzers (61, 62) disposed on the photoconductive elements so that the principal axes thereof make a right angle with each other, and wherein the second optical system comprises; a light source (12) for projecting the light onto one surface of the substrate substantially perpendicularly to the surface, lens means (13) provided on the substrate for causing the projected light to emerge obliquely upward from the other surface of the substrate and focusing the emergent light two-dimensionally, and means (20) for receiving the light reflected obliquely from above.

Claim 27

A device as defined in claim 21 wherein, said first optical system comprises; an optical waveguide (91) formed on a substrate (11), a light source (75) for the laser beam to be admitted into the waveguide, lens means (96, 97) provided on the waveguide for causing the beam propagating through the waveguide to emerge obliquely upward and focusing the emergent beam two-dimensionally, light receiving means (60) provided with at least two photoconductive elements (61a, 62a) for detecting the light reflected obliquely from above, and aniyzers (61, 62) disposed on the photoconductive elements so that the principal axes thereof make a right angle with each other, and said second optical system comprises; an optical waveguide (91) formed on a substrate (11), a light source (12) for the laser beam to be admitted into the waveguide, lens means (92, 93) provided on the waveguide for causing the beam propagating through the waveguide to emerge obliquely upward and focusing the emergent beam two-dimensionally, means (20) for receiving the beam reflected obliquely from above.