EP0116896A2
Expired / Lapsed
EP
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Method of making a hologram lens and optical information processing equipment comprising such a hologram lens
Assignee: Koki Holdings Co Ltd
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Filing: 1984-02-08
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Granted: —
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Expires: 2004-02-08
Abstract
Abstract An optical system and an optical information processing equipment utilizing the same are disclosed. The optical system comprises a laser diode (1) and a hologram lens (5, 11, 51, 93) has an interference fringe prepared by the interference of a beam having substantially the same intensity distribution and/or phase characteristic as that of a laser beam emitted from the laser diode with a beam having a desired characteristic. The laser beam from the laser diode is irradiated on the hologram lens so that its characteristic is converted into the desired characteristic.
Inventors
- 👤 Kimio Tatsuno
- 👤 Susumu Saito
- 👤 Akira Arimoto
- 👤 Keiji Kataoka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 12:15
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/09; G02B19/00; G02B19/0004; G02B19/0009; G02B19/0014; G02B19/0033; G02B19/0047; G02B19/0052; G02B27/0025; G02B27/0938; G02B27/0944; G02B5/00; G02B5/32
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
42 words
An optical system for semiconductor lasers comprising: a laser diode (1); and a hologram lens (5, 11, 51, 93) on which a laser beam emitted from said laser diode is irradiated, said hologram lens converting a characteristic inherent to the laser beam.
Claim 2
Dependent Claim
42 words
An optical system for semiconductor lasers comprising: a laser diode (1); and a hologram lens (5, 11, 51, 93) on which a laser beam emitted from said laser diode is irradiated, said hologram lens converting a characteristic inherent to the laser beam.
Claim 3
Dependent Claim
37 words
An optical system according to Claim 1, wherein said hologram lens (5, 11, 51) has an interference fringe prepared by the interference of a beam having an'elliptical intensity distribution with a beam having a non-elliptical intensity distribution.
Claim 4
Dependent Claim
66 words
An optical system according to Claim 2, wherein said hologram lens is inclined, in a plane containing an axis of a narrower intensity distribution of the laser beam emitted from said laser diode, by an angle (8) which is made by an optical axis of said laser beam having the elliptical intensity distribution and an optical axis of said laser beam having the non-elliptical intensity distribution.
Claim 5
Dependent Claim
58 words
An optical system according to Claim 2, wherein said hologram lens is inclined, in a plane parallel to the junction plane of said laser diode, by an angle (8) which is made by an optical axis of said laser beam having the elliptical intensity distribution and an optical axis of said laser beam having the non-elliptical intensity distribution.
Claim 6
Dependent Claim
34 words
An optical system according to Claim 1, wherein said hologram lens (93) has an interference fringe prepared by the interference of a beam (101) having an aberration with a beam (91) free from aberration.
Claim 7
Dependent Claim
56 words
An optical system for semiconductor lasers comprising: a laser diode (1); and a hologram lens (5, 11, 51) having an interference fringe prepared by the interference of a beam having an elliptical intensity distribution with a beam having a non-elliptical intensity distribution, a laser beam emitted from said laser diode being incident to said hologram lens.
Claim 8
Dependent Claim
56 words
An optical system for semiconductor lasers comprising: a laser diode (1); and a hologram lens (5, 11, 51) having an interference fringe prepared by the interference of a beam having an elliptical intensity distribution with a beam having a non-elliptical intensity distribution, a laser beam emitted from said laser diode being incident to said hologram lens.
Claim 9
Dependent Claim
66 words
An optical system according to Claim 6, wherein said hologram lens is inclined, in a plane containing an axis of a narrower intensity distribution of the laser beam emitted from said laser diode, by an angle (8) which is made by an optical axis of said laser beam having the elliptical intensity distribution and an optical axis of said laser beam having the non-elliptical intensity distribution.
Claim 10
Dependent Claim
52 words
An optical system for semiconductor lasers comprising: a laser diode (71) and a hologram lens (93) having an interference fringe prepared by the interference of a beam (101) having an aberration with a beam (91) free from aberration, a laser beam emitted from said laser diode being incident to said hologram lens.
Claim 11
Dependent Claim
52 words
An optical system for semiconductor lasers comprising: a laser diode (71) and a hologram lens (93) having an interference fringe prepared by the interference of a beam (101) having an aberration with a beam (91) free from aberration, a laser beam emitted from said laser diode being incident to said hologram lens.
Claim 12
Dependent Claim
107 words
In an optical information processing equipment comprising a laser diode (1), a recording medium (17) and an optical system interposed between said laser diode and recording medium for directing a laser beam emitted from said laser diode to said recording medium, said optical system comprising a hologram lens (5, 93) having an interference fringe prepared by the interference of a beam having substantially the same characteristic as that of the laser beam emitted from said laser diode with a beam having a desired characteristic, said laser beam from said laser diode being incident to said hologram lens so that the characteristic of said laser beam is converted.
Claim 13
Dependent Claim
107 words
In an optical information processing equipment comprising a laser diode (1), a recording medium (17) and an optical system interposed between said laser diode and recording medium for directing a laser beam emitted from said laser diode to said recording medium, said optical system comprising a hologram lens (5, 93) having an interference fringe prepared by the interference of a beam having substantially the same characteristic as that of the laser beam emitted from said laser diode with a beam having a desired characteristic, said laser beam from said laser diode being incident to said hologram lens so that the characteristic of said laser beam is converted.
Claim 14
Dependent Claim
72 words
An optical information processing equipment according to Claim 9, wherein said laser diode emits a laser beam having an elliptical intensity distribution, and said hologram lens (5) has an interference fringe prepared by the interference of a beam having an elliptical intensity distribution with a beam having a non-elliptical intensity distribution, whereby said laser beam is irradiated on said recording medium in the form of a beam having a non-elliptical intensity distribution.
Claim 15
Dependent Claim
69 words
ll. An optical information processing equipment according to Claim 9, wherein said laser diode emits a laser beam having an aberration, and said hologram lens (93) has an interference fringe prepared by the interference of a beam (101) having an aberration with a beam (91) free from aberration, whereby said laser beam is irradiated on said recording medium in the form of a beam being substantially free from aberration.
Claim 16
Dependent Claim
56 words
An optical information processing equipment according to Claim 9, wherein said hologram lens (93) has an interference fringe prepared by the interference of a beam (101) having an aberration with a beam (91) free from aberration; whereby a reflected beam from said recording medium is passed through said hologram lens and directed to a photodetector (73).
Claim 17
Dependent Claim
24 words
An optical information processing equipment according to Claim 12, wherein said hologram lens (93) is added with the function to collect said laser beam.
References Cited (Backward Citations)
No citation records indexed.
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