US4701674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical beam modulation and deflection device
Assignee: Fujifilm Holdings Corp
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Filing: 1987-03-23
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Granted: 1987-10-20
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Expires: 2007-03-23
Abstract
Abstract An optical beam modulation and deflection device having a semiconductor laser mounted on a rotator which employs a rotating transformer so as to supply electrical power to the rotator in a contactless manner.
Inventors
- 👤 Hiroshi Oono
- 👤 Shigenori Oosaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:52
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10861; G06K7/10871; G02; G02B; G02B26/00; G02B26/08; G02B26/10; G02B26/12; G02B26/121; G02B26/127; G06K15/00; G06K15/02; G06K15/12; G06K15/1204; H; H04; H04N; H04N1/00; H04N1/04; H04N1/06; H04N1/0607; H04N1/0621; H04N1/0628; H04N1/0664; H04N1/12; H04N1/126; H04N2201/00; H04N2201/04; H04N2201/0402; H04N2201/0424
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
162 words
An optical beam modulation and deflection device comprising a rotator rotatably supported on a base to rotate about a rotational axis, a light source mounted on said rotator to be directed outwardly of said rotator, and a condenser optical system mounted on said rotator to rotate therewith, said condenser optical system being mounted on the rotator in a manner such that the orientation of said condenser optical system relative to said light source remains fixed during rotation, said condenser optical system focusing the light emitted from the source outwardly of said rotator, a rotating transformer the primary side of which is fixed on said base and the secondary side of which is fixed on said rotator for supplying electric power for driving said light source in a contactless manner through said rotating transformer, and a light beam scanning device for recording or reading out an image by scanning a medium placed near said rotator with a light beam from said light source.
Claim 2
Dependent Claim
162 words
An optical beam modulation and deflection device comprising a rotator rotatably supported on a base to rotate about a rotational axis, a light source mounted on said rotator to be directed outwardly of said rotator, and a condenser optical system mounted on said rotator to rotate therewith, said condenser optical system being mounted on the rotator in a manner such that the orientation of said condenser optical system relative to said light source remains fixed during rotation, said condenser optical system focusing the light emitted from the source outwardly of said rotator, a rotating transformer the primary side of which is fixed on said base and the secondary side of which is fixed on said rotator for supplying electric power for driving said light source in a contactless manner through said rotating transformer, and a light beam scanning device for recording or reading out an image by scanning a medium placed near said rotator with a light beam from said light source.
Claim 3
Dependent Claim
19 words
An optical beam modulation and deflection device according to claim 1, wherein the rotating transformer includes ferrite pot cores.
Claim 4
Dependent Claim
23 words
An optical beam modulation and deflection device according to claim 1, wherein a high-frequency electric power signal is applied to the rotating transformer.
Claim 5
Dependent Claim
37 words
The optical beam modulation and deflection device according to claim 1 wherein said light source and said condenser optical system are oriented on said rotator to direct light emitted from said light source along said rotational axis.
Claim 6
Dependent Claim
38 words
The optical beam modulation and deflection device according to claim 1 wherein said light source and said condenser optical system are oriented on said rotator to direct light emitted from said light source away from said rotational axis.
Claim 7
Dependent Claim
36 words
The optical beam modulation and deflection device according to claim 1 wherein said light source and said condenser optical system are oriented on said rotator to direct light emitted from said light source along parallel lines.
Claim 8
Dependent Claim
19 words
The optical beam modulation and deflection device according to claim 1 wherein said condenser optical system includes cylindrical lenses.
Claim 9
Dependent Claim
48 words
The optical beam modulation and deflection device according to claim 1 further including a movable recording medium located adjacent to said rotator to receive light from said condenser lens system and means for moving said recording medium transverely of the direction of light emitted from said light source.
Claim 10
Dependent Claim
45 words
The optical beam modulation and deflection device according to claim 1 further including a plurality of light sources mounted on said rotator and a plurality of condenser optical systems mounted on said rotator, each condenser optical system being associated with one of said light sources.
Claim 11
Dependent Claim
23 words
An optical beam modulation and deflection device according to claim 2, wherein a high-frequency electric power signal is applied to the rotating transformer.
References Cited (Backward Citations)
US834496A
Cited
US2270517A
Cited
US2242812A
Cited
US2935316A
Cited
US3316447A
Cited
US3850515A
Cited
US3739088A
Cited
US3909670A
Cited
US4055058A
Cited
US4005330A
Cited
US4236086A
Cited
US4337412A
Cited
US4360908A
Cited
US4546463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-19 | 1991-04-20 | 1991-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-19 | 1995-04-20 | 1995-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-19 | 1999-04-20 | 1999-10-20 | $7700.00 | Window Closed / Lapsed |