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US4877955A
Expired / Lapsed
US
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Optical unit with detachably-mounted optics to maintain hermetic sealing of the unit
Assignee: Fujifilm Holdings Corp
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Filing: 1988-04-20
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Granted: 1989-10-31
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Expires: 2008-04-20
Abstract
Abstract In an optical unit for use in a light beam scanning apparatus, a housing that covers optical elements of which the optical system of said apparatus is composed is provided, and the optical elements that need occasional replacement are grouped into blocks as small units which are adapted to be individually remountable in the process of replacement without destroying the hermeticity of the interior of the housing. Being so designed, the optical unit enables the necessary optical elements to be sufficiently dustproof to ensure reliable operation of the light beam scanning apparatus.
Inventors
- 👤 Shuji Ono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:48
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/02815; H04N1/0282; H04N1/0283; G; G02; G02B; G02B26/00; G02B26/08; G02B26/10; H04N1/04; H04N1/113; H04N1/1135
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
54 words
An optical unit for use in a light beam scanning apparatus, said optical unit comprising a housing and an optical element accommodated in an interior of said housing, said optical element being detachably mounted in said housing from an outside of said housing such that hermeticity is maintained in said interior of said housing.
Claim 2
Dependent Claim
54 words
An optical unit for use in a light beam scanning apparatus, said optical unit comprising a housing and an optical element accommodated in an interior of said housing, said optical element being detachably mounted in said housing from an outside of said housing such that hermeticity is maintained in said interior of said housing.
Claim 3
Dependent Claim
56 words
An optical unit according to claim 1 wherein said optical unit comprises means for outputting a one-dimensionally deflected light beam, and wherein said light beam scanning apparatus scans a stimulable phosphor sheet in two-dimensional way by illumination with said one-dimensionally deflected light beam, so as to read stimulated emission in association with radiation-produced image related information.
Claim 4
Dependent Claim
46 words
An optical unit according to claim 1 wherein said optical unit comprises means for outputting a one-dimensionally deflected light beam, and wherein said light beam scanning apparatus records radiation-produced image related information on a photographic material by scanning it two-dimmensionally with said one-dimensionally deflected light beam.
Claim 5
Dependent Claim
42 words
An optical unit according to claim 1 wherein said optical element comprises at least one member selected from the group consisting of a laser light source, an optical filter, a beam expander, a reflector mirror, a light deflector, and a scanning lens.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-30 | 1993-05-01 | 1993-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-30 | 1997-05-01 | 1997-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-30 | 2001-05-01 | 2001-10-31 | $7700.00 | Window Closed / Lapsed |