Patent US5027144A successfully refreshed from Google Patents.
US5027144A
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Lens changer for cameras
Assignee: Fujinon Corp
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Filing: 1990-06-28
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Granted: 1991-06-25
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Expires: 2010-06-28
Abstract
Abstract Described herein is a lens changer for camera, which is provided with a unitary lens body integrally and contiguously formed with a main lens portion and at least one replacement lens portion of a different type in optical characteristics from the main lens portion, the lens body being movable across the optical axis of a camera to locate either the main lens portion or the replacement lens portion in a predetermined lens position forward of an image forming plane of the camera.
Inventors
- 👤 Kazunori Ohno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:58
CPC Classifications
G; G02; G02B; G02B15/00; G02B15/02; G02B15/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
77 words
A lens changer for a camera, comprising: a unitary lens body integrally and contiguously formed with a main lens portion and at least one replacement lens portion of a different type in optical characteristics from said main lens portion, said lens body being movable across the optical axis of a camera to locate either said main lens portion or said replacement lens portion in a predetermined lens position forward of an image forming plane of said camera.
Claim 2
Dependent Claim
77 words
A lens changer for a camera, comprising: a unitary lens body integrally and contiguously formed with a main lens portion and at least one replacement lens portion of a different type in optical characteristics from said main lens portion, said lens body being movable across the optical axis of a camera to locate either said main lens portion or said replacement lens portion in a predetermined lens position forward of an image forming plane of said camera.
Claim 3
Dependent Claim
28 words
A lens changer as defined in claim 1, wherein said main lens portion is shaped to constitute a standard lens, wide angle lens, telephoto lens or macro lens.
Claim 4
Dependent Claim
30 words
A lens changer as defined in claim 1, wherein said replacement lens portion is shaped to constitute at least a standard lens, wide angle lens, telephoto lens or macro lens.
Claim 5
Dependent Claim
38 words
A lens changer as defined in claim 1, wherein said lens body is rotatable to set one of said main and replacement lens portions in said lens position while holding the other lens portion in a receded position.
Claim 6
Dependent Claim
32 words
A lens changer as defined in claim 1, wherein said main and replacement lens portions are shaped to have a common radius of curvature on the object side of said lens body.
Claim 7
Dependent Claim
32 words
A lens changer as defined in claim 1, wherein said main and replacement lens portions are shaped to have a common radius of curvature on the imaging side of said lens body.
Claim 8
Dependent Claim
20 words
A lens changer as defined in claim 1, wherein said body is formed by molding plastic into a unitary structure.
Claim 9
Dependent Claim
20 words
A lens changer as defined in claim 1, further comprising stops separately provided for said main and replacement lens portions.
Claim 10
Dependent Claim
21 words
A lens changer as defined in claim 1, further comprising a stop provided commonly for said main and replacement lens portions.
Claim 11
Dependent Claim
18 words
A lens changer as defined in claim 1, wherein said lens body is mounted on a disposable camera.
References Cited (Backward Citations)
US4038673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-24 | 1994-12-24 | 1995-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-24 | 1998-12-24 | 1999-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-24 | 2002-12-24 | 2003-06-25 | $7700.00 | Window Closed / Lapsed |