US4812866A
Expired / Lapsed
US
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Photographic film package
Assignee: Fujifilm Holdings Corp
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Filing: 1988-02-08
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Granted: 1989-03-14
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Expires: 2008-02-08
Abstract
Abstract A photographic film package has a taking lens, an exposure member, and a rolled film, with their associated elements, contained in a light-tight film container as a unit. The taking lens consists of either an aspherical or a spherical single-element lens preferably made of plastic material and is designed to have a focal length f and a lens speed F defined by the following conditions: F≧f.sup.2 /150 F≧34.3-0.75f F≦16
Inventors
- 👤 Seimei Ushiro
- 👤 Hiroshi Ohmura
- 👤 Michio Cho
- 👤 Tsutomu Tanaka
- 👤 Yasuhiko Tanaka
- 👤 Seiji Asano
- 👤 Kazunori Ohno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:20
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/02; G03B19/04; G02; G02B; G02B3/00; G02B3/02; G02B3/04; G03C; G03C3/00; G03B2219/00; G03B2219/02; G03B2219/04; G03B2219/045
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
60 words
A photographic film package in which a 35 mm-size photographic film, a taking lens system, and an exposure member, with their associated elements, are incorporated in a light-tight film casing as a unit, said taking lens system consisting of a single-element lens having a focal length f (mm) and an F-number defined by the following conditions: F≧f.sup.2 /150 F≧34.3-0.75f F≦16
Claim 2
Dependent Claim
60 words
A photographic film package in which a 35 mm-size photographic film, a taking lens system, and an exposure member, with their associated elements, are incorporated in a light-tight film casing as a unit, said taking lens system consisting of a single-element lens having a focal length f (mm) and an F-number defined by the following conditions: F≧f.sup.2 /150 F≧34.3-0.75f F≦16
Claim 3
Dependent Claim
21 words
A photographic film package as defined in claim 1, wherein said focal length f is defined by the following condition: 33≦f≦40
Claim 4
Dependent Claim
19 words
A photographic film package as defined in claim 1, wherein said single-element lens is made of a plastic material.
Claim 5
Dependent Claim
25 words
A photographic film package as defined in claim 3, wherein a front part of said light-tight film casing is made of a transparent plastic material.
Claim 6
Dependent Claim
26 words
A photographic film package as defined in claim 4, wherein said single-element lens is formed integrally with said transparent front part of said light-tight film casing.
Claim 7
Dependent Claim
20 words
A photographic film package as defined in claim 5, wherein said light-tight film package is encased in an outer casing.
Claim 8
Dependent Claim
20 words
A photographic film package as defined in claim 1, wherein said photographic film is disposed in a concave focal plane.
Claim 9
Dependent Claim
67 words
A photographic film package in which a 35 mm-size photographic film, a taking lens system, and an exposure member, with their associated elements, are incorporated in a light-tight film casing as a unit, said taking lens system consisting of a single-element lens having at least one aspherical lens surface and a focal length f (mm) and an F-number defined by the following conditions: F≧f.sup.2 /150 F≧34.3-0.75f F≦16
Claim 10
Dependent Claim
67 words
A photographic film package in which a 35 mm-size photographic film, a taking lens system, and an exposure member, with their associated elements, are incorporated in a light-tight film casing as a unit, said taking lens system consisting of a single-element lens having at least one aspherical lens surface and a focal length f (mm) and an F-number defined by the following conditions: F≧f.sup.2 /150 F≧34.3-0.75f F≦16
Claim 11
Dependent Claim
16 words
A photographic film package as defined in claim 8, wherein said aspherical lens surface faces forward.
Claim 12
Dependent Claim
20 words
A photographic film package as defined in claim 8, wherein said photographic film is disposed in a flat focal plane.
Claim 13
Dependent Claim
85 words
A photographic film package as defined in claim 8, wherein when said aspherical surface is defined by the following equation: ##EQU2## where Z is the surface sag at a distance Y from the axis of said single-element taking lens C is a coefficient and the radius of curvature of a reference spherical surface is defined by 1/C, and k, a 1 , a 2 , a 3 and a 4 are aspherical coefficients and said sag Z at a distance Y=0.3/C satisfies the following condition:
Claim 14
Dependent Claim
2 words
-0. 02<Z<0
Claim 15
Dependent Claim
2 words
-0. 02<Z<0
Claim 16
Dependent Claim
96 words
A photographic film package in which a photographic roll film and exposure means including a taking lens system and an exposure member, with their associated elements, are incorporated in a light-tight film casing as a unit, said film casing comprising: a main body section mounting said exposure means thereon and receiving said photographic film therein; a back cover section attached to said main body section to protect said photographic film light tightly; and a transparent front cover section provided with a single-element lens formed integrally therewith and attached to the front of said main body section.
Claim 17
Dependent Claim
96 words
A photographic film package in which a photographic roll film and exposure means including a taking lens system and an exposure member, with their associated elements, are incorporated in a light-tight film casing as a unit, said film casing comprising: a main body section mounting said exposure means thereon and receiving said photographic film therein; a back cover section attached to said main body section to protect said photographic film light tightly; and a transparent front cover section provided with a single-element lens formed integrally therewith and attached to the front of said main body section.
Claim 18
Dependent Claim
21 words
A photographic film package as defined in claim 12, wherein said single-element lens is an element of said taking lens system.
Claim 19
Dependent Claim
17 words
A photographic film package as defined in claim 12, wherein said single-element lens is a finder lens.
Claim 20
Dependent Claim
21 words
A photographic film package as defined in claim 12, wherein said transparent front cover section is made of a plastic material.
Claim 21
Dependent Claim
34 words
A photographic film package as defined in claim 12, wherein said main body section and back cover section are made of a plastic material containing lead so as to shield the film against X-radiation.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |