Patent US1143567A successfully refreshed from Google Patents.
Patent US5757559A successfully refreshed from Google Patents.
US5757559A
Expired / Lapsed
US
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Lens holding device
Assignee: Pentax Corp
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Filing: 1995-06-30
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Granted: 1998-05-26
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Expires: 2015-06-30
Abstract
Abstract A glass lens and a plastic lens are secured such that the glass lens is retained in a predetermined position with reference to a lens barrel and against a reference surface provided in the lens barrel. The plastic lens is held by a resilient ring-shaped portion of the lens barrel against the glass lens, thus locating the plastic lens in a predetermined position with reference to both the lens barrel and the glass lens. The glass lens is retained against the reference surface by a retaining member positioned opposite the reference surface.
Inventors
- 👤 Hiroshi Nomura
- 👤 Takamitsu Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:21
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/02; G02B7/022; G02B7/021; G02B7/026
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
101 words
A lens holding device, comprising: a lens frame, said lens frame having a unitary elastic portion and a reference surface formed on said lens frame; a retaining member, provided on said lens frame; a first lens, supported by said lens frame and held against said reference surface by said retaining member, in a predetermined position with reference to said lens frame; and a second lens, supported by said lens frame and elastically held against said first lens, by said unitary elastic portion of said lens frame, in a predetermined position with reference to said lens frame and to said first lens.
Claim 2
Dependent Claim
101 words
A lens holding device, comprising: a lens frame, said lens frame having a unitary elastic portion and a reference surface formed on said lens frame; a retaining member, provided on said lens frame; a first lens, supported by said lens frame and held against said reference surface by said retaining member, in a predetermined position with reference to said lens frame; and a second lens, supported by said lens frame and elastically held against said first lens, by said unitary elastic portion of said lens frame, in a predetermined position with reference to said lens frame and to said first lens.
Claim 3
Dependent Claim
51 words
The lens holding device according to claim 1, wherein said second lens comprises a resin plastic lens and said elastic portion of said lens frame elastically holds said second lens against said first lens with a force of less than a predetermined limit of mechanical deformation, for obtaining acceptable optical performance.
Claim 4
Dependent Claim
16 words
The lens holding device according to claim 2, wherein said first lens is a glass lens.
Claim 5
Dependent Claim
17 words
The lens holding deice according to claim 1, wherein said elastic portion comprises a resilient ring-shaped member.
Claim 6
Dependent Claim
42 words
The lens holding device according to claim 1, wherein said retaining member is unitarily formed with said lens frame, and said first lens is substantially rigidly held against said reference surface by plastically deforming said lens frame to form said retaining member.
Claim 7
Dependent Claim
30 words
The lens holding device according to claim 5, wherein said lens frame is formed from resin, and said lens frame is plastically deformed under heat to form said retaining member.
Claim 8
Dependent Claim
79 words
The lens holding device according to claim 1, wherein said lens frame has a stepped bore with first and second inner diameter portions, first and second lens mounting portions being defined in said lens frame, said first lens mounting portion comprising a portion of said stepped bore of larger diameter than said second lens mounting portion; and wherein said reference surface is positioned between said first and second lens mounting portions facing substantially towards said first lens mounting portion.
Claim 9
Dependent Claim
44 words
The lens holding device according to claim 7 wherein said first lens has a larger diameter than said second lens, and said first lens is supported in said first lens mounting portion while said second lens is supported in said second lens mounting portion.
Claim 10
Dependent Claim
54 words
The lens holding device according to claim 8, wherein said elastic portion is formed in said lens frame on a side of said second lens mounting portion opposite said reference surface, and said retaining member is provided to said lens frame on a side of said first lens mounting portion opposite said reference surfaces.
Claim 11
Dependent Claim
31 words
The lens holding device according to claim 9, wherein said elastic portion comprises a resilient ring-shaped member of a smaller diameter than said second lens mounting portion and said second lens.
Claim 12
Dependent Claim
32 words
The lens holding device according to claim 9, wherein said retaining member comprises a substantially rigid ring-shaped member of a smaller diameter than said first lens mounting portion and said first lens.
Claim 13
Dependent Claim
52 words
The lens holding device according to claim 9, wherein a stepped portion, having a diameter between that of said first and second lens mounting portions, is located between said first and second lens mounting portions, and said reference surface comprising an annular projection on said stepped portion extending towards said first lens.
Claim 14
Dependent Claim
83 words
A lens holding device, comprising: a lens frame, said lens frame having a unitary elastic portion and a reference surface formed on said lens frame; a glass lens, having a reference surface formed thereon; a resin lens; and a retaining member, provided to said lens frame, wherein said glass lens is held against said reference surface of said lens frame by said retaining member, and said resin lens is elastically held against said reference surface of said glass lens by said elastic portion.
Claim 15
Dependent Claim
83 words
A lens holding device, comprising: a lens frame, said lens frame having a unitary elastic portion and a reference surface formed on said lens frame; a glass lens, having a reference surface formed thereon; a resin lens; and a retaining member, provided to said lens frame, wherein said glass lens is held against said reference surface of said lens frame by said retaining member, and said resin lens is elastically held against said reference surface of said glass lens by said elastic portion.
Claim 16
Dependent Claim
21 words
The lens holding device according to claim 13, wherein said elastic portion comprises a ring-shaped resilient portion of said lens frame.
Claim 17
Dependent Claim
21 words
The lens holding device according to claim 14, wherein said glass lens is of a larger diameter than said plastic lens.
Claim 18
Dependent Claim
25 words
The lens holding device according to claim 13, wherein said retaining member substantially rigidly holds said first lens in abutting rotation to said reference surface.
Claim 19
Dependent Claim
41 words
The lens holding device according to claim 16, wherein said retaining member is unitarily formed with said lens frame, and said first lens is rigidly held against said reference surface by plastically deforming said lens frame to form said retaining member.
Claim 20
Dependent Claim
30 words
The lens holding device according to claim 17, wherein said lens frame is formed from resin, and said lens frame is plastically deformed under heat to form said retaining member.
Claim 21
Dependent Claim
136 words
A lens holding device, comprising: a lens frame, having first and second lens mounting portions formed thereon; a reference surface substantially facing said first lens mounting portion and formed between said first and second lens mounting portions; and an elastic ring formed in said lens frame on a side of said second lens mounting portion and opposite said first lens mounting portion; a first lens, provided in said first lens mounting portion and in abutting relation to said reference surface; a second lens, provided in said second lens mounting portion and resiliently held in abutting relation to said first lens by said elastic ring; and a retaining portion, provided on a side of said first lens mounting portion opposite said second lens mounting portion, and holding said first lens in abutting relation to said reference surface.
Claim 22
Dependent Claim
136 words
A lens holding device, comprising: a lens frame, having first and second lens mounting portions formed thereon; a reference surface substantially facing said first lens mounting portion and formed between said first and second lens mounting portions; and an elastic ring formed in said lens frame on a side of said second lens mounting portion and opposite said first lens mounting portion; a first lens, provided in said first lens mounting portion and in abutting relation to said reference surface; a second lens, provided in said second lens mounting portion and resiliently held in abutting relation to said first lens by said elastic ring; and a retaining portion, provided on a side of said first lens mounting portion opposite said second lens mounting portion, and holding said first lens in abutting relation to said reference surface.
Claim 23
Dependent Claim
38 words
The lens holding device according to claim 19, wherein said first lens is of a larger diameter than said second lens, and said first lens mounting portion is of larger internal diameter than said second lens mounting portion.
Claim 24
Dependent Claim
25 words
The lens holding device according to claim 20, wherein said retaining portion substantially rigidly holds said first lens in abutting relation to said reference surface.
Claim 25
Dependent Claim
40 words
The lens holding device according to claim 21, wherein said retaining portion is unitarily formed with said lens frame, and said first lens is held against said reference surface by plastically deforming said lens frame to form said retaining portion.
Claim 26
Dependent Claim
30 words
The lens holding device according to claim 22, wherein said lens frame is formed from resin, and said lens frame is plastically deformed under heat to form said retaining portion.
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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) | 2001-05-25 | 2001-11-24 | 2002-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-25 | 2005-11-24 | 2006-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-25 | 2009-11-24 | 2010-05-26 | $7700.00 | Window Closed / Lapsed |