Patent US5273051A successfully refreshed from Google Patents.
US5036834A
Expired / Lapsed
US
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Illuminating light introducing device for endoscope
Assignee: Pentax Corp
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Filing: 1990-05-18
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Granted: 1991-08-06
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Expires: 2010-05-18
Abstract
Abstract A device for introducing illuminating light that is emitted from a light source to an illuminating light guide fiber bundle associated with an endoscope. The device has an incident end face of the light guide fiber bundle that is disposed at a position where the light from the light source is converged, and a lens which is disposed in close proximity to the incident end face of the light guide fiber bundle. That lens has a convex surface which faces the light source and a concave surface which faces the light guide fiber bundle. Accordingly, the illuminating light is refracted by the concave surface of the lens so as to enter the light guide fiber bundle at a small angle to the optical axis. Thus, the illuminating light is transmitted through the light guide fiber bundle with a considerably small number of times of reflection.
Inventors
- 👤 Akira Sugiyama
- 👤 Rensuke Adachi
- 👤 Hiroshi Sano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:31
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00112; A61B1/00117; A61B1/00064; A61B1/00071; A61B1/0008; A61B1/00096; A61B1/06; A61B1/07
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
100 words
A device for introducing illuminating light that is emitted from a light source to an illuminating light guide fiber bundle associated with an endoscope, comprising: a flat incident end face of said light guide fiber bundle; and a lens which is disposed in close proximity to said flat incident end face of said light guide fiber bundle, said lens having a convex surface which faces said light source and a concave surface which faces said flat incident end face of said light guide fiber bundle, wherein a space is formed between said concave surface and said flat incident end face.
Claim 2
Independent Claim
100 words
A device for introducing illuminating light that is emitted from a light source to an illuminating light guide fiber bundle associated with an endoscope, comprising: a flat incident end face of said light guide fiber bundle; and a lens which is disposed in close proximity to said flat incident end face of said light guide fiber bundle, said lens having a convex surface which faces said light source and a concave surface which faces said flat incident end face of said light guide fiber bundle, wherein a space is formed between said concave surface and said flat incident end face.
Claim 3
Dependent Claim
34 words
An illuminating light introducing device according to claim 1, wherein said incident end face of said light guide fiber bundle is disposed at a position where the light from said light source is converged.
Claim 4
Dependent Claim
36 words
An illuminating light introducing device according to claim 1, wherein the diameter of the concave surface of said lens is not smaller than the diameter of the incident end face of said light guide fiber bundle.
Claim 5
Dependent Claim
23 words
An illuminating light introducing device according to claim 1, wherein the convex and concave surfaces of said lens have the same curvature radius.
Claim 6
Dependent Claim
30 words
An illuminating light introducing device according to claim 1, wherein a waterproof sealing means is provided between the incident end face of said light guide fiber bundle and said lens.
Claim 7
Dependent Claim
127 words
An illuminating light introducing device for an endoscope, which is provided in a connector that is detachably connected to a light source device, to apply light that is emitted from a light source lamp provided in said light source device to an illuminating light guide fiber bundle associated with said endoscope, comprising: a flat incident end face of said light guide fiber bundle; and a lens which is disposed in close proximity to said incident end face of said light guide fiber bundle, said lens having a convex surface which faces said light source lamp and a concave surface which faces said flat incident end face of said light guide fiber bundle, wherein a space is formed between said concave surface and said flat incident end face.
Claim 8
Dependent Claim
127 words
An illuminating light introducing device for an endoscope, which is provided in a connector that is detachably connected to a light source device, to apply light that is emitted from a light source lamp provided in said light source device to an illuminating light guide fiber bundle associated with said endoscope, comprising: a flat incident end face of said light guide fiber bundle; and a lens which is disposed in close proximity to said incident end face of said light guide fiber bundle, said lens having a convex surface which faces said light source lamp and a concave surface which faces said flat incident end face of said light guide fiber bundle, wherein a space is formed between said concave surface and said flat incident end face.
Claim 9
Dependent Claim
35 words
An illuminating light introducing device according to claim 6, wherein said incident end face of said light guide fiber bundle is disposed at a position where the light from said light source lamp is converged.
Claim 10
Dependent Claim
36 words
An illuminating light introducing device according to claim 6, wherein the incident end face of said light guide fiber bundle and said lens are disposed in the tip of a rod that projects from said connector.
Claim 11
Independent Claim
86 words
A device for introducing illuminating light to an illuminating light guide fiber bundle, comprising: a flat incident end face of said light guide fiber a lens which is disposed in close proximity to said incident end face of said light guide fiber bundle, said lens having a convex surface which faces a light source and a concave surface which faces said flat incident end face of said light guide fiber bundle, wherein a space is formed between said concave surface and said flat incident end face.
Claim 12
Independent Claim
86 words
A device for introducing illuminating light to an illuminating light guide fiber bundle, comprising: a flat incident end face of said light guide fiber a lens which is disposed in close proximity to said incident end face of said light guide fiber bundle, said lens having a convex surface which faces a light source and a concave surface which faces said flat incident end face of said light guide fiber bundle, wherein a space is formed between said concave surface and said flat incident end face.
Claim 13
Dependent Claim
34 words
An illuminating light introducing device according to claim 9, wherein said incident end face of said light guide fiber bundle is disposed at a position where the light from said light source is converged.
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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) | 1994-08-05 | 1995-02-04 | 1995-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-05 | 1999-02-04 | 1999-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-05 | 2003-02-04 | 2003-08-06 | $7700.00 | Window Closed / Lapsed |