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US6124883A
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TV observation system for endoscopes
Assignee: Olympus Corp
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Filing: 1997-02-25
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Granted: 2000-09-26
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Expires: 2017-02-25
Abstract
Abstract A TV observation system for endoscopes has an illumination system including a light source for emitting light to illuminate an object and a light transmitting section for transmitting the light from the light source to the distal end of an endoscope. The light transmitting section is constructed with a single fiber and satisfies a condition: Φ.sub.1 >Φ.sub.2 where Φ 1 is the area of the entrance end of the single fiber and Φ 2 is the area of the exit end thereof.
Inventors
- 👤 Takayuki Suzuki
- 👤 Makoto Tomioka
- 👤 Yumi Ikeda
- 👤 Akira Hasegawa
- 👤 Mitsujiro Konno
- 👤 Shinya Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:57
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00163; A61B1/00165
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
151 words
A TV observation system for endoscopes having an illumination system, at least, comprising: a light source optical system having a light emitting section for emitting light and a condensing optical system for concentrating the light from the light emitting section on a light-receiving surface; and a light transmitting section for receiving the light from said light source optical system to transmit the light to a distal end of an endoscope, the condensing optical system of said light source optical system being defined by a magnification of 1×, wherein said light source optical system is defined by 1.0≦D.sub.1 /L≦1.5 0.575≦|f/D.sub.2 |≦1.0 where D 1 is an outer diameter of the light-receiving surface, L is a dimension of the light emitting section, f is a focal length of a front lens unit constituting the condensing optical system, and D 2 is an outer diameter of each of lenses constituting the condensing optical system.
Claim 2
Dependent Claim
151 words
A TV observation system for endoscopes having an illumination system, at least, comprising: a light source optical system having a light emitting section for emitting light and a condensing optical system for concentrating the light from the light emitting section on a light-receiving surface; and a light transmitting section for receiving the light from said light source optical system to transmit the light to a distal end of an endoscope, the condensing optical system of said light source optical system being defined by a magnification of 1×, wherein said light source optical system is defined by 1.0≦D.sub.1 /L≦1.5 0.575≦|f/D.sub.2 |≦1.0 where D 1 is an outer diameter of the light-receiving surface, L is a dimension of the light emitting section, f is a focal length of a front lens unit constituting the condensing optical system, and D 2 is an outer diameter of each of lenses constituting the condensing optical system.
Claim 3
Dependent Claim
15 words
A TV observation system for endoscopes according to claim 1, wherein said endoscopes are cystoscopes.
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) | 2003-09-26 | 2004-03-27 | 2004-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-09-26 | 2008-03-27 | 2008-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-09-26 | 2012-03-27 | 2012-09-26 | $7700.00 | Window Closed / Lapsed |