US4053756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illumination light-source device for an endoscope or the like
Assignee: Individual
•
Filing: 1975-12-23
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Granted: 1977-10-11
•
Expires: 1995-12-23
Abstract
Abstract A light source for an endoscope includes a lamp for providing conventional illumination, a cold mirror for condensing the conventional illumination onto a light incident surface of a light guide, and a flash discharge tube or lamp for providing flash illumination for photography. The conventional lamp has a sealed tip portion which is adjacent a reflective coating on a part of the outer periphery of the flash discharge tube.
Inventors
- 👤 Nagashige Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:21
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4298; A; A61; A61B; A61B1/00; A61B1/06; A61B1/0661; A61B1/0669; A61B1/07; G02B6/0001; G02B6/0005; G02B6/0006
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
168 words
A light source for an endoscope or the like for producing viewing light and photographing light and for directing said light to a light incident surface of a light guide, said light source comprising, A first lamp for producing conventional viewing illumination, said lamp having a sealed tip portion pointing in the light path direction towards the said light incident surface, a curved mirror positioned in back of said first lamp for condensing the light from said first lamp onto said light incident surface, a flash discharge tube having a pair of electrodes and a housing, a reflective coating on a semicircular portion of said housing to condense the light from said flash discharge tube, said flash discharge tube being positioned to place the outer surface of said reflective coating just in front of said tip to provide minimum interference with said condensed light from said curved mirror and to direct said condensed flash light from the internal surface of said coated reflector onto said light incident surface.
Claim 2
Dependent Claim
168 words
A light source for an endoscope or the like for producing viewing light and photographing light and for directing said light to a light incident surface of a light guide, said light source comprising, A first lamp for producing conventional viewing illumination, said lamp having a sealed tip portion pointing in the light path direction towards the said light incident surface, a curved mirror positioned in back of said first lamp for condensing the light from said first lamp onto said light incident surface, a flash discharge tube having a pair of electrodes and a housing, a reflective coating on a semicircular portion of said housing to condense the light from said flash discharge tube, said flash discharge tube being positioned to place the outer surface of said reflective coating just in front of said tip to provide minimum interference with said condensed light from said curved mirror and to direct said condensed flash light from the internal surface of said coated reflector onto said light incident surface.
Claim 3
Dependent Claim
15 words
The light source of claim 1 wherein said first lamp is a tungsten halogen lamp.
Claim 4
Dependent Claim
15 words
The light source of claim 1 wherein said discharge tube is a xenon discharge tube.
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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) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |