EP0025969A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A structure including a light-receiving end portion of an endoscope light guide
Assignee: Olympus Corp
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Filing: 1980-09-16
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Granted: —
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Expires: 2000-09-16
Abstract
Abstract A light-receiving end structure of an endoscope light guide comprises the illumination light-receiving end plane (15) formed on an illumination light-receiving end portion (11a) of the light guide (11), an adhesive (50) applied to the illumination light-receiving end portion (11a) to bond together optical fibers constituting the end portion (11a), a transparent heat-resistant disc member (25) mounted on the illumination light-receiving end plane (15), and a metal support (21) surrounding the light-receiving end portion (11a) and the disc member (25) in a liquid-tight state. The heat generated by light beams irradiated on the light-receiving end plane (15) is conducted through the disc member (25) to the support (21) and then released into the open air. Therefore, the light-receiving end portion (11a) is not exposed to a high temperature. Accordingly, the light-receiving end structure is prominently increased in effective life.
Inventors
- 👤 Tetsumaru Kubota
- 👤 Kenji Koyata
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 15:52
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/06; A61B1/07; A61B1/00064; A61B1/00071; A61B1/0008; A61B1/00096; A61B1/12; A61B1/128; G; G02; G02B; G02B23/00; G02B23/24; G02B23/2407; G02B23/2461; G02B23/2469; A61B1/00101
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
120 words
A structure of a light-receiving end portion of an endoscope light guide including a bundle of optical fibers comprising an end part (19) of the bundle of the optical fibers having an end plane (15) receiving light, an adhesive (50) applied to the end part (19) for fixing the optical fibers together, characterised by further comprising a support (21) made of a metal of good heat conductivity, and provided with a bore (21a) into which said end part (19) of the bundle of the optical fibers inserted and also with an annular hole (24) open to said bore (21a) and the outside, and a transparent heat-resistant disc member (25) fitted into said annular hole (24) in a liquid tight state.
Claim 2
Dependent Claim
120 words
A structure of a light-receiving end portion of an endoscope light guide including a bundle of optical fibers comprising an end part (19) of the bundle of the optical fibers having an end plane (15) receiving light, an adhesive (50) applied to the end part (19) for fixing the optical fibers together, characterised by further comprising a support (21) made of a metal of good heat conductivity, and provided with a bore (21a) into which said end part (19) of the bundle of the optical fibers inserted and also with an annular hole (24) open to said bore (21a) and the outside, and a transparent heat-resistant disc member (25) fitted into said annular hole (24) in a liquid tight state.
Claim 3
Dependent Claim
20 words
The structure according to claim 1, characterised in that heat absorbing means (38, 40) is provided at the disc member.
Claim 4
Dependent Claim
26 words
The structure according to claim 2, characterised in that said heat absorbing means is fine wires (38) of highly heat-conductive metal transversing the disc member (25).
Claim 5
Dependent Claim
20 words
The structure according to claim 3, characterised in that the fine metal wires (38) are arranged in a mesh form.
Claim 6
Dependent Claim
20 words
The structure according to claim 3, characterised in that said fine metal wires (38) are arranged in a striped pattern.
Claim 7
Dependent Claim
21 words
The structure according to claim 2, characterised in that said heat absorbing means (38) is disposed in the disc member (25).
Claim 8
Dependent Claim
39 words
The structure according to any one of claims 2 to 5, characterised in that said heat absorbing means is a heat absorbing filter (40) disposed between the disc member (25) and the end plane (15) of the optical fibers.
Claim 9
Dependent Claim
21 words
The structure according to claim 1 or claim 2, characterised in that said disc member (25) is made of heat-resistant glass.
Claim 10
Dependent Claim
27 words
The structure according to claim 8, characterised in that the heat-resistant glass member is prepared from one selected from the group consisting of quartz and boron glass.
Claim 11
Dependent Claim
68 words
The structure according to claim 1, characterised in that the support (21) comprises a support body (28) which is provided with the bore (21a), and a head memeber (31) which is provided with the annular hole (24); and screw threaded engagement means (30, 32, 35, 37) is provided between the distal end portion of the support body (28) and the rear end portion of the head member (31).
Claim 12
Dependent Claim
24 words
The structure according to claim 10, characterised in that said screw threaded engagement means (30, 32, 35, 37) is provided with a sealing agent.
Claim 13
Dependent Claim
58 words
The structure according to any one of the preceding claims, characterised in that a tubular fixing member (20) made of highly heat conductive metal is provided between said bore (21a) and said end part (19) of the optical fiber; and a set screw (23) is threadedly inserted across the support (21) to securely hold the fixing member (20).
Claim 14
Dependent Claim
23 words
The structure according to claim 12, characterised in that a sealing agent (51) is applied between the set screw (23) and support (21).
Claim 15
Dependent Claim
30 words
The structure according to any one of the preceding claims, characterised in that the support (21) is provided with an annular holding portion (27) for holding the disc member (25).
Claim 16
Dependent Claim
19 words
The structure according to claim 14, characterised in that said annular holding portion (27) is an annular caulked portion.
Claim 17
Dependent Claim
16 words
The structure according to claim 13, wherein said annular holding portion (27) is a soldered element.
References Cited (Backward Citations)
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