Patent EP0168261A2 successfully refreshed from Google Patents.
EP0168261A2
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EP
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Connector for high energy beam
Assignee: Mitsubishi Cable Industries Ltd
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Filing: 1985-07-12
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Granted: —
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Expires: 2005-07-12
Abstract
Abstract A connector for high energy beam is provided with a sleeve (43) fitted on an optical fiber (1a) and having an optical fiber support portion (43f) of an inner diameter about equal to a diameter of the optical fiber and a larger diameter portion positioned ahead of the optical fiber support portion and having an inner diameter larger than a diameter of the optical fiber. Thus, a gap (43c,d) is formed around the optical fiber and in a proper length from the end face of the optical fiber, the optical fiber support portion being formed of a heat resistant inorganic substance of the melting point at a temperature of 1500°C or more, for example, a transparent substance, such as sapphire, or an opaque substance, such as aluminium oxide or the so-called fine ceramics. The connector of the invention constructed as above avoids burning, melting and diffusion of metallic material, and breakage of optical fiber when in use.
Inventors
- 👤 Eiji Iri
- 👤 Takeshi Satake
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 23:23
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/36; G02B6/38; G02B6/3807; G02B6/381; G02B6/3813; G02B6/26; G02B6/32; G02B6/389; G02B6/3894
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
138 words
A connector for high energy beam, which is provided at the end of optical fiber on which said high energy beam is to be incident, characterized by providing a sleeve which is fitted on the end of said optical fiber and has a larger diameter portion of an inner diameter larger than a diameter of said optical fiber so that a gap is formed between the inner periphery of said sleeve and the outer periphery of said optical fiber and in a desired axial length from the end face of said optical fiber and an optical fiber support portion of an inner diameter about equal to a diameter of said optical fiber, at least said optical fiber support portion being formed of a heat resistant inorganic substance of the melting point at a temperature of 1500°C or more.
Claim 2
Dependent Claim
138 words
A connector for high energy beam, which is provided at the end of optical fiber on which said high energy beam is to be incident, characterized by providing a sleeve which is fitted on the end of said optical fiber and has a larger diameter portion of an inner diameter larger than a diameter of said optical fiber so that a gap is formed between the inner periphery of said sleeve and the outer periphery of said optical fiber and in a desired axial length from the end face of said optical fiber and an optical fiber support portion of an inner diameter about equal to a diameter of said optical fiber, at least said optical fiber support portion being formed of a heat resistant inorganic substance of the melting point at a temperature of 1500°C or more.
Claim 3
Dependent Claim
63 words
A connector for high energy beam as set forth in Claim 1, wherein said heat resistant inorganic substance forming said optical fiber support portion at said sleeve is a transparent or a translucent inorganic substance which has a refractive index of 1.452 or more and transmits therethrough more than 5 % of quantity of the incident light in a 1 mm transmission distance.
Claim 4
Dependent Claim
44 words
A connector for high energy beam as set forth in Claim 2, wherein an end face of said optical fiber support portion at the high energy beam outgoing side is roughened-surface-processed so as to make the high energy.beam irregularly reflect from said end face.
Claim 5
Dependent Claim
46 words
A connector for high energy beam as set forth in Claim 2, wherein the larger diameter portion of said sleeve is formed at the inner peripheral surface of a heat resistant inorganic substance of the melting point at a temperature of 1500 0 C or more.
Claim 6
Dependent Claim
43 words
A connector for high energy beam as set forth in Claim 2, wherein whole of said sleeve including said optical fiber support portion is integrally formed of a heat resistant inorganic substance of the melting point at a temperature of 1500°C or more.
Claim 7
Dependent Claim
45 words
A connector for high energy beam as set forth in Claim 2, wherein said optical fiber support portion is tapered at an end face thereof facing said gap like a trancated cone whose diameter at the end side face of said optical fiber is smallest.
Claim 8
Dependent Claim
76 words
A connector for high energy beam as set forth in Claim 6, wherein an angle 6 of inclination of said inclining face satisfies the following equation: θ ≦ 90° - arc tan (a/b), where a: a half of a difference between the inner diameter of said sleeve and the diameter of said optical fiber, and b: a distance from the utmost end face of said sleeve to the end face of said optical fiber support portion.
Claim 9
Dependent Claim
54 words
A connector for high energy beam as set forth in Claim 1, 2, 4, 5 or 6, wherein said heat resistant inorganic substance is selected from a group of transparent or translucent inorganic substances consisting of sapphire (Al 2 O 3 ), rutile (TiO 2 ), strontium titanate (SrTiO 3 ) and diamond (C).
Claim 10
Dependent Claim
55 words
A connector for high energy beam as set forth in Claim 1, wherein said heat resistant inorganic substance forming said optical fiber support portion at said sleeve is a opaque or a translucent inorganic substance which does not transmit more than 5 % of quantity of the incident light in a 1 mm transmission distance.
Claim 11
Dependent Claim
44 words
A connector for high energy beam as set forth in Claim 9, wherein the larger diameter portion of said sleeve is formed at the inner peripheral surface of a heat resistant inorganic substance of the melting point at a temperature of 1500°C or more.
Claim 12
Dependent Claim
43 words
A connector for high energy beam as set forth in Claim 9, wherein whole of said sleeve including said optical fibre support portion is integrally formed of a heat resistant inorganic substance of the melting point at a temperature of 1500°C or more.
Claim 13
Dependent Claim
45 words
A connector for high energy beam as set forth in Claim 11, wherein said optical fibre support portion is tapered at an end face thereof facing said gap like a trancated cone whose diameter at the end side face of said optical fiber is smallest.
Claim 14
Dependent Claim
76 words
A connector for high energy beam as set forth in Claim 14, wherein an angle 6 of inclination of said inclined face satisfies the following equation: e ≦ 90° - arc tan (a/b) where a: a half of a difference between the inner diameter of said sleeve and the diameter of said optical fiber, and b: a distance from the utmost end face of said sleeve to the end face of said optical fiber support portion.
Claim 15
Dependent Claim
77 words
A connector for high energy beam as set forth in any preceding Claim, wherein said heat resistant inorganic substance is oxide, preferably being selected from a group of substances of A1203, BaO, BeO, CaO, CeO, Cr203, CoO, Cb 2 O 5 , Ga203, HfO 2 , La 2 O 3 , LiO 2 , ThO 2 , TiO 2 , UO 2 , Zr02, CaO.HfO 2 , Ta 2 O 5 , V205 and SnO 2 .
Claim 16
Dependent Claim
86 words
A connector for high energy beam as set forth in any of claims 1 to 13, wherein said heat resistant inorganic substance is silicate, preferably being selected from a group of substances consisting of BaO.SiO 2 , BaO.ZrO 2 . Si0 2 , 2BeO.SiO, 2 CaO.SiO 2 , 2CaO.Al 2 O 3 .SiO 2 , MgO.SiO 2 , 2MgO.SiO 2 , ZnO.ZrO 2 .SiO 2 , ZrO 2 .SiO 2 , Al 2 O 3 .SiO 2 , and BaO.Al 2 O 3 .SiO 2 .
Claim 17
Dependent Claim
81 words
A connector for high energy beam as set forth in any of claims 1 to 13, wherein said heat resistant inorganic substance is aluminate, preferably being selected from a group of substances consisting of 3CaO.5Al 2 O 3 , Li 2 O.Al 2 O 3 , Na 2 O.Al 2 O 3 , Ti 2 O.Al 2 O 3 , 3CaO. 2Na 2 O.5Al 2 O 3 , TiO 2 .Al 2 O 3 , and CaO.Al 2 O 3 .
Claim 18
Dependent Claim
44 words
A connector for high energy beam as set forth in any of claims 1 to 13, wherein said heat resistant inorganic substances is titanate, preferably being selected from a group of substances consisting of 3BeO.TiO 2 , CaO.TiO 2 , and 2MgO.Ti0 2 .
Claim 19
Dependent Claim
51 words
A connector for high energy beam as set forth in any of claims 1 to 13, wherein said heat resistant inorganic substance is nitride, preferably being selected from a group of substances consisting of Ba 3 N 2 , BN , HfN, TIN, TiN, A1N and Si 3 N 4 .
Claim 20
Dependent Claim
37 words
A connector for high energy beam as set forth in any of claims 1 to 13, wherein said heat resistant inorganic substance is boride, preferably being selected from a group of substances consisting of NB and HfB.
Claim 21
Dependent Claim
39 words
A connector for high energy beam as set forth in any of claims 1 to 13, wherein said heat resistant inorganic substance is carbide, preferably being selected from a group of substances consisting of CbC, HfC, TaC, and SiC.
Claim 22
Dependent Claim
49 words
A connector for high energy beam as set forth in any of claims 1 to 13, wherein said heat resistant inorganic substance is zirconate, preferably being selected from a group of substances consisting of Th0 2 . ZrO 2 , BaO.ZrO 2 , CaO.Zr0 2 and MgO.ZrO 2 .
Claim 23
Dependent Claim
57 words
A connector for high energy beam as set forth in any of claims 1 to 13, wherein said heat resistant inorganic substance is phosphate, preferably being selected from a group of substances consisting of AlPO 4 , Ca 3 (PO 4 ) 2 , CaF 2 .3CaBO 8 , and 5CaO.SiO 2 P 2 O 5 .
Claim 24
Dependent Claim
72 words
A connector for high energy beam as set forth in any of claims 1 to 13, wherein said heat resistant inorganic substance is spinel, preferably being selected from a group of substances consisting of BaO. Al 2 O 3' CaO.Al 2 O 3 , MgO.Al 2 O 3 , ZnO.Al 2 O 3 , MgO.Cr 2 O 3 , ZnO.Fe 2 O 3 , and Al 2 O 3 , M gO.
References Cited (Backward Citations)
No citation records indexed.
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