Patent US4378019A successfully refreshed from Google Patents.
Patent US4067937A successfully refreshed from Google Patents.
US4067937A
Expired / Lapsed
US
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Method for forming a light transmission glass fiber equipped with an optical lens
Assignee: Toshiba Corp
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Filing: 1976-07-07
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Granted: 1978-01-10
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Expires: 1996-07-07
Abstract
Abstract An optical lens equipped glass fiber is formed by bringing at least one end of a glass fiber into contact with an optical lens forming liquid-like material with the liquid-like material deposited onto the end of the glass fiber in a manner to have a curvature due to its surface tension and, after lifting it up, allowing the deposit to stand for solidification so as to obtain an optical lens on the end of the glass fiber.
Inventors
- 👤 Yoichi Unno
- 👤 Naoto Motegi
- 👤 Takao Ito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:34
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4202; G02B6/4203
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
91 words
A method for manufacturing a light transmission glass fiber, comprising a first step of bringing at least one end of a glass fiber body into contact with an optical lens forming hardenable adhesive liquid-like organic compound material; and a second step of withdrawing the one end of the glass fiber body to cause the liquid-like material to adhere to the one end of the glass fiber body with a curvature due to its surface tension before hardening, thereby forming an optical lens on the one end of the glass fiber body.
Claim 2
Independent Claim
91 words
A method for manufacturing a light transmission glass fiber, comprising a first step of bringing at least one end of a glass fiber body into contact with an optical lens forming hardenable adhesive liquid-like organic compound material; and a second step of withdrawing the one end of the glass fiber body to cause the liquid-like material to adhere to the one end of the glass fiber body with a curvature due to its surface tension before hardening, thereby forming an optical lens on the one end of the glass fiber body.
Claim 3
Dependent Claim
26 words
A method according to claim 1, in which said liquid-like material to be attached is placed in the form of a film on a flat plate.
Claim 4
Dependent Claim
17 words
A method according to claim 1, in which said glass fiber body is a single glass fiber.
Claim 5
Dependent Claim
18 words
A method according to claim 1, in which said glass fiber body is a bundle of glass fibers.
Claim 6
Dependent Claim
19 words
A method according to claim 1, in which the end of said glass fiber body has a circular plane.
Claim 7
Dependent Claim
19 words
A method according to claim 1, in which the end of said glass fiber body has a rectangular plane.
Claim 8
Dependent Claim
40 words
A method according to claim 1, in which said first step comprises vertically bringing the end of the glass fiber body into contact with said liquid-like material and said second step comprises vertically lifting it up off the liquid-like material.
Claim 9
Dependent Claim
23 words
A method according to claim 1, in which said liquid-like material has a smaller refractive index than that of said fiber glass body.
Claim 10
Dependent Claim
17 words
A method according to claim 1, in which said liquid-like material is a bisphenol type epoxy resin.
Claim 11
Dependent Claim
14 words
A method according to claim 1 in which said liquid-like material is Canada balsam.
Claim 12
Dependent Claim
14 words
A method according to claim 1, in which said liquid-like material is acrylic resin.
References Cited (Backward Citations)
US303607A
Cited
US1466973A
Cited
US3288585A
Cited
US3347651A
Cited
US3490889A
Cited
US3724924A
Cited
US3742731A
Cited
US3930824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |