Patent EP0188273A2 successfully refreshed from Google Patents.
EP0188273A2
Expired / Lapsed
EP
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Fiberscope
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1986-01-14
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Granted: —
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Expires: 2006-01-14
Abstract
Abstract A fiberscope having a covering tube, an image fiber for transmitting picture images and equipped with an optical system at its tip end for focusing an image of an object to be observed, and light guides for transmitting light and placed along with said image fiber. The image fiber and the light guides are enclosed in said covering tube. A plastic body formed of substantially transparent material and convex shape is provided at front ends of the light guides. Liguid guide passages are also provided between an inner peripheral surface of the covering tube and outer peripheral surfaces of the image fiber and the light guides. Outlet ends of the light guides are arranged in positions substantially symmetrical with respect to an outlet end of the image fiber, and outlet ends of the liquid guide passages are arranged in positions substantially symmetrical with respect to the outlet end of the image fiber.
Inventors
- 👤 Koichi C/O Osaka Works Tsuno
- 👤 Mitsuru C/O Osaka Works Nishikawa
- 👤 Kunio C/O Osaka Works Awazu
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 10:13
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/24; G02B23/26; A; A61; A61B; A61B1/00; A61B1/00064; A61B1/0011; A61B1/00163; A61B1/00165; A61B1/12; Y; Y10; Y10S; Y10S600/00; Y10S600/92
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
86 words
In a fiberscope including a covering tube, an image fiber for transmitting picture images, said image fiber being equipped with an optical system at its tip end for focusing an image of an object to be observed, and light guides for transmitting light, said light guides being placed along with said image fiber, and said image fiber and said light guides being enclosed by said covering tube, the improvement comprising substantially transparent plastic body having convex shape and provided at front ends of said light guides.
Claim 2
Dependent Claim
86 words
In a fiberscope including a covering tube, an image fiber for transmitting picture images, said image fiber being equipped with an optical system at its tip end for focusing an image of an object to be observed, and light guides for transmitting light, said light guides being placed along with said image fiber, and said image fiber and said light guides being enclosed by said covering tube, the improvement comprising substantially transparent plastic body having convex shape and provided at front ends of said light guides.
Claim 3
Dependent Claim
22 words
The improvement of claim 1, wherein peripheral portion of front end of said covering tube is also covered with said plastic body.
Claim 4
Dependent Claim
53 words
The improvement of claim 1, wherein liquid passages are provided between an inner peripheral surface of said covering tube and outer peripheral surfaces of said image fiber and said light guides, said liquid passages being adapted to from flow of transparent liquid flush in front of said optical system and said light guides.
Claim 5
Dependent Claim
25 words
The improvement of claim 1, wherein said plastic body is formed one of epoxy resin, ultraviolet curing silicon resin, and acrylic resin, and urethane resin.
Claim 6
Dependent Claim
51 words
The improvement of claim 3, wherein outlet ends of said light guides are arranged in positions substantially symmetrical with respect to an outlet end of said image fiber, and outlet ends of said liquid passages are arranged in positions substantially symmetrical with respect to said outlet end of said image fiber.
Claim 7
Dependent Claim
90 words
In an end portion construction of an optical fiber sensor including an optical fiber bundle and a synthetic resin tube covering said bundle, the improvement comprising; an inner peripheral surface of an end portion of said synthetic resin tube being formed with a plurality of circumferential grooves, and an adhesive agent filled in a space defined between said grooves and an outer peripheral surface of an end portion of said optical fiber bundle, whereby said end portion of said tube is fixedly secured to said end portion of said bundle.
Claim 8
Dependent Claim
90 words
In an end portion construction of an optical fiber sensor including an optical fiber bundle and a synthetic resin tube covering said bundle, the improvement comprising; an inner peripheral surface of an end portion of said synthetic resin tube being formed with a plurality of circumferential grooves, and an adhesive agent filled in a space defined between said grooves and an outer peripheral surface of an end portion of said optical fiber bundle, whereby said end portion of said tube is fixedly secured to said end portion of said bundle.
Claim 9
Dependent Claim
21 words
The improvement of claim 6, wherein material of said optical fiber bundle is compatible with the material of said adhesive agent.
Claim 10
Dependent Claim
31 words
An image pickup optical system comprising: a lens, and an annular lens iris disposed in front of said lens, said lens iris being formed one of light-shielding resin and vacuum-deposited film.
Claim 11
Dependent Claim
31 words
An image pickup optical system comprising: a lens, and an annular lens iris disposed in front of said lens, said lens iris being formed one of light-shielding resin and vacuum-deposited film.
Claim 12
Dependent Claim
22 words
An image pickup optical system as claimed in claim 8, wherein an aperture diameter of said lensiris is not more than lmm.
References Cited (Backward Citations)
US4319563A
Cited
EP0119614A1
Cited
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