Patent US5226173A successfully refreshed from Google Patents.
Patent EP0069870A1 successfully refreshed from Google Patents.
EP0069870A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Image transmission line
Assignee: Sumitomo Electric Industries Ltd
•
Filing: 1982-06-15
•
Granted: —
•
Expires: 2002-06-15
Abstract
Abstract An image transmitting optical fiber device (11) is improved in contrast by limiting the incident angle of light applied thereto and/or by placing an antireflection member (7) in the light path at one or both of the ends of the device.
Inventors
- 👤 Kenichi Sumitomo Electric Ind. Ltd. Yoshida
- 👤 Kimizo Sumitomo Electric Ind. Ltd. Ono
- 👤 Koichi Sumitomo Electric Ind. Ltd. Tsuno
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 12:59
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/04; G02B6/06; G02B23/00; G02B23/24; G02B23/26
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
52 words
An image transmission line, comprising; a plurality of optical fiber elements bundled together and aligned with each other, wherein at least one of the incident end surface and the emergent end surface of the image transmission line is provided with means for removing light rays reducing the contrast of the transmitted image.
Claim 2
Dependent Claim
52 words
An image transmission line, comprising; a plurality of optical fiber elements bundled together and aligned with each other, wherein at least one of the incident end surface and the emergent end surface of the image transmission line is provided with means for removing light rays reducing the contrast of the transmitted image.
Claim 3
Dependent Claim
45 words
The image transmission line as claimed in claim 1, wherein said means comprises a stopping member for controlling the maximum incident angle of incident light to a value not more than the numerical aperture of the image transmission line at the incident end surface thereof.
Claim 4
Dependent Claim
36 words
The image transmission line as claimed in claim 1, wherein said means comprises a reflection-preventing membrane provided at at least one of the incident end surface and the emergent end surface of the image transmission line.
Claim 5
Dependent Claim
81 words
The image transmission line as claimed in claim 2, said stopping member comprising an end piece fixed to an incident end surface of said transmission line, and-having an angular surface encompassing a solid angle related to said maximum incident angle and centered about said incident end surface. S. The image transmission line as claimed in claim 2, said stopping member comprising a stop ring associated with a lens group arranged in front of said incident end surface of said transmission line.
Claim 6
Dependent Claim
26 words
The image transmission line as claimed in claim 3, wherein said membrane is applied directly onto at least one of said incident and emergent end surfaces.
Claim 7
Dependent Claim
35 words
The image transmission line as claimed in claim 3, wherein said membrane is applied to a glass plate, said plate being affixed to at least one end of said transmission line through a matching liquid.
Claim 8
Dependent Claim
43 words
An image transmission line, comprising; a plurality of optical fiber elements bundled together and aligned with each other, wherein at least one of the incident end surface and the emergent end surface of the image transmission line is provided with a reflection-preventing membrane.
Claim 9
Dependent Claim
43 words
An image transmission line, comprising; a plurality of optical fiber elements bundled together and aligned with each other, wherein at least one of the incident end surface and the emergent end surface of the image transmission line is provided with a reflection-preventing membrane.
Claim 10
Dependent Claim
59 words
An image transmission line, comprising; a plurality of optical fiber elements bundled together and aligned with each other, wherein the image transmission line is provided at the incident end portion thereof with aperture controlling means for-controlling the maximum incident angle of incident light to a value not more than the numerical aperture of the image transmission line or less.
Claim 11
Dependent Claim
59 words
An image transmission line, comprising; a plurality of optical fiber elements bundled together and aligned with each other, wherein the image transmission line is provided at the incident end portion thereof with aperture controlling means for-controlling the maximum incident angle of incident light to a value not more than the numerical aperture of the image transmission line or less.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.