Title:
PLASTIC OPTICAL FIBER FOR MEDICAL DEVICE LIGHTING AND MEDICAL DEVICE LIGHTING USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/059160
Kind Code:
A1
Abstract:
The present invention provides a plastic optical fiber for medical device lighting, which has a core formed from a (co)polymer that is mainly composed of methyl methacrylate, and which is characterized in that: a cladding is composed of a copolymer that has a weight proportion of fluorine components of 60-74%; and the theoretical numerical aperture NA is from 0.48 to 0.65. Due to the above-described configuration, this plastic optical fiber for medical device lighting has high numerical aperture in addition to excellent light transmitting properties and excellent bending resistance. Additionally, this plastic optical fiber for medical device lighting enables reduction of lens cost and simplification of designing of a lighting device.
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Inventors:
KOJIMA HIDEKI (JP)
MAEDA HIRONOBU (JP)
SATO SHINJI (JP)
KUNIEDA HIDEKAZU (JP)
MATSUBA SATOSHI (JP)
MAEDA HIRONOBU (JP)
SATO SHINJI (JP)
KUNIEDA HIDEKAZU (JP)
MATSUBA SATOSHI (JP)
Application Number:
PCT/JP2018/034392
Publication Date:
March 28, 2019
Filing Date:
September 18, 2018
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
A61B1/07; D01F8/10; F21S2/00; F21V8/00; G02B6/02; F21Y101/00; F21Y115/10
Domestic Patent References:
| WO2015015996A1 | 2015-02-05 |
Foreign References:
| JP2002535025A | 2002-10-22 | |||
| JP2002098864A | 2002-04-05 | |||
| JP2011209487A | 2011-10-20 | |||
| JPH0843678A | 1996-02-16 | |||
| JP2857411B2 | 1999-02-17 | |||
| JPH1195044A | 1999-04-09 | |||
| JPH10274716A | 1998-10-13 | |||
| JP4310899B2 | 2009-08-12 |
Other References:
ANONYMOUS: "RAYTELA polymer optical fiber", LASER COMPONENTS, June 2016 (2016-06-01), pages 1 - 14, XP009519631
OKAMOTO, KATSUNARI: "Optical Communication Techniques(4), Light propagation in optical fibers", THE JOURNAL OF THE INSTITUTE OF TELEVISION ENGINEERS OF JAPAN, vol. 41, no. 9, 20 September 1987 (1987-09-20), pages 836 - 844, XP009519630, ISSN: 0386-6831, DOI: 10.3169/itej1978.41.836
See also references of EP 3685733A4
OKAMOTO, KATSUNARI: "Optical Communication Techniques(4), Light propagation in optical fibers", THE JOURNAL OF THE INSTITUTE OF TELEVISION ENGINEERS OF JAPAN, vol. 41, no. 9, 20 September 1987 (1987-09-20), pages 836 - 844, XP009519630, ISSN: 0386-6831, DOI: 10.3169/itej1978.41.836
See also references of EP 3685733A4
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