CN2747592Y - 光学变换器以及使用该光学变换器的乐器 - Google Patents

光学变换器以及使用该光学变换器的乐器 Download PDF

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Publication number
CN2747592Y
CN2747592Y CNU2004201048090U CN200420104809U CN2747592Y CN 2747592 Y CN2747592 Y CN 2747592Y CN U2004201048090 U CNU2004201048090 U CN U2004201048090U CN 200420104809 U CN200420104809 U CN 200420104809U CN 2747592 Y CN2747592 Y CN 2747592Y
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CN
China
Prior art keywords
light
light emission
optical fiber
optical
detecting unit
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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CNU2004201048090U
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English (en)
Chinese (zh)
Inventor
加藤忠晴
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Yamaha Corp
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Yamaha Corp
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Publication date
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Publication of CN2747592Y publication Critical patent/CN2747592Y/zh
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    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10FAUTOMATIC MUSICAL INSTRUMENTS
    • G10F1/00Automatic musical instruments
    • G10F1/02Pianofortes with keyboard

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
  • Length Measuring Devices By Optical Means (AREA)
CNU2004201048090U 2003-09-18 2004-09-20 光学变换器以及使用该光学变换器的乐器 Expired - Lifetime CN2747592Y (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003325731A JP4284650B2 (ja) 2003-09-18 2003-09-18 光学検出装置
JP325731/03 2003-09-18

Publications (1)

Publication Number Publication Date
CN2747592Y true CN2747592Y (zh) 2005-12-21

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ID=34308710

Family Applications (1)

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CNU2004201048090U Expired - Lifetime CN2747592Y (zh) 2003-09-18 2004-09-20 光学变换器以及使用该光学变换器的乐器

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Country Link
US (1) US7186967B2 (enExample)
JP (1) JP4284650B2 (enExample)
CN (1) CN2747592Y (enExample)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10348715B4 (de) 2003-10-16 2006-05-04 Infineon Technologies Ag Verfahren zum Herstellen eines Flachleiterrahmens mit verbesserter Haftung zwischen diesem und Kunststoff sowie Flachleiterrahmen
US7825312B2 (en) * 2008-02-27 2010-11-02 Steinway Musical Instruments, Inc. Pianos playable in acoustic and silent modes
US20090282962A1 (en) * 2008-05-13 2009-11-19 Steinway Musical Instruments, Inc. Piano With Key Movement Detection System
US8148620B2 (en) * 2009-04-24 2012-04-03 Steinway Musical Instruments, Inc. Hammer stoppers and use thereof in pianos playable in acoustic and silent modes
US8541673B2 (en) 2009-04-24 2013-09-24 Steinway Musical Instruments, Inc. Hammer stoppers for pianos having acoustic and silent modes
US7977566B2 (en) 2009-09-17 2011-07-12 Waleed Sami Haddad Optical instrument pickup
US8519252B2 (en) 2011-03-16 2013-08-27 Waleed Sami Haddad Optoelectronic pickup for musical instruments
US9047851B2 (en) 2012-09-19 2015-06-02 Light4Sound Optoelectronic pickup for musical instruments
CN114667239B (zh) * 2020-10-15 2024-08-27 株式会社电装天 车载装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3937952A (en) * 1972-09-22 1976-02-10 National Research Development Corporation Keyboard and switches for keyboards
US4480183A (en) * 1982-03-16 1984-10-30 Burroughs Corporation Multi-plane optical membrane switch apparatus
JP3552374B2 (ja) * 1995-11-30 2004-08-11 ヤマハ株式会社 信号出力装置および光センサ
JP3496374B2 (ja) 1995-11-30 2004-02-09 ヤマハ株式会社 光ファイバセンサ用コネクタ
JP3922085B2 (ja) * 2002-04-25 2007-05-30 ヤマハ株式会社 光ファイバ束の保持構造
JP3979168B2 (ja) * 2002-04-26 2007-09-19 ヤマハ株式会社 鍵盤楽器の押鍵検出装置における発光部構造

Also Published As

Publication number Publication date
JP4284650B2 (ja) 2009-06-24
US20050061959A1 (en) 2005-03-24
US7186967B2 (en) 2007-03-06
JP2005093755A (ja) 2005-04-07

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CX01 Expiry of patent term

Expiration termination date: 20140920

Granted publication date: 20051221