GB8313155D0 - Focusing apparatus - Google Patents

Focusing apparatus

Info

Publication number
GB8313155D0
GB8313155D0 GB838313155A GB8313155A GB8313155D0 GB 8313155 D0 GB8313155 D0 GB 8313155D0 GB 838313155 A GB838313155 A GB 838313155A GB 8313155 A GB8313155 A GB 8313155A GB 8313155 D0 GB8313155 D0 GB 8313155D0
Authority
GB
United Kingdom
Prior art keywords
focusing apparatus
focusing
Prior art date
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.)
Granted
Application number
GB838313155A
Other versions
GB2120508A (en
GB2120508B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sonic Tape Plc
Original Assignee
Sonic Tape Plc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sonic Tape Plc filed Critical Sonic Tape Plc
Publication of GB8313155D0 publication Critical patent/GB8313155D0/en
Publication of GB2120508A publication Critical patent/GB2120508A/en
Application granted granted Critical
Publication of GB2120508B publication Critical patent/GB2120508B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/28—Sound-focusing or directing, e.g. scanning using reflection, e.g. parabolic reflectors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Automatic Focus Adjustment (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Cereal-Derived Products (AREA)
  • Eye Examination Apparatus (AREA)
GB08313155A 1982-05-14 1983-05-13 Improvements relating to focussing apparatus Expired GB2120508B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE1164/82A IE53117B1 (en) 1982-05-14 1982-05-14 Improvements relating to focussing apparatus

Publications (3)

Publication Number Publication Date
GB8313155D0 true GB8313155D0 (en) 1983-06-22
GB2120508A GB2120508A (en) 1983-11-30
GB2120508B GB2120508B (en) 1986-02-26

Family

ID=11022917

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08313155A Expired GB2120508B (en) 1982-05-14 1983-05-13 Improvements relating to focussing apparatus

Country Status (9)

Country Link
EP (1) EP0108781B1 (en)
JP (1) JPS59500989A (en)
AU (1) AU592050B2 (en)
DE (1) DE3371579D1 (en)
GB (1) GB2120508B (en)
IE (1) IE53117B1 (en)
NZ (1) NZ204236A (en)
WO (1) WO1983004127A1 (en)
ZA (1) ZA833419B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4664055A (en) * 1984-02-21 1987-05-12 Kobishi Electric Co., Ltd. Alarm horn
GB2167557B (en) * 1984-10-11 1988-07-20 Fisco Electronics Distance sensing
JP3116119B2 (en) * 1989-04-27 2000-12-11 ティーオーエー株式会社 Horn for speaker
GB2316846B (en) * 1996-08-30 2000-07-26 Harman Int Ind Loudspeaker

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB448864A (en) * 1934-12-10 1936-06-10 Douglas Stuart Spens Steuart Improvements in or relating to apparatus for the production, reception, conduction, transmission, reproduction, and/or location of sound
GB448825A (en) * 1934-12-10 1936-06-10 Douglas Stuart Spens Steuart Improvements in or relating to apparatus for the production, reception, conduction, transmission, reproduction and/or location of sound
US3982824A (en) * 1971-12-01 1976-09-28 Raytheon Company Catoptric lens arrangement
US3827059A (en) * 1972-07-03 1974-07-30 Raytheon Co Catoptric lens arrangement
US4105990A (en) * 1976-09-13 1978-08-08 The Academy Of Applied Science Inc. Process of and apparatus for exploring objects detected by different energy sources
DE2755556C3 (en) * 1977-12-13 1981-11-19 ELP-Electronic & Plastic's GmbH, 5880 Lüdenscheid Device for contactless distance measurement
US4260928A (en) * 1978-11-09 1981-04-07 General Electric Company Electro-acoustic transducer with horn and reflector
US4194590A (en) * 1979-04-13 1980-03-25 Shure Brothers, Incorporated Loudspeaker horn with adjustable angle of dispersion
DE3035082A1 (en) * 1980-09-17 1982-04-22 Siemens AG, 1000 Berlin und 8000 München METHOD AND ARRANGEMENT FOR THE OPTICAL-ELECTRONIC DETECTION OF SURFACE STRUCTURES ON ROTATION-SYMMETRIC BODIES

Also Published As

Publication number Publication date
WO1983004127A1 (en) 1983-11-24
ZA833419B (en) 1984-02-29
GB2120508A (en) 1983-11-30
DE3371579D1 (en) 1987-06-19
AU1553383A (en) 1983-12-02
EP0108781B1 (en) 1987-05-13
NZ204236A (en) 1986-08-08
IE53117B1 (en) 1988-07-06
AU592050B2 (en) 1990-01-04
GB2120508B (en) 1986-02-26
EP0108781A1 (en) 1984-05-23
IE821164L (en) 1983-11-14
JPS59500989A (en) 1984-05-31

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee