ZA833419B - A focusing apparatus - Google Patents

A focusing apparatus

Info

Publication number
ZA833419B
ZA833419B ZA833419A ZA833419A ZA833419B ZA 833419 B ZA833419 B ZA 833419B ZA 833419 A ZA833419 A ZA 833419A ZA 833419 A ZA833419 A ZA 833419A ZA 833419 B ZA833419 B ZA 833419B
Authority
ZA
South Africa
Prior art keywords
focusing apparatus
focusing
Prior art date
Application number
ZA833419A
Inventor
Boleslaw Czajkowski Stanislaw
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 ZA833419B publication Critical patent/ZA833419B/en

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)
  • Transducers For Ultrasonic Waves (AREA)
  • Automatic Focus Adjustment (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Cereal-Derived Products (AREA)
  • Eye Examination Apparatus (AREA)
ZA833419A 1982-05-14 1983-05-13 A focusing apparatus ZA833419B (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 (1)

Publication Number Publication Date
ZA833419B true ZA833419B (en) 1984-02-29

Family

ID=11022917

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA833419A ZA833419B (en) 1982-05-14 1983-05-13 A focusing 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
JPS59500989A (en) 1984-05-31
WO1983004127A1 (en) 1983-11-24
EP0108781A1 (en) 1984-05-23
GB8313155D0 (en) 1983-06-22
AU1553383A (en) 1983-12-02
IE53117B1 (en) 1988-07-06
IE821164L (en) 1983-11-14
GB2120508B (en) 1986-02-26
AU592050B2 (en) 1990-01-04
GB2120508A (en) 1983-11-30
EP0108781B1 (en) 1987-05-13
DE3371579D1 (en) 1987-06-19
NZ204236A (en) 1986-08-08

Similar Documents

Publication Publication Date Title
DE3362267D1 (en) Sheet-binding apparatus
DE3372073D1 (en) Medicine-delivering apparatus
DE3361983D1 (en) Automatic focussing apparatus
GB2119765B (en) Web-reeling apparatus
GB8315100D0 (en) Welding apparatus
GB2130276B (en) Anti-scour apparatus
GB2124845B (en) Welding apparatus
GB8305578D0 (en) Oculometer apparatus
GB8333771D0 (en) Welding apparatus
GB8301971D0 (en) Welding apparatus
EP0099756A3 (en) Diaphanoscopy apparatus
GB2138269B (en) Rice-hulling apparatus
GB2128520B (en) A slag-scraping apparatus
GB2126118B (en) Fuel-reforming apparatus
GB8333867D0 (en) Welding apparatus
GB8316423D0 (en) Car-directing apparatus
GB2127551B (en) Weighbelt apparatus
GB2113817B (en) Optical apparatus
GB8321763D0 (en) Manupulator apparatus
GB8333866D0 (en) Welding apparatus
GB2119660B (en) A protective apparatus
GB8325804D0 (en) Welding apparatus
ZA833419B (en) A focusing apparatus
GB2125757B (en) Block-handling apparatus
GB2132542B (en) Welding apparatus