CH629312A5 - Rangefinder for focusing cameras - Google Patents

Rangefinder for focusing cameras Download PDF

Info

Publication number
CH629312A5
CH629312A5 CH1205377A CH1205377A CH629312A5 CH 629312 A5 CH629312 A5 CH 629312A5 CH 1205377 A CH1205377 A CH 1205377A CH 1205377 A CH1205377 A CH 1205377A CH 629312 A5 CH629312 A5 CH 629312A5
Authority
CH
Switzerland
Prior art keywords
filter
section
pulse
echo
frequency
Prior art date
Application number
CH1205377A
Other languages
German (de)
English (en)
Inventor
Juerg Muggli
Original Assignee
Polaroid Corp
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 Polaroid Corp filed Critical Polaroid Corp
Publication of CH629312A5 publication Critical patent/CH629312A5/de

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/40—Systems for automatic generation of focusing signals using time delay of the reflected waves, e.g. of ultrasonic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G01S15/08—Systems for measuring distance only
    • G01S15/10—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves
    • G01S15/102—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves using transmission of pulses having some particular characteristics
    • G01S15/104—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves using transmission of pulses having some particular characteristics wherein the transmitted pulses use a frequency- or phase-modulated carrier wave

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Optics & Photonics (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Rehabilitation Tools (AREA)
CH1205377A 1976-10-04 1977-10-03 Rangefinder for focusing cameras CH629312A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72939276A 1976-10-04 1976-10-04

Publications (1)

Publication Number Publication Date
CH629312A5 true CH629312A5 (en) 1982-04-15

Family

ID=24930826

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1205377A CH629312A5 (en) 1976-10-04 1977-10-03 Rangefinder for focusing cameras

Country Status (8)

Country Link
JP (1) JPS6045378B2 (fr)
AT (1) AT370885B (fr)
CA (1) CA1120578A (fr)
CH (1) CH629312A5 (fr)
DE (1) DE2744092C3 (fr)
FR (1) FR2366582A1 (fr)
GB (1) GB1588927A (fr)
IT (1) IT1087398B (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2801251A1 (de) * 1978-01-12 1979-07-19 Agfa Gevaert Ag Vorrichtung zur scharfeinstellung des objektivs einer fotografischen oder kinematografischen kamera
US4315676A (en) * 1978-11-13 1982-02-16 Polaroid Corporation Camera with auto ranging focusing and flash fire control
US4239354A (en) * 1979-01-02 1980-12-16 Polaroid Corporation Autofocus movie camera having improved focus response
US4238143A (en) * 1979-01-02 1980-12-09 Polaroid Corporation Autofocus movie camera having pulsed terminal drive means
WO1981000456A1 (fr) * 1979-07-30 1981-02-19 Dorian Ind Pty Ltd Procede et dispositif de mesure de distance
CA1154140A (fr) * 1979-10-03 1983-09-20 John M. Reynard Systeme de reconnaissance d'echo
US4307952A (en) * 1980-06-03 1981-12-29 Polaroid Corporation Auto focus camera with electronic lens disc pawl release arrangement
JPS58187916A (ja) * 1982-04-28 1983-11-02 West Electric Co Ltd 超音波測距装置
GB2173620A (en) * 1985-04-11 1986-10-15 Frankie Wang Automatic distance-off alarms for reversing vehicles
GB2352294A (en) * 1996-09-11 2001-01-24 Michael William Hustwitt Ultrasonic object detection system
CN102478655A (zh) * 2010-11-23 2012-05-30 比亚迪股份有限公司 超声波测距方法、测距系统及具有其的摄像组件
DE102013200434A1 (de) * 2013-01-14 2014-07-17 Robert Bosch Gmbh Vorrichtung und Verfahren zur Umfeldsensorik
US10809346B2 (en) * 2017-06-30 2020-10-20 Rohm Co., Ltd. Semiconductor device, ultrasonic sensor, and moving body

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1932969A1 (de) * 1969-06-28 1971-01-07 Zeiss Ikon Ag Einrichtung zur automatischen Entfernungseinstellung von Kamera-Objektiven
JPS4947861A (fr) * 1972-09-14 1974-05-09
US3815409A (en) * 1973-02-15 1974-06-11 A Macovski Focused sonic imaging system
DE2317662B2 (de) * 1973-04-07 1975-01-30 Electroacustic Gmbh, 2300 Kiel Verfahren zur Entfernungsmessung nach der Echolaufzeitmethode
JPS534140B2 (fr) * 1973-08-09 1978-02-14

Also Published As

Publication number Publication date
FR2366582B1 (fr) 1980-07-25
GB1588927A (en) 1981-04-29
DE2744092A1 (de) 1978-04-06
DE2744092B2 (de) 1980-02-21
DE2744092C3 (de) 1980-10-09
ATA706477A (de) 1982-09-15
CA1120578A (fr) 1982-03-23
JPS6045378B2 (ja) 1985-10-09
AT370885B (de) 1983-05-10
JPS5345267A (en) 1978-04-22
FR2366582A1 (fr) 1978-04-28
IT1087398B (it) 1985-06-04

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Legal Events

Date Code Title Description
PL Patent ceased