FR2647895A1 - Detecteur de position - Google Patents

Detecteur de position Download PDF

Info

Publication number
FR2647895A1
FR2647895A1 FR9006991A FR9006991A FR2647895A1 FR 2647895 A1 FR2647895 A1 FR 2647895A1 FR 9006991 A FR9006991 A FR 9006991A FR 9006991 A FR9006991 A FR 9006991A FR 2647895 A1 FR2647895 A1 FR 2647895A1
Authority
FR
France
Prior art keywords
elements
ring
lens
length
generating portion
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.)
Pending
Application number
FR9006991A
Other languages
English (en)
French (fr)
Inventor
Kimiaki Ogawa
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo Co Ltd
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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Publication of FR2647895A1 publication Critical patent/FR2647895A1/fr
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/56—Accessories
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/249—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using pulse code
    • G01D5/2492—Pulse stream
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/245—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
    • G01D5/2454—Encoders incorporating incremental and absolute signals
    • G01D5/2455—Encoders incorporating incremental and absolute signals with incremental and absolute tracks on the same encoder
    • G01D5/2457—Incremental encoders having reference marks

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lens Barrels (AREA)
  • Length Measuring Devices By Optical Means (AREA)
FR9006991A 1989-06-06 1990-06-06 Detecteur de position Pending FR2647895A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989065924U JPH036615U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1989-06-06 1989-06-06

Publications (1)

Publication Number Publication Date
FR2647895A1 true FR2647895A1 (fr) 1990-12-07

Family

ID=13301007

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9006991A Pending FR2647895A1 (fr) 1989-06-06 1990-06-06 Detecteur de position

Country Status (6)

Country Link
US (1) US5073790A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPH036615U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
KR (1) KR960000556Y1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE4017794A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2647895A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2234345A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0553170A (ja) * 1991-08-29 1993-03-05 Canon Inc 絞り装置を有する光学機器
US5781817A (en) * 1996-01-26 1998-07-14 Asahi Kogaku Kogyo Kabushiki Kaisha Exposure controlling device and encoder for camera
GB2309519B (en) * 1996-01-26 1999-12-15 Asahi Optical Co Ltd Encoder for camera
KR970071598A (ko) * 1996-04-30 1997-11-07 배순훈 전자제품의 모드 판별 장치
AT406800B (de) * 1998-03-09 2000-09-25 Bauer Fritz Steuerungssystem für ein objektiv einer kamera
JP2001194574A (ja) * 2000-01-11 2001-07-19 Fuji Photo Film Co Ltd 移動機構、レンズ鏡胴、及び撮像装置
US6724429B2 (en) 2001-04-23 2004-04-20 Panavision, Inc. System for sensing and displaying lens data for high performance film and video cameras and lenses
AU2002314867B2 (en) 2001-05-30 2006-07-06 Panavision Inc. Hand-held remote control and display system for film and video cameras and lenses
JP5533055B2 (ja) * 2010-03-10 2014-06-25 ソニー株式会社 光学的測定装置及び光学的測定方法
CN102466842B (zh) * 2010-11-09 2013-04-24 亚洲光学股份有限公司 光学装置及其镜头碰撞防止方法
JP6020583B2 (ja) * 2012-10-11 2016-11-02 ソニー株式会社 位置検出装置、レンズ鏡筒、撮像装置
KR20250042764A (ko) * 2018-04-20 2025-03-27 쉘터드 윙스, 인크. 디/비/에이 보텍스 옵틱스 직접 능동 레티클 표적화를 구비하는 시야 광학체

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6089709A (ja) * 1983-10-21 1985-05-20 Mitsubishi Electric Corp 絶対位置検出装置
FR2595461A1 (fr) * 1986-03-04 1987-09-11 Peugeot Procede de reperage angulaire d'une machine tournante
US4750821A (en) * 1984-08-24 1988-06-14 Canon Kabushiki Kaisha Zoom lens assembly

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2357061C2 (de) * 1973-11-15 1985-02-14 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zur Abgabe von gleichmäßigen Impulsen bei bestimmten Winkelstellungen einer drehbaren Welle und zur Bildung von wenigstens einem Bezugssignal
GB1484414A (en) * 1974-05-28 1977-09-01 Schneider Co Optische Werke Adjusting device for variable-focus lenses
US4442351A (en) * 1981-10-05 1984-04-10 General Electric Company Optoelectronic incremental position encoder
DE3403150C1 (de) * 1984-01-31 1985-07-04 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Anordnung zur Erzeugung von Steuerimpulsen zum Betrieb eines Videoaufzeichnungs- und Wiedergabegeraetes
JPH0754391B2 (ja) * 1984-02-14 1995-06-07 オリンパス光学工業株式会社 カメラの露出制御装置
GB2157039B (en) * 1984-04-03 1988-11-30 Monarch Marking Systems Inc System for controlling the advancement of a web of sheet stock containing a plurality of labels
DE3602292A1 (de) * 1986-01-25 1987-08-06 Audi Ag Geberanordnung
US4786803A (en) * 1987-06-01 1988-11-22 Hewlett-Packard Company Single channel encoder with specific scale support structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6089709A (ja) * 1983-10-21 1985-05-20 Mitsubishi Electric Corp 絶対位置検出装置
US4750821A (en) * 1984-08-24 1988-06-14 Canon Kabushiki Kaisha Zoom lens assembly
FR2595461A1 (fr) * 1986-03-04 1987-09-11 Peugeot Procede de reperage angulaire d'une machine tournante

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 9, no. 236 (P-390)(1959) 21 Septembre 1985 & JP-A-60 089 709 ( MITSUBISHI DENKI K.K. ) 20 Mai 1985 *

Also Published As

Publication number Publication date
GB2234345A (en) 1991-01-30
KR910001232U (ko) 1991-01-24
GB9012470D0 (en) 1990-07-25
KR960000556Y1 (ko) 1996-01-17
DE4017794A1 (de) 1990-12-13
JPH036615U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-01-23
US5073790A (en) 1991-12-17

Similar Documents

Publication Publication Date Title
FR2647895A1 (fr) Detecteur de position
FR2739945A1 (fr) Dispositif de mise au point automatique
DK163754B (da) Fingeraftryksafbildningsapparat
FR2646933A1 (fr) Dispositif de mesure de distance
FR2676552A1 (fr) Dispositif de mise au point automatique.
FR2649807A1 (fr) Appareil photographique electronique a image fixe
FR2730829A1 (fr) Dispositif de mesure de distance
FR2644579A1 (fr) Dispositif de detection de position pour appareil photographique
FR2665555A1 (fr) Procedes et appareils de lecture de symboles, notamment de codes a barres.
FR2676827A1 (fr) Objectif zoom motorise et systeme d'appareil photo.
FR2653568A1 (fr) Appareil photo a flash incorpore.
FR2497569A1 (fr) Systeme d'evaluation automatique de distance pour un appareil photographique de prise de vues
FR2696838A1 (fr) Dispositif de pointage d'une cible mobile.
CH449985A (fr) Télémètre, notamment pour l'emploi en photographie
FR2641619A1 (fr) Appareil photographique ayant des fonctions selectives
FR2659751A1 (fr) Dispositif de changement de plan motorise pour un objectif a focale variable.
US4394077A (en) Device for detecting sharp focusing
JPH0617930B2 (ja) レンズ交換式カメラのための測距装置
US6269580B1 (en) Motor-driven focusing apparatus of a sighting telescope
FR2653909A1 (fr) Dispositif de mesure de distance d'objet dans un appareil photo.
FR2472767A1 (fr) Appareil photographique du type a mise au point automatique
FR2644600A1 (fr) Dispositif de commande d'arret pour appareil photographique
FR2652919A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
WO1988001375A1 (en) Fault detection and reset in surface reflectance meter
FR2493542A1 (fr) Dispositif annonciateur pour dispositif de reglage de foyer d'appareil photographique