[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

JPS5764204A - Automatic focus controller - Google Patents

Automatic focus controller

Info

Publication number
JPS5764204A
JPS5764204A JP55140099A JP14009980A JPS5764204A JP S5764204 A JPS5764204 A JP S5764204A JP 55140099 A JP55140099 A JP 55140099A JP 14009980 A JP14009980 A JP 14009980A JP S5764204 A JPS5764204 A JP S5764204A
Authority
JP
Japan
Prior art keywords
voltage
ambient temperature
barrel
photographed
outputted
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
JP55140099A
Other languages
Japanese (ja)
Inventor
Michio Yagi
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP55140099A priority Critical patent/JPS5764204A/en
Priority to DE19813139593 priority patent/DE3139593A1/en
Publication of JPS5764204A publication Critical patent/JPS5764204A/en
Pending legal-status Critical Current

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
    • G02B7/30—Systems for automatic generation of focusing signals using parallactic triangle with a base line
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Lens Barrels (AREA)

Abstract

PURPOSE:To compensate a variation caused by a temperature of a focal distance of a photographing lens containing a plastic lens, by providin an automatic correcting circuit for correcting a variable of a focal distance corresponding to an ambient temperature, on an automatic focus controller. CONSTITUTION:A barrel of a photographing lens L3 is moved in the optical axis direction by pressure of a release button LB. A reflected ray from an object to be photographed, by a light emission of a light source LS is photodetected by an image position detector PSD, and output currents I1, I2 corresponding to a position of the luminance centroid are outputted. These outputs are operated by a position processing circuit PDC, and voltage V1 corresponding to a distance of an object to be photographed is outputted. On the other hand, voltage V2 corresponding to a position of the barrel depends on an ambient temperature measured by temperature detecting element TS, and in case of coincidence of the voltage V1, V2, the barrel stops moving. Accordingly, shift of a focal position due to change of an ambient temperature is corrected.
JP55140099A 1980-10-06 1980-10-06 Automatic focus controller Pending JPS5764204A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP55140099A JPS5764204A (en) 1980-10-06 1980-10-06 Automatic focus controller
DE19813139593 DE3139593A1 (en) 1980-10-06 1981-10-05 Process and device for distance setting in a photographic camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55140099A JPS5764204A (en) 1980-10-06 1980-10-06 Automatic focus controller

Publications (1)

Publication Number Publication Date
JPS5764204A true JPS5764204A (en) 1982-04-19

Family

ID=15260913

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55140099A Pending JPS5764204A (en) 1980-10-06 1980-10-06 Automatic focus controller

Country Status (2)

Country Link
JP (1) JPS5764204A (en)
DE (1) DE3139593A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57177107A (en) * 1981-04-24 1982-10-30 Hamamatsu Tv Kk Automatic focusing device
JPS60163046A (en) * 1984-02-03 1985-08-24 Nippon Kogaku Kk <Nikon> Projection exposing optical device
JPS60235110A (en) * 1984-05-07 1985-11-21 Minolta Camera Co Ltd Temperature compensating device of focus detecting device
US4828383A (en) * 1985-11-11 1989-05-09 Olympus Optical Co., Ltd. Range-finding optical system
JPH01288806A (en) * 1988-05-16 1989-11-21 Minolta Camera Co Ltd Device for correcting lens back fluctuation in camera
US5162836A (en) * 1990-03-20 1992-11-10 Olympus Optical Co., Ltd. Temperature measuring apparatus for camera
US5412448A (en) * 1990-06-11 1995-05-02 Olympus Optical Co., Ltd. Temperature compensation apparatus for camera

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2737162C2 (en) * 1977-08-18 1981-09-24 Eltro GmbH, Gesellschaft für Strahlungstechnik, 6900 Heidelberg Device for adjusting optical elements
JPS54154382A (en) * 1978-05-25 1979-12-05 Canon Inc Photo sensor device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57177107A (en) * 1981-04-24 1982-10-30 Hamamatsu Tv Kk Automatic focusing device
JPS60163046A (en) * 1984-02-03 1985-08-24 Nippon Kogaku Kk <Nikon> Projection exposing optical device
JPS60235110A (en) * 1984-05-07 1985-11-21 Minolta Camera Co Ltd Temperature compensating device of focus detecting device
US4828383A (en) * 1985-11-11 1989-05-09 Olympus Optical Co., Ltd. Range-finding optical system
JPH01288806A (en) * 1988-05-16 1989-11-21 Minolta Camera Co Ltd Device for correcting lens back fluctuation in camera
US4982216A (en) * 1988-05-16 1991-01-01 Minolta Camera Kabushiki Kaisha Focusing device of a camera
US5162836A (en) * 1990-03-20 1992-11-10 Olympus Optical Co., Ltd. Temperature measuring apparatus for camera
US5412448A (en) * 1990-06-11 1995-05-02 Olympus Optical Co., Ltd. Temperature compensation apparatus for camera

Also Published As

Publication number Publication date
DE3139593A1 (en) 1982-05-27

Similar Documents

Publication Publication Date Title
US3532045A (en) Method of and means for focusing an optical system
JPS54155832A (en) Focusing detector
JPS5764217A (en) Automatic focusing camera
JPS57186872A (en) Auto-focusing device of video camera
JPS57108810A (en) Focus detector
JPS5764204A (en) Automatic focus controller
GB1182934A (en) An Improved Photographic Exposure Meter.
JPS5428133A (en) Optical path extension device with focus detection function
US4595271A (en) In-focus state detection device
JPS5773709A (en) Focusing-point detector
JPS5540447A (en) Image correcting method in zoom lens
JPS5299820A (en) Focusing glass
GB1224407A (en) Continuous focusing mechanism using triangulation principle
JPS6360416A (en) Automatic focusing device
GB1448424A (en) Focus detecting apparatus
EP0039458A1 (en) Light supply device for endoscope
JPS57154224A (en) Focus detecting device of camera
JPS57146231A (en) Camera having plural incorporated lenses
JPS57105712A (en) Automatic focus controlling device
JPS6459311A (en) Automatic focusing camera
JPS6459312A (en) Automatic focusing camera
JPS55106425A (en) Single-lens reflex camera
JPS5734509A (en) Automatic focusing detector of camera
JPS55146425A (en) Automatic focus control unit
JPS5726812A (en) Focus control device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060330

RD03 Notification of appointment of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7423

Effective date: 20070313

A131 Notification of reasons for refusal

Effective date: 20070904

Free format text: JAPANESE INTERMEDIATE CODE: A131

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20070823

A601 Written request for extension of time

Effective date: 20071204

Free format text: JAPANESE INTERMEDIATE CODE: A601

A602 Written permission of extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A602

Effective date: 20080121

A521 Written amendment

Effective date: 20071227

Free format text: JAPANESE INTERMEDIATE CODE: A523

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A711

Effective date: 20080416

A131 Notification of reasons for refusal

Effective date: 20080624

Free format text: JAPANESE INTERMEDIATE CODE: A131

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20080918

A602 Written permission of extension of time

Effective date: 20081027

Free format text: JAPANESE INTERMEDIATE CODE: A602

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20081023

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20081030

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20081216

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Effective date: 20090113

Free format text: JAPANESE INTERMEDIATE CODE: A61

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120123

Year of fee payment: 3

R150 Certificate of patent (=grant) or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (prs date is renewal date of database)

Year of fee payment: 4

Free format text: PAYMENT UNTIL: 20130123

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250