JPS5523631A - Focus detector for pick up unit - Google Patents

Focus detector for pick up unit

Info

Publication number
JPS5523631A
JPS5523631A JP9601278A JP9601278A JPS5523631A JP S5523631 A JPS5523631 A JP S5523631A JP 9601278 A JP9601278 A JP 9601278A JP 9601278 A JP9601278 A JP 9601278A JP S5523631 A JPS5523631 A JP S5523631A
Authority
JP
Japan
Prior art keywords
light
component
pick
focus
incident light
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
JP9601278A
Other languages
Japanese (ja)
Other versions
JPS6115406B2 (en
Inventor
Masaru Shimada
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP9601278A priority Critical patent/JPS5523631A/en
Publication of JPS5523631A publication Critical patent/JPS5523631A/en
Publication of JPS6115406B2 publication Critical patent/JPS6115406B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE: To ensure to detect the condition of focus matching of the objective image up to a near distance without reducing the amount of main light, by locating the spectrum means in the incident light path, and performing the detection of focus through the use of the components of ineffective light in the incident light obtained from this.
CONSTITUTION: The spectral means which separates the input light into effective light component and ineffective light component on the pick up sensitivity of the pick up section 21, such as the dichroic mirror 25 which passes the visual light component L and reflects the infrared ray component I, is placed in the incident light path. The component L is emitted on the pick up section 21 without reducing the amount of light, the component I is emitted to the photo electric conversion element group 26 at the focus detection section 22, the focus matching condition of the objective image drawn by the ineffective light component in the incident light separated 25 is detected 22, and the pick up lens 24 is moved by operating the rollet mechanism 23 with the detected 22 output signal, to automatically adjust the focus of TV camera.
COPYRIGHT: (C)1980,JPO&Japio
JP9601278A 1978-08-07 1978-08-07 Focus detector for pick up unit Granted JPS5523631A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9601278A JPS5523631A (en) 1978-08-07 1978-08-07 Focus detector for pick up unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9601278A JPS5523631A (en) 1978-08-07 1978-08-07 Focus detector for pick up unit

Publications (2)

Publication Number Publication Date
JPS5523631A true JPS5523631A (en) 1980-02-20
JPS6115406B2 JPS6115406B2 (en) 1986-04-24

Family

ID=14153276

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9601278A Granted JPS5523631A (en) 1978-08-07 1978-08-07 Focus detector for pick up unit

Country Status (1)

Country Link
JP (1) JPS5523631A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55111928A (en) * 1979-02-21 1980-08-29 Ricoh Co Ltd Automatic focusing device
JPS5913206A (en) * 1982-07-15 1984-01-24 Hitachi Denshi Ltd Focusing control device
JPS5950671A (en) * 1982-09-16 1984-03-23 Olympus Optical Co Ltd Method for displaying focus information of television camera or the like
JPS5994711A (en) * 1982-11-22 1984-05-31 Olympus Optical Co Ltd Automatic focus detector
JPS62147417A (en) * 1985-12-20 1987-07-01 Matsushita Electric Ind Co Ltd Video camera device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55111928A (en) * 1979-02-21 1980-08-29 Ricoh Co Ltd Automatic focusing device
JPS5913206A (en) * 1982-07-15 1984-01-24 Hitachi Denshi Ltd Focusing control device
JPS5950671A (en) * 1982-09-16 1984-03-23 Olympus Optical Co Ltd Method for displaying focus information of television camera or the like
JPH0548028B2 (en) * 1982-09-16 1993-07-20 Olympus Optical Co
JPS5994711A (en) * 1982-11-22 1984-05-31 Olympus Optical Co Ltd Automatic focus detector
JPS62147417A (en) * 1985-12-20 1987-07-01 Matsushita Electric Ind Co Ltd Video camera device

Also Published As

Publication number Publication date
JPS6115406B2 (en) 1986-04-24

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