JPS5523631A - Focus detector for pick up unit - Google Patents
Focus detector for pick up unitInfo
- 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
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
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)
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 |
-
1978
- 1978-08-07 JP JP9601278A patent/JPS5523631A/en active Granted
Cited By (6)
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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