JPS5732407A - Automatic focus adjusting device - Google Patents
Automatic focus adjusting deviceInfo
- Publication number
- JPS5732407A JPS5732407A JP10757580A JP10757580A JPS5732407A JP S5732407 A JPS5732407 A JP S5732407A JP 10757580 A JP10757580 A JP 10757580A JP 10757580 A JP10757580 A JP 10757580A JP S5732407 A JPS5732407 A JP S5732407A
- Authority
- JP
- Japan
- Prior art keywords
- distance
- ring
- switch
- value
- output
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
PURPOSE:To eliminate the erroneous setting of a distance by generating an output signal when the set value of a distance ring is less than a prescribed distance value and by driving the distance ring automatically up to a prescribed distance value independently of a distance measurement signal. CONSTITUTION:When a distance value set by a distance ring is within a manual range and an object at an automatic-range position is to be photographed, turning a switch S0 on with an operation button inputs information on the distance of the object, measured by a line sensor IC1, to an integrated circuit IC3 to obtain a distance measurement signal. Since the distance set by the distance ring 1 is within the manual range, a switch SW1 is kept on by being pushed by the flank 1a of the distance ring 1; the signals of output lines (a) and (c) go to ''1''s without reference to a comparison output, and those of lines (b) and (d) to ''1''s. Consequently, a motor M turns as shown by an arrow to change the switch SW1 from a contact M over to a contact A, and then a drivng circuit DDC is controlled by the comparison output to perform focusing operation.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10757580A JPS5732407A (en) | 1980-08-04 | 1980-08-04 | Automatic focus adjusting device |
| US06/287,698 US4402586A (en) | 1980-08-04 | 1981-07-28 | Focusing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10757580A JPS5732407A (en) | 1980-08-04 | 1980-08-04 | Automatic focus adjusting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5732407A true JPS5732407A (en) | 1982-02-22 |
| JPS6350681B2 JPS6350681B2 (en) | 1988-10-11 |
Family
ID=14462644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10757580A Granted JPS5732407A (en) | 1980-08-04 | 1980-08-04 | Automatic focus adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5732407A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61112320U (en) * | 1984-12-27 | 1986-07-16 | ||
| JPS62257841A (en) * | 1986-05-01 | 1987-11-10 | 東レ株式会社 | Laminated film |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54113334A (en) * | 1978-02-24 | 1979-09-04 | Nippon Chemical Ind | Apparatus for detecting focus point position |
-
1980
- 1980-08-04 JP JP10757580A patent/JPS5732407A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54113334A (en) * | 1978-02-24 | 1979-09-04 | Nippon Chemical Ind | Apparatus for detecting focus point position |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61112320U (en) * | 1984-12-27 | 1986-07-16 | ||
| JPS62257841A (en) * | 1986-05-01 | 1987-11-10 | 東レ株式会社 | Laminated film |
| JPH0550390B2 (en) * | 1986-05-01 | 1993-07-28 | Toray Industries |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6350681B2 (en) | 1988-10-11 |
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