JPS6248202B2 - - Google Patents
Info
- Publication number
- JPS6248202B2 JPS6248202B2 JP5450079A JP5450079A JPS6248202B2 JP S6248202 B2 JPS6248202 B2 JP S6248202B2 JP 5450079 A JP5450079 A JP 5450079A JP 5450079 A JP5450079 A JP 5450079A JP S6248202 B2 JPS6248202 B2 JP S6248202B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- circuit
- absolute value
- optical system
- 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.)
- Expired
Links
- 230000003287 optical effect Effects 0.000 claims description 27
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 40
- 229910052742 iron Inorganic materials 0.000 description 20
- 238000010586 diagram Methods 0.000 description 9
- 239000003990 capacitor Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000004397 blinking Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Landscapes
- Measurement Of Optical Distance (AREA)
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5450079A JPS55146425A (en) | 1979-05-01 | 1979-05-01 | Automatic focus control unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5450079A JPS55146425A (en) | 1979-05-01 | 1979-05-01 | Automatic focus control unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55146425A JPS55146425A (en) | 1980-11-14 |
JPS6248202B2 true JPS6248202B2 (zh) | 1987-10-13 |
Family
ID=12972346
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5450079A Granted JPS55146425A (en) | 1979-05-01 | 1979-05-01 | Automatic focus control unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55146425A (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57144409A (en) * | 1981-03-03 | 1982-09-07 | West Electric Co Ltd | Distance detector |
JPS5893040A (ja) * | 1981-11-30 | 1983-06-02 | Canon Inc | カメラ用測距装置 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5533005B2 (zh) * | 1972-09-12 | 1980-08-28 |
-
1979
- 1979-05-01 JP JP5450079A patent/JPS55146425A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS55146425A (en) | 1980-11-14 |
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