GB2013353B - Focus control system for variable focus lenses - Google Patents
Focus control system for variable focus lensesInfo
- Publication number
- GB2013353B GB2013353B GB7848907A GB7848907A GB2013353B GB 2013353 B GB2013353 B GB 2013353B GB 7848907 A GB7848907 A GB 7848907A GB 7848907 A GB7848907 A GB 7848907A GB 2013353 B GB2013353 B GB 2013353B
- Authority
- GB
- United Kingdom
- Prior art keywords
- focus
- control system
- lenses
- variable
- focus control
- 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
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
- G02B7/32—Systems for automatic generation of focusing signals using parallactic triangle with a base line using active means, e.g. light emitter
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
- G01S15/08—Systems for measuring distance only
- G01S15/10—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US86585277A | 1977-12-30 | 1977-12-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2013353A GB2013353A (en) | 1979-08-08 |
GB2013353B true GB2013353B (en) | 1982-05-19 |
Family
ID=25346383
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7848907A Expired GB2013353B (en) | 1977-12-30 | 1978-12-18 | Focus control system for variable focus lenses |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS54109837A (en) |
AT (1) | AT377101B (en) |
AU (1) | AU525816B2 (en) |
CA (1) | CA1122455A (en) |
CH (1) | CH637222A5 (en) |
DE (1) | DE2856573A1 (en) |
FR (1) | FR2413680A1 (en) |
GB (1) | GB2013353B (en) |
IE (1) | IE48251B1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1151929A (en) * | 1980-03-03 | 1983-08-16 | Kenneth C. Kiesel | Focusing system and method with adjustment for lens depth of focus |
JPS59125718A (en) * | 1983-01-06 | 1984-07-20 | Canon Inc | Copying device |
WO2018139168A1 (en) | 2017-01-27 | 2018-08-02 | 富士フイルム株式会社 | Camera system, camera, lens, accessory, and method for detecting camera system accessory |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2105288B2 (en) * | 1970-02-14 | 1973-03-15 | Kabushiki Kaisha Ricoh, Tokio | CAMERA WITH AUTOMATIC FOCUSING |
US3917395A (en) * | 1973-06-28 | 1975-11-04 | Honeywell Inc | Control circuit for photographic apparatus |
CA1099554A (en) * | 1976-10-04 | 1981-04-21 | Polaroid Corporation | Automatic range finding and focussing camera |
-
1978
- 1978-12-18 GB GB7848907A patent/GB2013353B/en not_active Expired
- 1978-12-28 DE DE19782856573 patent/DE2856573A1/en not_active Ceased
- 1978-12-28 CH CH1320978A patent/CH637222A5/en not_active IP Right Cessation
- 1978-12-28 IE IE256378A patent/IE48251B1/en unknown
- 1978-12-29 CA CA318,864A patent/CA1122455A/en not_active Expired
- 1978-12-29 JP JP16438678A patent/JPS54109837A/en active Pending
-
1979
- 1979-01-02 AT AT1279A patent/AT377101B/en not_active IP Right Cessation
- 1979-01-02 FR FR7900019A patent/FR2413680A1/en active Granted
- 1979-01-02 AU AU43062/79A patent/AU525816B2/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
AT377101B (en) | 1985-02-11 |
JPS54109837A (en) | 1979-08-28 |
DE2856573A1 (en) | 1979-07-05 |
ATA1279A (en) | 1984-06-15 |
CH637222A5 (en) | 1983-07-15 |
CA1122455A (en) | 1982-04-27 |
AU4306279A (en) | 1979-07-05 |
FR2413680A1 (en) | 1979-07-27 |
AU525816B2 (en) | 1982-12-02 |
FR2413680B1 (en) | 1983-11-18 |
IE782563L (en) | 1979-06-30 |
IE48251B1 (en) | 1984-11-14 |
GB2013353A (en) | 1979-08-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |