DE1956014C3 - device for distance measurement on camera lenses - Google Patents
device for distance measurement on camera lensesInfo
- Publication number
- DE1956014C3 DE1956014C3 DE1956014A DE1956014A DE1956014C3 DE 1956014 C3 DE1956014 C3 DE 1956014C3 DE 1956014 A DE1956014 A DE 1956014A DE 1956014 A DE1956014 A DE 1956014A DE 1956014 C3 DE1956014 C3 DE 1956014C3
- Authority
- DE
- Germany
- Prior art keywords
- depth
- field
- transmitter
- receiver
- imaging system
- 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
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C3/00—Measuring distances in line of sight; Optical rangefinders
- G01C3/10—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with variable angles and a base of fixed length in the observation station, e.g. in the instrument
-
- 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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/46—Indirect determination of position data
-
- 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
Description
Die Erfindung bezieht sich auf eine Einrichtung gemäß dem Oberbegriff des Anspruchs 1, wie sie aus der FR-PS 15 34 560 bekannt ist.The invention relates to a device according to the preamble of claim 1, as it is from FR-PS 15 34 560 is known.
Bei der bekannten Einrichtung nach der FR-PS 34 560 ist als Sender eine Lichtquelle vorgesehen, welche durch ein optisches System auf dem Objekt abgebildet wird. Der Empfänger weist ein zweites optisches System auf, in dessen Bildebene eine Schneide angeordnet ist. Auf der dem optischen System abgewendeten Seite der Schneide sind symmetrisch zur optischen Achse zwei Photowiderslände angeordnet. Wird der auf dem Objekt entworfene Lichtfleck in der Ebene der oben genannten Schneide abgebildet, so werden beide Photowiderstände gleichmäßig beleuchtet. Wird der Lichtfleck hingegen vor der Schneide abgebildet, so wird bevorzugt der eine Photowiderstand ■"> beleuchtet. Erfolgt die Abbildung hinter der Schneide, so empfängt bevorzugt der andere Photowiderstand Licht. Ein Intensitätsvergleich der auf die beiden Photowiderstände fallenden Lichtmenge kann zur Steuerung eines Verstellmotors ausgenützt werden, derIn the known device according to FR-PS 34 560, a light source is provided as a transmitter, which is imaged on the object by an optical system. The recipient has a second optical system, in the image plane of which a cutting edge is arranged. On the optical system facing away from the cutting edge, two photoresponses are arranged symmetrically to the optical axis. If the light spot designed on the object is mapped in the plane of the cutting edge mentioned above, then both photoresistors are evenly illuminated. If, on the other hand, the light spot is in front of the cutting edge one photo resistor is preferably illuminated. If the image is behind the cutting edge, the other photoresistor receives light preferentially. An intensity comparison of the on the two The amount of light falling from photoresistors can be used to control an adjusting motor
ι» das optische System des Empfängers längs der optischen Achse so lange verschiebt, bis auf beide Photowiderstände die gleiche Lichtmenge fällt. Die Empfindlichkeit dieser Entfernungsmeßeinrichtung wird primär durch die Apertur des optischen Systemsι »the optical system of the receiver along the shifts the optical axis until the same amount of light falls on both photoresistors. the The sensitivity of this distance measuring device is primarily determined by the aperture of the optical system
|:> des Empfängers bestimmt. Um in einem Entfernungsbereich von beispielsweise 1 bis 20 m eine genügend genaue Messung zu erhalten, ist es notwendig, ein optisches System mit relativ großem Öffnungsverhältnis zu wählen. Dies bedingt jedoch nicht nur einen großen |: > of the recipient determined. In order to obtain a sufficiently accurate measurement in a distance range of, for example, 1 to 20 m, it is necessary to choose an optical system with a relatively large aperture ratio. However, this does not only require a large one
-'» Aufwand (zumal auch die Forderung besteht, daß die Aberrationen des optischen Systems sehr klein gehalten werden müssen), sondern ergib! auch relativ große Gesamtabmessungen des Gerätes. Darüber hinaus ist eine automatische Entfernungsmessung im Interesse- '' Expenditure (especially since there is also the requirement that the aberrations of the optical system must be kept very small), but give! also relatively large overall dimensions of the device. In addition, automatic distance measurement is of interest
-'"> einer optimalen Bildgestaltung nicht immer günstig. Andererseits ist bei einer manuellen Entfernungsmessung die Kenntnis der absoluten Objektentferiuing vielfach unwichtig, da für den Benutzer einer Kamera nur von Interesse ist, ob seine Bilder scharf oder unscharf werden.- '"> not always favorable for optimal image design. On the other hand, manual distance measurement requires knowledge of the absolute object distance often unimportant, since for the user of a camera it is only of interest whether his images are sharp or not become blurred.
Zur Messung des Bodenabstandes eines Luftkissenfahrzeuges ist es beispielsweise bereits bekannt (kanadische Patentschrift / 28 860), unterschiedlichen Entfernungen je einen Wandler zuzuordnen, wobei derFor example, it is already known to measure the distance to the ground of a hovercraft (Canadian Patent / 28 860) to assign a transducer to different distances, with the
f' Wandler dann ein Signal abgibt, wenn er von der von einer .Sendestation ausgehenden und vom Objekt, dessen Entfernung gemessen werden soll, reflektierten Strahlung getroffen wird. Um objektseitig jener Raumtiefe zu entsprechen, die gleich der jeweiligenf 'converter then emits a signal when it is different from that of emanating from a transmitting station and reflected from the object whose distance is to be measured Radiation is hit. In order to correspond to that spatial depth on the object side, which is the same as the respective
■"' Einstellung des zugeordneten Schärfentiefenbereiches des Objektivs ist, müssen demnach entsprechend viele Wandler vorgesehen sein. Überdies verlangt diese Messung eine komplizierte Anordnung in der Sendestation, da die Strahlung so lange ausgesendet werden muß,■ "'Setting of the assigned depth of field of the lens, a corresponding number of converters must therefore be provided. Moreover, this requires Measurement a complicated arrangement in the transmitting station, since the radiation has to be transmitted for so long
·"' bis die Entfernungsanzeige von der Bedienungsperson abgelesen wurde. Erst dann kann das Objektiv entsprechend des gemessenen Wertes auf das Objekt eingestellt werden. Für Fahrzeuge mag eine genaue Entfernungsmessung zwar von Interesse sein, doch ist es· "'To the distance display from the operator was read. Only then can the lens point to the object according to the measured value can be set. Accurate distance measurement may be of interest to vehicles, but it is
1(1 bei photographischen oder kinematographischen Aufnahmen unzweckmäßig, im Falle von sich bewegenden Objektiven ständig die Schärfe nachzustellen, wenn die Schärfentiefe ohnehin ausreichend ist. 1 (1 inexpedient for photographic or cinematographic recordings, constantly adjusting the focus in the case of moving lenses if the depth of field is sufficient anyway.
Die Aufgabe der Erfindung besteht demgegenüberThe object of the invention consists in contrast
">r> darin, eine Einrichtung der eingangs erwähnten Art zu schaffen, die dem KamerabenüUer eine einfache Anzeige darüber ermöglicht, ob sich das Meßobjekt im Schärfentiefenraum des Kameraobjektivs befindet."> r > in creating a device of the type mentioned above, which allows the camera operator a simple display of whether the measurement object is in the depth of field of the camera lens.
Die Aufgabe wird erfindungsgemäß durch dieThe object is achieved according to the invention by
>° kennzeichnenden Merkmale des Anspruchs 1 gelöst.> ° characterizing features of claim 1 solved.
Vorteilhafte Weiterbildungen der Einrichtung nach Anspruch 1 ergeben sich aus den Unteransprüchen.Advantageous further developments of the device according to claim 1 emerge from the subclaims.
Mit Hilfe der erfindungsgemäßen Einrichtung erhält der Kamerabenützer eine digitale |a-Nein-AnzeigeWith the aid of the device according to the invention, the camera user receives a digital | a-no display
>r> darüber, ob das Meßobjekt innerhalb des .Schärfentiefenbereichs
ist, so daß genau erkennbar ist, ob das Objektiv in der richtigen Einstellung ist oder nicht.
Die I ι !nulling wird anhainl der Zeichnungen luiher>r> about whether the object to be measured is within the depth of field, so that it can be seen exactly whether the lens is in the correct setting or not.
The I ι! Nulling is luiher attached to the drawings
erläutert Es zeigtexplained it shows
Fig. 1 eine schematische Ansicht einer erfindungsgemäßen Einrichtung, undFig. 1 is a schematic view of an inventive Establishment, and
Fig. 2 eine Abwandlung der Einrichtung nach Fig. 1.FIG. 2 shows a modification of the device according to FIG. 1.
Die in Fig. 1 dargestellte Einrichtung umfaßt einen .Schärfentiefenrechner 87, der mit einer Entiernungseinstelleinrichtung 83, einer Rrennweiteneinstelleinrichtung 84 und einem Vcrstellsystei:; 85 für die Objektivblende 86 eines Kaineraobjektivs 82 gekoppelt ist. Der Schärfentiefenrechner 87 kann in Form eines mechanischen Rechengeiricbcs oder auch in Form einer elektrischen Rechenschaltung ausgebildet sein. Der Schärfentiefenrechner 87 steuert ein Ritzel 88, welches zwei Zahnstangen 89 und 90 gegensinnig verstellt. Die beiden Zahnstangen 89 und 90 (ragen je eine Photodiode 91 bzw 92. Die beiden Photodioden 91, 92 werden durch den Schärfentiefenrechner 87 so verstellt, daß sie jeweils den außerhalb des Schärfentiefetiraiiincs des Kameraobjektivs 82 liegenden Räumen enispre chui. Die Photodiode 92 ist dem Raum vor dem Schärfentiefenbereich zugeordnet, während die Photo Jiode 91 dem hinter dem Siharfe/iliefenraii/n üngrcn zenden Bereich entspricht. Zur Messung wird von einer Lumineszenz-Diode 73 über eine Linse 72 ein Lichtstrahl auf das nicht dargestellte Objektiv ausgesendet, wo er reflektiert wird und auf die Linse 76 des Empfängers fällt, in deren Bildebene die Dioden 91, 92 angeordnet sind. Empfängt die Diode 91 oder 92 einen Lichtinipuls, so bedeutet dies, daß sich das Aufnahmeobjekt außerhalb des Schärfentiefenbereiches belindet. Diese Abweichung wird über geeignete Signaleinrichtungen als ]a-Nein-Aussage zur Anzeige gebracht.The device shown in FIG. 1 comprises a depth of field computer 87 which is equipped with an Entiernungseinstelleinrichtung 83, a race distance adjustment device 84 and a Vcrstellsystei :; 85 for the objective diaphragm 86 of a Kainera objective 82 is coupled. The depth of field calculator 87 can be designed in the form of a mechanical computing device or also in the form of an electrical computing circuit. The depth of field computer 87 controls a pinion 88 which adjusts two racks 89 and 90 in opposite directions. The two racks 89 and 90 (each project a photodiode 91 and 92 respectively. The two photodiodes 91, 92 are adjusted by the depth of field computer 87 so that they each correspond to the spaces outside the depth of field of the camera lens 82. The photodiode 92 is the space assigned before the depth of field, while the photo Jiode 91 corresponds to the collapsing behind the Siharfe / iliefenraii / n üngrcn area. for the measurement of a luminescent diode 73 is emitted a light beam to the not shown lens via a lens 72 where it is reflected and falls on the lens 76 of the receiver, in whose image plane the diodes 91, 92 are arranged. If the diode 91 or 92 receives a light pulse, this means that the subject is outside the depth of field -No statement brought to the display.
Bei der in F i g. 2 dargestellten Abwandlung der Einrichtung nach Fig. 1 verstellt das Ritzel 88 des .Schärfentiefenrechners 87 über zwei Zahnstangen 9i, In the case of the in FIG. 2 shown modification of the device according to FIG. 1 adjusts the pinion 88 of the depth calculator 87 via two racks 9 i,
94 Blenden 95 und 96 die vor einer Photodiode 97 bzw. einem Photowiderstand angeordnet sind. Die Blenden94 diaphragms 95 and 96 in front of a photodiode 97 or a photoresistor are arranged. The bezels
95 und 96 werden dabei so gesteuert, daß ihre Kanten den Grenzen des Schärfentiefenbereiches entsprechen. Befindet sich das Objekt außerhalb ties Schärfentiefenruumes, so wird der vom Sender 71 am Objekt erzeugte Lichtfleck auf der Blende 95 oder 96 abgcbild-.-i. Bei Ausbleiben eines Empfangssignales kann eine gci-'imeie Warneinrichtung ausgelöst werden.95 and 96 are controlled so that their edges correspond to the limits of the depth of field. If the object is outside the depth of field, the light spot generated by the transmitter 7 1 on the object is displayed on the diaphragm 95 or 96 -.- i. If there is no reception signal, a gci-'imeie warning device can be triggered.
I iicr/u I Bl;ilt ZeichnungenI iicr / u I Bl; ilt drawings
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT1145268A AT301331B (en) | 1968-11-25 | 1968-11-25 | Device for distance measurement |
Publications (3)
Publication Number | Publication Date |
---|---|
DE1956014A1 DE1956014A1 (en) | 1970-10-01 |
DE1956014B2 DE1956014B2 (en) | 1980-10-02 |
DE1956014C3 true DE1956014C3 (en) | 1981-05-21 |
Family
ID=3628796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1956014A Expired DE1956014C3 (en) | 1968-11-25 | 1969-11-07 | device for distance measurement on camera lenses |
Country Status (7)
Country | Link |
---|---|
US (1) | US3723003A (en) |
JP (1) | JPS4819250B1 (en) |
AT (1) | AT301331B (en) |
CH (1) | CH517934A (en) |
DE (1) | DE1956014C3 (en) |
FR (1) | FR2027548A1 (en) |
GB (1) | GB1291066A (en) |
Families Citing this family (59)
Publication number | Priority date | Publication date | Assignee | Title |
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US3936187A (en) * | 1972-07-19 | 1976-02-03 | Konishiroku Photo Industry Co., Ltd. | Distance measuring device |
JPS5533005B2 (en) * | 1972-09-12 | 1980-08-28 | ||
US3875401B1 (en) * | 1973-07-09 | 1994-02-01 | Honeywell Inc. | Focus detecting apparatus |
US3857031A (en) * | 1973-10-15 | 1974-12-24 | Nasa | Automatic focus control for facsimile cameras |
US3846629A (en) * | 1973-12-06 | 1974-11-05 | Honeywell Inc | Sensitivity balancing apparatus for photo responsive detecting circuits |
US3846628A (en) * | 1973-12-06 | 1974-11-05 | Honeywell Inc | Sensitivity balancing apparatus for photo responsive detecting circuits |
US4123650A (en) * | 1974-02-26 | 1978-10-31 | Kazuya Hosoe | Range finder system |
US4039824A (en) * | 1974-08-08 | 1977-08-02 | Minolta Camera Kabushiki Kaisha | Focus detecting photoelectric device |
US4040738A (en) * | 1975-03-20 | 1977-08-09 | Gulton Industries, Inc. | Railroad track profile spacing and alignment apparatus |
JPS5833502Y2 (en) * | 1975-04-04 | 1983-07-26 | サンデン株式会社 | Rakanshikikiyouseiku Uenogiyukiyuki |
US3958117A (en) * | 1975-07-15 | 1976-05-18 | Honeywell Inc. | Distance determining and automatic focusing apparatus |
US4103309A (en) * | 1976-05-11 | 1978-07-25 | Fred M. Dellorfano, Jr. | Automatic camera focusing means |
US4065778A (en) * | 1976-06-17 | 1977-12-27 | Eastman Kodak Company | Automatic rangefinder and focusing apparatus |
JPS5322153U (en) * | 1976-07-30 | 1978-02-24 | ||
US4313654A (en) * | 1977-09-06 | 1982-02-02 | Minolta Camera Kabushiki Kaisha | Automatic rangefinder system for photographic camera with light emitting and receiving means |
JPS5461924A (en) * | 1977-10-27 | 1979-05-18 | Minolta Camera Co Ltd | Camera having automatic focus matching device |
JPS5480123A (en) * | 1977-12-09 | 1979-06-26 | Minolta Camera Co Ltd | Camera with automatic focus matching device |
US4251144A (en) * | 1978-03-08 | 1981-02-17 | Minolta Camera Kabushiki Kaisha | Rangefinding system |
JPS54154351A (en) * | 1978-05-25 | 1979-12-05 | Canon Inc | Distance measuring device |
DE2824311C2 (en) * | 1978-06-02 | 1983-03-03 | Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch | Adjustment arrangement for aligning a group of cyclically switched light transmitters or light receivers |
JPS5527987A (en) * | 1978-08-21 | 1980-02-28 | Minolta Camera Co Ltd | Distance measuring instrument |
DE2853003A1 (en) * | 1978-12-07 | 1980-06-26 | Minolta Camera Kk | Range-finder for camera - has semiconductor light emitter and photo receivers mounted on common carrier plate behind lenses |
US5280179A (en) * | 1979-04-30 | 1994-01-18 | Sensor Adaptive Machines Incorporated | Method and apparatus utilizing an orientation code for automatically guiding a robot |
US5164579A (en) * | 1979-04-30 | 1992-11-17 | Diffracto Ltd. | Method and apparatus for electro-optically determining the dimension, location and attitude of objects including light spot centroid determination |
US4373804A (en) * | 1979-04-30 | 1983-02-15 | Diffracto Ltd. | Method and apparatus for electro-optically determining the dimension, location and attitude of objects |
US4373805A (en) * | 1979-05-03 | 1983-02-15 | The Singer Company | Laser altimeter and probe height sensor |
US4288152A (en) * | 1979-08-16 | 1981-09-08 | Minolta Camera Kabushiki Kaisha | Automatic range finder system |
JPS5589703A (en) * | 1979-09-08 | 1980-07-07 | Canon Inc | Distance detector |
JPS614889Y2 (en) * | 1980-01-09 | 1986-02-15 | ||
US4474441A (en) * | 1980-03-04 | 1984-10-02 | Polaroid Corporation | Method and apparatus for controlling exposure by selective use of blocking visible filter |
US4367027A (en) * | 1980-03-12 | 1983-01-04 | Honeywell Inc. | Active auto focus system improvement |
US4317991A (en) * | 1980-03-12 | 1982-03-02 | Honeywell Inc. | Digital auto focus system utilizing a photodetector array |
DE3009534A1 (en) * | 1980-03-12 | 1981-09-17 | Siemens AG, 1000 Berlin und 8000 München | ARRANGEMENT FOR OPTOELECTRONIC DISTANCE MEASUREMENT |
US5112131A (en) * | 1981-02-27 | 1992-05-12 | Diffracto, Ltd. | Controlled machining of combustion chambers, gears and other surfaces |
US4349274A (en) * | 1980-07-23 | 1982-09-14 | General Electric Company | Optical triangulation apparatus and method |
US4357083A (en) * | 1980-10-06 | 1982-11-02 | Polaroid Corporation | Method and apparatus using weighted range signal for controlling photographic functions |
US5940302A (en) * | 1981-02-27 | 1999-08-17 | Great Lakes Intellectual Property | Controlled machining of combustion chambers, gears and other surfaces |
JPS57144409A (en) * | 1981-03-03 | 1982-09-07 | West Electric Co Ltd | Distance detector |
DE3211257A1 (en) * | 1981-03-26 | 1982-11-04 | Minolta Camera K.K., Osaka | Image position detector |
JPS57159073A (en) * | 1981-03-26 | 1982-10-01 | Minolta Camera Co Ltd | Semiconductor position detector |
DE3310601C2 (en) * | 1982-03-24 | 1994-02-10 | Canon Kk | Distance measuring device |
US4470681A (en) * | 1982-09-07 | 1984-09-11 | Polaroid Corporation | Method of and apparatus for detecting range using multiple range readings |
DE3302948C2 (en) * | 1983-01-29 | 1985-01-10 | Wolfgang 3400 Göttingen Brunk | Measuring device for non-contact optical distance measurement |
DE3337251A1 (en) * | 1983-10-13 | 1985-04-25 | Gerd Dipl.-Phys. Dr. 8520 Erlangen Häusler | OPTICAL SCANING METHOD FOR THE THREE-DIMENSIONAL MEASUREMENT OF OBJECTS |
US4655586A (en) * | 1984-03-19 | 1987-04-07 | Honeywell Inc. | Adjustable zone proximity sensor |
US4688933A (en) * | 1985-05-10 | 1987-08-25 | The Laitram Corporation | Electro-optical position determining system |
DE3719235A1 (en) * | 1987-06-09 | 1988-12-22 | Messerschmitt Boelkow Blohm | Method and device for suppressing the influence of accidental reflections on a target which is marked with reflectors |
US5082362A (en) * | 1990-07-02 | 1992-01-21 | General Electric Company | Zoom lens for a variable depth range camera |
US5249013A (en) * | 1990-07-23 | 1993-09-28 | Ricoh Company, Ltd. | Distance measuring device of camera |
DE69128681T2 (en) * | 1990-10-01 | 1998-04-23 | Nikon Corp | Focus detector |
CA2115859C (en) * | 1994-02-23 | 1995-12-26 | Brian Dewan | Method and apparatus for optimizing sub-pixel resolution in a triangulation based distance measuring device |
DE19721105C5 (en) * | 1997-05-20 | 2008-07-10 | Sick Ag | Optoelectronic sensor |
US6094269A (en) * | 1997-12-31 | 2000-07-25 | Metroptic Technologies, Ltd. | Apparatus and method for optically measuring an object surface contour |
US7800758B1 (en) | 1999-07-23 | 2010-09-21 | Faro Laser Trackers, Llc | Laser-based coordinate measuring device and laser-based method for measuring coordinates |
EP1273928A1 (en) * | 2001-07-06 | 2003-01-08 | Leica Geosystems AG | Method and device for suppressing electromagnetic background radiation in an image |
DE10321228B4 (en) * | 2003-04-22 | 2007-01-11 | Valeo Schalter Und Sensoren Gmbh | Optical detection system for vehicles |
DE102004008681A1 (en) * | 2004-02-21 | 2005-09-08 | Eads Space Transportation Gmbh | Method for energy transmission by means of coherent electromagnetic radiation |
US9389486B1 (en) * | 2009-08-03 | 2016-07-12 | Lincoln Global, Inc. | Enclosure device |
CN113438467A (en) * | 2020-03-23 | 2021-09-24 | 致新科技股份有限公司 | Camera module measuring device |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
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CA728860A (en) * | 1966-03-01 | W. Rignall Michael | Distance measuring devices | |
CA790879A (en) * | 1968-07-30 | B. Rosink Wilhelmus | Light conditional focussing or distance measuring | |
FR822388A (en) * | 1936-09-03 | 1937-12-29 | Improvement in optical signaling methods and devices | |
US2339780A (en) * | 1939-12-07 | 1944-01-25 | Bank Royal | Automatic focusing device for cameras |
FR1296011A (en) * | 1961-05-04 | 1962-06-15 | Sud Aviation | Further development of optical telemetry methods and devices |
US3376411A (en) * | 1963-07-23 | 1968-04-02 | Philco Ford Corp | Automatic rangefinder |
FR1396327A (en) * | 1963-10-18 | 1965-04-23 | Sud Aviation | Further development of methods and devices used in optical telemetry |
US3493769A (en) * | 1966-02-15 | 1970-02-03 | Philco Ford Corp | System,including pulse shape discriminator for detecting flaws in transparent material |
US3435744A (en) * | 1966-05-31 | 1969-04-01 | Eastman Kodak Co | Automatic focusing system |
FR1534560A (en) * | 1967-08-23 | 1968-07-26 | Eastman Kodak Co | Optical systems automatic focus adjustment device |
-
1968
- 1968-11-25 AT AT1145268A patent/AT301331B/en not_active IP Right Cessation
-
1969
- 1969-11-07 CH CH1662869A patent/CH517934A/en not_active IP Right Cessation
- 1969-11-07 DE DE1956014A patent/DE1956014C3/en not_active Expired
- 1969-11-18 US US00877738A patent/US3723003A/en not_active Expired - Lifetime
- 1969-11-19 JP JP44092843A patent/JPS4819250B1/ja active Pending
- 1969-11-21 FR FR6940304A patent/FR2027548A1/fr not_active Withdrawn
- 1969-11-25 GB GB57524/69A patent/GB1291066A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3723003A (en) | 1973-03-27 |
DE1956014A1 (en) | 1970-10-01 |
CH517934A (en) | 1972-01-15 |
JPS4819250B1 (en) | 1973-06-12 |
GB1291066A (en) | 1972-09-27 |
AT301331B (en) | 1972-08-25 |
FR2027548A1 (en) | 1970-10-02 |
DE1956014B2 (en) | 1980-10-02 |
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