DE4406243A1 - Automatic electronic flash appts. for photographic camera - Google Patents

Automatic electronic flash appts. for photographic camera

Info

Publication number
DE4406243A1
DE4406243A1 DE4406243A DE4406243A DE4406243A1 DE 4406243 A1 DE4406243 A1 DE 4406243A1 DE 4406243 A DE4406243 A DE 4406243A DE 4406243 A DE4406243 A DE 4406243A DE 4406243 A1 DE4406243 A1 DE 4406243A1
Authority
DE
Germany
Prior art keywords
flash
appts
indirect
electronic flash
photographic camera
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
Application number
DE4406243A
Other languages
German (de)
Other versions
DE4406243C2 (en
Inventor
Thomas Flohrschuetz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE4406243A priority Critical patent/DE4406243C2/en
Publication of DE4406243A1 publication Critical patent/DE4406243A1/en
Application granted granted Critical
Publication of DE4406243C2 publication Critical patent/DE4406243C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2215/00—Special procedures for taking photographs; Apparatus therefor
    • G03B2215/05—Combinations of cameras with electronic flash units
    • G03B2215/0503—Built-in units
    • G03B2215/0507—Pop-up mechanisms
    • G03B2215/051—Pop-up mechanisms with movable reflector, e.g. change of illumination angle or illumination direction
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2215/00—Special procedures for taking photographs; Apparatus therefor
    • G03B2215/05—Combinations of cameras with electronic flash units
    • G03B2215/0514—Separate unit
    • G03B2215/0517—Housing
    • G03B2215/0553—Housing with second integrated flash

Abstract

The possibility of indirect flash, reflected from a white ceiling, in suitable conditions is introduced by the incorporation of a double flash tube with automatic control and an appropriately modified reflector. One of the tubes radiates conventionally in the forward direction, and the flash from the other tube is angled upwards. Alternatively a single tube may be moved between two positions by a servomotor. A preliminary flash can ascertain whether the environment and the film sensitivity are suitable for indirect flash exposure.

Description

Es ist bekannt, daß das direkte Blitzen in Aufnahmerichtung eine Reihe gravierender Mängel aufweist, hauptsächlich Rot­ augen und ungute Ausleuchtung (Schlagschatten). Kleine Au­ tomatikkameras verwenden gegen die Rotaugen einen Vorblitz, mit zweifelhaftem Ergebnis. Eine deutliche Verbesserung ergibt sich hingegen, wenn indirekt, z. B. gegen eine weiße Zimmerdecke, geblitzt wird. Teure, separate Blitzgeräte haben daher einen schwenkbaren Blitzkopf. Für kleine Auto­ matikkameras ist dies nicht möglich, weil bei ungünstigen Raumverhältnissen oder im Freien diese Methode natürlich nicht anwendbar ist. Sie hat jedoch so viele Vorteile, daß sie auch für diese Kameras einsetzbar sein sollte.It is known that direct flashing in the shooting direction has a number of serious defects, mainly red eyes and bad lighting (drop shadow). Little Au tomato cameras use a pre-flash against the roaches, with dubious result. A significant improvement results, however, if indirectly, for. B. against a white Ceiling, is flashed. Expensive, separate flash units therefore have a swiveling flash head. For small cars This is not possible for matik cameras, because with unfavorable ones Of space or outdoors this method of course is not applicable. However, it has so many advantages that it should also be usable for these cameras.

Dafür ist eine Möglichkeit nötig, die Blitzrichtung zu wechseln, sowie eine Steuerung, die entscheidet, ob die Verhältnisse ein indirektes Blitzen zulassen; hier wird der Vorblitz verwendet, der ohnehin schon fester Bestandteil der Kameras ist. Gemessen kann mit dem ohnehin vorhandenen Sensor für die Steuerung des Blitzlichts werden.This requires a way to close the flash direction switch, as well as a controller that decides whether the Conditions allow indirect flashing; here will the pre-flash used, which is already an integral part the cameras is. Can be measured with the existing one Sensor for controlling the flash.

Dem angepeilten Einsatzgebiet entspricht die im Patentan­ spruch angegebene Lösung mit einer doppelten Blitzröhre sicher am ehesten. Der Reflektor ist entsprechend zu modi­ fizieren, im Prinzip ließen sich natürlich auch einfach zwei getrennte Blitzgeräte verwenden oder ein Servomotor. Wegen der Möglichkeit von farbigen Zimmerdecken sollte der indirekte Blitz abschaltbar sein.The intended field of application corresponds to that in Patentan Say indicated solution with a double flash tube most likely. The reflector has to be modified accordingly in principle, of course, can also be easily done use two separate flash units or a servo motor. Because of the possibility of colored ceilings the indirect flash can be switched off.

Denkbar ist auch, bei schwierigen Lichtverhältnissen beide Blitze zu zünden.It is also conceivable, in difficult lighting conditions, both To lightning.

Auf die angegebene Weise kann erreicht werden, daß mit dem von den Automatikkameras her bekannten Komfort völlig ohne Zutun des Fotografen wann immer möglich optimal ausge­ leuchtete Aufnahmen entstehen.In the manner specified it can be achieved that with the Comfort known from the automatic cameras completely without The photographer's efforts are optimally made whenever possible illuminated recordings are made.

Claims (1)

Verbesserter automatischer Elektronenblitz für Fotoappara­ te zur Vermeidung des "Rotaugeneffekts" und von Schlag­ schatten, dadurch gekennzeichnet, daß das Elektronenblitzgerät die Möglichkeit zur Varia­ tion der Abstrahlrichtung erhält, z. B. mit zwei Entladungs­ röhren, so daß eine konventionell nach vorne (direkt) ab­ strahlt, die zweite schräg nach oben (indirekt), oder mit Servomotor. Mit Hilfe eines Vorblitzes nach schräg oben wird gemessen, ob Räumlichkeiten und Filmempfindlichkeit eine Aufnahme mit indirektem Blitz zulassen. Aufgrund des Meßergebnisses wird der Hauptblitz je nachdem direkt oder indirekt ausgelöst.Improved automatic electron flash for cameras te to avoid the "red-eye effect" and shadow, characterized in that the electron flash device is given the option to vary the direction of radiation, z. B. with two discharge tubes, so that one radiates conventionally from the front (directly), the second obliquely upwards (indirectly), or with a servo motor. With the help of a pre-flash diagonally upwards, it is measured whether the premises and film sensitivity allow a picture with indirect flash. The main flash is triggered directly or indirectly, depending on the measurement result.
DE4406243A 1994-02-25 1994-02-25 Control device for automatic selection between direct and indirect flash direction Expired - Fee Related DE4406243C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4406243A DE4406243C2 (en) 1994-02-25 1994-02-25 Control device for automatic selection between direct and indirect flash direction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4406243A DE4406243C2 (en) 1994-02-25 1994-02-25 Control device for automatic selection between direct and indirect flash direction

Publications (2)

Publication Number Publication Date
DE4406243A1 true DE4406243A1 (en) 1995-10-05
DE4406243C2 DE4406243C2 (en) 1996-04-18

Family

ID=6511260

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4406243A Expired - Fee Related DE4406243C2 (en) 1994-02-25 1994-02-25 Control device for automatic selection between direct and indirect flash direction

Country Status (1)

Country Link
DE (1) DE4406243C2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3014848C2 (en) * 1979-04-17 1983-03-03 Fuji Koeki Corp. Electric flash
DE3247241C2 (en) * 1981-12-28 1987-12-10 Canon K.K., Tokio/Tokyo, Jp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3014848C2 (en) * 1979-04-17 1983-03-03 Fuji Koeki Corp. Electric flash
DE3247241C2 (en) * 1981-12-28 1987-12-10 Canon K.K., Tokio/Tokyo, Jp

Also Published As

Publication number Publication date
DE4406243C2 (en) 1996-04-18

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8122 Nonbinding interest in granting licences declared
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee