GB2000307A - Shutter mechanism - Google Patents

Shutter mechanism

Info

Publication number
GB2000307A
GB2000307A GB7827590A GB7827590A GB2000307A GB 2000307 A GB2000307 A GB 2000307A GB 7827590 A GB7827590 A GB 7827590A GB 7827590 A GB7827590 A GB 7827590A GB 2000307 A GB2000307 A GB 2000307A
Authority
GB
United Kingdom
Prior art keywords
spring arm
release member
strike
formed integrally
electric crystal
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
GB7827590A
Other versions
GB2000307B (en
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.)
Kodak Ltd
Original Assignee
Kodak Ltd
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 Kodak Ltd filed Critical Kodak Ltd
Priority to GB7827590A priority Critical patent/GB2000307B/en
Publication of GB2000307A publication Critical patent/GB2000307A/en
Application granted granted Critical
Publication of GB2000307B publication Critical patent/GB2000307B/en
Expired 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
    • G03B15/04—Combinations of cameras with non-electronic flash apparatus; Non-electronic flash units
    • G03B15/0452—Electrical ignition means connected to the shutter
    • G03B15/0463—Piezoelectric ignition mechanisms

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Shutters For Cameras (AREA)

Abstract

A spring arm 6 is formed integrally with a shutter release member 2 and is energised by operation of the release member during an initial part of an exposure cycle. During a latter part of the exposure cycle, the spring arm 6 is released from the energised position to strike a piezo-electric crystal 30 which energises a flash device. In a preferred embodiment, shown in Figure 2, first and second spring arms, 6 and 7 respectively, are formed integrally with the shutter release member 2, the first spring arm 6 being used to strike a piezo electric crystal 30 and the second spring arm 8 being used to drive a shutter blade 34. <IMAGE>
GB7827590A 1977-03-22 1978-06-22 Shutter mechanism Expired GB2000307B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7827590A GB2000307B (en) 1977-03-22 1978-06-22 Shutter mechanism

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1206677 1977-03-22
GB7827590A GB2000307B (en) 1977-03-22 1978-06-22 Shutter mechanism

Publications (2)

Publication Number Publication Date
GB2000307A true GB2000307A (en) 1979-01-04
GB2000307B GB2000307B (en) 1982-01-06

Family

ID=26248734

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7827590A Expired GB2000307B (en) 1977-03-22 1978-06-22 Shutter mechanism

Country Status (1)

Country Link
GB (1) GB2000307B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128347A (en) * 1982-10-02 1984-04-26 Eastman Kodak Co Self-cocking shutter for a photographic camera with a flash firing means
US4497553A (en) * 1983-04-27 1985-02-05 Eastman Kodak Company Shutter mechanism

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB872639A (en) * 1957-02-13 1961-07-12 Gen Electric A photographic flash-lamp device
GB1204697A (en) * 1966-12-08 1970-09-09 Sylvania Electric Prod Photoflash lamp
GB1334741A (en) * 1970-03-30 1973-10-24 Eastman Kodak Co Photographic camera
GB1346254A (en) * 1970-06-29 1974-02-06 Polaroid Corp Phtographic cameras
GB1353934A (en) * 1970-07-13 1974-05-22 Imp Camera Corp Camera flash bulb operating means
GB1355818A (en) * 1970-11-25 1974-06-05 Imp Camera Corp Camera flash lamp actuating structure
GB1441891A (en) * 1973-07-24 1976-07-07 Fuji Photo Film Co Ltd Flashcube mount

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3958258A (en) * 1975-04-10 1976-05-18 Eastman Kodak Company Flash shorting mechanism
US4183648A (en) * 1978-03-29 1980-01-15 Eastman Kodak Company Synchronizing mechanism for flash firing and shutter actuation

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB872639A (en) * 1957-02-13 1961-07-12 Gen Electric A photographic flash-lamp device
GB1204697A (en) * 1966-12-08 1970-09-09 Sylvania Electric Prod Photoflash lamp
GB1334741A (en) * 1970-03-30 1973-10-24 Eastman Kodak Co Photographic camera
GB1346254A (en) * 1970-06-29 1974-02-06 Polaroid Corp Phtographic cameras
GB1353934A (en) * 1970-07-13 1974-05-22 Imp Camera Corp Camera flash bulb operating means
GB1355818A (en) * 1970-11-25 1974-06-05 Imp Camera Corp Camera flash lamp actuating structure
GB1441891A (en) * 1973-07-24 1976-07-07 Fuji Photo Film Co Ltd Flashcube mount

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128347A (en) * 1982-10-02 1984-04-26 Eastman Kodak Co Self-cocking shutter for a photographic camera with a flash firing means
US4497553A (en) * 1983-04-27 1985-02-05 Eastman Kodak Company Shutter mechanism

Also Published As

Publication number Publication date
GB2000307B (en) 1982-01-06

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee