GB1517490A – Photographic cameras
– Google Patents
GB1517490A – Photographic cameras
– Google Patents
Photographic cameras
Info
Publication number
GB1517490A
GB1517490A
GB44194/76A
GB4419476A
GB1517490A
GB 1517490 A
GB1517490 A
GB 1517490A
GB 44194/76 A
GB44194/76 A
GB 44194/76A
GB 4419476 A
GB4419476 A
GB 4419476A
GB 1517490 A
GB1517490 A
GB 1517490A
Authority
GB
United Kingdom
Prior art keywords
slide
cam
lug
optical axis
spring
Prior art date
1976-07-17
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
Application number
GB44194/76A
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.)
Balda Werke Photographische Gerate und Kunststof GmbH and Co KG
Original Assignee
Balda Werke Photographische Gerate und Kunststof GmbH and Co KG
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.)
1976-07-17
Filing date
1976-10-25
Publication date
1978-07-12
1976-07-17
Priority claimed from DE19762632370
external-priority
patent/DE2632370C2/en
1976-08-16
Priority claimed from DE19762636795
external-priority
patent/DE2636795A1/en
1976-10-25
Application filed by Balda Werke Photographische Gerate und Kunststof GmbH and Co KG
filed
Critical
Balda Werke Photographische Gerate und Kunststof GmbH and Co KG
1978-07-12
Publication of GB1517490A
publication
Critical
patent/GB1517490A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
230000003287
optical effect
Effects
0.000
abstract
3
238000006073
displacement reaction
Methods
0.000
abstract
1
229920000642
polymer
Polymers
0.000
abstract
1
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
G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
G03B3/02—Focusing arrangements of general interest for cameras, projectors or printers moving lens along baseboard
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
G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
G03B13/18—Focusing aids
G03B13/20—Rangefinders coupled with focusing arrangements, e.g. adjustment of rangefinder automatically focusing camera
Abstract
1517490 Focusing mechanism BALDA-WERKE PHOTOGRAPHISCHE GERATE UND KUNSTSTOFF GmbH & CO KG 25 Oct 1976 [17 July 1976 16 Aug 1976] 44194/76 Heading G2A A lens focusing mechanism comprises a slide movable transverse to the optical axis, the slide having two inclined cam surfaces camming in opposite directions, each with a spring-urged cam follower, the arrangement being such that the components of the pressure on the cam surfaces acting along the displacement direction balance each other out. As shown, the slide 3 can be moved in its longitudinal direction by means of an operating member 13 which engages the slide. The lens housing 2 is urged in the direction of the optical axis by a spring 11 acting on a lug 4 on the housing. The lug 4 also engages an inclined cam surface 8 on the slide, urging it against a fixed bearing point 5. At the other end of the slide, on the other side, and being inclined in the same direction as cam surface 8, is another cam surface 9. A lever 15 on a pivot 12, and biased clockwise by a spring 10, has a lug 7 which bears against cam 9, so urging the slide against another fixed bearing point 6. When, by means of member 13, the slide is moved in either direction 22, so moving the lens housing 2 along the optical axis, components of the force exerted from the springs 10 and 11 along the length of the slide act in opposite directions, so cancelling each other out. Thus the slide 3 is in equilibrium in any position. The lever 15 may also be used to control another camera function, e.g. a rangefinder.
GB44194/76A
1976-07-17
1976-10-25
Photographic cameras
Expired
GB1517490A
(en)
Applications Claiming Priority (2)
Application Number
Priority Date
Filing Date
Title
DE19762632370
DE2632370C2
(en)
1976-07-17
1976-07-17
Actuating device for lens housing of a camera
DE19762636795
DE2636795A1
(en)
1976-08-16
1976-08-16
Camera with adjustable objective – uses pair of inclined surfaces engaging members such that transverse motion of surfaces causes axial movement of lens components
Publications (1)
Publication Number
Publication Date
GB1517490A
true
GB1517490A
(en)
1978-07-12
Family
ID=25770716
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB44194/76A
Expired
GB1517490A
(en)
1976-07-17
1976-10-25
Photographic cameras
Country Status (4)
Country
Link
US
(1)
US4070686A
(en)
FR
(1)
FR2358677A1
(en)
GB
(1)
GB1517490A
(en)
IT
(1)
IT1073039B
(en)
Families Citing this family (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4163613A
(en)
*
1978-01-27
1979-08-07
Eastman Kodak Company
Camera focus or exposure adjustment mechanism
JPS56128930A
(en)
*
1980-03-14
1981-10-08
West Electric Co Ltd
Camera with telephotographic device
Family Cites Families (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE1208177B
(en)
*
1960-09-23
1965-12-30
Bauer Eugen Gmbh
Recording camera for photo or film recordings with two movable masks to adapt to lenses of different focal lengths
DE2136183C3
(en)
*
1971-07-20
1975-05-07
Balda Werke Photographische Geraete Und Kunststoff Gmbh & Co. Kg, 4980 Buende
Camera with retractable lens mount
US3798670A
(en)
*
1971-10-20
1974-03-19
Minolta Camera Kk
Camera focusing mechanism
US3913113A
(en)
*
1972-11-22
1975-10-14
Minolta Camera Kk
Compact camera with objective lens settable to pre-selected focus
JPS5343147Y2
(en)
*
1972-12-27
1978-10-17
1976
1976-10-14
IT
IT28331/76A
patent/IT1073039B/en
active
1976-10-25
GB
GB44194/76A
patent/GB1517490A/en
not_active
Expired
1976-12-20
US
US05/752,340
patent/US4070686A/en
not_active
Expired – Lifetime
1977
1977-01-31
FR
FR7702611A
patent/FR2358677A1/en
active
Granted
Also Published As
Publication number
Publication date
FR2358677A1
(en)
1978-02-10
FR2358677B1
(en)
1980-03-07
US4070686A
(en)
1978-01-24
IT1073039B
(en)
1985-04-13
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Legal Events
Date
Code
Title
Description
1978-11-15
PS
Patent sealed [section 19, patents act 1949]
1982-06-03
PCNP
Patent ceased through non-payment of renewal fee
