Abstract A collapsible single lens reflex camera capable of use with a photographic film of large size comprises a rigid base housing section in which an objective lens and a view finder are fixedly mounted in radially and longitudinally offset positions with respect to each other, and a collapsible housing section positioned beneath said view finder and behind said objective lens and comprising a first housing member carrying a film mount and having an edge pivotally mounted on said base housing, a second housing member carrying a reflecting mirror and having an edge pivotally mounted on the opposite edge of said first housing member to said pivoted edge, and a bellows of which the respective ends are connected to said first and second housing members, said first and second housing member being arranged with respect to the optical axis of said objective lens so that the image-forming light rays after reflected from said mirror are focussed on the film plane.
Inventors
👤 Kanehiro Sorimachi
👤 Hiroshi Aizawa
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-27 13:04
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/02; G03B19/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
A collapsible single lens reflex camera movable from a photographing position to a collapsed position comprising: a base housing containing a photographic lens, a finder optical system and a light-splitting element positioned in the path of light rays passing through said photographic lens to direct a portion thereof to said finder optical system; a first movable housing member carrying a film mount and having a first edge pivotally mounted on said base housing and a second edge opposite and parallel to said first edge; a second movable housing member carrying a reflecting mirror and having a third edge pivotally mounted on the second edge, of said first pivotable housing member; a bellows of which the respective open ends are connected to said first and second housing members to form an enclosed collapsible opaque chamber; and positioning means interconnecting said first and second movable housing members and pivotally mounted on said base housing to hold and accurately locate said movable housing members in angular position with respect to each other and to the optical axis of said photographic lens so that the image-forming light rays after reflected from said mirror are focussed on the plane of a photographic film mounted on said film mount.
Claim 2
Dependent Claim
203 words
A collapsible single lens reflex camera movable from a photographing position to a collapsed position comprising: a base housing containing a photographic lens, a finder optical system and a light-splitting element positioned in the path of light rays passing through said photographic lens to direct a portion thereof to said finder optical system; a first movable housing member carrying a film mount and having a first edge pivotally mounted on said base housing and a second edge opposite and parallel to said first edge; a second movable housing member carrying a reflecting mirror and having a third edge pivotally mounted on the second edge, of said first pivotable housing member; a bellows of which the respective open ends are connected to said first and second housing members to form an enclosed collapsible opaque chamber; and positioning means interconnecting said first and second movable housing members and pivotally mounted on said base housing to hold and accurately locate said movable housing members in angular position with respect to each other and to the optical axis of said photographic lens so that the image-forming light rays after reflected from said mirror are focussed on the plane of a photographic film mounted on said film mount.