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US 11,079,660 B2Granted
Optical filter holder
OwnerMario A Cugini, Joshua Aaron Swett +1inventors
InventorsMario A Cugini, Joshua Aaron Swett, Thomas J Horner
Life of this patent
Estimating the term…
Abstract
Self-adjusting filter holder assembly (10) consists of lens adapter (20) and filter holder (60). Lens adapter (20) has a variably-sized central opening (45) that accommodates lenses with a range of diameters. Filter holder (60) holds a single planar filter and is mounted onto lens adapter (20) with a detachable, rotatable fitting.
Claims7
A self-adjusting filter holder assembly for a camera lens having a front end having a diameter within a pre-determined range of diameters, said assembly for rotatably securing an optical filter to the front end, comprising:
- a lens adapter for mounting upon the front end of camera lens;
- including:
- a body;
- including a left side-rail including:
- a top end;
- a bottom end;
- a middle portion therebetween;
- an inner face;
- and
- left cooperative slide means;
- a right side-rail including:
- a top end;
- a bottom end;
- a middle portion therebetween;
- an inner face;
- and
- right cooperative slide means;
- a top rail connecting said top ends of said left side rail and said right side rail;
- a fixed jaw member including:
- a left end;
- a right end;
- and
- an arcuate jaw having:
- a center-facing concave face;
- said fixed jaw member connecting said left side rail and said right side rail;
- and
- a sliding jaw member including:
- a left end;
- a right end;
- and
- an arcuate jaw having:
- a center-facing concave face;
- said sliding arcuate jaw member connecting said left and right cooperative slide means and disposed between said left and right side rails;
- said fixed and sliding arcuate jaws disposed in opposition such that the concave faces of said fixed and sliding arcuate jaws face each other and define a central opening for receiving the front end of the camera lens;
- and wherein:
- said sliding arcuate jaw slides up or down said cooperative slide means between a closed-down position wherein the concave faces of said fixed and sliding arcuate jaws are at their minimum displacement and an opened position wherein the concave faces of said fixed and sliding arcuate jaws are at their maximum displacement;
- and
- wherein:
- said left and right cooperative slide means further include biasing means to move and retain said sliding arcuate jaw in the closed-down position unless upward force is applied to overcome the resistance of said bias means;
- and wherein the opposed concave faces of said fixed and sliding arcuate jaws are adapted to resiliently grip the front end of the camera lens;
- a front;
- and
- a back;
- and
- filter holder mounting means for mounting a filter holder;
- and
- a filter holder rotatably mounted on said lens adapter filter holding mounting means such that the filter held is disposed to completely cover the camera lens field of view and may be freely rotated.
44 more elements
A self-adjusting filter holder assembly for a camera lens having a front end having a diameter within a pre-determined range of diameters;
- said assembly for rotatably securing an optical filter to the front end comprising:
- a lens adapter body including:
- a front face;
- including:
- a first type filter holder mount for mounting a filter holder;
- and
- a filter holder detachably, rotatably mounted on said first type filter holding mount of said lens adapter comprising:
- a frame for receiving an optical planar filter and holding the filter in front of the camera lens such that the plane of the filter is substantially perpendicular to the direction of view of the camera lens and freely rotatable relative to the camera lens, including:
- a central aperture for exposing the portion of the optical filter disposed in front of the camera lens;
- a front shell having an outer face and an inner face;
- and
- a rear shell having an outer face and an inner face;
- said front and said rear shells attached inner face to inner face by mechanical fasteners;
- and further including:
- cooperative biased slide means for allowing said filter holder assembly to adjust automatically to securely attach to a camera lens front end of any diameter with the pre-determined range.
12 more elements
A self-adjusting filter holder assembly for a camera lens having a front end having a diameter within a pre-determined range of diameters;
- said assembly for rotatably securing an optical filter to the front end comprising:
- a lens adapter body including:
- a front face;
- including:
- a first type filter holder mount for mounting a filter holder;
- and
- a filter holder detachably, rotatably mounted on said first type filter holding mount of said lens adapter comprising:
- a frame for receiving an optical planar filter and holding the filter in front of the camera lens such that the plane of the filter is substantially perpendicular to the direction of view of the camera lens including:
- a central aperture for exposing the portion of the optical filter disposed in front of the camera lens;
- a front shell having an outer face and an inner face;
- a rear shell having an outer face and an inner face;
- said front and said rear shells connected inner face to inner face by mechanical fasteners;
- an internal slot that communicates to the exterior of said filter holder frame, for receiving the optical filter;
- and
- a pair of rollers for guiding and retaining the filter, said rollers disposed adjacent to and on opposite sides of said central aperture and defining a filter pathway between said pair of rollers.
12 more elements
A self-adjusting filter holder assembly for a camera lens having a front end having a diameter within a pre-determined range of diameters;
- said assembly for rotatably securing an optical filter to the front end comprising:
- a lens adapter for mounting upon the camera lens;
- including:
- a body including:
- a front face;
- including:
- a first type cooperative filter holder cooperative mount comprising:
- an outwardly projecting ring with a diameter greater than the maximum distance between said fixed arcuate jaw and said sliding arcuate jaw;
- a filter holder having a central aperture and including:
- a front shell having an outer face and an inner face;
- and
- a rear shell having an outer face and an inner face;
- including
- second type cooperative mount for detachably, rotatably mounting said filter holder to said first type filter hold cooperative mount;
- comprising:
- a circular groove with a diameter equal to that of said outwardly projecting ring and adapted to receive said outwardly projecting ring for detachably, rotatably said filter holder on said outwardly projecting ring;
- and
- wherein:
- said first type cooperative filter holder mount further includes:
- a pair of spring-biased clips for receiving said outwardly projecting ring with a rotatable snap fit such that said outwardly projecting ring is unlikely to be detached accidentally;
- said lens adapter further including cooperative biased slide means for allowing said filter holder assembly to adjust automatically to securely attach to a camera lens front end of any diameter within the pre-determined range, such that the filter is disposed in the camera lens point of view and freely rotatable relative to the camera lens.
18 more elements
Dependencies are inferred from the claim text.