Apparatus and method for removably mounting filters to a photographic lens
OwnerDavid Neimaninventor
Life of this patent
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Abstract
A coupling system and method for removably mounting filters to a photographic camera lens. The coupling system includes a lens coupling element and filter coupling element. The lens coupling element has a magnetically attractive projecting ring that is telescopically received by and magnetically coupled within the annular body of the filter coupling element. The forward end of the annular body operably supporting a filter material.
Claims17
A coupling system for removably mounting filters to a photographic lens, comprising:
- a lens coupling element having a front face disposed forwardly of a lens within a camera lens barrel, said lens coupling element further having a projection that is attractive to magnets but which itself is not a magnet, extending forwardly of said front face and having an outside diameter less than an outside diameter of said camera lens barrel;
- a filter coupling element having an annular body with a rearward end and a forward end, said rearward end sized to telescopically receive said projection and having a magnet recessed a distance within said annular body to magnetically couple with said telescopically received projection, said forward end of said annular body operably supporting a filter material.
For a camera having a lens barrel with a forward threaded recess for threadably receiving lens filters, a removable filter coupling system, comprising:
- a lens coupling element having a rearwardly projecting flange with external threads sized to be threadably received within the threaded recess of the lens barrel, said lens coupling element further having a projection that is attractive to magnets but which itself is not a magnet, that extends forwardly and has an outside diameter less than an outside diameter of the lens barrel;
- a filter coupling element having an annular body with a rearward end and a forward end, said rearward end sized to telescopically receive said projection and having a magnet recessed a distance within said annular body to magnetically couple with said telescopically received projection, said forward end of said annular body operably supporting a filter material.
A method of preparing a camera a lens barrel with a forward threaded recess for threadably receiving lens filters to interchangeably magnetically receive a plurality of different lens filters, said method comprising:
- providing a lens coupling element having a rearwardly projecting flange with external threads, said lens coupling element further having a projection that is attractive to magnets but which itself is not a magnet, that extends forwardly and has an outside diameter less than an outside diameter of the lens barrel;
- threading said rearwardly projecting flange of said lens coupling element into the threaded recess of the lens barrel;
- providing a first filter coupling element having a first annular body with a rearward end and a forward end, said rearward end sized to telescopically receive said projection of said lens coupling element and having a magnet recessed a distance within said annular body, said forward end of said first annular body operably supporting a first filter material;
- magnetically coupling said first filter coupling element onto said lens coupling element with said projection of said lens coupling element telescopically received within said rearward end of said annular body of said first filter coupling element.
Dependencies are inferred from the claim text.